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CONTRACT 6574 - PERM Spec Other CLOSEDAgreement No. 6574 I CONTRACT DOCUMENTS PLANS & SPECIFICATIONS FOR EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 PUBLIC WORKS DEPARTMENT ENGINEERING DIVISION 350 MAIN STREET EL SEGUNDO, CA 90245 310-524-2300 MANDATORY PRE -BID MEETING OCTOBER 11, 2022 AT 10 AM IN CITY HALL COUNCIL CHAMBERS 350 MAIN STREET EL SEGUNDO, CA 90245 BIDS DUE NOVEMBER 2, 2022 AT 11:00 AM Agreement No. 6574 BIDS WILL BE RECEIVED UP TO THE HOUR OF 11:00 AM WEDNESDAY, NOVEMBER 2, 2022 IN THE OFFICE OF THE CITY CLERK CITY HALL 350 MAIN STREET EL SEGUNDO, CALIFORNIA 90245 AT WHICH TIME THEY WILL BE PUBLICLY OPENED Agreement No. 6574 SPECIAL INSTRUCTIONS TO CONTRACTORS Contractors are required to review section 7-3 of the STANDARD SPECIFICATIONS, pages II-B-24 thru II-B-27 "LIABILITY INSURANCE". ONLY CONTRACTORS ABLE TO OBTAIN AND FURNISH THE REQUIRED COVERAGE AND ENDORSEMENT "ISO" FORMS SHOULD CONSIDER SUBMITTING A BID PACKAGE. The Contractor will be required to apply and obtain an Encroachment Permit from the City Public Works Department as well as any applicable Building/Safety Permit from the City Planning and Building Safety Department. The permits will be issued on a "no -fee" basis. The Contractor shall be responsible for calling the Building Safety Division for inspections. All noted deficiencies shall be corrected by the contractor. The project will not be accepted as complete until the contractor obtains a final sign -off from the Department of Planning and Building Safety. Agreement No. 6574 TABLE OF CONTENTS SECTION I — LEGAL A. NOTICE INVITING SEALED BIDS B. BIDDING INSTRUCTIONS 1. DEFINITION 2. BIDDER'S REPRESENTATIONS 3. BIDDING DOCUMENTS 4. INTERPRETATION OR CORRECTION OF BIDDING DOCUMENTS 5. PRODUCT SUBSTITUTIONS 6. SUBCONTRACTORS 7. ADDENDA 8. PRE -BID CONFERENCE 9. FORM AND STYLE OF BIDS 10. BID SECURITY 11. MODIFICATION OR WITHDRAWAL OF BID 12. OPENING OF BIDS 13. REJECTION OF BIDS 14. AWARD C. PROPOSAL 1. PROPOSAL, FIRST PAGE 2. BID SCHEDULES a. BASE BID b. ALTERNATIVE BID 3. BIDDER'S INFORMATION 4. BIDDER AND NOTARIAL ACKNOWLEDGEMENT 5. PROPOSAL GUARANTEE BID BOND 6. CONTRACTOR'S LICENSE DECLARATION 7. NON -COLLUSION DECLARATION 8. WORKER'S COMPENSATION CERTIFICATION 9. DESIGNATION OF SUBCONTRACTORS 10. REFERENCES 11. BIDDER'S STATEMENT OF PAST DISQUALIFICATIONS 11. INSURANCE REQUIREMENTS D. CITY OF EL SEGUNDO PUBLIC WORKS CONTRACT E. FAITHFUL PERFORMANCE BOND PAGE I-A-1 TO A-3 I-B-1 TO B-8 I-B-1 I-B-1 I-B-2 I-B-2 I-B-3 I-B-3 I-B-3 I-B-3 I-B-4 I-B-5 I-B-6 I-B-6 I-B-6 I-B-7 I-C-1 TO C-17 I-C-1 I-C-3 I-C-4 I-C-6 I-C-7 I-C-8 I-C-9 I-C-10 I-C- I I I-C-12 I-C-15 I-C-16 I-D-1 TO D-5 I-E-1 TO E-3 F. MATERIAL AND LABOR BOND I-F-1 TO F-3 SECTION II - GENERAL REQUIREMENTS A. GENERAL SPECIFICATIONS I. REGISTRATION OF CONTRACTORS 2. INSURANCE AND CITY BUSINESS LICENSE 3. EMERGENCY INFORMATION 4. FURNISHING OF WATER 5. CALIFORNIA - OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION 6. SOUND CONTROL 7. AIR POLLUTION CONTROL 8. WORKER UNIFORMS B. GENERAL PROVISIONS 0-0 STANDARD SPECIFICATIONS 0-1 GENERAL 0-2 NUMBERING OF SECTIONS 1-2 DEFINITIONS 1-2.1 ADDITIONAL DEFINITIONS 1-3 ABBREVIATIONS 1-6 BIDDING AND SUBMISSION OF THE BID 1-6.1 GENERAL 1-6.2 ADDITIONAL RESPONSIBILITY 1-7.2 CONTRACT BONDS Agreement No. 6574 PAGE II-A-1 TO A-2 II-A-1 I I-A-1 II-A-1 II-A-1 II-A-1 II-A-2 II-A-2 II-A-2 II-B-1 TO B-35 2-0 SCOPE OF WORK II-B-4 2-1.1 ACCESS TO PROJECT SITE II-B-4 2-1.2 OWNERSHIP AND USE OF CONTRACT II-B-4 DOCUMENTS 2-2 PERMITS II-B-4 2-3 RIGHT-OF-WAY II-B-5 2-3.1 ADDITIONAL WORK AREAS AND FACILITIES II-B-5 2-9 CHANGED CONDITIONS II-B-5 2-10 DISPUTED WORK II-B-6 3-0 CONTROL OF THE WORK II-B-6 3-7 CONTRACT DOCUMENTS II-B-6 3-7.1 GENERAL II-B-6 3-7.2 PRECEDENCE OF CONTRACT DOCUMENTS II-B-7 3-7.3 ACCURACY OF PLANS AND SPECIFICATIONS II-B-7 3-10 SURVEYING II-B-8 3-10.3 SURVEY SERVICE II-B-8 3-10.3.1 CONSTRUCTION SURVEYING II-B-8 3-10.3.2 MEASUREMENT AND PAYMENT II-B-8 Agreement No. 6574 SECTION II — GENERAL REQUIREMENTS (Continued) 3-12.1 CLEANUP AND DUST CONTROL 3-12.1.1 GENERAL 3-12.1.2 WATERING 3-12.6 WATER POLLUTION CONTROL 3-12.7 PROTECTION AND RESTORATION OF EXISTING IMPROVEMENTS 3-12.8 PUBLIC CONVENIENCE AND SAFETY 3-12.8.1 TRAFFIC AND ACCESS 3-12.8.2 STREET CLOSURES, DETOURS, AND BARRICADES 3-12.8.3 PROTECTION OF THE PUBLIC 3-13 COMPLETION AND ACCEPTANCE 3-13.1 GENERAL GUARANTY 4-0 CONTROL OF MATERIALS 4-3 INSPECTION REQUIREMENTS 4-3.1 GENERAL 4-6 TRADE NAMES 4-6.1 TRADE, NAMES OR EQUALS 5-0 LEGAL RELATIONS AND RESPONSIBILITIES 5-3 LABOR 5-3.2 PREVAILING WAGES 5-3.3 RECORD OF WAGES PAID: INSPECTION 5-4 LIABILITY INSURANCE 5-4.1 GENERAL 5-4.2 INDEMNIFICATION AND DEFENSE 5-7.4.1 HAZARDOUS MATERIAL 6-0 PROSECUTION AND PROGRESS OF THE WORK 6-1 CONSTRUCTION SCHEDULE AND COMMENCEMENT OF WORK 6-1.1 CONTRACT SCHEDULE 6-1.2 CONTENT OF CONTRACT SCHEDULE 6-1.3 EFFECT OF CONTRACT SCHEDULE 6-1.4 COMMENCEMENT OF CONTRACT TIME 6-3.3 WORK DAYS AND WORKING HOURS 6-3.4 NIGHT WORK 6-3.5 WEEKEND AND HOLIDAY WORK 6-4 DELAYS AND EXTENSIONS OF TIME 6-4.1 GENERAL 6-4.2 EXTENSIONS OF TIME 6-4.3 PAYMENT FOR DELAYS TO CONTRACTOR 6-4.4 WRITTEN NOTICE AND REPORT in PAGE II-B-8 II-B-9 II-B-9 II-B-9 II-B-10 II-B-14 II-B-14 II-B-14 II-B-15 II-B-15 II-B-16 II-B-18 II-B-19 II-B-20 II-B-20 II-B-20 II-B-20 II-B-21 II-B-22 I1-B-22 II-B-22 II-13-23 II-B-23 II-B-23 II-B-23 II-B-23 II-B-24 Agreement No. 6574 SECTION II — GENERAL REQUIREMENTS (Continued) PAGE 6-7 DEFAULT BY CONTRACTOR I1-B-24 6-7.1 GENERAL II-B-24 6-7.2 TERMINATION OF CONTRACTOR'S II-13-24 CONTROL OVER THE WORK 6-7.3 SURETY'S ASSUMPTION OF CONTROL 11-B-25 6-9 LIQUIDATED DAMAGES II-B-25 6-9.1 FAILURE TO COMPLETE THE WORK ON TIME 11-B-25 6-11 DISPUTES AND CLAIMS; PROCEDURE II-B-26 6-11.1 GENERAL II-B-26 6-11.2 FORM I1-B-26 6-11.3 CLAIMS SUBMITTED TO ENGINEER II-B-28 6-11.4 CLAIMS IS PREREQUISITE TO OTHER REMEDY II-B-28 6-11.5 DECISION ON CLAIMS 11-B-28 6-11.6 APPEAL OF ENGINEER'S DECISION II-B-29 6-11.7 MEDIATION 11-B-29 6-11.8 ARBITRATION I1-B-29 6-11.9 WHEN ARBITRATION DECISION BECOMES II-B-30 BINDING 6-11.10 APPEAL TO SUPERIOR COURT; WAIVER 11-13-30 OF JURY TRIAL 6-11.11 AB 626 CLAIMS; PROCESS 11-B-30 7-0 MEASUREMENT AND PAYMENT 11-13-31 7-2 LUMP SUM WORK II-B-31 7-3.2 PARTIAL AND FINAL PAYMENTS 11-B-31 7-3.3 DELIVERED MATERIALS II-13-32 7-4.2.3 BASIS FOR ESTABLISHING COSTS II-B-33 7-4.3 MARK UP 11-13-33 7-4.4 DAILY REPORTS BY CONTRACTOR I1-13-33 100-1 TERMINATION OF AGENCY LIABILITY II-B-34 402-0 UTILITIES 11-13-34 402-2 PROTECTION 11-13-34 402-2.1 INCORRECT LOCATION OF UTILITIES 11-13-34 402-4 RELOCATION I1-B-34 402-4.1 RESPONSIBILITY OF UTILITY REMOVAL I1-B-34 OR RELOCATION 402-5 DELAYS 11-B-34 402-5.1 CALCULATING IDLE TIME 11-B-35 I MA Agreement No. 6574 SECTION III - SPECIAL PROVISIONS SECTION IV - MEASUREMENT AND PAYMENT SECTION V - TECHNICAL SPECIFICATIONS ATTACHMENTS PAGE III-A-1 TO III-A-13 PAGE IV-A-1 TO A-14 PAGE V-A-1 TO V-A-54 APPENDIX A - MISCELLANEOUS CONTACT INFORMATION APPENDIX B - SAMPLE PROJECT SIGN INFORMATION APPENDIX C - CONSTRUCTION AND DEBRIS RECYCLING FORMS APPENDIX D - STORMWATER POLLLUTION PREVENTION PLAN (SWPPP) APPENDIX E - EL SEGUNDO BOULEVARD IMPROVEMENT PLANS APPENDIX F - ALTERNATIVE BID CURB RAMPS EXHIBIT Agreement No. 6574 NOTICE INVITING SEALED BIDS FOR THE EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT IN THE CITY OF EL SEGUNDO PROJECT NO.: PW 23-02 The City of El Segundo is accepting sealed bids in the City Clerk's office, 350 Main Street, El Segundo, California 90245, until 11:00 A.M. on: WEDNESDAY, NOVEMBER 2, 2022 at which time they will be publicly opened. Bids will not be accepted after that time. As described in the Bidding Documents, the bids are for a public works project ("Project") which consists of furnishing all supervision, materials, labor tools and incidentals and related work, as required in the specifications, plans and contract documents for the following project: "El Segundo Boulevard Improvement Project", on file with the City's Public Works Department. Work on the Project must be performed in strict conformity with Specifications No. PW 23- 02 as adopted by the El Segundo City Council on September 20, 2022 which is filed with the Public Works Department. Copies of the Plans, Specifications, Contract Documents and Engineer's estimate are available from the Engineering Division of the Public Works Department, City of El Segundo, 350 Main Street, El Segundo, California, 90245. Plans And Specifications are alternately available electronically via l tt[is://wNvw.elseoo.or / oveiiiinent/de aia tnie�its/ ubl -wor ss/re crest- ublic-works-bid A pre -bid meeting is scheduled for Tuesday, October 11, 2022 at 10 am, at the City Hall Council Chambers, 350 Main Street, El Segundo, CA 90245. Bidders' attendance at this meeting is mandatory. Questions regarding the bid shall be submitted by 5pm on October 21, 2022 to htt s:/lwww.else undo.er / ovrrrrrrcrld artnients/rerblic-vorksfre oast- ubli- works-bid The terms and conditions for bidding on the Project are described in the attached Bidding Instructions. This project requires payment of State prevailing rates of wages for Los Angeles County. The contractor must post copies of the prevailing schedule at each job site. Copies of these rates of wages are available from the State of California Department of Industrial Relations Prevailing Wage Unit, Telephone No. (415) 703-4774. The website for this agency is currently located at http://www.dir.ca.gov. I-A-1 Agreement No. 6574 Note that the Project is subject to compliance monitoring and enforcement by California Department of Industrial Relations. Pursuant to California law, the City must find bids failing to comply with all applicable Labor Code requirements including, without limitation, Labor Code § § 1725.5 and 1771.4 to be nonresponsive. The contractor to whom the contract is awarded must assist in locating, qualifying, hiring and increasing the skills of minority group employees and applicants for employment, as set forth in Executive Order 11246 and 11375. Any contract entered into pursuant to this notice will incorporate the provisions of the State Labor Code. Compliance with the prevailing rates of wages and apprenticeship employment standards established by the State Director of Industrial Relations will be required. Affinnative action to ensure against discrimination in employment practices on the basis of race, color, national origin, ancestry, sex, or religion will also be required. The City of El Segundo hereby affirmatively ensures that minority business enterprises will be afforded full opportunity to submit bids in response to this notice and will not be discriminated against on the basis of race, color, national origin, ancestry, sex, or religion in any consideration leading to the award of contract. The Contractor's duty to pay State prevailing wages can be found under Labor Code Section 1770 et. Seq. and Labor Code Sections 1775 and 1777.7 outline the penalties for failure to pay prevailing wages and employ apprentices including forfeitures and debarment. Five percent (5%) will be deducted from each progress payment and retained by the City. The remainder less the amount of all previous payments will be paid to the Contractor. Pursuant to Public Contracts Code ("PCC") § 22300, the Contractor may substitute securities for retention monies held by the City or request that the City place such monies into an escrow account. The Contractor is notified, pursuant to PCC § 22300, any such election will be at the Contractor own expense and will include costs incurred by the City to accommodate the Contractor's request. In entering into a Public Works contract, or a subcontract, to supply goods, services, or materials pursuant to a public works contract, the Contractor, or Sub -Contractor, offers and agrees to assign to the awarding body all rights, title and interest in, and to, all causes of action it may have under Section 4 of the Clayton Act (15 U.S.C. Section 15) or under the Cartwright Act (Chapter 2 [commencing with Section 16700] of Part 2 of Division 7 of the Business and Professions Code), arising from purchases of goods, services, or materials pursuant to the public works contract or the subcontract. This assignment shall be made and become effective at the time the awarding body tenders final payment to the Contractor, without further acknowledgment by the parties. Bids must be prepared on the approved Proposal forms in conformance with the Instructions I-A-2 Agreement No. 6574 to Bidders and submitted to the City Clerk, 350 Main Street, City of El Segundo, in a sealed envelope plainly marked on the outside: "SEALED BIDS FOR PROJECT NO.: PW 23-02 EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT IN THE CITY OF EL SEGUNDO DO NOT OPEN WITH REGULAR MAIL" The bid must be accompanied by a bid bond, made payable to the City of El Segundo for an amount no less than ten percent (10%) of the amount bid for the base contract. No bid will be accepted from a Contractor who has not been licensed in accordance with the provisions of the State Business and Professions Code. For this project, those acceptable classes of license shall be "A". The successful Contractor and his Sub -Contractors will be required to possess the correct license for their project classifications, and valid City Business Licenses from the City of El Segundo. The City of El Segundo reserves the right to reject any or all bids, to waive any irregularity, and to take all bids under advisement for a period of ninety (90) calendar days. Any contract entered into pursuant to this notice shall become effective or enforceable against the City of El Segundo only when the formal written contract has been duly executed by the appropriate officer(s) of the City of El Segundo. DATED this day of 20 CITY OF EL SEGUNDO, CALIFORNIA Tracy Weaver, City Clerk I-A-3 Agreement No. 6574 BIDDING INSTRUCTIONS DEFINITIONS. Unless provided otherwise, the definitions in the Greenbook, Special Conditions, or other Contract Documents are applicable to all Bidding Documents. 1.1 "Addenda" means written or graphic instruments issued by the City before the Bid Deadline that modify or interpret the Bidding Documents by additions, deletions, clarifications, or corrections. 1.2 "Alternate" means a proposed change in the Work, as described in the Bidding Documents which, if accepted, may result in a change to either the Contract Sum or the Contract Time, or both. 1.3 "Bid Deadline" means the date and time designated in the Notice for Bids as the last date and time for receipt of Bids, as may be revised by Addenda. 1.4 "Bidder" means a person or firm that submits a Bid. 1.5 "Bidding Documents" means the construction documents prepared and issued for bidding purposes including all Addenda 1.6 "Lump Sum Base Bid" means the sum stated in the Bid for which Bidder offers to perform the Work described in the Bidding Documents, but not including unit price items or Alternates. 1.7 "Unit Price" means an amount stated in the Bid for which Bidder offers to perform the Unit Price Work for a fixed price per unit of measurement. 2. BIDDER'S REPRESENTATIONS. By making its Bid, Bidder represents that: 2.1 Bidder read, understood, and made the Bid pursuant to the requirements in the Bidding Documents. 2.2 Bidder visited the Project site and is familiar with the conditions under which the Work will be performed and the local conditions as related to the Contract Documents. 2.3 The Bid is based upon the materials, equipment, and systems required by the Bidding Documents. 2.4 Bidder and all Subcontractors, regardless of tier, have the appropriate current licenses issued by the State of California Contractor's State License Board for the Work to be performed. If Bidder is a joint venture, the Bidder will have a joint venture license appropriate for the performance of the work, and each member of the joint venture will likewise have the appropriate license. Business and Professions Code § § 7000-7191 establish licensing requirements for contractors. If a Bidder, that is a specialty contractor, submits a Bid involving 3 or more specialized building trades, the work of which is more than incidental and supplemental to the performance of the Work for which Bidder holds a specialty contractor license, Bidder must also hold either (1) a specialty contractor "C" license in each such trade, (2) a General Engineering contractor "A" license, or (3) a General Building contractor "B" license. This requirement is applicable whether or not Bidder lists a Subcontractor for each such trade. 2.5 If licensure or proper licensure is controverted, then proof of licensure pursuant to this section must be made by production of a verified certificate of licensure from I-B-1 Agreement No. 6574 the Contractors' State License Board which establishes that the individual or entity bringing the action was duly licensed in the proper classification of contractors at all times during the performance of any act or contract covered by the action. Nothing in this subdivision requires any person or entity controverting licensure or proper licensure to produce a verified certificate. When licensure or proper licensure is controverted, the burden of proof to establish licensure or proper licensure is on the licensee. 2.6 Bidder has the expertise and financial capacity to perform and complete all obligations under the Bidding Documents. 2.7 The person executing the Bid Form is duly authorized and empowered to execute the Bid Form on Bidder's behalf. 2.8 Bidder is aware of and, if awarded the Contract, will comply with Applicable Code Requirements in its performance of the Work. 2.9 The Bidder has paid the City's business license fee(s) 2.10 The Bidder, per SB 854 requirements for public projects, has registered with and paid their annual fee to the California State Department of Industrial Relations. Information about SB 854 and its requirements can be found at this link: http://www.dir.ca.gov/Public-Works/SB854.html BIDDING DOCUMENTS 3.1 Bidders may obtain complete sets of the Bidding Documents from the City's Public Works Department for the sum stated in the Notice for Bids. 3.2 Bidders will use a complete set of Bidding Documents in preparing Bids. 3.3 The City makes copies of the Bidding Documents available, on the above terms, for the sole purpose of obtaining Bids for the Work and does not confer a license or grant permission for any other use of the Bidding Documents. 4. INTERPRETATION OR CORRECTION OF BIDDING DOCUMENTS. 4.1 Before submitting its Bid, Bidder will carefully study and compare the various documents comprising the Bidding Documents and compare them with any other work being bid concurrently or presently under construction which relates to the Work for which the Bid is submitted; will examine the Project site, the conditions under which the Work is to be performed, and the local conditions; and will at once report to the City's Representative errors, inconsistencies, or ambiguities discovered. 4.2 Requests for clarification or interpretation of the Bidding Documents will be addressed to the City's Representative. 4.2.1 The release of the bid package begins a quiet period for potential Bidders participating in this project. The City of El Segundo realizes it is critical to provide Bidders with a vehicle to ask questions so that quality responses can be prepared. Questions must be submitted in writing to project managers via the City website: htt s://www,else iindo.or / overnnteiit/dr artiiients/ ublic- workslrecuest- �ublic-wot•ks-bid Responses to all questions will be provided in writing to all Bidders in I-B-2 Agreement No. 6574 accordance with the schedule below. We will not identify companies or individuals that pose questions. Potential bidders must not call City of El Segundo employees to discuss potential projects or ask questions regarding the bid. Questions Due by 5:00 pm, October 21, 2022 Questions Answered by 5:00 pm, October 26, 2022 4.3 Clarifications, interpretations, corrections, and changes to the Bidding Documents will be made by Addenda. Clarifications, interpretations, corrections, and changes to the Bidding Documents made in any other manner will not be binding and Bidders must not rely upon them. 5. PRODUCT SUBSTITUTIONS. No substitutions will be considered before award of Contract. Substitutions will only be considered after award of the Contract and as provided for in the Contract Documents. 6. SUBCONTRACTORS. 6.1 Each Bidder will list in the Bid Form all first -tier Subcontractors that will perform work, labor or render such services. The Bid Form contains spaces for the following information when listing Subcontractors: (1) Work Activity; (2) name of Subcontractor; (3) city of Subcontractor's business location. Failure to list any of these items on the Bid Form will result in the City treating the Bid as if no Subcontractor was listed for the Work and that Bidder represents to the City that it is fully qualified to perform that portion of the Work and will perform do so. 6.2 Subcontractors listed in the Bid Form will only be substituted after the Bid Deadline with the City's written consent in accordance with California law. 7. ADDENDA. 7.1 Addenda will be in writing and issued only by the City. Addenda will be mailed or delivered to all who are known by the City to have received a complete set of Bidding Documents and who have provided a street address for receipt of Addenda. 7.2 Copies of Addenda will be made available for inspection at the City's Public Works Department. 7.3 The City will issue Addenda so that they are received by prospective Bidders not later than three (3) business days before the Bid Deadline. Addenda that withdraw the request for Bids or postpone the Bid Deadline may be issued anytime before the Bid Deadline. 7.4 Each Bidder is responsible for ensuring that it has received all issued Addenda before issuing a Bid. 8. PRE -BID CONFERENCE. Bidder will attend a Pre -Bid Conference where the City will discuss the Bidding Documents, answer questions, accept comments, and conduct a Project site visit. The City requires all Pre -Bid Conference attendees to arrive for the meeting on time and to sign an attendance list which is used to determine if Bidders meet this I-13-3 Agreement No. 6574 requirement. Any Bidder not attending the Pre -Bid Conference in its entirety will be deemed to have not complied with the requirements of the Bidding Documents and its Bid will be rejected. 9. FORM AND STYLE OF BIDS 9.1 Bids will be submitted on the Bid Forin included with the Bidding Documents. Bids not submitted on the City's Bid Form will be rejected. 9.2 All blanks on the Bid Form will be filled in legibly in ink or by typewriter. 9.3 Bidder's failure to submit a price for any Alternate or unit price will result in the Bid being considered as nonresponsive. If Alternates are called for and no change in the Lump Sum Base Bid is required, enter "No Change." 9.4 Each Bidder must fill out the "Bidders Statement of Past Contract Disqualifica- tions" form stating any and all instances of contract disqualifications due to a violation of a law or safety regulation. The Bidder must explain the circumstances of each disqualification. The City may reject the bid based on such information. 9.5 Bidder will make no stipulations on the Bid Form nor qualify the Bid in any manner. 9.6 The Bids will be based upon full completion of all the Work as shown on the plans and specifications. It is expressly understood that the plans are drawn with as much accuracy as is possible in advance, but should errors, omissions or discrepancies exist in the plans which show conditions that vary from those encountered in construction, the Bidder (if awarded the Contract) specifically agrees to construct a completed work ready for the use and in the manner which is intended. In the event of increasing or decreasing of work, the total amount of work actually done or materials or equipment furnished must be paid for according to the unit or lump suns price established for such work under the contract, wherever such unit or lump sum price has been established. In the event no prices are named in the contract to cover such changes or alterations, the cost of such changes must be covered as extra work. 9.7 The Bid Form will be signed by a person or persons legally authorized to bind Bidder to a contract. Bidder's Representative will sign and date the Declaration included in the Bid Form. Failure to sign and date the declaration will cause the Bid to be rejected. 9.8 Bids must be submitted in writing on the Proposal forms provided by the City of El Segundo. One (1) set of these Proposal forms is inserted loose herein for use by the bidders. Bidders are required to submit one (1) original set of the proposal forms. All information requested therein must be clearly and legibly set forth in the manner and form indicated. 9.9 Bidders must satisfy themselves by personal examination of the work site, Plans, Specifications, and other contract documents, and by any other means as they may believe necessary, as to the actual physical conditions, requirements and difficulties under which the work must be performed. No bidder shall at any time after submissions of a proposal make any claim or assertion that there was any misunderstanding or lack of information regarding the nature or amount of work necessary for the satisfactory completion of the job. Any errors, omissions, or discrepancies found in the Plans, Specifications, or other contract documents shall I-B-4 Agreement No. 6574 be called to the attention of the City of El Segundo and clarified prior to the submission of proposals. 10. BID SECURITY 10.1 Each Bid will be accompanied by Bid Security, in the amount of 10% of the Lump Sum Base Bid as security for Bidder's obligation to enter into a Contract with the City on the terms stated in the Bid Form and to furnish all items required by the Bidding Documents. Bid Security will be a Bid Bond on the form provided by the City or a certified check made payable to "City of El Segundo." When a Bond is used for Bid Security, failure to use the City's Bid Bond fore will result in the rejection of the Bid. 10.2 If the apparent lowest responsible Bidder fails to sign the Agreement and furnish all items required by the Bidding Documents within the time limits specified in these Instructions to Bidders, the City will disqualify such Bidder and select the next apparent lowest responsible Bidder until all bids have been exhausted or the City may reject all bids. In such an event, the disqualified Bidder will be liable for and forfeit to the City the amount of the difference, not to exceed the amount of the Bid Security, between the amount of the disqualified Bid and the larger amount for which the City procures the Work. 10.3 If a Bid Bond is submitted and an attorney -in -fact executes the Bid Bond on behalf of the surety, a notarized and current copy of the power of attorney will be affixed to the Bid Bond. The surety issuing the Bid Bond will be listed in the latest published State of California, Department of Insurance list of, "Insurers Admitted to Transact Surety Insurance in This State." 10.4 The City will retain Bid Security until the occurrence of one of the following: 10.4.1 All items required by the Bidding Documents have been furnished and the Agreement has been signed by the successful Bidder and the City. 10.4.2 The specified time has elapsed during which Bids may be withdrawn. 10.4.3 All Bids have been rejected. 10.5 The Bid Form, Bid Security, and all other documents required to be submitted with the Bid must be enclosed in a sealed opaque envelope. The envelope must be addressed to the City Clerk. The envelope must be identified with the Bidder's name and address, and identify the Project for which the Bid is submitted:, as follows: "SEALED BIDS FOR PW 23-02: EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT. DO NOT OPEN WITH REGULAR MAIL." Proposals may be mailed or delivered by messenger. 10.6 Bids will be deposited at the designated location on or before the Bid Deadline. A Bid received after the Bid Deadline will be returned to Bidder unopened. 10.7 Bidder will assume full responsibility for timely delivery at the location designated for receipt of Bids. 10.8 Oral, telephonic, facsimile, or telegraphic Bids are invalid and will not be accepted. 10.9 All proposals must be submitted, filed, made, and executed in accordance with State and Federal laws related to bids for contracts of this nature whether the same is expressly referred to herein or not. Any bidder submitting a proposal shall by such action thereby agree to each and all of the terms, conditions, provisions, and requirements set forth, contemplated, and referred to in the Plans, Specifications, I-B-5 Agreement No. 6574 and other contract documents, and to full compliance therewith. 11. MODIFICATION OR WITHDRAWAL OF BID. 11.1 Before the Bid Deadline, a submitted Bid may be modified or withdrawn. Notice of such action will be given to the City in writing and signed by the Bidder's authorized representative. A change so made will be so worded as not to reveal the amount of the original Bid. 11.2 A withdrawn Bid may be resubmitted up to the Bid Deadline, provided that it then fully complies with the Bidding Requirements. 11.3 Bid Security will be in an amount sufficient for the Bid as modified or resubmitted. 11.4 Bids may not be modified, withdrawn, or canceled within ninety (90) calendar days after the Bid Deadline unless otherwise provided in Supplementary Instructions to Bidders. 11.5 Proposals may not be withdrawn after said Bid Deadline without forfeiture of the proposal guarantee. 11.6 The withdrawal of a proposal will not prejudice the right of the bidder to submit a new proposal, providing there is time to do so. 11.7 No mention shall be made in the proposal of Sales Tax, Use Tax, City Business License, or any other tax, as all amounts bid will be deemed and held to include any such taxes, which may be applicable. 11.8 No mention shall be made in the proposal of the cost of bonds as all amounts bid will be deemed and held to include any such costs, which may be applicable. 12. OPENING OF BIDS. Bids submitted in the manner required by these instructions and are received on or before the Bid Deadline will be opened publicly. 13. REJECTION OF BIDS. 13.1 The City will have the right to reject all Bids. 13.2 The City will have the right to reject any Bid not accompanied by the required Bid Security or any other item required by the Bidding Documents, or a Bid which is in any other way materially incomplete or irregular. 13.2.1 Unrequested/unauthorized conditions, limitations, or provisions attached to a proposal will render it irregular and may cause its rejection. The completed proposal forms shall be without interlineations, alterations, or erasures. Alternative proposals will not be considered unless specifically requested. No oral, telegraphic, or telephonic proposal, modification, or withdrawal will be considered. 13.3 In the event that any bidder acting as a prime contractor has an interest in more than one proposal, all such proposals will be rejected, and the bidder will be disqualified. This restriction does not apply to subcontractors or suppliers who may submit quotations to more than one bidder, and while doing so, may also submit a formal proposal as a prime contractor. No proposal will be accepted from a bidder who has not been licensed in accordance with the provisions of the State Business and Professions Code. • Agreement No. 6574 14. AWARD 14.1 The City may retain all bids for a period of ninety (90) calendar days for examination and comparison, and to delete any portion of the work from the contract. 14.2 The City will have the right to waive nonmaterial irregularities in a Bid and to accept the lowest responsive Bid as determined by The City. 14.3 The City will have the right to accept Alternates in any order or combination, unless otherwise specifically provided in the Bidding Documents. 14.4 The City will determine the low Bidder on the basis of the sum of the Lump Sum Base Bid plus all unit prices multiplied by their respective estimated quantities as stated in the Bid Form, if any, plus the Contractor Delay Damages multiplied by the "multiplier" as stated in the Bid Form, plus the amounts of all accepted Alternates. 14.4.1 Inclusion of Contractor Delay Damages within the Bid Form is solely for the purpose of determining the low bidder and establishing the City's maximum daily liability as a result of City delays to Contractor, if any, and City has no obligation to pay any daily Contractor Delay Damages except as provided for in these Contract Documents for Compensable Delays. In the event that City becomes liable to Contractor for compensable delays, City agrees to pay Contractor the daily Contractor Delay Damages set forth in the Proposal Form or Contractor's actual daily delay damages, whichever is less, for each day of Compensable Delay as provided for by these Contract Documents. 14.5 The City will select the apparent lowest responsive and responsible Bidder and notify such Bidder within thirty (30) calendar days (unless number of days is modified in Supplementary Instructions to Bidders) after the Bid Deadline or reject all bids. Within ten (10) days after receiving the City's notice that Bidder was selected as the apparent lowest responsible Bidder, Bidder will submit to the City all of the following items: 14.5.1 One original of the Agreement signed by Bidder. 14.5.2 One original of the Payment Bond. 14.5.3 One original of the Performance Bond. 14.5.4 Certificates of Insurance on form provided by the City. 14.5.5 Names of all Subcontractors, with their addresses, telephone number, facsimile number, trade on Bidders' company stationery. Evidence, as required by the City, of the reliability and responsibility of the proposed Subcontractors such as statements of experience, statements of financial condition, and references. 14.5.6 Preliminary Contract Schedule. 14.5.7 Selection of Retention Options and Escrow Agreement for Deposit of Securities in Lieu of Retention and Deposit of Retention. If not submitted, the City will withhold retention. 14.5.8 Cost Breakdown. 14.6 Before award of the Contract, the City will notify Bidder in writing, if the City objects to a Subcontractor proposed by Bidder, in which case Bidder will propose a substitute acceptable to the City. Failure of the City to object to a proposed I-B-7 Agreement No. 6574 14.7 Subcontractor before award will not preclude the City from requiring replacement of any Subcontractor based upon information received subsequent to award, information which cannot be properly evaluated before award due to time constraints, or information relating to a failure to comply with the requirements of the Contract. If Bidder submits the original signed Agreements and all other items within ten (10) days after receiving the City's notification, and all such items comply with the requirements of the Bidding Documents, the City will award the Contract to Bidder by signing the Agreement and returning a signed copy of the Agreement to Bidder. If the City consents to the withdrawal of the Bid of the apparent lowest responsible Bidder, or the apparent lowest responsible Bidder fails or refuses to sign the Agreement or submit to the City all of the items required by the Bidding Documents, within ten (10) days after receiving the City's notification, or the City determines that the Bidder is not financially or otherwise qualified to perform the Contract, the City may reject such Bidder's Bid and select the next apparent lowest responsible Bidder, until all bids are exhausted, or reject all Bids. :: Agreement No. 6574 PROPOSAL FOR THE EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 Date m....�.....�.�_.�.....� 20 Company Name: ..._ ... TO THE CITY OF EL SEGUNDO: In accordance with the City of El Segundo's Notice Inviting Sealed Bids, the undersigned BIDDER hereby proposes to furnish all materials, equipment, tools, labor, and incidentals required for the above stated project as set forth in the Plans, Specifications, and contract documents therefor, and to perform all work in the manner and time prescribed therein. BIDDER declares that this proposal is based upon careful examination of the work site, Plans, Specifications, Instructions to Bidders, and all other contract documents. Submittal of this bid shall be considered evidence that the BIDDER has satisfied himself regarding the contact documents, access and any other field conditions which may affect bid prices. If this proposal is accepted for award, BIDDER agrees to enter into a contact with the City of El Segundo at the unit and/or lump sum prices set forth in the following Bid Schedule. BIDDER understands that failure to enter into a contract in the manner and time prescribed will result in forfeiture to the City of El Segundo of the proposal guarantee accompanying this proposal. BIDDER understands that a bid is required for the entire work, that the estimated quantities set forth in the Bid Schedule are solely for the purpose of comparing bids, and that final compensation under the contract will be based upon the actual quantities of work satisfactorily completed. THE CITY OF EL SEGUNDO RESERVES THE RIGHT TO INCREASE OR DECREASE THE AMOUNT OF ANY QUANTITY SHOWN AND TO DELETE ANY ITEM FROM THE CONTRACT. It is agreed that the unit and/or lurnp sum prices bid include all apparent expenses, taxes, royalties, and fees. In the case of discrepancies in the amounts bid, unit prices shall govern over extended amounts, and words shall govern over figures. If awarded the Contract, the undersigned further agrees that in the event of the BIDDER'S default in executing the required contract and filing the necessary bonds and insurance certificates within ten working days after the date of the City of El Segundo's notice of award of contract to the BIDDER, including sending by U.S. Mail a Public Works Contract for signature by the Awardee, the proceeds of the security accompanying this bid shall become the property of the City of El Segundo and this bid and the acceptance hereof may, at the City of El Segundo's option, be considered null and void. I-C- I Agreement No. 6574 EQUAL EMPLOYMENT OPPORTUNITY COMPLIANCE BIDDER certifies that in all previous contracts or subcontracts, all reports which may have been due under the requirements of any agency, State, or Federal equal employment opportunity orders have been satisfactorily filed, and that no such reports are currently outstanding. AFFIRMATIVE ACTION CERTIFICATION BIDDER certifies that affirmative action has been taken to seek out and consider minority business enterprises for those portions of the work to be subcontracted, and that such affirmative actions have been fully documented, that said documentation is open to inspection, and that said affirmative action will remain in effect for the life of any contract awarded hereunder. Furthermore, BIDDER certifies that affirmative action will be taken to meet all equal employment opportunity requirements of the contract documents. NONCOLLUSION DECLARATION BIDDER declares that the only persons or parties interested in this proposal as principals are those named herein; that no officer, agent, or employee of the City of El Segundo is personally interested, directly or indirectly, in this proposal; that this proposal is made without connection to any other individual, firm, or corporation making a bid for the same work and that this proposal is in all respects fair and without collusion or fraud. I-C-2 Agreement No. 6574 Company Name: BASE BID ITEMS BID SCHEDULE PROJECT NO.: PW 23-02 I-C-3 a Agreement No. 6574 I-C-3b Agreement No. 6574 I-C-3 c Agreement No. 6574 ....._.... - - -- ......... ... ITEM NO. DESCRIPTION S�_.��...� UNI.....T....._, QTYAMOUNT UNIT PRICE 45 _i�..�__ Reset Loop Detectors (El Segundo ........... LS 1 _ ..___ .... ............ $ $ Boulevard / PCH) �a...-.—....... 46 Traffic Signal Modification: El LS 1 $ $ Segundo reet................__..__.._.... TrafficSig al Modificat onsEl w......... 47 Segundo Boulevard / Continental LS 1 $ $ Boulevard 48 Traffic Signal Modification: El LS 1 $ $ Segundo Boulevard / Nash Street 49 Traffic Signal Modification: El LS 1 $ Segundo Boulevard / Douglas Street _.._ El Traffic Signal Modification: _.�����_.��...� .. w.�_��........................... .��..�_ ...... 50 Segundo Boulevard / Aviation LS 1 $ $ Boulevard 51 Miscellaneous Traffic Signal LS 1 $ $ Improvements: Nash Street 52 ....._-.......................... (...... Median Concrete Stamp ed and Colored) SF 15,350 ............_ $ .. $ 53 �..�.��._ in ExistingStamped Clean and Resta_ s....... ............... .�. SF 1,391 ' __... $ ---......_ $ Concrete J �.._54....��..��..� Shrub - 1 Gallon....��..��.,, ..w... ...............EA 1,177 $ ................. $ 55 Shrub - 5 Gallon EA 47 $ $ 56 Tree - 36" Box EA 52 $ $ 57 Decomposed Granite Groundcover SF 25,200 $ $ [58 . Soil Preparation / Fine Grading SF 25,200 $ $ 59 Root Barrier EA 52 $ $ 60 Irrigation System LS 1 $ $ I-C-3d Agreement No. 6574 TOTAL BID WRITTEN IN WORDS: (NOTE: THE AWARD TO THE APPARENT LOWEST BIDDER IS BASED ON THE TOTAL OF BASE BID I"ITEM'S 1-61 ONLY. ALTERNATIVE BID ITEMS SHALL NOT BE CONSIDERED AS PART OF THE LOWEST BID.) All work shall be per these specifications and attachments. Prevailing wage rates apply. The City of El Segundo reserves the right to reject any or all bids, to waive any irregularity, and to take all bids under advisement for a period of ninety (90) calendar days. ALTERNATIVE BID ITEMS EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 .. .�w Item _ ......�._. . _. .. - ............... ------ �.................._ Unit Price Total o. Description Unit Qty M ($) 62A Curb Ramp EA 6 $ $ 63A Relocate Fire Hydrant EA 1 $ $ _ w Furnish andInstall Traffic Signal �...�. _............... . Pole 64A (El Segundo Boulevard / Illinois LS 1 $ $ Street, Pole #3) I-C-3 e Agreement No. 6574 BIDDER'S INFORMATION Company Name; ...._ _... BIDDER certifies that the following information is true and correct: Form of Legal Entity (i.e., individual, partnership, corporation, etc.) If corporation, State of Incorporation (i.e., California) Business Street Address Telephone No......_...........�.. __..... �_......_. Facsimile No. State Contractor's License No. and Class.......... lass C Original Date Issued �............. ......- Expiration Date The following are the names, titles, addresses, and phone numbers of all individuals, fine members, partners, joint venturers, and/or corporate officers having principal interest in this proposal: The date of any voluntary or involuntary bankruptcy judgments against any principal having an interest in this proposal is as follows: All current and prior DBA's, aliases, and/or fictitious business names for any principal having an interest in this proposal are as follows: I-C-4 Agreement No. 6574 BIDDER'S INFORMATION (CONTINUED) Company Name:. Bidder shall list the name of the person who attended the mandatory pre -bid job walk: Title: I-C-5 Agreement No. 6574 IN WITNESS WHEREOF, BIDDER executes and submits this proposal with the namem titles, hands, and seals of all aforenamed principals this _ day of 2 0 *ubscribed and sworn to this day of 24 RrITYM1,11F� :;4 9M Agreement No. 6574 PROPOSAL GUARANTEE BID BOND EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 KNOW ALL MEN BY THESE PRESENTS that, , as BIDDER, and , as SURETY, are held and firmly bound unto the City of El Segundo, in the penal sum of—m__------ DOLLARS which is ten (10%) percent of the total amount bid by BIDDER to the City of El Segundo for the above stated project, for the payment of which suin, BIDDER and SURETY agree to be bound, jointly and severally, firmly by these presents. THE CONDITIONS OF THIS OBLIGATION ARE SUCH that, whereas BIDDER is about to submit a bid to the City of El Segundo for the above stated project, if said bid is rejected, or if said bid is accepted and a contract is awarded and entered into by BIDDER in the manner and time specified, then this obligation shall be null and void, otherwise it shall remain in full force and effect in favor of the City of El Segundo. IN WITNESS WHEREOF the parties hereto have set their names, titles, hands, and seals this day of , 20 BIDDER* SURETY* Subscribed and sworn to this day of _W .,,, , 20........._� NOTARY PUBLIC *Provide BIDDER/SURETY name, title, address and telephone number and the name, title, address and telephone number for authorized representative. I-C-7 Agreement No. 6574 CONTRACTOR'S LICENSE DECLARATION (Business and Professions Code Section 7028.15) 1. BIDDER'S Contractor's License Number is:. Class No... 2. The expiration date of BIDDER'S Contractor License is: 3. BIDDER acknowledges that Section 7028.15(e) of the Business and Professions Code provides as follows: "A licensed contractor shall not submit a bid to a public agency unless his or her contractor's license number appears clearly on the bid, the license expiration date is stated, and the bid contains a statement that representations herein are made under penalty of perjury. Any bid not containing this information, or a bid containing information which is subsequently proven false, shall be considered non -responsive and shall be rejected by the public agency." The undersigned declares, under penalty of perjury, that the representations made by the undersigned in this bid proposal are true and correct. Executed on , 20_, at Signature Typed Name Title Company Name (insert City and State where Declaration signed). I-C-8 Agreement No. 6574 NON -COLLUSION DECLARATION TO BE EXECUTED BY BIDDER AND SUBMITTED WITH BID (pursuant to Cal. Pub. Contract Code § 7106) The undersigned declares: I am the of makingtheforegoing�.�.�.�.._....�._....w..,____.........�.....����__..........- bid, the party The bid is not made in the interest of, or on behalf of, any undisclosed person, partnership, company, association, organization, or corporation. The bid is genuine and not collusive or sham. The bidder has not directly or indirectly induced or solicited any other bidder to put in a false or sham bid. The bidder has not directly or indirectly colluded, conspired, connived, or agreed with any bidder or anyone else to put in a sham bid, or to refrain from bidding. The bidder has not in any manner, directly or indirectly, sought by agreement, communication, or conference with anyone to fix the bid price of the bidder or any other bidder, or to fix any overhead, profit, or cost element of the bid price, or of that of any other bidder that all statements contained in the bid are true. The bidder has not, directly or indirectly, submitted his or her bid price or any breakdown thereof, or the contents thereof, or divulged information or data relative thereto, to any corporation, partnership, company, association, organization, bid depository, or to any member or agent thereof, to effectuate a collusive or sham bid, and has not paid, and will not pay, any person or entity for such purpose. Any person executing this declaration on behalf of a bidder that is a corporation, partnership, joint venture, limited liability company, limited liability partnership, or any other entity, hereby represents that he or she has full power to execute, and does execute, this declaration on behalf of the bidder. I declare under penalty of perjury under the laws of the State of California that the foregoing is true and correct and that this declaration is executed on ................www www ..............-.date], at �.......... ........ [state]. Dated this day of _....._._�..�.�..............__, 20 Name Title Signature I-C-9 Agreement No. 6574 WORKER'S COMPENSATION CERTIFICATION Section 1861 OF THE LABOR CODE (Workers' Compensation) Pursuant to Section 1861 of the Labor Code, the BIDDER, in submitting his/her PROPOSAL, shall sign the following certification: "I am aware of the provisions of Section 3700 of the Labor Code which require every employer to be insured against liability for workers' compensation or to undertake self- insurance in accordance with the provisions of that code, and 1 will comply with such provisions before commencing the performance of the work of this contract." Signature of Bidder: Title: Business Name: Business Address: Telephone Number: Dated this day of ....-, 20 . I-C-10 Agreement No. 6574 BIDDER'S CERTIFICATION OF SUBCONTRACTORS EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 Company Name: As detailed in Section 2-3 (Page II-B-3) of the General Provisions, Bidder certifies that it has listed below all subcontractors who will perform work in excess of one-half of one percent (0.5%) of the total bid price or certifies that the bidder is fully qualified to perform and will perform that portion of the work itself. Description of Subcontractor's Portion of Name of Contractor Work Estimated Subcontractor Address License No. Subcontracted $ Amount (Number and Street) (City, Zip Code) I i _n ­ ,-- (Make copies of this page if additional space is needed) Signature of Bidder Date I-C-11 Agreement No. 6574 REFERENCES Company Name: The following are the names, addresses, and telephone numbers for public agencies for which BIDDER has performed similar work as the prime contractor or major subcontractor within the past five (5) years: 1. Project Title: Location: Name and address of owner Name and current telephone number of person familiar with project Type of Work: Contract amount: $ Date completed: Amount of work done by my/our finn under contract $ Did your firm have any financial interest in Project? _... 2. Project Title: Location: Name and address of owner Naive and current telephone number of person familiar with project Type of Work: Contract amount: $ Date completed: Amount of work done by my/our finn under contract $ Did your finn have any financial interest in Project? _ I-C-12 Agreement No. 6574 3, Project Title: Location: Type of Work: Contract amount: $ �. w Date completed: Amount of work done by my/our firm under contract $ Did your firm have any financial interest in Project? 4. Project Title: E Location: Name and current telephone number of person familiar with project: Type of Work: Contract amount: $ Date completed:._ Amount of work done by my/our firm under contract $ Did your firm have any financial interest in Project? Project Title: Location: I-C-13 Agreement No. 6574 Type of Work: Contract amount: $ �m mmmm mmmmm _ Date completed: Amount of work done by my/our firm under contract $ Did your firm have any financial interest in Project? Bidder may attach additional reference pages if necessary. The following are the names, addresses, and telephone numbers for all brokers and sureties from whom BIDDER intends to procure insurance bonds: I-C-14 Agreement No. 6574 BIDDER'S STATEMENT OF PAST CONTRACT DISQUALIFICATIONS EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW 23-02 0 Company Name: Please state all instances of being disqualified, removed, or otherwise prevented from bidding on, or completing, a federal, state, or local government project due to a violation of a law or safety regulation. l . Have you ever been disqualified from any government contract? Yes ❑ No ❑ 2. If yes, explain the circumstances: 3. Are you registered in accordance with Labor Code § 1725.5 [Note: failure to register requires the City to reject your bid as nonresponsive]? Yes ❑ No ❑ Bidder's Signature Name (Please Print) I-C-15 Agreement No. 6574 Company Name: To be awarded this contract, the successful bidder must procure and maintain the following types of insurance with coverage limits complying, at a minimum, with the limits set forth below: Type of,lnsurattce Limits Commercial general liability: $2,000,000 Business automobile liability: $1,000,000 Workers compensation: Statutory requirement Commercial general liability insurance must meet or exceed the requirements of ISO-CGL Farm No. CG 00 01 11 85 or 88. The amount of insurance set forth above must be a combined single limit per occurrence for bodily injury, personal injury, and property damage for the policy coverage. Liability policies must be endorsed to name the City, its officials, and employees as "additional insureds" under said insurance coverage and to state that such insurance will be deemed "primary" such that any other insurance that may be carried by the City will be excess thereto. Such endorsement must be reflected on ISO Form No. CG 20 10 11 85 or 88, or equivalent. Such insurance must be on an "occurrence," not a "claims made," basis and will not be cancelable or subject to reduction except upon thirty (30) days prior written notice to the City. Insurer will agree in writing to waive all rights of subrogation against the City, its officers, officials, employees and volunteers for losses arising from work performed by Contractor for the City. Automobile coverage must be written on ISO Business Auto Coverage Form CA 00 01 06 92, including symbol 1 (Any Auto). The Consultant must furnish to the City duly authenticated Certificates of Insurance evidencing maintenance of the insurance required under this Agreement, endorsements as required herein, and such other evidence of insurance or copies of policies as may be reasonably required by the City from time to time. Insurance must be placed with admitted insurers with a current A.M. Best Company Rating equivalent to at least a Rating of "A.VII." Certificate(s) must reflect that the insurer will provide thirty (30) day notice of any cancellation of coverage. The Consultant will require its insurer to modify such certificates to delete any exculpatory wording stating that failure of the insurer to snail written notice of cancellation imposes no obligation, and to delete the word "endeavor" with regard to any notice provisions. The City requires Cali�f'o�rnia Worker's Compensation Coverage with the associated Waiver. Out-of- state coverage will not be accepted in lieu of the California coverage, because the work is being performed in the State of California. By signing this form, the bidder certifies that it has read, understands, and will comply with these insurance requirements if it is selected as the City's consultant. Failure to provide this insurance will render the bidder's proposal "nonresponsive." Date I-C-16 Bidder's Signature Agreement No. 6574 END PROPOSAL SECTION I-C-17 Agreement No. 6574 PUBLIC WORKS CONTRACT BETWEEN THE CITY OF EL SEGUNDO AND EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW #23-02 This CONTRACT is entered into this day of , 20 , by and between the CITY OF EL SEGUNDO, a general law city and municipal corporation ("the City") and , a , ("the Contractor"). 1. WORK. A. The Contractor will provide all work required by the Contract Documents (the "Work"). The Contractor agrees to do additional work arising from changes ordered by the City in accordance with the Contract Documents. B. The Contractor and the City agree to abide by the terms and conditions contained in the Contract Documents; C. The Contractor will furnish all of the labor; supplies and materials; equipment; printing; vehicles; transportation; office space and facilities; all tests, testing and analyses; and all matters whatsoever (except as otherwise expressly specified to be furnished by the City) needed to perform and complete the Work and provide the services required of the Contractor by the Contract Documents. D. "Contract Documents" means the Notice Inviting Bids; Instructions to Bidders; Supplementary Instructions to Bidders; Proposal; this Contract; Standard Specifications; Supplementary Conditions; Exhibits; Technical Specifications; List of Drawings; Drawings; Addenda; Notice to Proceed; Change Orders; Notice of Completion; and all other documents identified in the Contract Documents which together form the contract between the City and the Contractor for the Work. The Contract Documents constitute the complete agreement between the City and the Contractor and supersede any previous agreements or understandings. 2. CONTRACT SUM. The City agrees to pay the Contractor a sum not to exceed Dollars and cents S ) for the Work in the manner set forth in the Contract Documents. The City may adjust this amount as set forth in the Contract Documents. 3. TIME FOR PERFORMANCE. A. The Contractor will fully complete the Work within (� working days (the "Contract Time.") Agreement No. 6574 B. The Contract Time will commence when the City issues a Notice to Proceed. The Contract Documents will supersede any conflicting provisions included on the notice to proceed issued pursuant to this Contract. C. The Contractor may not perforin any Work until, The Contractor furnishes proof of insurance as required by the Contract Documents; and i. The City gives the Contractor a written, signed, and numbered purchase order and notice to proceed. D. By signing this Contract, the Contractor represents to the City that the Contract Time is reasonable for completion of the Work and that the Contractor will complete the Work within the Contract Time. E. Should the Contractor begin the Work before receiving written authorization to proceed, any such Work is at the Contractor's own cost and risk. 4. DISPUTES. Disputes arising from this contract will be determined in accordance with the Contract Documents and Public Contracts Code §§ 10240-10240.13. THIRD PARTY CLAIMS. In accordance with Public Contracts Code § 9201, the City will promptly inform the Contractor regarding third -party claims against the Contractor, but in no event later than ten (10) business days after the City receives such claims. Such notification will be in writing and forwarded in accordance with the "Notice" section of the Contract Documents. As more specifically detailed in the Contract Documents, the Contractor agrees to indemnify and defend the City against any third -party claim. 6. TAXPAYER IDENTIFICATION NUMBER. The Contractor will provide the City with a Taxpayer Identification Number. 7. PERMITS AND LICENSES. Unless otherwise provided, the Contractor, at its sole expense, will obtain and maintain during the Contract Time, all necessary permits, licenses, and certificates that may be required in connection with the Work. 8. OWNERSHIP OF DOCUMENTS. All documents, data, studies, drawings, maps, models, photographs and reports prepared by the Contractor under the Contract Documents are the City's property. The Contractor may retain copies of said documents and materials as desired, but will deliver all original materials to the City upon the City's written notice. 9. INDEMNIFICATION. The Contractor agrees to indemnify, defend, and hold the City harmless as set forth in the Contract Documents. The requirements as to the types and limits of insurance coverage to be maintained by the Contractor as required by the Contract Documents, and any approval of such insurance by the City, are not intended to and will I-D-2 Agreement No. 6574 not in any manner limit or qualify the liabilities and obligations otherwise assumed by the Contractor pursuant to the Contract Documents, including, without limitation, to the provisions concerning indemnification. 10.INDEPENDENT CONTRACTOR. The City and the Contractor agree that the Contractor will act as an independent contractor and will have control of all work and the manner in which is it performed. The Contractor will be free to contract for similar service to be performed for other employers while under contract with the City. The Contractor is not an agent or employee of the City and is not entitled to participate in any pension plan, insurance, bonus or similar benefits the City provides for its employees. Any provision in this Contract that may appear to give the City the right to direct the Contractor as to the details of doing the work or to exercise a measure of control over the work means that the Contractor will follow the direction of the City as to end results of the work only. 11. AUDIT OF RECORDS. The Contractor will maintain full and accurate records with respect to all services and matters covered under this Contract. The City will have free access at all reasonable times to such records, and the right to examine and audit the same and to make transcript therefrom, and to inspect all program data, documents, proceedings and activities. The Contractor will retain such financial and program service records for at least three (3) years after termination or final payment under the Contract Documents. 12. NOTICES. All communications to either party by the other party will be deemed made when received by such party at its respective name and address as follows: The City The Contractor City of El Segundo -Public Works 350 Main Street El Segundo, CA 90245 Attn: Attn: Any such written communications by mail will be conclusively deemed to have been received by the addressee three (3) days after deposit thereof in the United States Mail, postage prepaid and properly addressed as noted above. In all other instances, notices will be deemed given at the time of actual delivery. Changes may be made in the names or addresses of persons to whom notices are to be given by giving notice in the manner prescribed in this paragraph. 13. NO THIRD PARTY BENEFICIARY. This Contract and every provision herein is for the exclusive benefit of the Contractor and the City and not for the benefit of any other party. There will be no incidental or other beneficiaries of any of the Contractor's or the City's obligations under this Contract. 14. INTERPRETATION. This Contract was drafted in, and will be construed in accordance with the laws of the State of California, and exclusive venue for any action involving this Contract will be in Los Angeles County. I-D-3 Agreement No. 6574 15. EFFECT OF CONFLICT. In the event of any conflict, inconsistency, or incongruity between any provision of the Contract Documents, precedence will be as follows: A. This Contract; B. The Standard Specifications; and C. Precedence of documents as determined in the Standard Specifications,. 16. SEVERABILITY. If any portion of the Contract Documents are declared by a court of competent jurisdiction to be invalid or unenforceable, then such portion will be deemed modified to the extent necessary in the opinion of the court to render such portion enforceable and, as so modified, such portion and the balance of this Contract will continue in full force and effect. 17. AUTHORITY/MODIFICATION. The Parties represent and warrant that all necessary action has been taken by the Parties to authorize the undersigned to execute this Contract and to engage in the actions described herein. This Contract may be modified by written amendment. The City's city manager, or designee, may execute any such amendment on the City's behalf. 18. ACCEPTANCE OF FACSIMILE SIGNATURES. The Parties agree that this Contract, agreements ancillary to this Contract, and related documents to be entered into in connection with this Contract will be considered signed when the signature of a party is delivered by facsimile transmission. Such facsimile signature will be treated in all respects as having the same effect as an original signature. 19. COVENANTS AND CONDITIONS. The parties agree that all of the provisions hereof will be construed as both covenants and conditions, the same as if the words importing such covenants and conditions had been used in each separate paragraph. 20. CAPTIONS. The captions of the paragraphs of this Contract are for convenience of reference only and will not affect the interpretation of this Contract. 21. TIME IS OF ESSENCE. Time is of the essence for each and every provision of the Contract Documents. I-D-4 Agreement No. 6574 IN WITNESS WHEREOF the parties hereto have executed this contract the day and year first hereinabove written. CITY OF EL SEGUNDO City Manager Tracy Weaver, City Clerk for Mark D. Hensley City Attorney Insurance Reviewed by: tam Taxpayer ID No. Contractor State License No.: Contractor City Business License No.: Agreement No. 6574 FAITHFUL PERFORMANCE BOND EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW #23-02 Bond No. Bond Fee: ("PRINCIPAL") and a corporation incorporated under the laws of the State of and licensed by the State of California to execute bonds and undertakings as sole surety, as surety ("SURETY"), are held and finnly bound unto the CITY OF EL SEGUNDO ("CITY") in the sum of DOLLARS and cents ($ ), lawful money of the United States, which may be increased or decreased by a rider hereto executed in the same manner as this bond, for the payment of which sum PRINCIPAL and SURETY bind themselves, their successors, and assigns, jointly and severally, by this instrument. PRINCIPAL or SURETY will apply this bond for the faithful performance of any and all of the conditions and stipulations set forth in this bond, SPECIFICATIONS NO. PW 23-02, and the public works contract executed with such Specifications. In the case of any default in the performance of the conditions and stipulations of this undertaking, it is agreed that PRINCIPAL or SURETY will apply the bond or any portion thereof, to the satisfaction of any damages, reclamation, assessments, penalties, or deficiencies arising by reason of such default. BOND CONDITIONS 1. PRINCIPAL will construct the public improvements identified in SPECIFICATIONS NO. PW 23-02, a copy of which is on file with CITY's Engineering Division ("Public Project"). Such performance will be in accordance with CITY's plans and profiles (CITY DRAWING FILE NO. PW 23-02) which are made a part of this bond when said plans and profiles are approved by the City Council and filed with CITY's Engineering Division. CITY has estimated the required amount of the bond as shown above. 2. PRINCIPAL's work on the Public Project will be done in accordance with CITY's plans and specifications and with any permit issued by CITY. Should PRINCIPAL fail to complete all required work within the time allowed, CITY may, at its sole discretion, cause all required work to be done and the parties executing the bond will be firmly bound for the payment of all necessary costs therefor. 3. PRINCIPAL will guarantee its work against any defective work, labor, or materials on the Public Project for a period of one (1) year following the Public Project's I-E-1 Agreement No. 6574 completion and acceptance by CITY. Should PRINCIPAL fail to correct its work against any defective work, labor, or materials, CITY may, at its sole discretion, cause all required work to be done and the parties executing the bond will be firmly bound for the payment of all necessary costs therefor. 4. This bond is conditioned upon and guarantees due compliance with all applicable law including, without limitation, the El Segundo Municipal Code ("ESMC"). 5. SURETY, for value received, agrees that no changes, extensions of time, alteration or modification of SPECIFICATIONS NO. PW 23-02 or of the obligation to be performed will in any way affect its obligation on this bond, and it waives notice of any such change, extension of time, alteration or modification of the contract documents or of the obligation to be performed. 6. This bond consists of this instrument; the plans and specifications identified above; and the following two (2) attached exhibits all of which are incorporated herein by reference: A., A certified copy of the appointment, power of attorney, bylaws or other instrument entitling or authorizing the persons executing this bond to do so; B. A certificate issued by the county clerk for the county in which SURETY's representative is located conforming with California Code of Civil Procedure § 995.640 and stating that SURETY's certificate of authority has not been surrendered, revoked, cancelled, annulled, or suspended, or in the event that it has, that renewed authority has been granted; and 7. Should PRINCIPAL perform its obligations within the time allowed, PRINCIPAL's obligation will be void one (1) year following the acceptance of the performance by CITY; otherwise this obligation will remain in full force and effect. [SIGNATURES ON FOLLOWING PAGE] I-E-2 Agreement No. 6574 SlGNED AND SEALED this. day • 2* (2) Bond shall be effective for one (1) year after acceptance of the job. M Agreement No. 6574 LABOR AND MATERIALS BOND EL SEGUNDO BOULEVARD IMPROVEMENT PROJECT PROJECT NO.: PW #23-02 Bond No. Bond Fee: as principal ("PRINCIPAL") and ,,,,,,,,__ .............. _,., a corporation incorporated under the laws of the State of mmmmm_,_, and licensed by the State of California to execute bonds and undertakings as sole surety, as surety ("SURETY"), are held and firmly bound unto the CITY OF EL SEGUNDO ("CITY") in the sum of DOLLARS and cents lawful money of the United States, which may be increased or decreased by a rider hereto executed in the same manner as this bond, for the payment of which sum PRINCIPAL and SURETY bind themselves, their successors, and assigns, jointly and severally, by this instrument. This bond is conditioned upon and guarantees payment by PRINCIPAL to contractors, subcontractors, and persons renting equipment; payment by PRINCIPAL and all PRINCIPAL'S subcontractors for all materials, provisions, provender, or other supplies, and equipment used in, upon, for or about the performance of the work contemplated in SPECIFICATIONS NO. PW 23-02 ("Public Project"), the public works contract executed for such Public Project, and for all work or labor of any kind performed for the Public Project. In the case of any default in the performance of the conditions and stipulations of this undertaking, it is agreed that PRINCIPAL or SURETY will apply the bond or any portion thereof, to the satisfaction of any damages, reclamation, assessments, penalties, or deficiencies arising by reason of such default. BOND CONDITIONS 1. PRINCIPAL will construct the public improvements identified in SPECIFICATIONS NO. PW 23-02, and the public works contract executed for such Specifications, copies of which is on file with CITY's Engineering Division ("Public Project"). Such performance will be in accordance with CITY's plans and profiles (CITY DRAWING FILE NO. PW 23-02), which are made a part of this bond when said plans and profiles are approved by the City Council and filed with CITY's Engineering Division. 2. PRINCIPAL will pay all contractors, subcontractors, and persons renting equipment. 3. PRINCIPAL will pay for all materials and other supplies, for equipment used in, on, for or about the performance of the Public Project, and will pay for all work and labor Agreement No. 6574 thereon, 4. This bond is conditioned upon and guarantees due compliance with all applicable law including, without limitation, the El Segundo Municipal Code ("ESMC"). 5. SURETY, for value received, agrees that no changes, extensions of time, alteration or modification of SPECIFICATIONS NO. PW 23-02, or of the obligation to be performed will in any way affect its obligation on this bond, and it waives notice of any such change, extension of time, alteration or modification of the contract documents or of the obligation to be performed. 6. This bond consists of this instrument; the plans and specifications identified above; and the following TWO (2) attached exhibits all of which are incorporated herein by reference: A. A certified copy of the appointment, power of attorney, bylaws or other instrument entitling or authorizing the persons executing this bond to do so; and B. A certificate issued by the county clerk for the county in which SURETY's representative is located conforming with California Code of Civil Procedure § 995.640 and stating that SURETY's certificate of authority has not been surrendered, revoked, cancelled, annulled, or suspended, or in the event that it has, that renewed authority has been granted. 7. Should PRINCIPAL perform its obligations within the time allowed, PRINCIPAL's obligation will be void upon the acceptance of the performance by CITY; otherwise this obligation will remain in full force and effect. [SIGNATURES ON FOLLOWING PAGE] I-F-2 Agreement No. 6574 SIGNED AND SEALED this day of PRINCIPAL's PRESIDENT PRINCIPAL's SECRETARY 20 SURETY's PRESIDENT SURETY'sSECRETARY SURETY's MAILING ADDRESS: NOTE: (1) ALL signatures must be acknowledged by a notary public. Return one (1) original to City Clerk's Office. I-F-3 Agreement No. 6574 SECTION II - GENERAL REQUIREMENTS CITY OF EL SEGUNDO PUBLIC WORKS DEPARTMENT GENERAL SPECIFICATIONS 1. REGISTRATION OF CONTRACTORS No bid will be accepted from a Contractor who has not been licensed in accordance with the provisions of the laws of the State of California relating to licensing of contractors, for the type of work to be performed under this Contract. 2. INSURANCE AND CITY BUSINESS LICENSE Contractor and Sub -Contractors will obtain appropriate insurance and a City Business License before execution of the construction contract. 3. EMERGENCY INFORMATION The names, addresses and telephone numbers of the Contractor and Sub -Contractors, or their representatives, will be filed with the City Engineer and the City Police Department BEFORE PERFORMING WORK. 4. FURNISHINQ OF WATER Water necessary for the prosecution of the work as herein specified will be furnished by the City in the following manner: The Contractor will deposit with the City Water/Wastewater Division the sum of Three Hundred Fifty Dollars ($ 350.00) to insure against damage to a 2 ''/z" Fire Hydrant water meter, which will be furnished and installed by the City at a point convenient to the site of the work. This deposit will be refunded to the Contractor upon completion of the Project if, after removal and inspection of said meter by the City, it is found to be in satisfactory condition. In event of damage to this meter while under the jurisdiction of the Contractor, all or any part of said deposit may be retained by the City. An non-refundable Activation Fee of One Hundred Dollars ($100.00) will be charged to the Contractor upon activation of the temporary meter. All water used from the temporary meter will be metered and charged to the Contractor at the prevailing rate plus the current daily meter rental rate. The Contractor will be charged a $15 reconnect fee if the Contractor wishes the City to relocate the temporary meter to another hydrant. Cost of water to be used shall be included in the Contract bid price of the items of work relevant to its use. II-A-1 Agreement No. 6574 5. CALIFORNIA - OCCUPATIONAL SAFETY &µµHEALTH ADMINISTRATION All work performed under this contract will be done in strict compliance with the Cal - OSHA Rules and Regulations, latest edition. 6. SOUND CONTROL., The Contractor will comply with all local sound control and noise level rules, regulations and ordinances that apply to any work performed pursuant to the contract. Each internal combustion engine, used for any purpose on the Project or related to the Project, will be equipped with a muffler of a type recommended by the manufacturer. No internal combustion engine will be operated on the Project without said muffler. The use of loud signals will be avoided in favor of light warnings except those required by safety laws for the protection of personnel. 7. AIR POLLUTION CONTROL The Contractor is put on notice that he must abide by all existing rules and regulations of the SCAQMD (South Coast Air Quality Management District), relating to all operations or equipment which discharge visible emissions or solid or liquid particles to the atmosphere. 8. WORKER UNIFORMS All workers under the employment of the Contractor or his/her Sub -Contractor shall wear the appropriate safety apparel as required by the latest edition of the Work Area Traffic Control Handbook (WATCHBOOK) while working in the public right -of way. Workers shall wear the correct Class visibility apparel for the speed zone working in, as required in the WATCHBOOK. II-A-2 Agreement No. 6574 CITY OF EL SEGUNDO PUBLIC WORKS DEPARTMENT GENERAL PROVISIONS 0-0 STANDARQ S,PE IFICTH)NS 0-1 GENERAL Except as modified by these Standard Specifications, the provisions of the latest edition of the "Standard Specifications for Public Works Construction" ("Greenbook") and its supplements prepared and promulgated by the Southern California Chapters of the American Public Works Association and the Associated General Contractors of America, constitute the Standard Specifications for this project. 0-2 NUMBERING OF SECTIONS The numbering contained within the Standard Specifications of the Contract Documents is intended to correspond with Greenbook numbering. 1-2 DEFINITIONS The following subsection is added to Subsection 1-2 of the Greenbook. 1-2.1 ADDITIONAL DEFINITIONS Acceptance — The date on which the City Council accepts the Work as complete. Architect, Design Engineers, Soils Engineer, Structural Engineers - Advisors employed by the City. City Council - The body constituting the awarding authority of the City Compensable Delay -- a delay entitling the Contractor to an adjustment of the Contract Sum and an adjustment of the Contract Time in accordance with this Agreement. Due Notice - A written notification, given in due time, of a proposed action where such notification is required by the contract to be given a specified interval of time (usually 48 hours or two working days) before the commencement of the contemplated action. Notification may be from Engineer to Contractor or from Contractor to Engineer. Engineer - The City Engineer, or designee, as defined in the Greenbook. Unless otherwise provided, all correspondence and decisions made relative to the contract will be by the City Engineer or his designated representative. PCC — California Public Contract Code. II-B-1 Agreement No. 6574 Prompt - The briefest interval of time required for a considered reply, including time required for approval of a governing body. Public Works Director — The City's Public Works Director, or designee. State Standard Specifications - State of California Standard Specifications, latest edition and supplements, California State Transportation Agency, Department of Transportation (Caltrans). Working Days - A working day is defined as any day, except Saturdays, Sundays, legal holidays and days when work is suspended by the Engineer, as provided in Subsection 6-3 and days determined to be non -working in accordance with Subsection 6-7, "Time of Completion." 1-3 ABBREVIATIONS The following Subsection is added to Subsection 1-3 of the Greenbook. 1-3.1 The following abbreviations are added to Subsection 1-3 of the Greenbook: AAN American Association of Nurserymen AGC Associated General Contractors of America AISC American Institute of Steel Construction APWA American Public Works Association ASME American Society of Mechanical Engineers IEEE Institute of Electric and Electronic Engineers NEC National Electric Code Green Book The most current edition of the Standard Specification for Public Works Construction, and subsequent supplements prepared by Public Works Standards, Inc. WATCH Work Area Traffic Control Handbook SPPWC Standard Plans for Public Works Construction by the American Public Works Association SSPWC Standard Specifications for Public Works Construction by the American Public Works Association ASA American Standard Association CITY City of El Segundo 1-6 BIDDING AND SNBMISSION OF THE BID Subsection 1-6 Bidding and Submission of the Bid of Greenbook is deleted in its entirety and replaced with the following subsection. II-B-2 Agreement No. 6574 1-6.1 GENERAL Except as provided in PCC § § 4100 et. seq., each bidder will file with its bid the name and location of the place of business of each subcontractor who will perform work or labor or render service to the prime contractor in or about the construction of the work or improvement, or a subcontractor licensed by the State of California who, under subcontract to the prime contractor, specifically fabricates and installs a portion of the work or improvement according to detailed drawings contained in the plans and specifications, in an amount in excess of one-half of one percent of the prime contractor's total bid. Only one subcontractor will be listed for each portion of the work, which portion will be defined in the bid. In each instance, the nature and extent of the work to be sublet will be described. The failure of the Contractor to specify a subcontractor, or the listing of more than one subcontractor for the same portion of the work, constitutes an agreement by the Contractor that it is fully qualified to perform that portion itself and that it will perform that portion itself. The Contractor must have the City Council's written consent to substitute a subcontractor other than that designated in the original bid, to permit any subcontract to be assigned or transferred, or to allow a subcontract to be performed by other than the original subcontractor. Subcontracting of work for which no subcontractor was designated in the original bid, and which is more than one-half of one percent of the work, will be allowed only in cases of public emergency or necessity, and then only after a finding reduced to writing as a public record of the City Council setting forth the facts constituting the emergency or necessity. Violation of any of the above provisions will be considered a breach of the Contract, and the City may terminate the Contractor's control over the Work, cancel the contract, or assess the Contractor a penalty of not more than ten percent of the subcontract involved. All persons engaged in the work, including subcontractors and their employees will be considered as employees of the Contractor. The Contractor will be solely responsible for and have control over construction means, methods, techniques, sequences, procedures, and the coordination of all portions of the Work. The City will deal directly with, and make all payments to, the prime Contractor. When subcontracted work is not being prosecuted in a satisfactory manner, the Contractor will be notified to take corrective action. The Engineer may report the facts to the City Council. If the City Council so orders, and on receipt by the Contractor of written instructions from the Engineer, the subcontractor will be removed immediately from the Work. That subcontractor will not again be employed on the Work. If licensure or proper licensure is controverted, then proof of licensure pursuant to this section must be made by production of a verified certificate of licensure from the II-B-3 Agreement No. 6574 Contractors' State License Board which establishes that the individual or entity bringing the action was duly licensed in the proper classification of contractors at all times during the performance of any act or contract covered by the action. Nothing in this subdivision requires any person or entity controverting licensure or proper licensure to produce a verified certificate. When licensure or proper licensure is controverted, the burden of proof to establish licensure or proper licensure is on the licensee. 1-6.2 ADDITIONAL RESPONSIBILITY Add the following to Subsection 1-6.2 Additional Responsibility: The Contractor will submit experience statements for each subcontractor who will perform contract work that amounts to more than ten percent (10%) of the Work. 1-7.2 CONTRACT BONDS The following paragraph is added to Subsection 1-7.2 of the Greenbook. The Faithful Performance Bond and the Labor and Materials Bond must be paid and in effect for one year after the acceptance of the job by the City in accordance with the guarantee required by Subsection 3-13.1. 2-0 SCOPE OF THE WORK The following subsections 2-1.1 and 2-1.2 are added to the Greenbook. 2-1.1 ACCESS TO PROJECT SITE Not later than the date designated in the City Notice to Proceed, the City will provide access to the real property and facilities upon which the Work is to be performed, including access to real property and facilities designated in the Contract Documents for the Contractor's use. 2-1.2 OWNERSHIP AND USE OF CONTRACT DOCUMENTS, The Contract Documents and all copies furnished to or provided by the Contractor are the City's property and may not be used on other work. 2-2 PERMITS The following paragraph will be added to Subsection 2-2 of Greenbook: The Contractor will apply for permits required by the City. These permits will be issued on a "no -fee" basis. However, the Contractor must pay for and obtain all other permits from other govermnental and utility agencies necessitated by their operations. II-B-4 Agreement No. 6574 All bonding fees, (overweight and oversized vehicle pen -nit fees) inspection permit fees or other fees charged or required for such permits must be paid by the Contractor. These costs will be included in the bid item provided. If no bid item is included, costs will be included in the various items of work, and no additional payment will be allowed. 2-3 RIGHT-OF-WAY The following subsection is added to Subsection 2-3 of the Greenbook. 2-3.1 ADDITIONAL WORD A li L, AS -AND FACILITIES When the Contractor arranges for additional temporary work areas and facilities, the Contractor will provide the City with proof that the additional work areas or facilities have been left in a condition satisfactory to the owner(s) of said work areas or facilities before acceptance of the work. 2-9 CHANGED CONDITIONS Subsection 2-9, Changed Conditions, is deleted in its entirety and replaced with the following subsection: If the Contractor encounters concealed or unknown conditions that differ materially from those anticipated or expected ("changed conditions"), the Contractor will immediately notify the Engineer in writing of such changed conditions (upon discovery and before disturbing such changed conditions), as provided in Subsection 6-11, so that the Engineer can detennine if such conditions require design details that differ from those design details shown in the Contract Documents. Notwithstanding the time period set forth in Subsection 6-11.3, the Contractor is liable to the City for any extra costs incurred as a result of the Contractor's failure to promptly give such notice. Changed conditions include, without limitation, the following: Subsurface or latent physical conditions differing materially from those represented in the Contract Documents; 2. Unknown physical conditions of an unusual nature differing materially from those ordinarily encountered and generally recognized as inherent in work of the character being performed; and Material differing from what is represented in the Contract which the Contractor believes may be hazardous waste as defined in California Health & Safety Code § 25117 that is required to be removed to a Class I, II, or III disposal site in accordance with applicable law. The Engineer will promptly investigate conditions that appear to be changed conditions. The Engineer's decision, and any dispute regarding that decision, will be II-B-5 Agreement No. 6574 made in accordance with Section 6-11 except that the Engineer will render a decision promptly. Any information provided pursuant to INFORMATION AVAILABLE TO BIDDERS is subject to the following provisions: The information is made available for the Bidders' convenience and is not a part of the Contract. 2. The City has not determined the accuracy or completeness of such information and all such information is made available to Bidders without any representation or warranty by the City whatsoever as to its accuracy, completeness, or relevancy. 1 Bidders will independently evaluate such information for their use and will be solely responsible for use or interpretation of such information. Any such use or interpretation will not be the basis of any claim against the City. 2-10 DISPUTED WORK Subsection 2-10 is deleted in its entirety and replaced by the following subsection. If the Contractor and the City do not reach agreement on disputed work, the City may direct the Contractor to proceed with the work. Any payment for the disputed work will be determined pursuant to the claims procedures in these Standard Specifications. Although not to be construed as proceeding under extra work provisions, the Contractor will keep and furnish records of disputed work as required by the Contract Documents. 3-0 CONTROL OF THE WORK 3-7 CONTI AC T DOCI MENTs Subsection 3-7 of the Greenbook is replaced by the following subsection. 3-7.1 GENERAL The Contractor will maintain the following at the Work site: One as -built copy of the Plans and Specifications, in good order and marked to record current changes and selections made during construction. As -built plans must be submitted to the City representative for approval before the City pays a final retention amount. 2. The current accepted Contract Schedule. 3, Shop Drawings, Product Data, and Samples. II-B-6 Agreement No. 6574 4. Approved permits from other agencies, including Cal -OSHA permits for trench shoring. 5. All other required submittals. The Plans, Specifications, and other Contract Documents will govern the Work. The Contract Documents are intended to be complementary and cooperative and to describe and provide for a complete project. Anything in the Specifications and not on the Plans, or on the Plans and not in the Specifications, will be as though shown or mentioned in both. Payment for any items on the plans for which there is no specific bid item will be included in the various items of work or in any item to which it is appurtenant. If the Contractor performs any work which it knows or should know involves an error, inconsistency, or omission without notifying and obtaining written consent from the Engineer, the Contractor will be responsible for the resulting losses, including, without limitation, the costs of correcting defective work. 3-7.2 PRECEDENCE OF CONTRAC_I I:)OClW1CyENT „ The following paragraph is added to subsection 3-7.2 of the Greenbook: As the figured dimensions shown on the plans and in the specifications of the Contract may not in every case agree with scaled dimensions, the figured dimensions will he followed in preference to the scaled dimensions, and plans to a large scale will be followed in preference to the plans to a small scale. Should it appear that the work to be done, or any of the matters relative thereto, are not sufficiently detailed or explained in the Contract, the Contractor will apply to the Engineer for such further explanations as may be necessary, and will conform thereto as part of the Contract so far as may be consistent with the terns thereof. Any items shown on drawings and not mentioned in the specifications will be of like effect as if shown or mentioned in both. 3-7.3 `(JI ACYOFPLANS,e-%NDSPECIF'ICATIONS Although it is believed that much of the information pertaining to conditions and existing utilities that may affect the cost of the Work will be shown on the Plans or indicated in the Specifications, the City does not warrant the completeness or accuracy of such information. The Contractor will carefully study and compare each of the Contract Documents with the others and with information furnished by the City and will promptly report in writing to the Engineer any errors, inconsistencies, or omissions in the Contract Documents or inconsistencies with applicable law observed by the Contractor. II-B-7 Agreement No. 6574 The Contractor will take field measurements, verify field conditions, perform soil investigations, and carefully compare with the Contract Documents such field measurements, conditions, and other information known to the Contractor before commencing the Work. Errors, inconsistencies, or omissions discovered at any time will be promptly reported in writing to the Engineer. 3-10 SURVEYING Subsection 3-10.3, Survey Service, is added to subsection 3-10 of the Greenbookw 3-10.3 SURVEY SERVICE 3-10.3.1 CONSTRLJCTIf N SURVEYING The Contractor will provide for all construction surveying required to layout, monitor and complete the work. The surveying will be performed by a Land Surveyor or Civil Engineer authorized to practice land surveying by the State of California. The Project Benchmark is shown on the plans. The Contractor will establish all necessary control lines based on the plans and record information on file with the County of Los Angeles Surveyor and the Engineer. It is the responsibility of the Contractor to protect the survey control as shown on the plans. If the survey control is destroyed or disturbed during construction, the Contractor will provide for resetting their and file appropriate documents with the County of Los Angeles at the direction of the Engineer. Computations, survey notes, and other data used to accomplish the work will be neat, legible and accurate. Copies of all computations, survey notes, and other data (electronic format may be required) will be furnished to the Engineer before beginning work that requires their use. 3-10.3.2 MEASUREMENT AND PAYMENT Construction Survey — Unless a separate bid item is provided, payment will be considered included in the other items of the bid and no additional payment will be made therefore. 3-12.1 CLEANUP AND DUST CONTROL Subsection 3-12.1, General Work Site Maintenance, of the Greenbook is deleted in its entirety and replaced by the following subsections. II-B-8 Agreement No. 6574 3-12.1.1 GENERAL On any construction project requiring trenching within public streets and for which total trenching is in excess of 500 feet, the Contractor will be required to sweep the worksite utilizing a pick-up type street sweeper a minimum of once daily. 3-12.1.2 WATERING Water- for dust control caused by Contractor's operations or the passage of traffic through the work will be applied as necessary or as directed by the Engineer. Water for the above or other purposes may be obtained from any approved source. If the Contractor chooses to use a City fire hydrant upon placing deposits and fees as described in this contract, the Engineer will cause a meter to be installed. All water used from the hydrant will be metered and charged to the Contractor at the prevailing rate plus the current daily meter rental rate. The Contractor will be charged a $15 reconnect fee if the Contractor wishes to move the meter to a different hydrant. Costs of water to be used will be included in the cost of various bid items. 3-12 6 WATER POl L1~?"FION CONTROL The following requirements are added to establish storm water and urban runoff pollution prevention controls. (a) Storm or construction generated water containing sediment such as, construction waste, soil, slurry from concrete/asphalt concrete saw cutting operations, clean up of concrete transit mixers or other pollutants from construction sites and parking areas will be retained or controlled on site and will not be permitted to enter the storm drain system. (b) Temporary sediment filtering systems such as sandbags, silt fences, or gravel berms will be utilized to trap sediment so that only filtered water enters the City's storm drain system. Proper clean up and disposal of settled sediment and the filtering system will be the responsibility of the Contractor. (c) Discharge of concrete transit mixer wash water on to approved dirt areas (sub -grade area designated for new concrete construction for example) is acceptable. Discharge on to private property, parkway areas, or the street is not permitted. (d) Plastic or other impervious covering will be installed where appropriate to prevent erosion of an otherwise unprotected area, along with any other runoff control devices deemed appropriate by the City. (e) Excavated soil stored on the site will be covered in a manner that minimizes the amount of sediments running into the storm drain system, street or adjoining properties. Agreement No. 6574 (f) No washing of construction or other industrial vehicles and equipment will be allowed adjacent to a construction site. During the rainy season (October 15 to April 15), Contractor will keep at the construction site sufficient materials and labor to install temporary sediment filtering systems and other water pollution prevention control measures. These control measures will be in place and maintained by the Contractor on a daily basis on days when construction is not in progress due to rain. (h) All costs associated with water pollution control will be borne by the Contractor. Any expense incurred by the City to expeditiously respond to storm drain contamination resulting from Contractor's failure to implement water pollution control measures will be charged to the Contractor. 3-12.7 PROTECTION AND RESTORATION OF EXISTING IMPROVEMENTS The following requirements are added to Section 3-12: Where existing traffic striping, pavement markings, and curb markings are damaged or their reflectively reduced by the Contractor's operations, such striping or markings will also be considered as existing improvements and the Contractor will replace such improvements. Relocations, repairs, replacements, or re -establishments will be at least equal to the existing improvements and will match such improvements in finish and dimensions unless otherwise specified. 3-12.8 PUBLIC CONVENIENCE AND SAFETY The following requirement is added to Section 3-12: Unless otherwise specified all traffic control will be performed in accordance with the Work Area Traffic Control Handbook (WATCH) Latest Edition, published by Building News. 3-12.8.1 TRAFFIC AND ACCESS The Contractor will notify the occupants of all affected properties at least 48 hours before any temporary obstruction of access. Vehicular access to property line will be maintained except as required for construction for a reasonable period of time. No overnight closure of any driveway will be allowed except as permitted by the Engineer. At least one (1) twelve (12) foot wide traffic lane will be provided for each direction of travel on all streets at all times except as permitted by the Engineer. The traffic lanes will be maintained on pavement, and will remain unobstructed. All work requiring that a lane be closed or a lane moved right or left will be noticed to the traveling public by use of City approved lighted arrow boards. Il-B-10 Agreement No. 6574 Clearances from traffic lanes will be five (5) feet to the edge of any excavation and two (2) feet to the face of any curb, pole, barricade, delineator, or other vertical obstruction. One four (4) foot wide paved pedestrian walkway will be maintained in the parkway area on each side of all streets. The clearance from the pedestrian walkway to any traffic lane will be five (5) feet. Pedestrians and vehicles will be protected from all excavations, material storage, and/or obstructions by the placement of an adequate number of lighted barricades (minimum two (2)) at each location, one (1) at each end of the obstruction or excavation), which will have flashing lights during darkness. Barricades will be Type I or Type II per Section 7-3 of the WATCH Manual and lights will be Type A per Section 7-6 of the "Work Area Traffic Control Handbook" (WATCH). 3-12.8.2 STREET CLOSURES„ D TOt,JRS, BARRICADES Street closures will not be allowed except as specifically permitted by the Engineer. The Contractor will prepare any traffic control or detour plans that may be required as directed by the Engineer. Lane transitions will not be sharper than a taper of thirty (30) to one (1). Temporary traffic channelization will be accomplished with barricades or delineators. Temporary striping will not be allowed unless specifically permitted by the Engineer. The Contractor will prepare any plans that may be required for temporary striping to the satisfaction of the Enginecr. In no cvent will temporary striping be allowed on finish pavement surfaces, which are to remain. Where access to driveway or street crossings need to be maintained, minimum 1 1/4 inch thick steel plating will be used to bridge the trench. All steel plating will have temporary asphalt concrete 1:12 minimum sloped ramps to assist vehicles to cross comfortably over the plates and have a non-skid surface. Plates subject to vehicle high traffic speeds and in residential areas will be secured by welding at the discretion of the Engineer. 3-12.8.3 1 RQ.,T. L' ,µ`ION OF THE PI, BLI'C It is part of the service required of the Contractor to make whatever provisions are necessary to protect the public. The Contractor will use foresight and will take such steps and precautions as his operations warrant to protect the public from danger, loss of life or loss of property, which would result from interruption or contamination of public water supply, interruption of other public service, or from the failure of partly completed work or partially removed facilities. Unusual conditions may arise on the Project which will require that immediate and unusual provisions be made to protect the public from danger or loss of life, or damage to life and property, due directly or indirectly to prosecution of work under- this contract. II-B-11 Agreement No. 6574 Whenever, in the opinion of the Engineer, an emergency exists against which the Contractor has not taken sufficient precaution for the public safety, protection of utilities and protection of adjacent structures or property, which may be damaged by the Contractor's operations and when, in the opinion of the Engineer, immediate action will be considered necessary in order to protect the public or property due to the Contractor's operations under this contract, the Engineer will order the Contractor to provide a remedy for the unsafe condition. If the Contractor fails to act on the situation immediately, the Engineer may provide suitable protection to said interests by causing such work to be done and material to be furnished as, in the opinion of the Engineer, may seem reasonable and necessary. The cost and expense of said labor and material, together with the cost and expense of such repairs as are deemed necessary, will be borne by the Contractor. All expenses incurred by the City for emergency repairs will be deducted from the progress payments and the final payment due to the Contractor. Such remedial measures by the City will not relieve the Contractor from full responsibility for public safety. 3-13 COMPLETION AND ACCEPTANCE Subsection 3-13 of the Greenbook is deleted in its entirety and replaced by the following: The Work will be inspected by the Engineer for acceptance upon the Engineer receiving the Contractor's written assertion that the Work is complete. If, in the Engineer's judgment, the Work is complete and is ready for acceptance, the Engineer will accept the Work on behalf of the City in the manner prescribed by the City. The Engineer will recommend approval of the Notice of Completion to the City Council. This will be the date when the Contractor is relieved from responsibility to protect the Work. All work will be guaranteed by the Contractor against defective workmanship and materials furnished by the Contractor for a period of 1 year from the date the Work was completed. The Contractor will replace or repair any such defective work in a manner satisfactory to the Engineer, after notice to do so from the Engineer, and within the time specified in the notice. If the Contractor fails to make such replacement or repairs within the time specified in the notice, the City may perform this work and the Contractor's sureties will be liable for the cost thereof. 3-13.1 GENERAL GUARANTY The Contractor will remedy any defects in the work and pay for any damage to other work resulting therefrom, which will appear within a period of one year from the date of final acceptance of the work unless a longer period is specified. The owner will give notice of observed defects with reasonable promptness. II-B-12 Agreement No. 6574 4-0 `ONTROL OF MATERIALS 4-3 INSPECTION REM1 EMENTS Subsection 4-3, Inspection, is deleted in its entirety and replaced by the following subsections. 4-3.1 GENERAL Unless otherwise specified, inspection at the source of production for such materials and fabricated items as bituminous paving mixtures, structural concrete, fabricated metal products, cast metal products, welding, reinforced and unreinforced concrete pipe, application of protective coatings, and similar shop and plant operations is not required. A certificate of compliance, signed by an authorized officer of the producer, certifying compliance with the contract documents will be submitted for all of the following materials: steel pipe, sizes less than 18 inches; vitrified clay pipe; asbestos cement pipe; cast iron pipe; reinforced concrete pipe; non -reinforced concrete pipe; and PVC sewer and water pipe; subject to sampling and testing by City. Standard items of equipment, such as electric motors, conveyors, plumbing fittings and fixtures, lumber, plywood, and so on, are subject to inspection at the job site. All other equipment items will be inspected and tested in accordance with the contract documents. The City does not provide full time inspection. The Contractor will provide 24-hour minimum notice for each inspection required by the work unless other arrangements have been agreed upon, in writing, with the City Engineer. Any inspection required outside of normal working hours and days, including holidays, will be at the Contractor's cost at rates established by the City. 4-6 TRADE NAMES Subsection 4-6, Trade Naives, is deleted in its entirety and replaced by the following subsections. 4-6.1 TRADE NAMES OR E t�AI Whenever any material, product, equipment, or service is specified by brand, trade, or proprietary name, the item so specified will be deemed to be followed by the words "or equal". For the City's consideration of a proposed "equal" item, the Bidder must submit, a minimum of ten (10) calendar days b.cfo4a the date of the bid opening, documentation of the particulars of the proposed "equal item". At a minimum, the submitted II-B-13 Agreement No. 6574 documentation will include: • Written request with explanation of why the product should be considered as an equal product. • Material specifications. ■ Technical specifications. Test data. Samples. ■ Comparison chart of key specifications of the "equal" item against similar specifications of the specified item. Work locations and reference telephone numbers of at least three (3) locations where the proposed "equal" item has been recently installed under similar conditions. Warranty data. The Bidder will be notified by the Engineer whether or not the proposed "equal" product is acceptable to the City five (5) calendar days before the date of the bid opening. Failure to submit all required documentation and/or submittal of incomplete documents may result in the City's rejection of the proposed "equal" product without further consideration. 5-0 LEGAL RELATIONS AND RESPONSIBILITIES 5-3 LABOR The following subsections are added to Subsection 5-3 of the Greenbook. 5-3.2 PREVAILING WAGES The Contractor will post at appropriate conspicuous points at the site of the project a schedule showing determinations of the Director of Industrial Relations of the prevailing rate of per diem wages. It will be the Contractor's responsibility to obtain copies of the prevailing rate of per diem wages. One source that may be used is the California Department of Industrial Relations website which is currently located at www.dir.ca.gov, or by calling the Prevailing Wage Unit at (415) 703-4774. Attention is directed to Labor Code §§ 1777.5, 1777.6 and 3098 concerning the employment of apprentices by the Contractor or any subcontractor. Labor Code § 1777.5 requires the Contractor or subcontractor employing tradesmen in any apprenticeship occupation to apply to the joint apprenticeship committee nearest the site of the public works project and which administers the apprenticeship program in that trade for a certificate of approval. The certificate will also fix the ratio of apprentices to journeymen that will be used in the performance of the contract. The ratio of apprentices to journeymen in such cases will not be less than one to five except: II-B-14 Agreement No. 6574 a) When employment in the area of coverage by the joint apprenticeship committee has exceeded an average of 15 percent in the ninety (90) calendar days before the request for certificate, or b) When the number of apprentices in training in the area exceeds a ratio of one to five, or c) When the trade can show that it is replacing at least 1/30 of its membership through apprenticeship training on an annual basis state-wide or locally, or d) When the Contractor provides evidence that the Contractor employs registered apprentices on all of his contracts on an annual average of not less than one apprentice to eight journeymen. The Contractor is required to make contributions to funds established for the administration of apprenticeship programs if the Contractor employs registered apprentices or journeymen in any apprenticeable trade on such contracts and if other contractors on the public works site are making such contributions. The Contractor and any subcontractor will comply with Labor Code §§ 1777.5 and 1777.6 in the employment of apprentices. Information relative to apprenticeship standards, wage schedules and other requirements may be obtained from the Director of Industrial Relations, ex-officio the Administrator of Apprenticeship, San Francisco, California, or from the Division of Apprenticeship Standards and its branch offices. 5-3.3 RECORI.) Of-' WAGES PAID: fN IW'E 1"1(.)1 Every Contractor and subcontractor will keep an accurate certified payroll records showing the name, occupation, and the actual per diem wages paid to each worker employed in connection with the Work. The record will be kept open at all reasonable hours to the inspection of the body awarding the contract and to the Division of Labor Law Enforcement. If requested by the City, the Contractor will provide copies of the records at its cost. 5-4 LIABILITY INSURANCE Subsection 5-4, Liability Insurance, of the Greenbook is deleted in its entirety and replaced by the following subsections. II-B-15 Agreement No. 6574 5-4.1 GENERAL Contractor must procure and maintain for the duration of the contract the following insurance coverages and limits against claims for injuries to persons or damage to property that may arise from or in connection with the performance of the work covered by this agreement by the Contractor, its agents, representatives, employees or subcontractors: COVERAGE PER OCCURRENCE ISO FORM Comprehensive General Liability CL 00 02 01 85 or 88 Business Auto CA 00 01 01 87 Workers' Compensation COMBINED SINGLE LIMIT $2,000,000 $1,000,000 Statutory Contractor will provide endorsements or other proof of coverage for contractual liability. Combined single limit per occurrence will include coverage for bodily injury, personal injury, and property damage for each accident. If Commercial General Liability Insurance or other form with a general aggregate limit is used, the policy will be endorsed such that the general aggregate limit will apply separately to this contract and a copy of the endorsement provided to the City. Liability policies will contain, or be endorsed to contain the following provisions: GENERAL LIABILITY AND AUTOMOBILE LIABILITY: The City, its officers, officials, employees, agents, and volunteers will be covered as insureds as respects: liability arising out of activities performed by or on behalf of the Contractor; products and completed operations of the Contractor; premises owned, occupied or used by the Contractor; or automobiles owned, leased, hired or borrowed by the Contractor. The coverage will contain no special limitations on the scope or protection afforded to the City, its officers, officials, employees, agents, or volunteers. The Contractor's insurance coverage will be primary insurance as respects the City, its officers, officials, employees, agents, and volunteers. Any insurance or self-insurance maintained by the City, its officers, officials, employees, agents, and volunteers will be excess of the Contractor's insurance and will not contribute with it. The insurer will agree in writing to waive all rights of subrogation against the City, its officers, officials, employees and volunteers for losses arising from work performed by the Contractor for the City. Any failure to comply with reporting provisions of the policies will not affect coverage II-B-16 Agreement No. 6574 provided to the City, its officers, officials, employees, agents and volunteers. The Contractor's insurance will apply separately to each insured against whom claim is made or suit is brought, except with respect to the limits of the insurer's liability. WORKER'S COMPENSATION: The insurer will agree to waive all rights of subrogation against the City, its officers, officials, employees and volunteers for losses arising from work performed by the Contractor for the City. ALL COVERAGES: Each insurance policy required by this subsection will be endorsed to state that coverage will not be suspended, voided, cancelled by either party, reduced in coverage or in limits except after thirty (30) calendar days written notice by certified mail, return receipt requested, has been given to: CITY CLERK City of El Segundo 350 Main Street El Segundo, CA 90245 Notwithstanding the foregoing, the endorsement may state that insurance may be cancelled upon ten (10) calendar day notification for non-payment of premium. The Contractor will provide the City with updated proof of insurance should the Contract Time extend beyond the policy expiration date. All liability insurance will be on an occurrence basis. Insurance on a claims made basis will be rejected. Any deductibles or self -insured retentions will be declared to and approved by City. The insurer will provide an endorsement to City eliminating such deductibles or self -insured retentions as respects the City, its officials, employees, agents, and volunteers. Except for Workers Compensation Insurance, Contractor will furnish to City certificates of insurance and endorsements on forms acceptable to the City's City Attorney, duly authenticated, giving evidence of the insurance coverages required in this contract and other evidence of coverage or copies of policies as may be reasonably required by City from time to time. Endorsements must be supplied on ISO Form No. CG 20 10 11 85, or equivalent. Certificate/endorsement for Workers Compensation Insurance will be furnished on State Comp Fund or other industry standard form. Except for worker's compensation insurance, all insurance required herein will be placed with insurers with a Best's Rating of not less than A:VII. Worker's compensation insurance policies will meet the requirements of California law. All subcontractors employed on the work referred to in this contract will meet the insurance requirements set forth for Contractor. Contractor will furnish certificates of II-13-17 Agreement No. 6574 insurance and endorsements for each subcontractor at least five days before the subcontractor entering the job site, or Contractor will furnish City an endorsement including all subcontractors as insureds under its policies. Except as provided in Subsection 6-5, the Contractor will save, keep and hold harmless the City, its officers, officials, employees, agents and volunteers from all damages, costs or expenses in law or equity that may at any time arise or be claimed because of damages to property, or personal injury received by reason of or in the course of perforining work, which may be caused by any willful or negligent act or omission by the Contractor or any of the Contractor's employees, or any subcontractor. The City will not be liable for any accident, loss or damage to the work before its completion and acceptance, except as provided in Subsection 6-5. The cost of such insurance will be included in the various items of work in the Contractor's bid and no additional compensation for purchasing insurance or additional coverage needed to meet these requirements will be allowed. In the event that any required insurance is reduced in coverage, cancelled for any reason, voided or suspended, Contractor agrees that City may arrange for insurance coverage as specified, and Contractor further agrees that administrative and premium costs may be deducted from payments due to the Contractor. Contractor will not be allowed to work until alternate coverage is arranged. Coverage will not extend to any indemnity coverage for the active negligence of the additional insured if the agreement to indemnify the additional insured would be invalid under Civil Code § 2782(b). 5-4.2 INDEMNIFICATION AND DEFENSE In addition to the provisions of Subsection 5-4 of the Greenbook as between the City and Contractor, Contractor will take and assume all responsibility for the work as stated herein or shown on the plans. The Contractor will bear all losses and damages directly or indirectly resulting to it, to the City, its officers, employees, and agents, or to others on account of the performance or character of the work, unforeseen difficulties, accidents, traffic control, job site maintenance, or any other causes whatsoever. The Contractor will assume the defense of and indemnify and save harmless the City of El Segundo, its officers, employees, and agents, from and against any and all claims, losses, damage, expenses and liability of every kind, nature, and description, directly or indirectly arising from the perfonnance of the contract or work, regardless of responsibility for negligence, and from any and all claims, losses, damage, expenses, and liability, howsoever the same may be caused, resulting directly, or indirectly from the nature of the work covered by the contract, regardless of responsibility for negligence, to the fullest extent permitted by law. In accordance with Civil Code § II-B-18 Agreement No. 6574 2782, nothing in this Subsection 5-4.2 or in Subsection 5-4 of the Standard Specifications will require defense or indemnification for death, bodily injury, injury to property, or any other loss, damage or expense arising from the sole negligence or willful misconduct of the City, or its agents, servants or independent contractors who are directly responsible to the City, or for defects in design furnished by such persons. Moreover, nothing in this Subsection 5-4.2 or in Subsection 5-4 will apply to impose on the Contractor, or to relieve the City from, liability for active negligence of the City. The City does not, and will not, waive any rights against the Contractor which it may have by reason of the aforesaid hold harmless agreements because of the acceptance by the City, or deposit with City by Contractor, of any insurance policies described in Subsection 5-4 of the Special Provisions. This hold harmless agreement by the Contractor will apply to all damages and claims for damages of every kind suffered, or alleged to have been suffered by reasons of any of the aforesaid operations of Contractor, or any subcontractor, regardless of whether or not such insurance policies are determined to be applicable to any of such damages or claims for damages. No act by the City, or its representatives in processing or accepting any plans, in releasing any bond, in inspecting or accepting any work, or of any other nature, will in any respect relieve the Contractor or anyone else from any legal responsibility, obligation or liability he might otherwise have. 5-7.4.1 HAZARDOUS MATERIAL The following Subsection will be added to Section 5 of the Greenbook: For any excavation, which extends more than four feet below existing grade, the Contractor will promptly, and before the conditions are disturbed, notify the Engineer, in writing, of 1) any material that the Contractor believes may be hazardous waste, as defined in Health and Safety Code § 25117, which is required to be removed to a Class I, Class II, or Class III disposal site in accordance with provisions of existing law, 2) subsurface or latent physical conditions at the site differing from those indicated, or 3) unknown physical conditions at the site of any unusual nature, different materially from those ordinarily encountered and generally recognized as inherent in work of the character provided for in the Contract Documents. After receiving notice from the Contractor, the Engineer will promptly investigate any condition identified by the Contractor as being hazardous. The rights and obligations of the City and the Contractor with regard to such conditions (including, without limitation, the procedures for procuring change orders and filing claims) will be specified by the provisions of Subsection 2-9 (Changed Conditions) of the Greenbook. If a dispute arises between the City and the Contractor whether the conditions materially differ, involve hazardous waste, or cause a change in the Contractor's cost or time required for performance of the work, the Contractor will not be excused from any scheduled completion date provided for by the contract, but will proceed with all II-B-19 Agreement No. 6574 work to be performed under the contract. The Contractor will retain all rights provided by Subsection 2-10, Disputed Work, of the Greenbook. If the Engineer detennines that material called to the Engineer's attention by the Contractor is hazardous waste, or if the Engineer otherwise discovers the existence of hazardous waste, the Contractor will be responsible for removal and disposal of the hazardous waste by qualified personnel and appropriate equipment in the manner required by law as directed by the Engineer, subject to the provisions of Section 2 (Scope of Work) of the Greenbook. 6-0 PROSECUTION AND PROGRESS OF THE WORK 6-1 CONSTRUCTION SCHEDULE ANDCOMMENCEMENTOF WORK Section 6-1, Construction Schedule and Commencement of Work, is deleted in its entirety and replaced by the following subsections. Pm-ConstructloITp Nl'm etiM After contract award, the City will arrange for a pre -construction meeting to discuss the construction of the project. City will invite utility agencies and the contractor will arrange for all of its sub -contractors to attend the meeting. 6-1.1 CONTRACT SCHEDULE After notification of award and before starting any work, the Contractor will submit a Contract Schedule to the Engineer for review, as required by these Specifications within fifteen (15) calendar days of award. 6-1.2 CONTENT OF CONTRACT SCHEDULE The Contract Schedule, and any updated Contract Schedule, will meet the following requirements: 1. Schedules must be suitable for monitoring progress of the Work. 2, Schedules must provide necessary data about the time for the Engineer's decisions. 3. Schedules must be sufficiently detailed to demonstrate adequate planning for the Work. 4. Schedules must represent a practical plan to complete the Work within the Contract Time. 5. Schedules must show the critical path method for completing the Work. The Engineer's review of the form and general content of the Contract Schedule and any updated Contract Schedules is only for the purpose of determining if the listed requirements are satisfied, nothing more. II-B-20 Agreement No. 6574 6-1.3 EFFECT OF CONTRACT SCHEDULE The Contract Schedule, and any updated Contract Schedules, will represent a practical plan to complete the Work within the Contract Time. Extension of any schedule beyond the Contract Time will not be acceptable. Schedules showing the Work completed in less than the Contract may be acceptable if judged by the Engineer to be practical. Acceptance of such a schedule by the Engineer will not change the Contract Time. The Contract Time, not the Contract Schedule, will control in determining liquidated damages payable by the Contractor and in deleinuning any delay. If a schedule showing the Work completed in less than the Contract Time is accepted, the Contractor will not be entitled to extensions of the Contract Time for Excusable Delays or Compensable Delays or to adjustments of the Contract Sum for Compensable Delays until such delays extend the completion of the Work beyond the expiration of the Contract Time. The Contractor will plan, develop, supervise, control, and coordinate the performance of the Work so that its progress and the sequence and timing of Work activities conform to the current accepted Contract Schedule. The Contractor will continuously obtain from Subcontractors information and data about the planning for and progress of the Work and the delivery of equipment, will coordinate and integrate such information and data into updated Contract Schedules, and will monitor the progress of the Work and the delivery of equipment. The Contractor will act as the expeditor of potential and actual delays, interruptions, hindrances, or disruptions for its own forces and those forces of Subcontractors. The Contractor will cooperate with the Engineer in developing the Contract Schedule and updated Contract Schedules. The Engineer's review and comments about any schedule or scheduling data will not relieve the Contractor from its sole responsibility to plan for, perform, and complete the Work within the Contract Time. Review and comments about any schedule will not transfer responsibility for any schedule to the Engineer or the City nor imply their agreement with (1) any assumption upon which such schedule is based or (2) any matter underlying or contained in such schedule. The Engineer's failure to discover errors or omissions in schedules that have been reviewed, or to inform the Contractor that the Contractor, Subcontractors, or others are behind schedule, or to direct or enforce procedures for complying with the Contract Schedule will not relieve the Contractor from its sole responsibility to perform and complete the Work within the Contract Time and will not be a cause for an adjustment of the Contract Time or the Contract Sum. The Contractor will perform the Work in accordance with the currently accepted Contract Schedule. II-B-21 Agreement No. 6574 6-1.4 COMMENCEMENT OFCONTRACTTIME The Contract Time will commence when the City issues a Notice to Proceed. The Work will start on the date specified in the Notice to Proceed and within a maximum of fifteen (15) calendar days after the date of the Notice to Proceed, and be diligently prosecuted to completion with the time provided in the Specifications. 6-3.3 WORK DAYS_ AND WORKING ,HOURS City Hall is open from Monday thru Thursday lam -5pm and Friday's 7am-4pm. It is closed the following holidays: New Year's Day Martin Luther King, Jr. Day President's Day Memorial Day Independence Day Labor Day Veteran's Day Thanksgiving Christmas Eve Christmas New Year's Eve New Year's Day Working on Fridays when City Hall is closed is acceptable. If the Contractor, however, requests an inspection a day when City Hall is closed, then the Contractor will have to reimburse the City for the costs of inspection. The Contractor must request such an inspection at least 48 hours in advance. City inspections during hours when City Hall is closed are subject to inspection overtime fees to be paid for by the Contractor. Friday work that does not require inspection can be done without an inspection fee and must be discussed with City staff before its occurrence. If the Contractor does construction on a Friday or a day when City Hall is closed, that day is counted as a project working day. On workdays, Contractor's activities will be confined to the hours between 7:00 a.m. and 4:00 p.m. Please see Section 6-7.5 below for weekend and holiday work restrictions. 6-3.4 NIGHT WORK The following paragraph is added to Section 6-7 of the Greenbook: The City will not permit Work between the hours of 4 p.m. and 7 a.m. of the following day unless specifically provided for in the bid documents or unless the Contractor receives prior written approval. II-B-22 Agreement No. 6574 6-3.5 WEEKEND AND 11OLIDAYmmWORK The Engineer may, but is not required to, allow the Contractor to work on Saturdays, Sundays and City Holidays. 6-4 DELAYS AND EXTENSIONS 01 .I 1M1 Subsection 6-4 is deleted in its entirety and replaced with the following subsections. 6-4.1 GENERAL If delays are caused by unforeseen events beyond the control of the Contractor, such delays will entitle the Contractor to an extension of time as provided herein, but the Contractor will not be entitled to damages or additional payment due to such delays except as otherwise provided herein. Excusable delay may include: war, earthquakes exceeding 3.5 on the Richter Scale, government regulation, labor disputes outside the contemplation of the parties, strikes outside the contemplation of the parties, fires, floods, changes to the Work as identified herein, or other specific events that may be further described in the Specifications. Delays to the project caused by labor disputes or strikes involving trades not directly related to the project, or involving trades not affecting the project as a whole will not warrant an extension of time. The City will not grant an extension of time for a delay by the Contractor's inability to obtain materials unless the Contractor furnishes to the Engineer documentary proof. The proof must be provided in a timely manner in accordance with the sequence of the Contractor's operations and accepted construction schedule. Should delays be caused by events other than those included herein, the Engineer may, but is not required to, deem an extension of time to be in the City's best interests. 6-4.2 EXTENSIONS OF TIME If granted, extensions of time will be based upon the effect of delays to the critical path of the Work as determined by the current accepted Contract Schedule. Delays to minor portions of the Work that do not affect the critical path will not be eligible for extensions of time. 6-4.3 PAYMENT FOR DELAYS TO CONTRACTOR Any payment for compensable delay will be based upon actual costs as set forth in Subsection 402-5.1 excluding, without limitation, what damages, if any, the Contractor may have reasonably avoided. The Contractor understands that this is the sole basis for recovering delay damages and explicitly waives any right to calculate daily damages II-B-23 Agreement No. 6574 for office overhead, profit, or other purported loss, using different formulas including, without limitation, the Eichleay Formula. 6-4.4 WRITTEN NOTICE AND REPORT If the Contractor desires payment for a delay or an extension of time, it will give the Engineer written notice of such request not later than the time limit set forth in the Proposal for submitting a claim after the event or occurrence giving rise to a delay claim. Failure to submit a written request within such amount of time will result in the Contractor waiving its delay claim. Any claim for payment or an extension of time must be in the form required by the "Claims" sections of these Specifications. In no event will the City grant the Contractor an extension of time if the delay is within the Contract Time as identified by the Contract Documents. 6-7 DEFAULT BY CONTRACTOR The language in subsection 6-7 is deleted in its entirety and replaced with the following subsections. 6-7.1 GENERAL Should the Contractor fail to begin delivery of material and equipment, to commence the Work within the time specified, to maintain the rate of delivery of material, to execute the Work in the manner and at such locations as specified, or fail to maintain the Work schedule (as determined by the current accepted Contract Schedule) which will ensure the City's interest, or if the Contractor is not carrying out the intent of the Contract, the City may serve written notice upon the Contractor and the Surety on its Faithful Performance Bond demanding satisfactory compliance with the Contract. 6-7.2 TERMINATIONOFCONTRACTOR'S CONTROL OVER THE WORK The City may tenninate the Contractor's control over the Work without liability for damages when, in the City's opinion, the Contractor is not complying in good faith, has become insolvent, or has assigned or subcontracted any part of the Work without the City's consent. Should such termination occur, the Contractor will be paid the actual amount due based on Contract Unit Prices or lump sums bid and the quantity and quality of the Work completed at the time of termination, less damages caused to the City by the Contractor's action or inaction. In the event of such termination of control, the City may do any one, or combination of, the following: Serve written notice upon the Surety on its Faithful Performance Bond II-B-24 Agreement No. 6574 demanding satisfactory compliance with the Contract. In such event the Surety will, within 5 days, assume control and perform the Work as successor to the Contractor; The City may perform the Work itself and deduct the cost thereof from any payment due to the Contractor; The City may replace the Contractor with a different contractor to complete the work and deduct the cost thereof from any payment due to the Contractor. Nothing herein will waive, or serve as a limitation upon, any additional remedy the City may have under these Contract Documents or applicable law. 6-7.3 SURETY'S ASSUMPTION OF CONTROL Should the Surety assume any part of the Work, it will take the Contractor's place in all respects for that part, and will be paid by the City for all work performed by it in accordance with the Contract. If the Surety assumes the entire Contract, all money due the Contractor at the time of its default will be payable to the Surety as the Work progresses, subject to the terms of the Contract. If the Surety does not assume control and perform the Work within 5 days after receiving notice of cancellation, or fails to continue to comply, the City may exclude the Surety from the premises. The City may then take possession of all material and equipment and complete the Work by City's forces, by letting the unfinished work to another contractor, or by a combination of such methods. In any event, the cost of completing the Work will be charged against the Contractor and its Surety and may be deducted from any money due or becoming due from the City. If the sums due under the Contract are insufficient for completion, the Contractor or Surety will pay to the City within 5 days of completion, all costs in excess of the sums due. The provisions of this subsection will be in addition to all other rights and remedies available to the City under applicable law. 6-9 LIQUIDATED DAMAGES Subsection 6-9, Liquidated Damages, of the Greenbook is deleted in its entirety and replaced by the following subsections. 6-9.1 FAILURE TO COMPLETE WORK ON TIME If all the work called for under the contract is not completed before or upon the expiration of the Contract Time, the City will sustain damage. Since it is and will be impracticable to determine the actual damage which the City will sustain in the event of and by reason of such delay, it is therefore agreed that the Contractor will pay to the City the sum specified in the Proposal for each and every calendar day beyond the time prescribed to complete the work not as a penalty, but as a predetermined liquidated damage. The Contractor agrees to pay such liquidated damages as are herein provided, II-B-25 Agreement No. 6574 and in case the same are not paid, agrees that the City may deduct the amount thereof from any money due or that may become due to the Contractor under the contract. Unless otherwise specified, liquidated damages will be $250 per calendar day.: 6-11 DISPUTES AND CLAIMS• PROCEDURE 6-11.1 GENERAL Consistent with PCC § 10240.6, "Claim" means a written demand or assertion by the Contractor that seeks an adjustment or interpretation of the terms of the Contract Documents, payment of money, extension of time, or other relief with respect to the Contract Documents, including a determination of disputes or matters in question between the City and the Contractor arising out of or related to the Contract Documents or the performance of the Work, and claims alleging an unforeseen condition or an act, error, or omission by the City, the Engineer, their agents or employees. "Claim" does not mean, and the Claims procedures herein do not apply, to the following: I.. Claims respecting penalties for forfeitures prescribed by statute or regulations, which a government agency is specifically authorized to administer, settle, or determine. 2. Claims respecting personal injury, death, reimbursement, or other compensation arising out of or resulting from liability for personal injury or death. 3. Claims respecting a latent defect, breach of warranty, or guarantee to repair. 4, Claims respecting stop notices. If a Claim is subject to the Change Order procedures, the Claim arises upon the issuance of a written final decision denying in whole or in part the Contractor's Change Order Request. If a Claim is not subject to the Change Order Procedures, the Claim arises when the Contractor discovers, or reasonably should discover, the condition or event giving rise to the Claim. 6-11.2 FORM A Claim must include the following: A statement that it is a Claim and a request for a decision. 2. A detailed description of the act, error, omission, unforeseen condition, event or other condition giving rise to the Claim. If the Claim is subject to the Change Order procedures, a statement demonstrating that a Change Order Request was timely submitted and denied. 4. A detailed justification for any remedy or relief sought by the Claim, including II-B-26 Agreement No. 6574 to the extent applicable, the following: a) If the Claim involves extra work, a detailed cost breakdown claimed. The breakdown must be provided even if the costs claimed have not been incurred when the Claim is submitted. b) To the extent costs have been incurred when the Claim is submitted, the Claim must include actual cost records (including, without limitation, payroll records, material and rental invoices) demonstrating that costs claimed have actually been incurred. c) To the extent costs have not yet been incurred at the time the Claim is submitted, actual cost records must be submitted on a current basis not less than once a week during any periods costs are incurred. A cost record will be considered current if submitted within seven (7) calendar days of the date the cost reflected in the record is incurred. At the Engineer's request, claimed extra costs may be subject to further verification procedures (such as having an inspector verify the performance of alleged extra work on a daily basis). 5. If the Claim involves an error or omission in the Contract Documents: a) An affirmative representation that the error or omission was not discovered before submitting a bid for the Contract; and b) A detailed statement demonstrating that the error or omission reasonably should not have been discovered by the Contractor, its Subcontractors and suppliers, before submitting a bid for the Contract. 6.. If the Claim involves an extension of the Contract Time, written documentation demonstrating the Contractor's entitlement to a time extension. 7. If the Claim involves an adjustment of the Contract Sum for delay, written documentation demonstrating the Contractor's entitlement to such an adjustment. 8. A personal certification from the Contractor that reads as follows: 611 _. BEING THE --... ....................---- ...._� (MUST BE AN OFFICER) OF ............ w.... (CONTRACTOR NAME), DECLARE UNDER PENALTY OF PERJURY UNDER CALIFORNIA LAW, AND DO PERSONALLY CERTIFY AND ATTEST THAT I HAVE THOROUGHLY REVIEWED THE ATTACHED CLAIM FOR ADDITIONAL COMPENSATION OR EXTENSION OF TIME, AND KNOW ITS CONTENTS, AND SAID CLAIM IS MADE IN GOOD FAITH; THE SUPPORTING DATA 1S TRUTHFUL AND ACCURATE; THAT THE II-B-27 Agreement No. 6574 AMOUNT REQUESTED ACCURATELY REFLECTS THE CONTRACT ADJUSTMENT FOR WHICH THE CONTRACTOR BELIEVES CITY IS LIABLE; AND, FURTHER, THAT I AM FAMILIAR WITH CALIFORNIA PENAL CODE § 72 AND CALIFORNIA GOVERNMENT CODE § 12650, ET SEQ., PERTAINING TO FALSE CLAIMS, AND FURTHER KNOW AND UNDERSTAND THAT SUBMITTING OR CERTIFYING A FALSE CLAIM MAY LEAD TO FINES, IMPRISONMENT, AND OTHER SEVERE LEGAL CONSEQUENCES." 6-11.3 CLAIMS SUBMITTED TO ENGINEER Within thirty (30) calendar days after the circumstances giving rise to a Claim occur, the Contractor will submit its Claim to the Engineer for a decision. Regardless of any Claim submittal, or any dispute regarding a Claim, unless otherwise directed by the Engineer, the Contractor will not cause any delay, cessation, or tennination of the Work, but will diligently proceed with the performing the Work in accordance with the Contract Documents. Except as otherwise provided, the City will continue to make payments in accordance with the Contract Documents. 6-11.4 CLAIM I PREREQUISITE TO OTHER REMEDY The Contractor certifies that it is familiar with PCC § 10240.2 and understands and agrees that submitting a Claim in accordance with these Specifications is an express condition precedent to the Contractor's right to otherwise pursue a claim whether through alternative dispute resolution or by litigation. Should the Contractor fail to submit a claim in accordance with these Specifications, including the time limits set forth herein, it will waive any right to a remedy, whether in law or equity, it might otherwise have pursuant to the Contract Documents or applicable law. 6-11.5 DECISION ON CLAIMS The Engineer will promptly review Claims submitted by the Contractor in accordance with these Specifications. Should the Engineer require additional supporting evidence to evaluate the claim, the Engineer will request such additional information in writing. Any such requested data will be furnished not later than ten (10) calendar days after the Contractor receives the Engineer's request. The Engineer will render a decision not later than thirty (30) days after either receiving the Claim or the deadline for furnishing additional supporting data, whichever is later. If the Claim amount is more than $50,000, the time period will be extended to sixty (60) days. If the Engineer fails to render a decision within the time period established herein, then the Claim will be deemed denied. The Engineer's decision will be final and binding unless appealed in accordance with these Specifications. The Engineer's decision on a Claim will include a statement substantially as follows; II-B-28 Agreement No. 6574 "This is a decision pursuant to the General Specifications of your contract. If you are dissatisfied with the decision, and have complied with the procedural requirements for asserting claims, you may have the right to alternative dispute resolution or litigation. Should you fail to take appropriate action within thirty (30) calendar days of the date of this decision, the decision will become final and binding and not subject to further appeal." 6-11.6 APPEAL OF ENGINEER'S DECISION Should the Contractor dispute the Engineer's decision, then the Contractor must appeal that decision to the City's Public Works Director within thirty (30) calendar days of receiving the Engineer's decision. The Public Works Director will address disputes or claims within thirty (30) calendar days after receiving such request and all necessary supporting data. The Public Works Director's decision on the dispute or claim will be the City's final decision. If the Contractor disputes the Public Works Director's decision, then the Contractor must demand alternative dispute resolution in accordance with this Section and the PCC within thirty (30) calendar days of the City's final decision. 6-11.7 MEDIATION If the City and the Contractor agree, disputes between the parties may be submitted to non -binding mediation. If the parties cannot agree to an alternative form of mediation, then mediation will be administcrcd by the American Arbitration Association ("AAA") under its Construction Industry Mediation Rules, unless the use of such rules are waived by mutual stipulation of both parties. The parties may, but are not required to be, represented by counsel in mediation. The requirement for mediation will not alter or modify the time limitations otherwise provided for claims and no conduct or settlement negotiation during mediation will be considered a waiver of the City's right to assert that claim procedures were not followed. 6-11.8 ARBITRATION If the City and Contractor do not agree to mediation, then a disputes will be submitted to neutral non -binding (except as provided herein) arbitration. Arbitration will be conducted in accordance with PCC § 10240.3. Any decision rendered by an arbitrator will be consistent with PCC § 10240.8. The exclusive venue for any arbitration will be in Los Angeles County. The expenses and fees of the arbitrators and the administrative fees, if any, will be II-B-29 Agreement No. 6574 divided among the parties equally. Each party will pay its own counsel fees, witness fees, and other expenses incurred for its own benefit. 6-11.9 WHEN ARBITR TION DECISION BECOMES BINDING The decision rendered by the arbitrator will become binding upon the parties unless appealed to the Los Angeles County Superior Court pursuant to PCC § 10240.12 within thirty (30) calendar days of the decision. If subsequent litigation results in an award to the party appealing the arbitration that is less than or equal to that of the arbitration decision, or if the litigation results in a decision in favor of the nonappealing party, then the party appealing the arbitration will pay the nonappealing party's attorney's fees and court costs. 6-11.10 APPEAL TO SUPERIO R COURT: WAIVER OF JURY TRIAL Should a party timely object to the arbitration decision, it may file a petition with the Los Angeles County Superior Court in accordance with California Code of Civil Procedure ("CCP") §§ 1285, et seq. Notwithstanding the limitations set forth in CCP § 1286.2, the court may vacate, correct, or adjust an arbitration award, and enter judgment in accordance with CCP § 1287.4, for any legal or equitable basis including, without limitation, error of law. The court will apply the substantial evidence standard of review when considering the appeal of an objecting party. BY EXECUTING THESE CONTRACT DOCUMENTS, THE CONTRACTOR AGREES TO HAVE DISPUTES OR CONTROVERSY CONCERNING THE CONSTRUCTION, INTERPRETATION, PERFORMANCE, OR BREACH OF THESE CONTRACT DOCUMENTS, INCLUDING CLAIMS FOR BREACH OF CONTRACT OR ISSUES OF BAD FAITH DECIDED IN ACCORDANCE WITH THIS SECTION 6-11. BOTH THE CITY AND THE CONTRACTOR WAIVE THEIR RIGHT TO A JURY TRIAL FOR THESE DISPUTES OR ISSUES. 6-11.11 AB 626 CLAIMS-, PROCESS Claims made by a Contractor for one or more of the following are subject to the claim resolution process set forth in Public Contract Code section 9204: (A) A time extension, including, without limitation, for relief from damages or penalties for delay assessed by the city under a contract for a public works project. (B) Payment by the city of money or damages arising from work done by, or on behalf of, the contractor pursuant to the contract for a public works project and payment for which is not otherwise expressly provided or to which the claimant is not otherwise entitled. (C) Payment of an amount that is disputed by the city. II-B-30 Agreement No. 6574 7-0 MEASt)REMf NT AND PAYMENT 7-2 LUMP SUM WORK Subsection 7-2, Lump Sum Work, of the Greenbook is deleted in its entirety and replaced by the following: Items for which quantities are indicated as "Lump Sum," "L.S.," or "Job" will be paid for at the price indicated in the Proposal. Such payment will be full compensation for all costs for labor, equipment, materials and plant necessary to furnish, construct and install the lump sum item of work, complete, in place, and for all necessary appurtenant work, including, but not limited to, all necessary cutting, patching, repair and modification of existing facilities, and clean up of site. Contractor will furnish three copies of a detailed schedule, which breaks down the lump sum work into its component parts and cost for each part, in a form and sufficiently detailed as to satisfy Engineer that it correctly represents a reasonable apportionment of the lump sum. This schedule is subject to approval by Engineer as to both the components into which the lump sum item is broken down, and the proportion of cost attributable to each component. This schedule will be the basis for progress payments for the lump sum work 7-3.2 PARTIAL AND FINAL PAYMENTS The text of Subsection 7-3.2 of the Standard Specifications is deleted and replaced with the following: The closure date for the purpose of making partial progress payments will be the last working day of each month. The Contractor will prepare the partial payment invoice with measurement of the work performed through the closure date and submit it to the CITY for approval. When work is complete, the Contractor will determine the final quantities of the work performed and prepare the final progress payment, and submit it to the Engineer for approval. It will take a minimum of thirty-five (35) calendar days from the date of approving the Contractor's invoice to make the payment to the Contractor. However, payments will be withheld pending receipt of any outstanding reports required by the contract documents, or legal release of filed Stop Payment Notices against the Contractor. In addition, the final progress payment will not be released until the Contractor returns the control set of Plans and Specifications showing the as -built conditions. The full five percent (5%) retention will be deducted from all progress payments. The Contractor will make a payment request for the retained amount, for approval by the II-B-31 Agreement No. 6574 City, upon field acceptance of the work by the City Engineer. The City Engineer upon field acceptance and receipt of the final as -built plans and any other reports or documents required to be provided by the Contractor will process a recommendation to the City Council for acceptance of the work. Not less than thirty-five (35) calendar days from the City Council acceptance of the work, the Contractor's final payment will be made provided Stop Payment Notices or other claims have not been filed against the Contractor and/or the City by material suppliers, sub -contractors, other governmental agencies, and private property owners. Until these Stop Payment Notices are released and claims are resolved the stop payment/claim amount will be withheld from the final payment. The Contractor, however, may receive interest on the retention for the length of construction, or receive the retention itself as long as the retention is substituted with escrow holder surety or equal value. At the request and expense of the Contractor, surety equivalent to the retention may be deposited with the State Treasurer, or a State or Federally chartered bank, as the escrow agent, who will pay such surety to the Contractor upon satisfactory completion of the contract. Pursuant to PCC § 22300, the Contractor may substitute securities for retention monies held by the City or request that the City place such monies into an escrow account. The Contractor is notified, pursuant to PCC § 22300, that any such election will be at the Contractor's own expense and will include costs incurred by the City to accommodate the Contractor's request. Progress payment paid by the City as contemplated herein, will be contingent upon the Contractor submitting, in addition to any additional documents, an updated Contract Schedule in the form prescribed by these Contract Documents. Failure of the Contractor to submit an acceptable updated Contract Schedule will result in the City withholding partial payment, without liability to the City, until such an acceptable updated Contract Schedule is submitted. Nothing herein will allow the Contractor to suspend or slow progress of the Work. A City Council resolution established a Project Payment Account, encumbered money in the current budget, and assigned that money to the Project Payment Account which is the sole source of funds available for payment of the Contract Sum. Contractor understands and agrees that Contractor will be paid only from this special fund and if for any reason this fund is not sufficient to pay Contractor, Contractor will not be entitled to payment. The availability of money in this fund, and City's ability to draw from this fund, are conditions precedent to City's obligation to make payments to Contractor. 7-3.3 DELIVERED MATERIALS Materials and equipment delivered or stored, but not incorporated into the work, will II-B-32 Agreement No. 6574 not be approved for progress payments. 7-4.2.3 BASISFORESTABLISHING COSTS Subsection 7-4.2.3, Tool and Equipment Rental is modified where the second and third paragraphs are replaced with "Regardless of ownership, the rates to be used in determining the equipment usage costs will not exceed those listed for the same or similar equipment in the California State Department of Transportation publication of Labor Surcharge and Equipment Rates effective for the period of usage." 7-4.3 MARK UP Subsection 7-4.3, Mark Up, is deleted in its entirety and replaced by the following subsection: (a) Work by Contractor. The following percentages will be added to the Contractor's costs and will constitute the markup for all overhead and profits. 1) Labor..................................................20 2) Materials ............... :......................... —15 3) Equipment Rental...............................15 4) Other Items and Expenditures.... ........ 15 To the sum of the costs and markups provided for in this subsection, 1 percent will be added as compensation for bonding. No other formula, e.g., the Eichleay or other method, may be used to calculate daily damages for office overhead, profit, or other purported loss. (b) Work by Subcontractors. When all or any part of the extra work is performed by a Subcontractor, the markup established in 7-4.3(a) will be applied to the Subcontractor's actual cost of such work. A markup of 10 percent on the first $5,000 of the subcontracted portion of the extra work and a markup of 5 percent on work added in excess of $5,000 of the subcontracted portion of the extra work may be added by the Contractor. (c) In the event that City becomes liable to Contractor for compensable delays, City agrees to pay Contractor the daily Contractor Delay Damages set forth in the Bid Form or Contractor's actual daily delay damages, whichever is less, for each day of Compensable Delay as provided for by these Contract Documents. 7-4.4 DAILY Y REPORTS BY-CONTRACTR Add the following paragraph to subsection 7-4.4, Daily Reports by Contractor: If disagreement continues regarding extra work, the Contractor may seek compensation in accordance with the Claims procedure. Daily Reports required by this subsection must be made part of the Claim as supporting data for the Claim. II-B-33 Agreement No. 6574 100-1 TERMINATION OF AGENCY LIABILITY Before receiving final payment, the Contractor will execute a "Release on Contract" form which will operate as, and will be a release to the City, the City Council, and each member of the City Council and their agencies, from all claims and liability to the Contractor for anything done or furnished for, or relating to, the work or for any act of neglect of the City of any person relating to or affecting the work, except the claim against the City for the remainder, if any there be, of the amounts kept or retained as provided in Subsections 9-3 of the Standard Specifications and except for any unsettled claims listed on said form which have been filed in compliance with the requirements for making claims. 402-0 UTILITIES 402-2 PROTECTION The following subsection is added to Subsection 402-2 of the Greenbook. 402-2.1 INCORRECT LOCATION OF UTILITIES If the Contractor, while performing the Work, discovers utility facilities not identified correctly or not shown in the contract plans or specifications by the City, the Contractor will immediately notify the City and utility owner in writing. 402-4 RELOCATION The following subsection is added to Subsection 402-4 of the Greenbook. 402-4.1 RESPONSIBILITY OF UTILITY REMOVAL OR RELOCATION The City will be responsible to arrange for the removal, repair, or relocation of existing utilities located within the project limits if such utilities are not correctly identified in the contract plans or specifications by the City. The City will have the sole discretion to perfoml repairs or relocation work or permit the Contractor to do such repairs or relocation. 402-5 DELAYS The following paragraphs are added to Subsection 402-5 of the Greenbook. Actual loss, as used in this Subsection, will be understood to include no items of expense other than idle time of equipment and necessary payments for idle time of workers, cost of extra moving of equipment, and cost of longer hauls. Compensation for idle time of equipment and idle time of workers will be determined by Subsection 402-5.1 and no markup will be added in either case for overhead and profit. The cost II-B-34 Agreement No. 6574 of extra moving of equipment and the cost of longer hauls will be paid for as extra work. The following subsection is added to Subsection 402-5 of the Greenbook. 402-5.1 CALCULATING IDLE TIME Equipment idle time will calculated in accordance with Subsection 7-4.2.3 and based upon the actual normal working time during which the delay condition exists, but in no case will exceed 8 hours in any one day. The days for which compensation will be paid will be the calendar days, excluding Saturdays, Sundays and legal holidays, during the existence of the delay. Worker idle time will be calculated in accordance with Subsection 7-4.2.3. - END OF SECTION - II-B-35 Agreement No. 6574 Agreement No. 6574 SECTION HI — SPECIAL PROVISIONS 1-0. GE ERALS."OPI� .` 1T1ITNJE FOR COMPLETION. AND �LOCATION OF WORK 1-1. General Sco e.,o[NAlorL The work to be done consists of furnishing all supervision, materials, labor, equipment, tools and incidentals for pavement rehabilitation, sidewalk and curb ramp construction and reconstruction, traffic signal modifications, signing and striping, landscaping and irrigation and drainage modifications on El Segundo Boulevard, Continental Boulevard, Nash Street, and Douglas Street as required in the specifications and contract documents for the following project: "El Segundo Boulevard Improvement Project". l -2. Location of the Work: The project will occur in the City of El Segundo on El Segundo Boulevard, from Illinois Street to Isis Street; on Continental Boulevard, from El Segundo Boulevard to Grand Avenue; on Nash Street, from El Segundo Boulevard to Imperial Highway, and on Douglas Street, from Rosecrans Avenue to Imperial Highway. 1-3. WorkinL, Days and -rinse fci�r Com„laletion: Contractor shall commence administrative and procurement work on the date specific in the Administrative Notice to Proceed to be issued to the Contractor by City of E1 Segundo Public Works Department. Administrative and procurement work shall include lead-times and shall be completed within one hundred twenty (120) working days after the date specified in the Administrative Notice to Proceed. At the end of the administration and procurement work period, the City will issue a Construction Notice to Proceed for the construction phase to begin. Contractor shall complete the construction work in eighty (80) working days, including mobilization and demobilization. The 90-day landscape maintenance and establishment period shall commence after demobilization. During the landscape maintenance and establishment period, The Contractor shall only mobilize as necessary for landscape maintenance and establishment activities. 2-0. NOTIFICATIONS The CONTRACTOR will notify all agencies listed here a minimum of forty-eight (48) hours before start of operation. The following list of names and telephone numbers are intended for the convenience of the CONTRACTOR and the City does not guarantee either the completeness or correctness of this list. ........ .._____...._..m_- ...._ ... ...._ OPERATION OFFICE TELEPHONE Start of work Cheryl Ebert Public Works Project Mgr 310 -524-2321 shutdown of Lifan Xu, City Engineer 310-524-2368 work, or Elias Sassoon, Director of Public Works 310-524-2356 resumption of Beto Moreno, Streets Supervisor 310-877-0091 work after shutdown III-A-1 Agreement No. 6574 Information is provided in Appendix A for CONTRACTOR'S use to notify agencies if their facilities are affected by CONTRACTOR'S work. 2-1. Notification of Residents and Businesses The City will require the Contractor to distribute one (1) "Public Notice" to each resident and business affected by the construction within a 0.5 mile radius of project limits. An additional notice must be provided to residents and businesses of specific impacts to frontage sidewalks, frontage sidewalks, driveways, etc. Notices must be approved by the City prior to distribution. Notices shall be distributed minimum five (5) calendar days prior to the start of any work. Notices shall be attached to a red information hanger provided by the Contractor and hung on the front door knob of every resident on the project streets. Notices shall include the project times, dates, working hours, and description of project activities. If any changes occur to project times, dates or working hours, the Contractor will revise and re -deliver the Notice to affected persons. 2-2. Measure M Grant Futad�iiw, l ecluirements Communications Materials (including, but not limited to, press events, public and external newsletters, printed materials, advertising, websites radio and public service announcements, electronic media, and construction site signage.) must contains recognition of Los Angeles County Metropolitan Transit Authority's (LACMTA, Metro) contribution to the Project as more particularly set forth in "Funding Recipient Communications Guidelines" available online at: htt.:/Jnxet .net/ arty e -c-civic The Contractor shall be responsible for complying with the latest Funding Recipient Communications Guidelines during the term of this Agreement, unless otherwise specifically authorized by the Engineer. 3-0. MOBILIZATION Mobilization shall conform to the provisions of Section 7-3.4 of the Standard Specifications. The scope of work under mobilization includes but is not limited to: 1. Obtaining and paying for all required bonds, insurance, pennits, and licenses. 2. Completing and submitting required documents as required per specifications. 3. Moving on to the site of all Contractor's equipment required for operations. 4. Providing on -site sanitary facilities. 5. Arranging for and erection of Contractor's work and storage yard. 6. Posting all OSHA required notices. 7. Submittal of Construction Schedule, Contractor Contact List, and Notices to City staff for City approval. 8. Distribution of a City -approved Notice to Business and Residents at least one week prior to construction. 9. Re -notification of all affected parties for all construction schedule changes. 10. Protection of utility facilities, landscapes, pavements, structures, and any existing condition and other public property in place during any construction activities. This includes protection of planter boxes and vegetation. 11. Coordinating with Underground Service Alert (USA) or Dig Alert to mark underground utilities before any excavation. III-A-2 Agreement No. 6574 12. Coordination with utility agencies, street sweeper, and waste hauler to avoid conflicts during project activities. 13. Bringing unforeseen field conditions to City staff s attention in a timely manner. 14. Restoration of private and public property to existing standard conditions upon demobilization. 15. Installing and removing of all temporary facilities required for operations. 16. Removal and disposal of any existing unused materials from the project sites. 17. Furnishing temporary water services to maintain water services to consumers at all times. 18. Demobilization. 3-1. l lmIcrgrOUnd Service Alert 11�otrllcation Underground Service Alert, 1-800-227-2600, shall be contacted and the contractor shall determine the exact location of all utilities prior to beginning excavation and construction. If conflicts are discovered, the Contractor shall notify the Engineer immediately. A detailed description of the depth and location of utility conflicts in relation to the proposed storm drain facilities shall be provided to City Inspector as well as the applicable utility agency. A list of utility agency and waste hauler contact number- is included in the Appendix. 3-2, Demobilization Demobilization shall include all activities for the Contractor to remove all equipment, on -site sanitary facilities, etc. from the project areas after construction is complete. Demobilization shall also include general cleanup activities and specific punch list items and cleanup activities determined by the City staff or their representative, to repair or replace any private or public facilities damaged by the construction and return public right-of-way to the same or better condition as that existing prior to construction. 4-0. CLEARING AND GRUBBING Clearing, grubbing, and landscape removal shall take place as necessary for all construction activities to occur, including but not limited to Section 300-1 of the Standard Specifications. If applicable, live tree roots shall be inspected by the Recreation and Parks Department after the surface above them has been removed, to ascertain if tree root barrier installation or full tree removal is necessary. Costs for clearing, grubbing, and landscape/tree root removal shall be included in the bid prices for the different bid items. All such removals shall take place prior to any excavation for construction. Where necessary, the contractor shall replace residential landscaping or sprinklers damaged by construction after construction is complete. 5-0. TRAFFIC CONTROL Traffic control shall conform to the provisions of Part 6 of the Standard Specifications and these Specifications. The scope of work under traffic control includes but is not limited to: 1. Notification of City staff and residents/pedestrians, including temporary warning and safety signage leading to areas where construction is occurring or where materials are being staged. Notification shall take place at least 72 hours before construction as well as during construction. III-A-3 Agreement No. 6574 2. Traffic control as required per W.A.T.C.H. manual and CA MUTCD or approved traffic control plans. 3. Notification of transit agencies for bus stop relocation. 4. Obtaining various Encroachment Permits, including but not limited to City of El Segundo, City of Manhattan Beach, City of Hawthorne, City of Los Angeles, Los Angeles County, and Caltrans. 64 CONSTRUCTION & DEMOLITION MATERIALS RECYCLING 11�:IREMENTS The Contractor shall divert all Construction and Demolition (C&D) waste generated from the project in accordance with the California Green (CALGreen) Building Standards Code (pursuant to El Segundo Municipal Code, Title 13, Chapter 11). C&D waste can only be legally collected, removed, or transported by City of El Segundo permitted waste haulers. If the Contractor plans on collecting, removing, or transporting its own waste, approval from the City Engineer or designee is required. Failure to meet the C&D waste recycling requirements will result in the assessment of penalties pursuant to El Segundo Municipal Code. Contractor shall prepare a C&D Debris Management Plan as follows: 6-1. GENERAL 6-1.1. SUMMARY A. This Section includes the following: procedures for ensuring optimal diversion of construction and demolition (C&D) waste materials generated by the Work within the limits of the Construction Schedule and Contract Sum. 1. The Integrated Solid Waste Management Act of 1989 ("AB 939"), requires that localities throughout the state develop source reduction, reuse, recycling, and composting programs to reduce the tonnage of solid waste disposed in landfills by 50%; this requirement may increase in the future. C&D waste materials generated by the Work are targeted to achieve these diversion rates. 2. A minimum of 50% by weight of the solid wastes generated in the Work shall be diverted from landfill disposal through a combination of reuse, recycling, and composting activities. 3. This section includes requirements for submittal of C&D Debris Management Plan prior to the commencement of the Work, and during the project, submittal of Contractor's quantitative reports for construction and demolition waste materials generated by the Contractor as a condition of approval of progress payments submitted to the Contracting Officer, and following completion of the project, as a condition of the release of final project retention. 6-1.2. DEFINITIONS A. Class III Landfill. A landfill that accepts non -hazardous waste such as household, commercial, and industrial waste, resulting from construction, remodeling, repair, and demolition operations. A Class III landfill must have a solid waste facility permit from the California Department of Resources Recycling and Recovery (CalRecycle) and be regulated by the Enforcement Agency. III-A-4 Agreement No. 6574 B. Construction and Demolition Debris or C&D Debris. Building materials and solid waste resulting from construction, remodeling, repair, cleanup, or demolition operations that are not hazardous as defined in California Code of Regulations, Title 22, Section 66261.3 et seq. This term includes, but is not limited to, asphalt, concrete, Portland cement, brick, lumber, gypsum wallboard, cardboard and other associated packaging, roofing material, ceramic tile, carpeting, plastic pipe, and steel. The debris may be commingled with rock, soil, tree stumps, and other vegetative matter resulting from land clearing and landscaping for construction or land development projects. C. Contracting Officer. The City of El Segundo City Engineer or designee. D. C&D Recycling Center. A facility that receives only C&D material that has been separated for reuse prior to receipt, in which the residual (disposed) amount of waste in the material is less than 10% of the amount separated for reuse or recycling, by weight. E. Disposal. Final deposition of C&D or inert debris into land, including stockpiling onto land of construction and demolition debris that has not been sorted for further processing or resale, if such stockpiling is for a period of time greater than 30 days; and construction and demolition debris that has been sorted for further processing or resale, if such stockpiling is for a period of time greater than one year, or stockpiling onto land of inert debris that is for a period of time greater than one year. F. Diversion or Divert. The reuse or recycling of construction and demolition debris to avoid disposal in a landfill. G. Enforcement Agency (EA). Enforcement agency as defined in Public Resources Codc 40130. H. Inert Disposal Facility or Inert Waste Landfill. A disposal facility that accepts only inert waste such as soil and rock, fully cured asphalt paving, uncontaminated concrete (including fiberglass or steel reinforcing rods embedded in the concrete), brick, glass, and ceramics, for land disposal. I. Inert Solids or Inert Waste. Non -liquid solid wastes including, but not limited to, soil and concrete that do not contain hazardous waste or soluble pollutants at concentrations in excess of water quality objectives established by a regional Water Board pursuant to Division 7 (Sections 13000 et seq) of the California Water Code and does not contain significant quantities of decomposable solid resources. J. Mixed C&D Debris. Loads that include commingled recyclable and non -recyclable C&D debris generated at the construction site. K. Mixed Debris Recycling Facility. A processing facility that accepts loads of solid waste and/or recycling materials for the purpose of recovering reusable, recyclable, and compostable materials and disposing the non -recyclable residual materials. L. Recycling. The process of sorting, cleansing, treating and reconstituting materials for the purpose of using the altered form in the manufacture of a new product. Recycling does not include burning, incinerating, or thermally destroying solid waste. M. Reuse. The use of a material that might otherwise be discarded, in the same or similar form as it was produced. N. Separated for Reuse. Materials, including commingled recyclables, that have been separated or kept separate from the solid waste stream for the purpose of additional sorting or processing of those materials for reuse or recycling in order to return there to the economic mainstream in the form of raw material for new, reused, or reconstituted products which meet the quality standards necessary to be used in the marketplace, and includes materials that have been "source separated." O. Solid Waste. Refer to Public Resources Code Section 40191. III-A-5 Agreement No. 6574 P. Source -Separated. Materials, including commingled recyclables, that have been separated or kept separate from the solid waste stream at the point of generation, for the purpose of additional sorting or processing of those materials for reuse or recycling in order to return them to the economic mainstream in the form of raw materials for new, reused, or reconstituted products which meet the quality standards necessary to be used in the marketplace. 6-2. PRODUCTS Not Used. 6-3. EXECUTION 6-3.1. SAY.. AG.. 17tJSE. RECYCLING AND PROCEDURES A. Identify reuse, salvage, and recycling facilities: Refer to the City's website for a list of local organizations and companies. litl)s�://www.else,undo,or / overniraent/de artineiits/ rjblic-works/trash-rec clip B. Develop and implement procedures to reuse, salvage, and recycle new construction and excavation materials, based on the Contract Documents, the C&D Debris Waste Management Plan, estimated quantities of available materials, and availability of recycling facilities. Procedures may include on -site recycling, source separated recycling, and/or mixed debris recycling efforts. 1. Identify materials that are feasible for salvage, determine requirements for site storage, and transportation of materials to a salvage facility. 2. Explore the possibility of reusing project job -site inert materials, such as rock, concrete, dirt and aggregate, on -site for road base or other similar uses. 3. Source separate new construction, excavation and demolition materials including, but not limited to the following types: a. Asphalt b. Concrete, concrete block, slump stone (decorative concrete block), and rocks. c. Red Clay Brick d. Soils e. Other materials, as appropriate, such as wood and corrugated cardboard. 4. Develop and implement a program to transport loads of mixed (commingled) new construction materials that cannot be feasibly source -separated to a mixed materials recycling facility. 5. Contractor may develop their own C&D Debris Management Plan based on CALGreen requirements or use available City forms as follows: a. Form PW-A — Project Information b. Form PW-B — Pre -Project Worksheet c. Form PW-B 1 — Pre -Project Worksheet (This form is to be completed only if you plan to use your own company -owned bins/trucks for disposition of material.) d. Form PW-C —Post-Project Summary e. Form PW-D — Exemption Request — only use if it is infeasible to comply with requirements. III-A-6 Agreement No. 6574 6-3.2. DISPOSAL OPERATIONS AND WASTE HAULING A. Legally transport and dispose of materials that cannot be delivered to a source - separated or mixed recycling facility to a transfer station or disposal facility that can legally accept the materials for the purpose of disposal. B. Use a permitted waste hauler or Contractor's trucking services and personnel. To confirm valid pennitted status of waste haulers, visit the City of El Segundo website: https;//wNNw,else undo.or 1 overnm ntfd it rirnents/ t'iblic- ,oi°ks/trash-i•ee clip C. Become familiar with the conditions for acceptance of new construction, excavation and demolition materials at recycling facilities, prior to delivering materials. D. Legally transport and deliver to facilities that can legally accept new construction, excavation and demolition materials for purpose of re -use, recycling, or composting. E. Do not burn, bury or otherwise dispose of solid waste on the project job -site. 6-3.3. REUSE AND DONATION OPTIONS A. Implement a reuse program to the greatest extent feasible. Options for reuse may include, but are not limited to: l . Los Angeles County Materials Exchange (LACOMax) LACoMAX is a free service provided by the Los Angeles County Department of Public Works, Environmental Programs Division, designed to help residents, businesses, and organizations in Los Angeles County find markets for their industrial by-products, surplus materials, and other would-be discards. All exchanges are coordinated between the parties. The site can be accessed at lttt:://www.lad w.or r/end/lacomax. 2. California Materials Exchange (Ca1MAX) is a free service provided by the State of California, Department of Resources Recycling and Recovery (CalRecycle) that connects businesses, organizations, manufacturers, schools, and individuals with online resources for exchanging materials. The site can be accessed at w;vww.calrec cle.ca. ov/CaIMAX 3. Habitat for Humanity Restore resale outlets accept donated home improvement goods like furniture, home accessories, building materials and appliances. The materials are sold to the general public. The proceeds help local Habitat affiliates fund the construction of Habitat homes within their communities. Locations of ReStores can be found at: www.habitat.or���/Mores 6-3.4. REVENUE Revenues or other savings obtained from recycled, re -used, or salvaged materials shall accrue to Contractor unless otherwise noted in the Contract Documents. 7-0. WORK SCHEDULE Contractor shall be responsible for providing a workable construction schedule that incorporates the following conditions: 1. The schedule for the work is subject to the approval of the Public Works Department. 2. All work shall take place Monday through Friday between the hours of 9:00 am and 3:00 pm unless previously approved by the Public Works Director, City Engineer, or Project Engineer for any other day of the week. III-A-7 Agreement No. 6574 i. Night work shall be arranged at least 5 calendar days in advance. ii. No night work shall occur within a 500' radius of hotels. iii. No work shall be permitted on Sundays or holidays. iv. Overtime inspection fees (4 hour minimum) shall be arranged in advance. 3. The Contractor shall coordinate all inspections and final sign -offs for permits and the project with Public Works Department and Building Safety staff. 8-0. EXAM INA I'ION OFJOB SITE AND MEAS U Rli'M ENTV . I IFICATION The BIDDER shall snake a detailed physical inspection of the project site before submitting the proposal. It is understood that the BIDDER has thoroughly examined the specifications, sites and conditions under which work will be performed before submitting a proposal and has satisfied himself regarding existing conditions and existing access conditions which may affect bid prices for the proposed work. Measurement Verification: Contractor shall verify all field measurements and determine quantities prior to ordering materials. Contractor shall procure all material and confirm all parts are onsite prior to beginning installation. 9-0. INSPECTION Subsection 4-1.3 of Section Il — General Provisions of these Specifications is supplemented by the following additional requirements: 1. On all questions relating to quantities, the acceptability of material, or work, the execution, progress or sequence of work, and the interpretation of specifications or plans, the decision of the Engineer is final and binding, and shall be precedent to any payment under the contract. 2. All work and materials are subject to inspection and approval of the Engineer. 3. Legible copies of material/weight certification shall be turned over to the inspector on a daily basis. 4. Inspection of the work shall not relieve the Contractor of the obligations to fulfill all conditions of the contract. 10-0. WORK AREA SAFETY All work shall conform to all applicable State, local, regional, and Federal codes, ordinances, and regulations as prescribed by the City. 1, The Contractor shall conform to the rules and regulations pertaining to safety established by the California Division of Occupational Safety and Health of the Industrial Relations Department (CAL -OSHA). III-A-8 Agreement No. 6574 2. The CONTRACTOR shall place and maintain signs, cones, barricades, security fences, and other safety devices as needed for the safety of and the general public, City personnel, and the Contractor. 11-0USE OF PRIVATE PROPERTY AND PROTECTION OF EXISTING IMPROVEMENTS The use of any private property or utilities on private property by the Contractor is prohibited. The prohibited uses include, but not limited to Contractor's use of water, electricity or natural gas from the private property, and storage of material or equipment, and turning around/parking of his vehicles on private property. 1. Existing public and/or private improvements, adjacent property, utility and other facilities and trees and plants shall be protected from injury or damage. 2. Any damage to the facilities, public, or private property that takes place as a result of the contractor's work shall be repair or replaced to the City's satisfaction by the contractor at no cost to the City. 3. Access to driveway shall be maintained at all tunes for residents. 12-0. STORAGE OF MATERIALS AND I QUIZ NIE.N1 1. No material or equipment shall be stored in public right-of-way without prior approval from the Public Works Department. 2. The Contractor shall be responsible for obtaining a site for storage of material and equipment. The site shall not be within or adjoining the residential areas of the City. Site shall be subject to approval by the City. 3. The sites for stockpiling and batching materials shall be clean and free from objectionable material. 4. The City does not guarantee any designated property within the City for storage of materials. If the Contractor finds a private property for storage of his materials, the Contractor shall furnish the City a letter of approval and a letter of release (at the end of the job and cleanup of the storage site) from the property owner for this purpose. 13-0. DISPOSA1mm O REMO . , L There are no authorized dump facilities within the City of El Segundo. All removed material shall become theproperty of the Contractor and shall be legally disposed of by Contractor at the end of each work day away from the site of work. 14-0. Bt�111.1)ING S Fk:s"1 Y AND C [JBI,I "IOR1 ENCROAf l lip EN_1 _I' ;l Ml'T The Contractor will be required to apply and obtain applicable permits from the Public Works and the Building Safety Departments. The Contractor's work shall adhere to the City standards and applicable codes including the California Building Code, Plumbing Code, Electrical Code, and Mechanical Code. The Contractor shall call the Inspector at least 24 hours in advance for inspections. All noted deficiencies on permits shall be corrected by contractor. The project will not be accepted as complete until contractor obtains a final sign -off for all permits. III-A-9 Agreement No. 6574 15-0 S(JRVEY MONUMENTATION P ESE'RV ,riO'N The Contractor shall locate and reference existing survey monumentation in the way of construction and submit verification to the Engineer prior to demolition/removal. If they cannot be protected in place, Contractor's state -licensed surveyor is to re- establish them after construction and provide the City with the new centerline tie information at no additional cost to the City. Upon discovery of a survey monument not identified on the project plans, immediately stop work near the monument and notify the Engineer. Do not resume work near the monument until authorized. 15-1 Tie-Orat and lie -establish SL11- ey Monuments and. BettcBtnnarks: In accordance with Section 8771 of the Business and Professional Code, the Contractor will be required to hire a licensed land surveyor to tie out documentation affected by the project prior to commencement of construction and require the land surveyor to file corner records with the engineer; and re-establish and such monuments or benchmarks damaged or destroyed during construction and file corner records with the Los Angeles County after replacement. 16-0. WATER POLLUTION CONTROL. Water Pollution Control shall conform to Section 3-12.6 "Water Pollution Control" of the Standard Specifications and these Specifications. 16-1. NPDES COMPLIANCE Contractor shall comply with the latest version of the Los Angeles Regional Water Quality Control Board (LA RWQCB) NPDES MS4 Permit and the NPDES California Construction General Permit for storm water and non-stonm water discharges. Contractor shall not discharge or permit to be discharged to any street, channel, river, storm drain, or any appurtenances thereof, any non -rain water or other liquid substance from the project or from operations pertaining to the project site, unless the discharge is specifically listed as exempt or conditionally exempt in the most current MS4 Permit issued by the Regional Water Quality Control Board, Los Angeles Region. Contractor shall implement all necessary Best Management Practices (BMPs) to ensure that any conditionally exempt discharge meets all current requirements of the LA RWQCB MS4 Pen -nit. City may prohibit or restrict any discharge if, in its sole discretion, the discharge is polluting, unsafe, or causes a nuisance condition to be created. 16-2. STORMWATER POLLUTION PREVENTION PROGRAM A Stonnwater Pollution Prevention Plan (SWPPP) has been prepared for this project and uploaded to the State Water Board SMARTS system, provided in Appendix D. The City will file for a Notice of Intent and obtain a WD1D number. III-A-10 Agreement No. 6574 This project has been identified as a Risk Level 1. Within 15 days of contract approval, submit an updated SWPPP to include contractor -specific language. The SWPPP update shall be prepared by a Qualified SWPPP Developer (QSD). The SWPPP update must include: 1. Updated Construction Site Monitoring Program 2. Updated maps including the following a. Locations and types of water pollution control practices for each Contractor -support facility b. Locations and types of water pollution control practices that will be used in the work for each construction phase c. Locations planned for the storage and use of potential nonvisible pollutants 3. A schedule showing when work activities that will be performed have the potential for discharge of pollutants into stonnwater, and water pollution control practices, including soil stabilization and erosion control associated with each phase of construction 4. Training records for project personnel If revisions are required, the Engineer notifies you of the date when the review stopped and provides comments. Submit a revised SWPPP within 15 days of receiving the comments. The Engineer's review resumes when a cornplete SWPPP has been resubmitted. Submit an electronic copy of the authorized SWPPP, Do not start job site activities until (1) the SWPPP is authorized and (2) a waste discharge ID number is issued. Submit a revised SWPPP annually before July 15th and any time: 1. Changes in work activities could affect the discharge of pollutants 2. Water Pollution Control practices are added as change order work 3. Water Pollution Control practices are added at your discretion 4. Changes in the quantity of disturbed soil are substantial 5. Objectives for reducing or eliminating pollutants in stormwater discharges have not been achieved 6. You receive a written notice of a permit violation for the project from the RWQCB or any other regulatory agency Submit 2 copies of a stormwater annual report before July 15th for the preceding construction period from July 1 st through June 30th or within 15 days after Contract acceptance if construction ends before June 30th. 174 TREE & TREE ROOTS Tree stump definition: the remaining portion of the tree trunk after a tree trunk has been cut and the majority of the felled tree removed. III -A- I I Agreement No. 6574 Tree root definition: the portion of a tree that grows out of a tree trunk and can continue to grow above ground and/or underground, providing the tree with nourishment and support. Tree roots can be any length or diameter. After a tree has been cut down, tree roots continue to extend from the stump. No tree shall be removed from public property without the approval of Recreation and Parks Department. Asphalt pavement significantly damaged by tree roots shall be repaired prior to final paving. The Contractor shall coordinate with City staff for Recreation and Parks Department to assess, after removal, if tree root barrier installation or full tree removal is necessary. The Contractor may move on to a construction on a different portion of the project in the interim. The Contractor shall be responsible for removing any remaining tree stump and roots in the parkway, or tree roots in the pavement, as applicable to the project. Any removal necessary for the construction of concrete or asphalt improvements shall be completed before the replacement of the concrete or asphalt. Where tree roots have damaged and uplifted the asphalt to be replaced per these specifications, the contractor shall sawcut beyond the damaged area by a minimum of 6 (six) inches in all applicable directions. Sawcuts shall be parallel or perpendicular to existing curb face. Contractor shall cut all interfering tree roots, and remove and repair the portions of damaged asphalt within the sawcut area. 18-0. CURB DRAIN OUTLETS The Contractor shall reconstruct all curb drainage outlets that fall within the limits of his/her work. 19-0. 11 T FITI ° )N I"ROL,i'_l F3I..l " SAl 1'TY AND CONVENIENCE Traffic control, construction signing, and traffic maintenance shall comply with the provisions of Part 6 of the SSPWC "Greenbook" Standard Specifications and the current requirements set forth in the California Manual on Uniforin Traffic Control Devices published by the Department of Transportation, State of California, the Contractor's Traffic Control Plans and these Special Provisions. 20-0. TR,AS11, I °l;UP. STREET SWEEPING, AND MAIL DELIVERIES The Contractor shall coordinate with the City waste hauler and the City street sweeper to avoid construction conflicts on days when trash will be collected or streets will be swept on the project streets. If applicable, the contractor must also coordinate with the US Post Office to ensure that mail will be delivered without interruption. The notification to the US Post Office shall be submitted to the City for approval before the notice is sent out. III-A-12 Agreement No. 6574 21-0. COMPLETION Upon completion of work at each site, the Contractor shall conduct careful inspection with the City Inspector and shall correct all defective work to the satisfaction of the Owner. The Contractor shall coordinate all inspections and final sign -offs for Encroachment Permits and Building Permits with City staff. All scrap, litter and debris resulting from operations specified herein, shall be removed and the premises left in a clean and satisfactory condition. 22-0. WARRANTY The Contractor and/or manufacturer shall warrant all work performed under this Contract for a minimum of two (2) years from the date of Owner's acceptance of completed job. Any defects in materials or workmanship appearing during this period shall be corrected without cost to the City. - End of section - III-A-13 Agreement No. 6574 SECTION IV — MEASUREMENT AND PAYMENT 1-0. GENERAL .................................. — Proposed Bid prices shall be complete for each bid item. The bid item work below to be measured and paid for shall be carried out in accordance with the Standard Specifications, the project plans, these specifications, as directed by the City Inspector, and in addition any applicable government codes related to the work or named in the descriptions for the bid item. Prior to bidding, the Contractor shall inspect project areas and bring any discrepancies to the City's attention. Bid item prices shall cover the costs for all mobilization, demolition, excavation, site preparation, pavement installation, striping and marker installation, utility cover adjustments, and other construction activities, and demobilization activities required for each item. Bid item costs shall include complete removal and immediate disposal of excavation debris, preparatory removal of vegetation, tree stumps, and tree roots as necessary, temporary paving and public safety measures, and the restoration of landscaping, public and private property damaged during the construction, to the City's satisfaction. Should the contractor request and obtain permission to use admixtures for its own benefit, it shall furnish such admixtures and incorporate them in the mixture at its expense, and NO additional compensation will be allowed. 2-0. PAYMENT SCHEDULE 2-1. MOBILIZATION (BID ITEM NO. 1) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum, non-proratable pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals necessary per the Contract Documents. The scope of work includes all items listed in Article 3-0 of Section III, Special Provisions. 2-2. TRAFFIC CONTROL (BID ITEM NO. 2) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The scope of work includes all items listed in Article 5-0 of Section III, Special Provisions. The unit price shall include full compensation for preparing traffic control plans, obtaining Encroachment Permits with Caltrans, Los Angeles County, City of Los IV-A-1 Agreement No. 6574 Angeles, City of Hawthorne, and City of Manhattan Beach, furnishing, installation, and maintaining traffic control during all stages of construction, removing traffic control devices when they are no longer needed, and furnishing and installing project information signs, as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-3. STORMWATER POLLUTION CONTROL (BID ITEM NO. 3) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals for doing all the work involved in complying with the water pollution control requirements herein and for doing all the work involved in revising and amending the Stormwater Pollution Control Plan (SWPPP), monitoring and testing as specified in the Standard Specifications and these Special Provisions, and no additional compensation will be allowed. Payment to be made under this bid item shall be for Stormwater Pollution Control, including updating the SWPPP, monitoring, inspection and sampling and analysis as required, and any mitigation required if analytical results are out of compliance with the SWPPP and for complete, in place, maintained, removed, and accepted work; complete in place and will be made at the lump sum price named in Bid Schedule, which price shall constitute full compensation for completion of all such work as required herein. Payment of 20% of the Bid Item price shall be made upon revising, amending SWPPP, and dcployment of the SWPPP Best Management Practices (BMP's). Payment of the remaining portion of the Bid Item price shall be made in equal installments for implementation of the SWPPP. 2-4. CLEARING AND GRUBBING (BID ITEM NO. 4) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule. Such payment shall be considered full compensation for furnishing all labor, materials, tools, equipment, and all incidentals, and for doing all the work involved in clearing and grubbing and locating, removing, hauling and disposing of any materials as required, including existing irrigation facilities and removal and backfill of tree roots and stump, as specified in Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-5. SIGNING AND STRIPING (BID ITEM NO. 5) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule. Such payment shall be considered full compensation for furnishing all labor, materials, tools, equipment, and all incidentals, and for doing all the work involved in removing existing signs Agreement No. 6574 and posts, resetting, relocating, providing and installing traffic signing as shown on plans, removing existing striping, markers, marking, providing and installing traffic striping, pavement markings and markers as shown on the plans, repair of existing surfaces, as specified in the Standard Specifications, the State Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-6, SHORING AND BRACING (BID ITEM NO. 6) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule. Such payment shall be considered full compensation for furnishing all labor, materials, tools, equipment, and all incidentals, and for doing all the work involved in preparing and implementing shoring plans in conformance with California Labor Code Section 6707, as specified in the Standard Specifications, the State Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-7. RESET SURVEY MONUMENT (BID ITEM NO. 7) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for surveying and replacing existing monuments impacted by construction activities and submitting proper documentation, as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-8. REMOVE EXISTING ASPHALT FACILITY (BID ITEM NO. 8) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for sawcutting, removal, and disposal as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-9. REMOVE EXISTING CONCRETE FACILITY (BID ITEM NO. 9) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. IV-A-3 Agreement No. 6574 The unit price shall include disposing existing concrete Specifications, as specified compensation will be allowed. full compensation for sawcutting, removing, and s shown on plans, as specified in the Standard in these Special Provisions, and no additional 2-10. REMOVE EXISTING TREE (BID ITEM NO. 10) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perfonn this work. The unit price shall include full compensation for cutting and disposal of the tree, as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-11. REMOVE EXISTING CATCH BASIN (BID ITEM NO. 11) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for removing and disposing of the catch basin structure, plugging existing pipe, backfill/abandon existing pipe, and backfilling to existing grade, as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-12, REPLACE EXISTING DRAINAGE GRATES (BID ITEM NO. 12) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for removal and disposal of the existing grates, and procurement and installation of the new grates, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-13. ADJUST TO GRADE EXISTING FACILITIES (BID ITEM NO. 13, 14, 15, 16, 17, 18) Measurement for payment for these items shall be billed for on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall constitute full compensation for furnishing all labor, equipment, tools, materials, and incidentals for adjustment of manholes, vaults, meters, and valve covers to final IV-A-4 Agreement No. 6574 grade, as shown on plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-14. RELOCATE EXISTING FIRE HYDRANT (BID ITEM NO. 19) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for relocating the existing hydrant, bury, and appurtenances, and installing the existing fire hydrant at the new location complete in place to meet City standards, including the hydrant bury, as shown on the plans, including excavation, disinfection, and testing, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-15. UNCLASSIFIED EXCAVATION AND ON -SITE FILL (BID ITEM NO. 20, 21) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for general excavation, on -site fill, sand, nonwoven geotextile, and relocation of existing rocks, including loading, hauling, disposing of surplus or unsuitable material or dumping and spreading excavated material, moisture conditioning, compacting or consolidating, grading and shaping or any and all other work required to excavate and place existing on -site soils to the grading limits shown in the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-16. COLD MILL (BID ITEM NO. 22,23) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for cold planing, dust control, street sweeping, removal, and disposal of asphalt material, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. IV-A-5 Agreement No. 6574 2-17. CRUSHED MISCELLANEOUS BASE (BID ITEM NO. 24) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for furnishing, placing, and compacting the crushed miscellaneous base under AC, curb ramp, curb, curb and gutter, cross gutter, sidewalk, driveways, subgrade preparation and compaction, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-18. CEMENT STABILIZED PULVERIZED BASE (BID ITEM NO. 25,26) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for pulverizing existing or remaining asphalt concrete, spreading and mixing Portland cement into pulverized material/base/subgrade, compaction, curing, microcracking, and removal and disposal of excess material, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-19„ ASPHALT CONCRETE TEST STRIP (BID ITEM NO. 27) Measurement for payment of this item shall be billed as a lump sum pay item, as named in the Bid Schedule. Such payment shall be considered full compensation for furnishing all labor, materials, tools, equipment, and all incidentals, and for doing all the work involved in furnishing, placing, and compacting the asphalt concrete test strip including tack coat, removal of unauthorized test strips, plan submission for changes due to unauthorized test strip results, and furnishing, placing and compaction additional asphalt concrete test strips until authorization is achieved, as specified in Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-X ASPHALT CONCRETE (BID ITEM NO. 28) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for furnishing, placing, and compacting the asphalt concrete including leveling course and tack coat, as shown IV-A-6 Agreement No. 6574 on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-21. ASPHALT RUBBERIZED HOT MIX (BID ITEM NO. 29) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for furnishing, placing, and compacting the asphalt rubberized hot mix including tack coat, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-22. MICROSURFACING (BID ITEM NO. 30) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for spreading and application of microsurfacing, including surface preparation, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-23. JOINTED PLAIN CONCRETE PAVEMENT (BID ITEM NO. 31) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for constructing the jointed plain concrete pavement complete in place, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-24. CONCRETE SIDEWALK (BID ITEM NO. 32) Measurement for payment of this item shall be in accordance with the `Concrete Limits of Payment' detail as shown in the Project Plans and shall be billed on a units - completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. IV-A-7 Agreement No. 6574 The unit price shall include full compensation for constructing the concrete sidewalk complete in place, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-25. CONCRETE SIDEWALK (STAMPED AND COLORED) (BID ITEM NO. 33) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in construction of the stamped and colored concrete complete in place, including test panel construction and disposal, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-26. CURB RAMP (BID ITEM NO. 34) Measurement for payment of this item shall be in accordance with the `Concrete Limits of Payment' detail as shown in the Project Plans and shall be billed on a units - completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for constructing the curb ramp / island Passageway complete in place, including detectable warning surface, curbs, curb and gutter, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-27. INSTALL DETECTABLE WARNING SURFACE ON EXISTING RAMP (BID ITEM NO. 35) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in installing the detectable warning surface on existing curb ramp complete in place, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-28. CURB, CURB AND GUTTER, CROSS GUTTER (BID ITEM NO. 36, 37, 38, 39) Measurement for payment of this item shall be in accordance with the `Concrete Limits of Payment' detail as shown in the Project Plans and shall be billed on a units - completed basis at the contract unit price per unit named in the Bid Schedule, and IV-A-8 Agreement No. 6574 shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in construction of the curb and/or gutter complete in place, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-29, CURB DRAIN / PARKWAY DRAIN (BID ITEM NO. 40, 41) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in constriction of the curb drain / parkway drain complete in place, including connection to existing drain, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-30. DRIVEWAY APPROACH (BID ITEM NO. 42) Measurement for payment of this item shall be in accordance with the `Concrete Limits of Payment' detail as shown in the Project Plans and shall be billed on a units - completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for constructing the driveway approach complete in place, including curb and gutter and thickened sidewalk, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-31. CATCH BASIN (BID ITEM NO. 43, 44) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in construction of the curb opening catch basin complete in place, including gutter local depression, manhole frame and cover, steel steps, face plate assembly and protection bar, connector pipe screen, painted gauge, grating, procurement and installation of reinforced concrete pipe, concrete collar and connection to existing pipe, excavation, bracing and protecting existing utilities, abandoning existing pipe, removing interfering abandoned utility lines, subgrade preparation and compaction, backfill, IV-A-9 Agreement No. 6574 and "no dumping" stencil, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-32. RESET LOOP DETECTORS (BID ITEM NO. 45) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The unit price shall include full compensation for doing all the work involved in resetting the loops for functional traffic signal operation at the El Segundo Boulevard and Pacific Coast Highway intersection complete in place, including coordinating with Caltrans, sawcutting, and sealant, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-33. TRAFFIC SIGNAL MODIFICATIONS (BID ITEM NO. 46, 47, 48, 49, 50, 51) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The unit price shall include full compensation for doing all the work involved in installing functioning traffic signal modifications and lighting systems complete in place, including removing and/or relocating existing traffic signal facilities, potholing, excavating, furnishing and installing temporary traffic signal facilities, furnishing and installing pullboxes, conduits, conductors, wiring, controllers, loops, and battery backup systems, Los Angeles County coordination, City of Los Angeles coordination, Southern California Edison coordination and work, and surface restoration, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-34. MEDIAN CONCRETE (STAMPED AND COLORED) (BID ITEM NO. 52) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in construction of the stamped and colored concrete complete in place, including test panel construction and disposal, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. IV-A-10 Agreement No. 6574 2-35. CLEAN AND RESTAIN EXISTING STAMPED CONCRETE (BID ITEM NO. 53) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perfornl this work. The unit price shall include full compensation for doing all the work involved in cleaning and restaining the existing stamped concrete complete in place, including stamping pattern and colorizing, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-36. SHRUB / TREE (BID ITEM NO. 54, 55, 56) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in planting the tree complete in place, including excavation, grade adjustments for placement and drainage, guying and staking, tree protection measures, and watering, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-37. DECOMPOSED GRANITE GROUNDCOVER (BID ITEM NO. 57) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in furnishing, placing, and compacting the decomposed granite complete in place, including fine grading and subgrade compaction, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-38. SOIL PREPARATION / FINE GRADING (BID ITEM NO. 58) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The unit price shall include full compensation for doing all the work involved in preparing soil and fine grading activities in planting areas, as shown on the plans, as IV -A -I I Agreement No. 6574 specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-39. ROOT BARRIER (BID ITEM NO. 59) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for doing all the work involved in installing root barrier complete in place, including excavation and backfill, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-40. IRRIGATION SYSTEM (BID ITEM NO. 60) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule. Such payment shall be considered full compensation for furnishing all labor, materials, tools, equipment, and all incidentals, and for doing all the work involved in installing a functioning irrigation system complete in place, including water meter connection and electrical connection, Los Angeles County Department of Public Health coordination, West Basin Municipal Water District coordination, Golden State Water Company coordination, and Southern California Edison coordination, as shown on the plans, as specified in Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-41. LANDSCAPE MAINTENANCE AND ESTABLISHMENT (90-DAYS) (BID ITEM NO. 61) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The unit price shall include full compensation for doing all the work involved in maintaining landscaping during the establishment period, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-42. ALTERNATIVE BID ITEM: CURB RAMP (BID ITEM NO. 62A) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. IV-A-12 Agreement No. 6574 The unit price shall include full compensation for design, layout, and constructing the curb ramp complete in place, including sawcutting, removing existing asphalt pavement (minimum 2' width) and concrete, excavating, backfilling, constructing curbs, curb and gutter, cross gutter, sidewalk, and asphalt paving (minimum 6" thick), and furnishing and installing detectable warning surface, as shown on the alternative bid exhibit, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-43. ALTERNATIVE BID ITEM: RELOCATE FIRE HYDRANT (BID ITEM NO. 63A) Measurement for payment of this item shall be billed on a units -completed basis at the contract unit price per unit named in the Bid Schedule, and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals needed to perform this work. The unit price shall include full compensation for relocating the existing hydrant, bury, and appurtenances, and installing the existing fire hydrant at the new location complete in place to meet City standards, including the hydrant bury, as shown on the plans, including excavation, disinfection, and testing, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 2-44. ALTERNATIVE BID ITEM: FURNISH AND INSTALL TRAFFIC SIGNAL POLE (EL SEGUNDO BOULEVARD / ILLINOIS STREET, POLE #3) (BID ITEM NO. 64A) Measurement for payment of this item shall be billed on a percentage completed basis as a lump sum pay item, as named in the Bid Schedule and shall include full compensation for furnishing all labor, equipment, tools, materials, and incidentals per the Contract Documents. The unit price shall include full compensation for doing all the work involved in installing functioning traffic signal modifications and lighting systems complete in place, including removing and/or relocating existing traffic signal facilities, excavating, furnishing and installing conduits, conductors, wiring, and surface restoration, as shown on the plans, as specified in the Standard Specifications, as specified in these Special Provisions, and no additional compensation will be allowed. 3-0. PROGRESS PAYMENTS AND RETENTION Lump sum items shall be billed on a percentage completed basis. Unit -based items shall be billed on a units -completed basis. The City reserves the right to request a schedule of values to be submitted by the contractor for any or all bid items in order to determine payment for work completed. IV-A-13 Agreement No. 6574 Five percent (5%) shall be deducted from each progress payment and retained by City until punch lists are complete, the Notice of Completion has been recorded by the County, and all permits are signed off by the appropriate City representative. The remainder less the amount of all previous payments will be paid to the Contractor. Payment of all, or any part, of an estimate in writing may be withheld on account of any of the following: Defective work not remedied; Third -party claims against Contractor or City arising from the acts or omissions of Contractor or subcontractors; Stop Notices; Failure of Contractor to make timely payments due to subcontractors for material or labor; Damage to the City or others for which Contractor is responsible; Failure of Contractor to submit schedules or their updates as required by the Contract Documents; Liquidated damages assessed; Any other failure of Contractor to perform its obligations under the Contract Documents. IV-A-14 Agreement No. 6574 SECTION V — TECHNICAL SPECIFICATIONS 1-0. TRAFFIC CONTROL AND CONSTRUCTION SIGNING 1-1. SCOPE This work shall include, but not be limited to providing traffic handling/detour/stage construction plans, installing, and maintaining traffic control devices including, but not limited to: signing, striping, markings and markers, barricades, flashing arrow boards, signing for detours, and traffic channelization, as may be required to ensure the safe movement of vehicles and pedestrians, and to provide for the safety of construction workers. The Contractor shall be responsible for maintaining Traffic Control in accordance with the plans, the provisions of Part 6 "Temporary Traffic Control" of the Standard Specifications, and Section 12-3, "Temporary Traffic Control Devices" of the State Standard Specifications (SSS), the current requirements set forth in the latest California Manual on Uniform Traffic Control Devices (CA-MUTCD). The Contractor shall notify the Engineer of its intention to begin work at least ten working days before starting any work. 1-2. TRAFFIC CONTROL The Contractor shall be responsible for handling vehicular and pedestrian traffic in accordance with the plans, Part 6 of the Standard Specifications and these Special Provisions. The Contractor shall keep streets in and adjacent to the construction area clean. In each stage, after completion of the preceding stage, the first order of work shall be the removal of existing pavement delineation by sandblasting or grinding as directed by the Engineer. Pavement delineation and raised pavement marker removal shall be coordinated with new delineation so that lane lines are provided at all times on traveled ways open to public traffic. If the roadway has a drop off to the shoulder after the asphalt concrete overlay of 2 inches or more difference and has curves, the Contractor shall mark the edge of the traveled way with white temporary marking tape and place cones at no more than 5 foot intervals where the drivers are likely to drift off the roadway or where there are merging lanes. The interval shall be 8 to 10 foot on tangent sections. The Contractor shall regrade the shoulder no later than one week after the final lift is in place. The Contractor shall accelerate the grading of the shoulder in the curved sections where the drop offs are 2 inches or more. If a difference in excess of 0.15 foot exists between the elevation of the existing pavement and the elevation of an excavation within 5 feet of the left edge or within 8 feet of the right edge of the traveled way at the end of each working day, place and compact material against the vertical cut adjacent to the traveled way. During the excavation, you may use native material for this purpose except you must use structural V-A-1 Agreement No. 6574 material once you start placing the structural section. Place the material to the top of the existing pavement and taper at a slope of 10:1 (horizontal: vertical) or flatter to the bottom of the excavation. Do not use treated base for the taper. Traffic control signs shall be covered or removed when not in use. Traffic Control Plans and Encroachment Permits The Contractor shall prepare and submit traffic control plans for the roadway improvements on El Segundo Boulevard, Continental Boulevard, Nash Street, and Douglas Street. Traffic handling plans shall be submitted, in accordance with Section 3-8, "Submittals" of the Standard Specifications to the Engineer within 14 calendar days after receipt of the Notice to Award. The plans shall be prepared by a Registered Engineer in accordance with current modern engineering practice and shall be of a size and scale to clearly show all necessary details. Each plan shall be a good quality print. Typical plans and sections will not be accepted. The traffic handling plans shall be site -specific. The Contractor shall allow a minimum of 10 working days for review of the submittal. If extensive additions or corrections are required, the Engineer will return a marked -up print for corrections and re -submission. Work shall not begin in the public roadway without the approved traffic handling plans. No extension of time will be allowed as a result of the Contractor's failure to properly produce traffic handling plans. The project includes replacing traffic loop detectors for the Pacific Coast Highway intersection approach and will require temporary traffic control devices within Pacific Coast Highway (Caltrans right of way). The Contractor shall prepare Caltrans Encroachment permit application and required traffic control plans and obtain a Caltrans Encroachment Permit. The project includes curb ramp and pavement reconstruction on Nash Street and eastbound Imperial Highway. The north leg of the intersection is the Interstate 105 off - ramp and westbound Imperial Highway is within City of Los Angeles limits and will require temporary traffic control devices on each facility. The Contractor shall prepare Caltrans Encroachment permit application and required traffic control plans and obtain a Caltrans Encroachment Pen -nit. The Contractor shall prepare City of Los Angeles Encroachment permit application and required traffic control plans and obtain a City of Los Angeles Encroachment Permit. The Contractor shall prepare City of Los Angeles, Department of Transportation Encroachment permit application for loop detector work and obtain a City of Los Angeles, Department of Transportation Encroachment Permit. The project includes curb ramp and pavement reconstruction on westbound El Segundo Boulevard between Aviation Boulevard and Isis Avenue. Adjacent areas are within City of Hawthorne and Los Angeles County limits and will require temporary traffic control devices in each jurisdiction. The Contractor shall prepare City of Hawthorne permit application and required traffic control plans and obtain a City of Hawthorne Encroachment Permit. The Contractor shall prepare Los Angeles County Encroachment permit application and required traffic control plans and obtain a Los Angeles County Encroachment Permit. V-A-2 Agreement No. 6574 The project includes signing and striping improvements on northbound Douglas Street north of Rosecrans Boulevard. The southern half of Rosecrans Boulevard is within City of Manhattan Beach limits and will require temporary traffic control devices in each jurisdiction. The Contractor shall prepare City of Manhattan Beach permit application and required traffic control plans and obtain a City of Manhattan Beach Encroachment Permit. 1-3. CONSTRUCTION SIGNING Construction Signing shall consist of furnishing, installing, maintaining, and removing construction signs and barricades. A "Road Work Ahead" sign (W20-1) mounted on either a 4" x 4" wood post or a Type III barricade shall be installed at each approach in accordance with CA-MUTCD. The signs for each road shall be installed prior to starting work on that road and shall not be removed until all work has been completed on that road. Portable Changeable Message..S gLis Nine (9) Portable Changeable Message Signs (PCMS) shall be furnished. PCMS's shall be placed in the following locations: • El Segundo Boulevard, at east and west project limit (2) • Nash Street, at northern project limit (1) • Douglas Street, at north and south project limits (2) • Four (4) at the discretion of the engineer, and may be moved during the contract period The Contractor- shall program messages and place in location as directed, including periodic relocations as required. The Contractor shall maintain the signs in good condition and operational 24/7 throughout the contract period until the execution of the Notice of Completion. The wording on the signs will be determined by the Engineer. Prot Information Si ils The Contractor shall furnish, install, maintain, update, and upon project completion, remove and dispose Project Information Signs. These signs shall be posted seven (7) days prior to starting work. These signs will be posted in advance of construction work zones at locations selected by the Engineer. Two (2) project information signs will be required for this project. The locations are at each project limit of El Segundo Boulevard. All signs shall be updated for each stage of construction and when information on signs is incorrect. The sample project information sign is provided in Appendix B. Project information signs shall be made from 1" thick ACX exterior grade plywood with an exterior grade prime coat, finish coat, and painted lettering. Full compensation for project information signs shall be considered included in the contract lump sum price for Traffic Control and no separate or additional compensation will be allowed. V-A-3 Agreement No. 6574 REA Temporary striping and markings for traffic control shall conform to Section 12-6, "Temporary Pavement Delineation," of the State Standard Specifications. Temporary striping and markings shall be installed prior to opening road to traffic. Temporary striping and markings shall be maintained, repaired, and replaced as required until their removal is approved by the Engineer. If temporary striping and markings are damaged, from any cause, they shall immediately be replaced or restored to their original conditions, by the Contractor 24 hours per day, 7 days per week for as long as required. Temporary striping and marking which has no further use shall be removed by wet sandblasting. All sand used in sandblasting shall be removed without delay as the sandblasting operation progresses. Pavement legends shall be removed in a block pattern. STOP bars: On roads to be delineated and on which permanent delineation will not be applied before public traffic is allowed on the freshly ground or paved surface, Temporary Stop bars shall be placed at all signals and stop signs the same day that paving or grinding occurs. Temporary Stop Bars shall be 12 inches wide and shall be white in color. 1-5. GENERAL WORK SEQUENCE AND RESTRICTIONS ON CLOSURE OF TRAFFIC LANES Contractor shall conform to the following work area traffic requirements: El Se_gundo o ul vard: Kansas Street to Pacific Coast Hi,ghwa�, Maintain one (1) lane of traffic in each direction open at all times through the work area. Lj Scaind'o rBO 11evard: Pacific oast Ljighwav t Dogglas Street. Maintain two (2) lanes of traffic in each direction open at all times through the work area. Between the hours of 9:OOam and 4:OOpm, requirement is one (1) lane in the westbound direction. Between the hours of 7:OOam and 3:OOpm, requirement is one (1) lane in the eastbound direction. Maintain one (1) lane of traffic in each direction open at all times throughout the work area during cement pulverized stabilized base construction (3 weeks maximum). 1 L egundo Boulevard 1oLi Ig as Street to Psis Street. Maintain two (2) lanes of traffic in each direction open at all times through the work area. Maintain one (1) lane of traffic in each direction open at all times throughout the work area during cement pulverized stabilized base construction (3 weeks maximum). Continental Boulevard: El Seund'o Boulevard to Grand Avenue Maintain two (2) lanes of traffic in each direction open at all times through the work area. Between the hours of 9:OOam and 3:OOpm, requirement is one (1) lane in each direction. 1VO:Q1 Agreement No. 6574 Naslr Street., El Se tuido Boulevard to Arwood W Maintain one (1) lane of traffic in each direction open at all times through the work area. Nadi Street: AlAvood Way_tc�Inyeritl Hi 1 Maintain two (2) lanes of traffic in the southbound direction and (1) lane in the northbound direction open at all times through the work area Douglas Street: Rosecrans AN, rauac to El SeaundomBoulevard Maintain one (1) lane of traffic in each direction open at all times through the work area, l.�oL r� Street: El Segundo Boulevard to Imperial Hi 1hwa Maintain two (2) lanes of traffic in each direction open at all times through the work area. Douglas Street microsurfacing work shall be done on Saturday. En.d.:..of-dav Traffic Larry Requirements Unless specified or approved by the City Engineer, the full width of the traveled way on all roads shall be open for use by public traffic after each working day and all day on Saturday, Sunday, any day designated by the Agency as a holiday, and on the day preceding an Agency -designated holiday. S c rr ncitrg Restrictigis No more than two (2) corners of a single intersection shall be inaccessible at any time for curb ramp reconstruction. The following items of work shall not be concurrent to minimize public inconvenience: Cold milling and ARHM overlay of El Segundo Boulevard Cold milling and ARHM overlay of Nash Street Slurry seal surfacing of Douglas Street `ontractorLL NgiEniem and Enw to ee Vehicle Parkin Contractor's equipment and personal vehicles of the Contractor's employees shall not be parked on the traveled way, or on any section where traffic is restricted at any time. Overnight parking of construction equipment on adjacent roads is not permitted. 1-6. ROAD CLOSURES Road closures are not allowed unless approved in advance by the City Engineer. If approved, a detour plan and advance public notice will be required. 1-7. DRIVEWAY ACCESS The project includes driveway reconstruction in front of 250 Nash Street. This driveway is the only vehicular access to the property. The Contractor shall comply with the conditions outlined in the Permit to Enter and Construct (PTEC). The PTEC will be obtained by the City. V-A-5 Agreement No. 6574 1-8. PEDESTRIAN ACCESS Pedestrian access shall be maintained at all times. Traffic control signs shall not obstruct the path of travel along sidewalks. Where work is required along sidewalks, place pedestrian detour signage conforming with the requirements of the CA MUTCD. Maintain access to Metro C Line (Green Line) stations at all times, including between bus stops and station entrances. The project includes curb ramp reconstruction in front of the Metro C Line (Green Line) El Segundo Station at the El Segundo Boulevard and Nash Street, northeast corner. Ramp reconstruction will take place within Metro property. The Contractor shall comply with the conditions outlined in the Permit to Enter and Construct (PTEC). The PTEC will be obtained by the City. 1-9. BUS STOP COORDINATION Notify transit agencies prior to starting work that impacts bus stops. See Appendix A for contact infonnation and details. 2-0, LJTILITY FACI1XFIE 2-1. SCOPE Work shall conform to the provisions in Part 4 "Existing Improvements," of the Standard Specifications and these Special Provisions. Except as otherwise included in these Special Provisions, it will be the responsibility of the owner of these facilities to relocate their facilities or adjust to grade. The Contractor shall provide access to utility owners at all times during the construction life of the project. The Contractor shall coordinate work by others in accordance with Section 2-4, "Cooperation and Collateral Work" and Section 402-6 "Cooperation" of the Standard Specifications. 2-2. EXISTING UTILITIES A list of utility companies in the project vicinity and contact information are included in Appendix. Prior to any excavations activities (such as excavation, filling, resurfacing, paving, etc) the Contractor shall call Underground Service Alert (811 or 1-800-227-2600) and contact the respective utility companies at least two working days prior to starting any work on which those companies are affected. USA member utilities will locate and / or obtain "ties" on their substructure facilities in the construction area. 2-3. PROTECTION OF UTILITY POLES Existing power, telephone and utility poles shown on the plans that are not labeled to be removed by either the Contractor or others shall remain in place and remain in service at all times and shall be protected at all times. V-A-6 Agreement No. 6574 Contractor shall not operate equipment under any utility lines with less than 18 feet of vertical clearance from the overhead line to the ground. Contractor shall place traffic barriers to restrict construction traffic movement between the utility poles with the nonstandard clearance. Proposed power, telephone, and utility poles shown on the plans as work by others shall be installed by others and connected with power, telephone, cable TV, and other cables, wires, and underground conduits during construction of this project. These power, telephone, and utility poles and their connecting cables, wires, and underground conduits shall be protected at all times. 3-0. CLEARING AND G1W1 13INQ The Contractor shall perform Clearing and Grubbing in accordance with 300-1, "Clearing and Grubbing," of the Standard Specifications. Clearing and Grubbing shall include removal of existing vegetation and organics from all cut and fill areas, eradication of all weeds in the roadway, median, and parkway within 5 feet of the limits of grading as shown on the plans, removal of vegetation, and cleaning shoulders from any sloughing dirt as identified to be removed within the limits of construction. Eradication of vegetation shall include cutting and treatment of the root with an EPA -approved herbicide. Use only enough herbicide to properly treat roots. Clearing and Grubbing shall include removing and disposing of all existing facilities including but not limited to trees with trunk diameter of 6 inches or smaller, signs, posts, footings, trash and debris and any other objects within the right-of-way in conflict with the proposed construction or identified for removal. Depressions and disturbed areas left from removals shall be replaced and compact with fill. Roots shall be removed within a 10-foot radius of the existing tree. Existing trees not in conflict with the proposed construction (i.e.) greater than 5 feet from the limits of grading or edge of pavement), or specifically identified on the plans to be preserved and protected, shall be preserved and protected at all times. If any such trees are damaged, they shall be replaced in kind with the same type and size and maintained until established as directed by the Engineer at the Contractor's own expense. 4-0. EXISTING FACILITIES 4-1. GENERAL Performing work on existing facilities will conform to provisions of Standard Specifications and these Special Provisions. Make arrangements for and dispose of the removed facilities in accordance with the Construction and Demolition Debris Management Plan. 4-2. REMOVE EXISTING TREE Removal of existing tree shall conform to these Special Provisions and include the removal of canopy, branches, and trunk. V-A-7 Agreement No. 6574 4-3. REMOVE EXISTING ASPHALT CONCRETE FACILITIES The Contractor shall sawcut and remove in accordance with all Federal, State, and local laws, existing asphalt concrete (AC) pavement as shown on plans to be removed in accordance with Section 401-2, "Asphalt Concrete Pavement" of the Standard Specifications and these Special Provisions. 4-4. REMOVE EXISTING CONCRETE FACILITIES Removal of existing concrete facilities shall conform to provisions of Section 401-3 "Concrete and Masonry Improvements" of the Standard Specifications. 4-5. REMOVE EXISTING CATCH BASIN Removal of existing catch basin shall conform to provisions of Section 300-1 "Subgrade Preparation, Treated Materials, and Placement of Base Materials," and Section 401-3 "Concrete and Masonry hmprovements" of the Standard Specifications. 4-6. MANHOLE, VAULT COVER, AND VALVE COVER ADJUSTMENT Contractor shall complete all City -owned manhole, vault cover, and valve cover frame and cover set adjustments to the new finished grades in accordance with Section 403, "Manhole Adjustment and Reconstruction" of the Standard Specifications. Buried manholes, vault covers, and valve covers shall be located with metal detectors prior to grinding, and the appropriate agencies informed by the Contractor's superintendent. The Contractor shall coordinate with all applicable utility companies prior to cold milling and paving activities for the possibility of adjusting manhole, vault, and valve covers during paving activities. The remaining utility companies shall be notified of the Contractor's schedule by the Contractor's superintendent in order to allow for raising of their manhole covers, vault covers, and valve covers immediately after paving is completed. The Contractor shall be responsible for furnishing, placing, and maintaining barricades and lights, and installing temporary asphalt ramping as necessary to protect the public from danger due to the work being performed. Facilities shall be lowered to milling surface grade before milling operations. After milling operations, lowered facilities shall be adjusted to finished grade. The Contractor shall snake arrangement with owner of utility facility for adjustment of utility manhole frame and cover sets. Adjust Manhole to Gradc In areas where the existing pavement is to be capped with an asphalt overlay, and where the manhole structure meets the following criteria: * The manholes are either flush with the existing pavement, or Agreement No. 6574 The manholes project less than two inches above the A.C. surface prior to capping. These manholes shall be paved over and later adjusted to grade as specified herein. Before replacing frames and covers, the Contractor shall clean the frames and covers of residual debris from new and old pavement or surface treatments. Asphalt concrete used for paving around manhole shall be Type C2-PG 64-10 (1/2" sieve size) with 5.6 percent binder. Adjust Water Valve Cover to Grade This item shall specifically include adjusting of water valve cover to the grade after completion of the overlay or reconstruction, in accordance with Section 403 "Manhole Adjustment and Reconstruction" of the Standard Specifications, except as modified supplemented herein. The term "Valve Cover" shall be interpreted as including the sleeve, frame and cover set for City water valves. City -owned valve covers shall be adjusted to grade in a similar manner to manholes. After the pavement has been completed, the necessary portions of the pavement and base shall be neatly removed, and the valve cover shall be adjusted to the new finished grade as specified in Section 403 of the Standard Specifications. Los Angeles CountSanitation District Manhole Covers, When applicable that County Sanitation Districts (CSD) manhole covers must be adjusted to new grade because of re -grading and/or resurfacing over the manholes, the work will be done by CSD in conjunction with the Contractor responsible for the re- grading and/or resurfacing work pursuant to the following procedures: 1) The Contractor shall notify CSD's superintendent of Maintenance at per Appendix A: Utility Contact Information a minimum of three (3) working days prior to the start of any work involving CSD manhole covers. 2) If grade over manhole cover is to be lowered: a. The Contractor shall furnish and deliver a temporary steel plate of adequate thickness and size approved by CSD for the manhole. b. The Contractor shall excavate around the manhole to a depth and distance outside of the manhole as required for CSD to remove the manhole frame and cover. c. CSD will remove the manhole frame and cover and the interfering portion of the manhole shaft and place the cover plate over the manhole. d. The Contractor shall store and protect the frame and cover and fill and/or pave over the cover plate to final grade. V-A-9 Agreement No. 6574 e. The Contractor shall remove the pavement and/or fill as required for CSD to raise the manhole cover to final grade. Pavement and/or fill shall be removed to a minimum depth of not less than 6 inches below final grade and 12 inches around the manhole if the cover plate is more than 6 inches below final grade. f. CSD will raise the manhole cover and set the frame and cover to final grade. g. The Contractor shall backfill and compact and complete the pavement around the manhole cover. 3) If grade over manhole cover is to be raised: a. The Contractor shall fill and/or pave directly over the manhole frame and cover to final grade. b. Repeat steps e. through g. of Item 2 above except when grade is to be raised more than 2 feet. In such case, the Contractor shall excavate around the manhole to a depth and distance as determined by and required by CSD to remove and reconstruct the manhole shaft with the required taper. 4-7. FIRE HYDRANT RELOCATION Contractor shall relocate fire hydrants per City Water Standard Plans and Specifications. Relocate fire hydrant per Section 212 "Water and Sewer System Valves and Appurtenances" and Section 306-8 "Prefabricated Pressure Pipe" of the Standard Specifications. Disinfect and test relocated facilities per Section 306-8.9 "Pipeline Pressure Testing, Disinfection, and Commissioning" of the Standard Specifications. 5-0. COLD MILLING Cold milling shall conform to provisions of Section 404, "Cold Milling" of the Standard Specifications. 6-0. UNCLASSIFIED EXCAVATION AND FILL ON -SITE 6-1. SCOPE Complete unclassified excavation for the roadway improvements and place excavated material as fill in accordance with the requirements of 300-2, "Unclassified Excavation," and 300-4, "Unclassified Fill," of the Standard Specifications and these Special Provisions. 6-2. CONSTRUCTION REQUIREMENTS The exposed subgrade shall be reviewed by the Agency's Geotechnical Engineer for the presence of unsuitable materials. Removal and disposal of unsuitable materials shall V-A-10 Agreement No. 6574 be at the Engineer's direction and will be paid for as Unclassified Excavation and Fill On -Site specified in these Special Provisions. The finished subgrade surface exposed after excavation shall be scarified to a depth of 12 inches, moisture conditioned to within 0 to 2 percent of optimum moisture, and compacted to a relative compaction of at least 90 percent (i.e. 90 percent of the maximum dry density determined by ASTM D1557). Subgrade fill shall be free of organics, oversize rock (greater than 3 inches in diameter), trash, debris, and other deleterious or unsuitable materials, and shall have an expansion index less than 20 and a minimum R value of 15. Materials generated during excavation and grading in pavement areas are generally anticipated to consist of a mixture of fine grained and coarse -grained soil materials derived from onsite fill and alluvial materials. Material derived from the site excavation can be used as subgrade as long as those materials satisfy criteria presented above for subgrade fill. Imported subgrade fill materials shall comply with recommendations for subgrade fill or as appropriate for its intended use. Imported fill shall be reviewed by the Agency's geotechnical engineer prior to being transported to the site. Fill materials shall be spread evenly, with loose lifts no thicker than 8 inches, and shall be thoroughly blade mixed during spreading to provide relative uniformity of material within each layer. Soft or yielding materials shall be removed and replaced with properly compacted fill material prior to placing the next layer. Fill material placed up to 1 foot below the pavement section shall be compacted to a relative compaction of at least 90 percent of the maximum dry density determined from ASTM D1557, latest edition. Subgrade fill materials placed within 1 foot of the pavement section shall be compacted to a relative compaction of at least 95 percent of the maximum dry density. As compacted moisture contents for subgrade fill materials shall be within 0 to 2 percent of the optimum moisture as determined from ASTM D1557. 6-3. SAND Sand shall conform to the provisions of 200-1.5.3, "Sand for Portland Cement Concrete", of the Standard Specifications and these Special Provisions. Sand shall be placed to the dimensions shown on the plans and in accordance with the requirements of Section 300, "Earthwork," of the Standard Specifications, and these Special Provisions. Place without compaction. 6-4. NONWOVEN GEOTEXTILE Nonwoven geotextile shall conform to the provisions of Section 213, "Engineering Geosynthetics", of the Standard Specifications and these Special Provisions. Nonwoven geotextile shall be minimum Type 90 N. Nonwoven geotextile shall be placed in accordance with the requirements of Section V-A- I I Agreement No. 6574 300, "Earthwork," of the Standard Specifications, and these Special Provisions, 6-5. RELOCATED ROCKS Top of rocks shall not block inlet or outlet inverts. 74 CRUSHED D M...� �_ �"11S"fLl 1�OUS BASE Crushed miscellaneous base shall conform to the provisions of 200-2.4, "Crushed Miscellaneous Base," of the Standard Specifications and these Special Provisions. The material grading shall be either coarse or fine, at the option of the Contractor. Changes from one grading to another shall not be made during the progress of work, unless permitted by the Engineer. Crushed miscellaneous base shall be placed to the dimensions shown on the plans and in accordance with the requirements of Section 301, "Subgrade Preparation, Treated Materials, and Placement of Base Materials," of the Standard Specifications, and these Special Provisions. 8-0. CEMENTSTABILIZED PULVERIZED BASE Cement stabilized pulverized base (CSPB) shall conform to provisions of Section 301- 3, "Portland Cement Treated Materials" of the Standard Specifications. Cement stabilize and compact the pulverized base material to at least 92 percent of the maximum dry density (ASTM D 1557) to obtain a cement -treated mix with a minimum of 400 psi unconfined compressive strength. The contractor shall perform micro -cracking on the cement treated base prior to Asphalt Concrete paving. 9-0. ASPHALT CONCRETE Asphalt Concrete shall confonn to provisions of Section 203-6, "Asphalt Concrete," and Section 302-5, "Asphalt Concrete Pavement" of the Standard Specifications and these Special Provisions. All work covered by this specification shall follow the Standard Specifications. 9-1. MATERIALS Asphalt concrete base course shall be Class B-PG 64-10. Asphalt concrete surface course shall be Class C2-PG 64-10. Tack coat shall be applied to the sawcut portion prior to placing new asphalt concrete pavement. 9-2. EXECUTION V-A-12 Agreement No. 6574 Lao ut The Contractor shall layout and mark the location of the edges of the paving passes of the surface course to match the new layout of the lane lines. The layout shall be made at least 24 hours prior to paving. The layout will be done in such a way as to not leave any longitudinal paving joints at the end of each day. The layout shall be approved by the Engineer prior to paving. If the striping is to remain unchanged, the edges of the paving passes shall conform to existing lane edges. In all cases where practical, each lane shall be paved in a single pass. In tapered transition areas, the shoulder areas shall be paved first, then the through lane shall be hotlapped immediately after the shoulder paving. For paving which incorporates new quarterpoints or gradebreaks due to keycuts or other conditions, the Contractor shall provide equipment capable of adjusting to the new surface profile at the appropriate locations. The profile adjustments shall be within twelve inches of the actual quarterpoint or gradebreak. The Contractor shall take sufficient measurements during laydown to assure that the full design asphalt concrete layer depth is provided at each quarterpoint, gradebreak, or transition. Failure to provide the design depth at these areas will result in rejection of the work. Correction of this rejected work will include milling out the new asphalt concrete from the road edge to the centerline or nearest inside lane line and repaving. The minimum length of the milled and corrected area shall be fifty feet. Tolerances„ The finished asphalt concrete surface shall be flush with, to 1/4 inch (0.02 feet or 6 mm) above the gutter lips. The finished pavement surface shall not be lower than the gutter lips. The average pavement thickness shall be equal to the specified thickness for the project. The minimum allowable thickness will be 1/4 inch less than that specified. The provisions of Section 302-5.6.2 shall apply and shall be modified to provide that the straightedge shall be 12 foot in length. After final paving has been installed and compacted, spray water over the entire paved area. Correct any areas where water collects or ponds. Rollin Rollers shall be self-propelled and shall be equipped with a system that prevents AC from sticking to the wheels. A parting agent may be used if it does not damage the AC or impede the bonding of layers. Do not use petroleum products such as kerosene or diesel fuel to release AC from trucks, spreaders, or compactors. Breakdown rolling shall commence when the asphalt concrete is placed. Rolling shall V-A-13 Agreement No. 6574 be accomplished with the drive wheel forward and with the advance and return passes in the same line. From the second paragraph of Section 302-5.6.2 "Density and Smoothness" to the end shall be deleted and replaced by the following: Sublots to determine compaction testing shall be based on the following: 1. Each 750 tons, or part thereof, placed on an individual street in a paving day. If over 750 tons are placed in a single paving day on an individual street, up to 150 tons over 750 tons can be moved in to the previous 750 ton sublot. 2. If multiple streets are paved in a day, each street will be considered its own sublot with multiple sublots on streets where greater than 750 tons are placed. The in -place density shall be between 92.0 percent and 97.0 percent of maximum theoretical unit weight. Compaction testing will be detennined by cores in accordance with California Test 308, Method A. Three cores will be sampled per sublot. The average of the three cores will be used to determine compaction for the sublot. Cores will be located by the engineer using random sampling charts in California Test Method 356. The contractor- will submit cores, properly labeled, to the engineer for testing. Cores shall be 4 or 6 inches in diameter and must be sampled and tested within 24 hours of paving. Contractor shall backfrll cores with hot mix AC the same day cores are taken. The Engineer will calculate the percent of Theoretical Maximum Density to the nearest 0.1 percent for each calibrated nuclear gauge density reading or each core by dividing the in -place density by the Theoretical Maximum Density and multiplying by 100 percent. The mean percent of Theoretical Maximum Density will be used by the Engineer to determine compliance with the specification for each lot. If the percent of Theoretical Maximum Density does not comply with the specifications, the Engineer will accept the asphalt concrete compaction and take a payment deduction or not accept the lot as shown in the following table: V-A-14 Agreement No. 6574 Reduced Payment Factors for Percent of Maximum Theoretical Density _W......AC_ m Reduced.. ............... AC Reduced duced Percent of Payment Percent of Payment Maximum Factor Maximum Factor Theoretical Theoretical Density Density �_�_. �............._�. 0.0000 �...... 91.9 6....... �_.......-0..m0125 �.�97.:1 0.0125........mm�, 0.0250 97.2 0.0250 1.8 .............. . . C 91.7 0.0375 97.3 0.0375 91.6 0.0500 97.4 0.0500 91.6 0.0500 9.7.w.4..�.�.�.� .._� � ........_�__. 0.0625 91.4 0.0750 ..............�� .�._.................................,,,,,m- 97.6 0.0750 ............... ......._.,. _..__.....,..........._... ...7 0.0875 91.2 0.1000 97.8 0.1000 91.1 ..............._..-m0.1125 ..........-97.9 0.1125....�.�.�.� -��91.0 0�W1250mm� 98.0......___.. 0�- 0.1250 90.9 1375 98.1 0.1375 90.8 0.1500 98.2 0.1500 90.7 �.......�.�.�....� .........0.1625 9.8........�.�, 0.16�__............ 25 ..e _....._mm _.._.......... 90.6....0.1750..........98.4 ............_- 1750 .mm. 90.5 0.1875 ..,...�.....9.g.w.�.........� 0.187.5............... 90.4...............__......_, 0.2000 98.6ITITITITITITIT...._ 0.2000 90 .2125 98.7 0.2125 mmmmmITITIT 90.2 0.2250 98.8 0.2250 1 0.2375 98.9 0.2375 90.0 _...........-0. _. 9�.�0............... 0.2500............ .�._........�90�0Remove...&........A. ....................._. Remove & Replace Replacmemmm The Contractor shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. Hand torches shall be available for rework of areas which have cooled. After compaction, the surface texture of all hand work areas shall match the surface texture of the machine placed mat. Any course or segregated areas shall be corrected immediately upon discovery. Failure to immediately address these areas shall cause suspension of asphalt concrete placement until the areas are satisfactorily addressed, unless otherwise allowed by the Engineer. The Contractor shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. V-A-15 Agreement No. 6574 Hand torches shall be available for rework of areas which have cooled. After coin xaction, the Sara trace texture of all hand work areasmm shall match the surface texture of the machine placed mat. Any c atas or segregated areas shall be corrected, immediately -upon disco ery. Failure to immediately addresstheseareas shall caatse a s eatsionmm_of ma pliaaltt concrete placement „until the areas are_satisfactorily a4dressed. unless otherwise allowed by th_e Engineer. Connections with Existing Pavement Where new paving joins existing paving, chip the existing surfaces 12 inches back from the joint line so that there will be sufficient depth to provide a minimum of 1 inch of asphalt concrete. Dispose of waste material offsite. Tack chipped areas prior to placing the asphalt concrete. Meet lines shall be straight and the edges vertical. Paint the edges of meet line cuts with liquid asphalt or emulsified asphalt prior to placing asphalt concrete. After placing the asphalt concrete, seal the meet line by painting with a liquid asphalt or emulsified asphalt and then immediately cover with clean, dry sand. Surface Tolerance Finished grade shall not deviate more than 0.02 foot in elevation from the grade indicated in the drawings. Slopes shall not vary more than 1 /4 inch in 10 feet from the slopes shown in the drawings. Section 302-9.5 is hereby modified as follows: A vibratory roller shall be used for initial breakdown rolling. The initial breakdown rolling shall be completed before the asphalt -rubber hot mix temperature falls below 275' Fahrenheit measured immediately in front of the roller. Pneumatic rollers shall not be used. The CONTRACTOR shall provide sufficient rollers to assure complete compaction before the mixture reaches 160' Fahrenheit. If the CONTRACTOR at any time fails to meet this criteria, placement of additional asphalt concrete shall be suspended until compaction is completed on the material previously placed. Breakdown rolling shall commence when the asphalt concrete is placed. Rolling shall be accomplished with the drive wheel forward and with the advance and return passes in the same line. From the second paragraph of Section 302-5.6.2 "Density and Smoothness" to the end shall be deleted and replaced by the following: Sublots to determine compaction testing shall be based on the following: 1. Each 750 tons, or part thereof, placed on an individual street in a paving day. If over 750 tons are placed in a single paving day on an individual street, up to 150 tons over 750 tons can be moved in to the previous 750 ton sublot. 2. If multiple streets are paved in a day, each street will be considered its own sublot with multiple sublots on streets where greater than 750 tons are placed. The in -place density shall be between 92.0 percent and 97.0 percent of maximum theoretical unit weight. Compaction testing will be determined by cores in accordance with California Test 308, Method A. Three cores will be sampled per sublot. The V-A-16 Agreement No. 6574 average of the three cores will be used to determine compaction for the sublot. Cores will be located by the engineer using random sampling charts in California Test Method 356. The contractor will submit cores, properly labeled, to the engineer for testing. Cores shall be 4 or 6 inches in diameter and must be sampled and tested within 24 hours of paving. Contractor shall backfill cores with hot mix AC the same day cores are taken. For the percent of maximum theoretical density, the following table shall apply to deductions for average compaction of a sublot: Reduced Payment Factors for Percent of Maximum Theoretical Density _....................... ........... mm-., . AC Reduced AC Reduced Percent of Payment Percent of Payment Maximum Factor Maximum Factor Theoretical Theoretical Density Density __ _ .....�_ 92.0 ....... ............ 0.0000 97.0 ...._ 0.0000 91.9 0.0125 97.1 .... 0.01. 0.0250 _ ................_ 97.3 0.0375 � 91.6 0.050097.4 0.500................ 0 w..._ 90.0625 ..._......... _w......._..................._� ___ . 97.5 0.0625 .............._91.4 0.0750uuuuuuu 97.6 0.0750 91.3 0.0875 97.7 ...... _97- 0.0875 w ..__-.. 91.2 0000 8 ................. 0 ......0.1125 91.1 9 Om ...... 97..9 ...._ 91.0 _.. 0.1250 98.0 0.1250 ................ .............5 90.9 0.1375 98.1 1375 0.1500 98.2 ��- ----0.1625 ������ 0.1500 90.7 98.3 0.16....__�.__ 25 90.6 ___... 0.1750 98.4 0.1750 .. 1875 98.5 _....�.� 0.1875 .�.................._. 90.4 ............ . _ 020 00 98.6 .............._... 0.2000 .................. _................._. 90.3 0.2125 98.7 .9.8..8........................._. 0.2125 90.2........................0.2250 0.2250 98.9 0.2375 ---...---.. _ ._... 90.0 0.2500 99.0 0.2500 <90.0 Remove & Remove & Replace Replace The CONTRACTOR shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. V-A-17 Agreement No. 6574 Hand torches shall be available for rework of areas which have cooled After compaction, the surface texture of all hand work areas shall match the surface texture of the machine placed mat. Any course or segregated areas shall be corrected immediately upon discovery. Failure to immediately address these areas shall cause suspension of asphalt concrete placement until the areas are satisfactorily addressed, unless otherwise allowed by the Engineer. The Contractor shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. Hand torches shall be available for rework of areas which have cooled. After compaction, the surface texture of all hand work areas shall match the surface texture of the machine placed mat. Any course or segregated areas shall be corrected immediately upon discovery. Failure to immediately address these areas shall cause suspension of asphalt concrete placement until the areas are satisfactorily addressed, unless otherwise allowed by the Engineer. The Engineer may sample the asphalt concrete from the truck bed, windrow, hopper for the spreading machine, or the mat at various intervals. The Contractor shall facilitate the sampling process. Intersections Where asphalt concrete overlay work is required on a through street at an intersection without a concrete cross gutter, the overlay on the cross street shall extend to the ECR return where a keycut will be made transverse to the cross street as noted on the Plan or as directed by the City Inspector. Transverse keycuts shall be completed from curb to curb or gutter to gutter as applicable. Cold Joints Cold joints shall be saw -cut or vertical grind prior to the placement of new material. Pavement shall be removed to clean, straight lines by saw -cutting in straight lines either parallel to the curb or at right angles to the alignment of the sidewalk. Teninorary Transitions The Contractor shall construct temporary pavement transitions at all, paving joints greater than 1 inch prior to allowing traffic onto the paved surface. This includes both longitudinal and transverse paving joints. Temporary pavement transitions shall have a slope of 20:1 or as approved by the engineer and be constructed on Kraft paper or other suitable bond breaker such that upon removal of the temporary pavement transition, a clean notch remains. The temporary transitions may be constructed of either cold mix or hot mix. V-A-18 Agreement No. 6574 The Contractor shall continuously maintain the temporary pavement until final paving. Each temporary transition shall be inspected by the Contractor and repaired as necessary to comply with these provisions at the end of each day including weekends and holidays. Test Stri a The Contractor shall demonstrate that their equipment and operation can achieve the required density on a test strip not less than 200-foot long and 12-foot wide in accordance with California Test 375 prior to receiving notice to proceed with paving. The Contractor is responsible for the quality control process necessary to achieve the required density. Test strip section shall be minimum ARHM (2.5" thick) over AC (2.5" thick) over base. Test strip shall be located in a location as approved by the Engineer. The in -place density of the test strip shall be between 92.0 percent and 97.0 percent of maximum theoretical unit weight. The Engineer will evaluate compaction using cores in accordance with California Test 308, Method A. Three cores will be sampled per sublot. The average of the three cores will be used to detennine compaction for the sublot. Allow 3 business days for evaluation of a test strip. If a test strip is not authorized, submit a plan for changes to your materials, methods, or equipment. Allow 3 business days for authorization of the plan. Construct another test strip under the authorized plan. Remove test strips that are not authorized. Do not proceed with asphalt concrete pavement or asphalt rubber hot mix activities until the Engineer informs you that the test strip is authorized. 10-0. ASPHALT RUBBER 11OT MIX 10-1, SCOPE Asphalt rubber hot mix (ARHM) shall conform to provisions of Section 203-11, "Asphalt Rubber Hot Mix (ARHM)" and Section 302-9 "Asphalt Rubber Hot Mix (ARHM)" of the Standard Specifications except as modified herein. 10-2. MATERIALS 2hAjj_F jndcr The asphalt binder base stock prior to blending shall be PG 64-10. ARHM Mixtures The ARHM mixture shall be ARHM-GG-D and shall comply with Section 203-11.3 "Composition and Grading" of the standard specifications with the following V-A-19 Agreement No. 6574 exceptions: 1. Air Voids % California Test 367 target and be produced in the range of 2.5 to 5.5. 2. For design and production, Hveem stability shall be a 23 min. 3. VMA for design and production shall be between 18.0% and 23.0%. The crumb rubber used on the project must originate and be manufactured in California. Asphalt rubber binder shall utilize both scrap tire and natural rubber and shall comply with the requirements set forth in Subsection 203-6.7 of the Standard Specification. Job -Mix Formula 1. Mix Design The mix design shall be performed by the asphalt rubber supplier or an approved laboratory and shall be used as the basis for determining the job -mix formula. The design method used shall be in accordance with Caltrans Hveem mix design methodology. The mixture design shall be submitted to the Engineer at least 10 days prior to construction. Based on information contained in the mixture design, the engineer shall approve a job -mix formula with the following tolerances allowed for single tests on aggregate gradation and asphalt -rubber binder content: JOB MIX TOLERANCE Sieve Size _................��............��.............w.��.... I Percent Tolerance 3/8 +/- 5 , No......��.......w ___ ............. No.30, No.40 � _.... +/- 5 No. 200 m._...�.�.�.�.�_.._....�.� 3 ... Asphalt-RubberWBinder Content .......... +/ 0 5 The mix design shall include sufficient test results and documentation to assure that all requirements for the aggregate and the asphalt -rubber binder are fulfilled. TSR to be minimum 70 in accordance with Caltrans Test Methods 371. 2. Job -Mix Formula The mix design shall recommend the job -mix formula and shall list the following information: 3. Aggregate o source and identification (for each material used) o aggregate quality tests o gradation (for each material used) o blend percentage o mixture gradation 4. Asphalt -Rubber o source and grade of asphalt cement V-A-20 Agreement No. 6574 o source and type of extender oil or modifier o source and identification of ground rubber o ground rubber percentage for the asphalt -rubber binder o type and amount of additive(s), if required o temperature when added to aggregate o Recommended asphalt -rubber binder content by both weight of total mix and weight of dry aggregate. o Recommended mixture production temperature. o Recommended lay down temperatures. o Compacted Unit Weight. Proportionjig Subsections 203-6.5.1 and 203-6.5.2 shall be modified by adding the following paragraph: Proportioning shall be performed using an automatic batching system, and the proportioning device shall be automatic to the extent that the only manual operation required for proportioning all rnaterials shall be a single operation of a switch or starter. Miscellaneous Requiieineiits Subsection 203-6.8 shall be modified as follows: Asphalt -rubber binder shall be at a temperature not less than 375' Fahrenheit when added to aggregate. The temperature of the aggregate shall not be less than 325' Fahrenheit at the time of adding the asphalt -rubber binder. 10-3. CONSTRUCTION General ARHM shall conform to the specifications for Subsection 302-9 except as modified herein. Asphalt -rubber hot mix shall consist of one or more courses of an asphalt -rubber binder and graded aggregate as herein specified placed upon a prepared roadbed or base or over existing pavement. The courses shall be of the type of mixture and the dimensions shown on the Plans or Specifications. The paving shall be performed in such a way as to not leave any longitudinal paving joints at the end of each day's operation. Transverse paving joints of the surface course and leveling course shall be at least 1 feet apart. Distribution S rcadillg Section 302-5.5 of the Standard Specifications is hereby modified as follows: At the time of delivery to the work site, the temperature of ARHM shall be between 310' Fahrenheit and 350' Fahrenheit. The ambient air temperature and pavement temperature shall be a minimum of 60°F at the time of spreading and distribution. V-A-21 Agreement No. 6574 Layout The Contractor shall layout and mark the location of the edges of the paving passes of the surface course to match the new layout of the lane lines. The layout shall be made at least 24 hours prior to paving. The layout will be done in such a way as to not leave any longitudinal paving joints at the end of each day. The layout shall be approved by the Engineer prior to paving. If the striping is to remain unchanged, the edges of the paving passes shall conform to existing lane edges. In all cases where practical, each lane shall be paved in a single pass. In tapered transition areas, the shoulder areas shall be paved first, then the through lane shall be hotlapped immediately after the shoulder paving. For paving which incorporates new quarterpoints or gradebreaks due to keycuts or other conditions, the Contractor shall provide equipment capable of adjusting to the new surface profile at the appropriate locations. The profile adjustments shall be within twelve inches of the actual quarterpoint or gradebreak. The Contractor shall take sufficient measurements during laydown to assure that the full design asphalt concrete layer depth is provided at each quarterpoint, gradebreak, or transition. Failure to provide the design depth at these areas will result in rejection of the work. Correction of this rejected work will include milling out the new asphalt concrete from the road edge to the centerline or nearest inside lane line and repaving. The minimum length of the milled and corrected area shall be fifty feet. Tolerances The finished asphalt concrete surface shall be flush with, to 1/4 inch (0.02 feet or 6 mm) above the gutter lips. The finished pavement surface shall not be lower than the gutter lips. The average pavement thickness shall be equal to the specified thickness for the project. The minimum allowable thickness will be 1/4 inch less than that specified. The provisions of Section 302-5.6.2 shall apply and shall be modified to provide that the straightedge shall be 12 foot in length. Rolling Rollers shall be self-propelled and shall be equipped with a system that prevents AC from sticking to the wheels. A parting agent may be used if it does not damage the AC or impede the bonding of layers. Do not use petroleum products such as kerosene or diesel fuel to release HMA from trucks, spreaders, or compactors. Section 302-9.4 is hereby modified as follows: A vibratory roller shall be used for initial breakdown rolling. The initial breakdown rolling shall be completed before the asphalt -rubber hot mix temperature falls V-A-22 Agreement No. 6574 below 275' Fahrenheit measured immediately in front of the roller. Pneumatic rollers shall not be used. The CONTRACTOR shall provide sufficient rollers to assure complete compaction before the mixture reaches 160' Fahrenheit. If the CONTRACTOR at any time fails to meet this criteria, placement of additional asphalt concrete shall be suspended until compaction is completed on the material previously placed. Breakdown rolling shall commence when the asphalt concrete is placed. Rolling shall be accomplished with the drive wheel forward and with the advance and return passes in the same line. From the second paragraph of Section 302-5.6.2 "Density and Smoothness" to the end shall be deleted and replaced by the following: Sublots to determine compaction testing shall be based on the following: 3. Each 750 tons, or part thereof, placed on an individual street in a paving day. If over 750 tons are placed in a single paving day on an individual street, up to 150 tons over 750 tons can be moved in to the previous 750 ton sublot. 4. If multiple streets are paved in a day, each street will be considered its own sublot with multiple sublots on streets where greater than 750 tons are placed. The in -place density shall be between 92.0 percent and 97.0 percent of maximum theoretical unit weight. Compaction testing will be determined by cores in accordance with California Test 308, Method A. Three cores will be sampled per sublot. The average of the three cores will be used to determine compaction for the sublot. Cores will be located by the engineer using random sampling charts in California Test Method 356. The contractor will submit cores, properly labeled, to the engineer for testing. Cores shall be 4 or 6 inches in diameter and must be sampled and tested within 24 hours of paving. Contractor shall backfill cores with hot mix AC the same day cores are taken. The Engineer will calculate the percent of Theoretical Maximum Density to the nearest 0.1 percent for each calibrated nuclear gauge density reading or each core by dividing the in -place density by the Theoretical Maximum Density and multiplying by 100 percent. The mean percent of Theoretical Maximum Density will be used by the Engineer to determine compliance with the specification for each lot. If the percent of Theoretical Maximum Density does not comply with the specifications, the Engineer will accept the asphalt concrete compaction and take a payment deduction or not accept the lot as shown in the following table: V-A-23 Agreement No. 6574 Reduced Payment Factors for Percent of Maximum Theoretical Density ARHM Reduced............w..� ARHM.�...............Reduced Percent of Payment Percent of Payment Maximum Factor Maximum Factor Theoretical Theoretical Density Density 91.9 �. 0.0125 _�.......0.0250 97.1 0.0125 91..wu8 �97.2 � 0.0250 ........�... � ...........�.. .................��....�m� �........................................... 0.0375 .. 97.3 .�.............9 .0375 91.6_ 0.0500 97.4 0.0500 91.5 0.0625 97.5 0.0625 91.4 .....���.....����.1� 0.0750 ..............0 97.6 - 0.0750 3 .. ....w 0875 ._ ��.. .�.�.w.�...........� . 0.0875.�............_ 91.2 �.. 0.1000 97.8 0.1000 �....._.. 91.1...._�....� 0.1125 97.9 0.1125 �... 91.0 250 ...... 98.0 0.1250 90.9 01375 981 0.1375 90.8 ..._._. 0.1500 98.2 0.1500 90w 7 0.1625 98.3 0.1625 90.6 mmm _.... 0.1750 98.4 90.5 0.1875� m�....�...�........__.98.6 98.5 _0.1750 0.1875 _.........�.0.200.._... 90.4 0.2000 90.3 ................�...90.2-_...�..........�0.2250 125 98.7 0.2125 0. .�.�........9.g..,.8 0.225.0....�...... ..__.��9.0............ 375 90.0 ....98.9_.. _0.2375 ... ......0.2500...9..9.0 R& .0.25.��00 Remove & �...� Ra Replace The Contractor shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. Hand torches shall be available for rework of areas which have cooled. After compaction, the surface texture of all hand work areas shall match the surface texture of the machine placed mat. Any course or segregated areas shall be corrected immediately upon discovery. Failure to immediately address these areas shall cause suspension of asphalt concrete placement until the areas are satisfactorily addressed, unless otherwise allowed by the Engineer. The Contractor shall have hand -compaction equipment immediately available for compacting all areas inaccessible to rollers. Hand -compaction shall be performed concurrently with breakdown rolling. If for any reason hand -compaction falls behind breakdown rolling, further placement of asphalt concrete shall be suspended until hand - compaction is caught up. Hand -compaction includes vibraplates and hand tampers. V-A-24 Agreement No. 6574 Hand torches shall be available for rework of areas which have cooled. After compaction, the surface texture of all hand work areas shall match the surface texture of the machine placed mat. Any course or segregated areas shall be corrected immediately upon discovery. Failure to immediately address these areas shall cause suspension of asphalt concrete placement until the areas are satisfactorily addressed, unless otherwise allowed by the Engineer. :rnDlin The Engineer may sample the asphalt concrete from the truck bed, windrow, hopper for the spreading machine, or the mat at various intervals. The Contractor shall facilitate the sampling process. Rock Dust Blotter A rock dust blotter will be required and shall be applied in accordance with Section 302-9.6 at a rate of approximately three pounds per square yard. The cost of this application will be borne by the Contractor. Cold Joints Cold joints shall be saw -cut or vertical grind prior to the placement of new material. Pavement shall be removed to clean, straight lines by saw -cutting in straight lines either parallel to the curb or at right angles to the alignment of the sidewalk. m, orary Transitions The Contractor shall construct temporary pavement transitions at all paving joints greater than 1 inch prior to allowing traffic onto the paved surface. This includes both longitudinal and transverse paving joints. Temporary pavement transitions shall have a slope of 20:1 or as approved by the engineer and be constructed on Kraft paper or other suitable bond breaker such that upon removal of the temporary pavement transition, a clean notch remains. The temporary transitions may be constructed of either cold mix or hot mix. The Contractor shall continuously maintain the temporary pavement until final paving. Each temporary transition shall be inspected by the Contractor and repaired as necessary to comply with these provisions at the end of each day including weekends and holidays. 11-0. MICROSURFACING Microsurfacing material and construction shall conform to the provisions of Section 302-3, "Microsurfacing" of the Standard Specifications. Microsurfacing shall be Type II over existing pavement. Replace the third paragraph of to Section 302-3.9, "Pavement Surface Preparation" with the following: V-A-25 Agreement No. 6574 Manhole covers, utility vaults, in -street flashers, and the surfaces of other utility facilities, survey monuments and benchmarks within the area of application shall be covered using plastic or oil resistant construction paper secured by tape or adhesive to the facility being covered. The covering shall result in no adherence of the surfacing to the improvement and no stripping of the surfacing from the adjacent pavement. Reference the covered facilities with enough control points to re -locate the facilities after the application of the surfacing. Add the following to Section 302-3.41, "General": All trucks which the Contractor proposes to use that exceed the legal load limit when loaded will be required to have overweight permits from the agency having jurisdiction. Licensed weighmaster's certificates shall be furnished by the Contractor at no cost to the Agency. 12-0. CONCRETE CONSTRUCTION 12-1. CURB, GUTTER, CROSS GUTTER, CURB RAMP, SIDEWALK, DRIVEWAY, PARKWAY DRAIN Concrete material and construction shall conform to the provisions of Section 201-1, "Portland Cement Concrete," and Section 303-5, "Concrete Curbs, Walks, Gutters, Cross Gutters, Alley Intersections, Access Ramps, and Driveways" of the Standard Specifications. Reinforcement shall conform to the provisions of Section 201-2 "Reinforcement for Concrete" of the Standard Specifications. 12-2. CONCRETE PAVEMENT Concrete pavement shall conform to the provisions of Section 201-1, "Portland Cement Concrete," and Section 302-6, "Portland Cement Concrete Pavement" of the Standard Specifications. 12-3. STAMPED CONCRETE Stamped concrete shall conform to the provisions of Section 303-6, "Stamped Concrete" of the Standard Specifications. Stamped concrete adjacent to cycle track shall be "Small Sandstone" pattern by Bomanite, or approved equal. 12-4. COLORED CONCRETE Colored concrete shall conform to the provisions of Section 303-7, "Colored Concrete" of the Standard Specifications. Colored concrete shall be produced by Method B (Integral Color).Parkway and median maintenance strip concrete shall match existing coloring in El Segundo Boulevard median east of the Aviation Boulevard intersection. Colored concrete parkway adjacent to cycle track shall use Direct Colors GRY-105-1 or approved equal. V-A-26 Agreement No. 6574 12-5. STAMPED AND COLORED CONCRETE TEST PANELS Contractor shall construct one test panel for stamped and colored sidewalk concrete and one test panel for stamped and colored median concrete. Test panels shall conform to the provisions of Section 51-1.011)(2)(c), "Test Panels", of the State Standard Specifications. Test panels must be at least 4 feet by 4 feet by 4 inches deep. 12-6. DETECTABLE WARNING SURFACE Detectable warning surface shall conform to the provisions of Section 73-1.0213 "Detectable Warning Surfaces", 73-3.01C "Submittals", and 73-3.011)(2) "Warranties" of the State Standard Specifications. Color shall be yellow, except for bicycle ramp location, where color shall be black. Install a cast -in -place (i.e. embedded) detectable warning surface on a new/replaced curb ramp under the manufacturer's instructions. Do not texture or grout the grooved area and detectable warning surface on a curb ramp. Install a prefabricated detectable warning surface on an existing curb ramp under the manufacturer's instructions. 12-7. CONCRETE SEALANT Concrete sealant shall conform to the provisions of ASTM C 1315. 13-0. DRAINAGE CONSTRUCTION 13-1. INSTALL REINFORCED CONCRETE PIPE Install Reinforced Concrete Pipe shall conform to provisions in Section 207-2, "Reinforced Concrete Pipe" and Section 306, "Open Trench Conduit Construction" of the Standard Specifications and these Special Provisions. RCP size and class are per plan. Pipe bedding shall conform to Los Angeles County Department of Public Works Standard Plan 3080-2. All work necessary for any given length of pipe placed, including excavation, bedding, pipe placement and backfrll shall be accomplished during the same workday. The Contractor shall submit to the Engineer, for approval in accordance with the provisions of 3-8 "Submittals," the design and working drawings of the bracing proposed by the Contractor for use. The working drawings of the bracing shall show complete details and construction method and materials and substantiating structural design calculations. Approval by the Engineer of the bracing drawings or bracing inspection, performed by the Engineer, will in no way relieve Contractor of full responsibility for adequacy of the bracing. Payment for all temporary resurfacing by the Contractor or ordered to be placed by the Engineer, including that used to maintain the temporary resurfacing until the permanent resurfacing is placed, will be considered to be included within the contract item for V-A-27 Agreement No. 6574 which excavation was performed, and no additional compensation will be allowed. The construction of the RCP shall include the connection to the existing RCP. The Contractor's attention is directed to the probability of encountering surface water during installation of the pipe. The Contractor shall reroute surface water as required. In no case will surface water be allowed to come into contact with wet concrete. Concrete collar shall conform to Sections 201-1 and 303-1 of the Standard Specifications. 13-2. DRAINAGE GRATE Drainage grates shall conform to Sections 206 and 304 of the Standard Specifications Grates shall be bicycle safe, with 4" maximum transverse bar spacing. e )lace ralj � ilatc Contractor shall verify field dimensions prior to ordering grates. Contractor shall repair or replace metal with damaged galvanized surfaces at no additional cost to the Owner. 13-3. CATCH BASIN Concrete material and construction shall conform to the provisions of Section 201-1, "Portland Cement Concrete," Section 206, "Miscellaneous Metal" and Section 303-1, "Concrete Structures" of the Standard Specifications. The Contractor's attention is directed to the probability of encountering surface water during installation of the catch basin. The Contractor shall reroute surface water as required. In no case will surface water be allowed to come into contact with wet concrete. Dr,ainaa ! .Jjllet Marker Drainage Inlet Markers shall conforata to the provisions of Section 70-5.05 of the State Standard Specifications. Place Install Drainage Inlet Marker (Prefabricated Thermoplastic) per Caltrans Standard Plan D71 to the concrete tops of all newly catch basins. Lettering shall say "NO DUMPING DRAINS TO OCEAN". Graphic design for drainage inlet marker shall be approved by the Engineer prior to application. Connector Pipe Screen Connector Pipe Screen shall be an approved product as listed on the California State Water Resource Control Board's latest "Certified Full Capture System Trash Treatment Control Devices". The contractor's attention is directed to: lit tps://ww vITwaterboai.-ds ca_gr�y/water issues/�)ro i-ain;s/stoi°aniwatpll( cs/tr•asLijMI.L nte.ntatio�n/eg lfkaed l s lcv a elist 161µ6202,1.pcl V-A-28 Agreement No. 6574 Install per manufacturer's directions. C01i'll ctor Pi , ep Screen 'aimed Gaya le Paint gauge markings inside catch basin with connector pipe screen. Paint shall confonn to the provisions of sections 210 and 310 of the Standard Specifications. Painted gauge markings shall be visible from the manhole lid when open, or from the curb opening when automatic retractable screen is not used. 14-0. PAVEMENT DELINEATION ANDSTRIPING 14-1. SCOPE Pavement Delineation and Striping shall consist of installing thermoplastic striping and markings, delineators, and pavement markers. On roads to be delineated, prior to removing traffic control, temporary markings shall be placed. The Contractor shall replace any damaged pavement delineation, without cost to the Agency, prior to the Agency's acceptance of the project. 14-2. REMOVAL OF EXISTING TRAFFIC STRIPING AND PAVEMENT MARKINGS Removal of existing traffic striping and pavement markings shall conform to provision of Section 84-9, "Existing Markings" of the State Standard Specifications. Any existing striping (including raised pavement markers) or pavement legends which conflict with the approved striping plan shall be removed by wet sandblasting or grinding. Any grinding of pavement marking shall be done to a square or rectangular block shape. Any pavement or surfacing, in the opinion of the City, that has been unreasonably damaged, shall be repaired to the City's satisfaction at no expense to the city. Any debris shall be removed before end of each workday. No blackout will be allowed. 14-3. PAVEMENT MARKERS Pavement Markers shall be placed in accordance with Section 81-3 "Pavement Markers," SSP A20A through A20D of the State Standard Specifications and these Special Provisions. Markers shall be placed in the same pattern and locations as previously existed or modified as shown on the Plans and these Special Provisions. Pavement markers shall include placement of blue fire hydrant pavement markers. The Contractor shall replace any damaged Pavement Markers, without cost to the Agency, prior to the Agency's acceptance of the project. 14-4. THERMOPLASTIC TRAFFIC STRIPING AND PAVEMENT MARKINGS Thermoplastic Traffic Striping and Pavement Markings shall be minimum 90 mils in V-A-29 Agreement No. 6574 thickness and shall conform to the provisions of 84-2 of the State Standard Specifications, State Standard Plans, and these Special Provisions. Striping and markings shall be reapplied in the original pattern on all roads, except as shown on the Plans and as specified herein. Ckeen Pa'\,enient Nlai-ldn Green pavement markings shall be preformed thermoplastic. Color will be measured according to ASTM E 1347 and must fall within the following color coordinates listed: _. —...................... 2 3 4 y._ v .. x _ Y X.. .... ... .. x � 0.266 0 460 0.367wwww 0.480 0 367 0.583 0 230 0.714 .........._.. Clean and prime surfaces prior to installing marking. The pattern of the green -colored pavement shall match the pattern of the dotted lines, thus filling in only the areas that are directly between a pair of dotted line segments. Green pavement markings shall be applied prior to white markings or traffic stripes. 15-0. SIGNAGE 15-1. GENERAL REQUIREMENTS This work shall consist of providing traffic signs and relocating existing signs as shown on plans, per these Special Provisions and in accordance with the California Manual of Uniform Traffic Control Devices, State Standard Plans, State Standard Specifications, and City Standard Plan ST-17 "Concrete Blockout for Street Sign Posts". 15-2. TRAFFIC SIGNS Traffic signs shall be constructed in accordance with Section 82, "Signs and Markers," of the State Standard Specifications. Mast arm signs shall be located immediately to the right of the outermost signal head using the strap and saddle method. Signs to be relocated shall be installed on new posts. Remove any posts where all signs are removed. Existing signs at locations shown on the plans to be removed shall be removed, salvaged, and delivered to the City yard. Existing signs shall not be removed until replacement signs have been installed or until the existing signs are no longer required for the direction of public traffic, unless otherwise directed by the Engineer. Sign posts shall be perforated square steel tube posts. 16-0. SlJORINQ AND BRACING Pursuant to the provisions of California Labor Code Section 6707, each bid submitted V-A-30 Agreement No. 6574 in response to this Invitation to Bid shall contain, as a bid item, adequate sheeting, shoring, and bracing, or equivalent method for protection of life and limb in trenches and open excavation, which shall conform to applicable safety orders. 17-0. LANDSCAPE PLANTING 17-1. GENERAL REQUIREMENTS Scope The work of this section includes all labor, materials and equipment required to complete work indicated on the plans. The work shall be performed in accordance with the best standards of practice relating to the various trades, and will be under the continuous supervision of a competent foreman, capable of interpreting the plans and these specifications. All work of every description mentioned in the specifications and/or amendments thereto, and all other labor and materials that are reasonably incidental to the satisfactory completion of the work, including site clean-up. Bidders are expected to visit the site to familiarize themselves with existing conditions. The Contractor shall adequately protect the work, adjacent property, and the public; he shall be responsible for any damage, injury or loss due to his actions or lack of action. All of the provisions of the general and special conditions and any subsequent addenda shall apply to this section as though written full herein. Submittals Submit shop drawings and other items in accordance with the General Provisions. Work schedule. Materials list noting product (generic) name and supplier. Submit plant materials list and supplier's name, address, and phone number to Owner's Representative within 30 calendar days of award of contract, giving evidence that Contractor has source for specified plant materials. Submit pictures, specifications, and nursery name of each individual new tree and shrubs for approval prior to arrival on site. Guarantees/written certifications. 111sl)ections Inspections will be made by the Engineer. The Contractor shall be on the site when inspections are made. Request inspection by telephone at least two (2) working days in advance of date desired. If the work is not ready for inspection when the inspector arrives, the Contractor shall pay for the inspector's visit. V-A-31 Agreement No. 6574 Inspection is required for the following: 1. Upon completion of grading and soil conditioning, prior to planting 2. When trees and shrubs are delivered to the site. 3. When trees and shrubs are spotted for planting, but before planting holes are excavated. 4. When planting and all other specified work, except the maintenance period, has been completed. 5. At end of maintenance period. Guarantee All trees shall be guaranteed for a period of ninety (90) calendar days. All guarantee periods commence from the time of final acceptance by the Engineer. As soon as weather permits, replace all dead trees and all trees not in vigorous condition, as noted during the maintenance period. Trees used for replacements shall be the same kind and size as originally planted. They shall be furnished, planted and fertilized as specified and guaranteed. Procedures All sprinkler work shall be inspected and approved prior to the start of any work in this section. Prior to excavation for planting or placing of stakes, locate electric cables, conduits, sprinkler lines, heads, valves and valve control wires, and all utility facilities so that proper precautions may be taken not to damage such improvements. In the event of a conflict between such lines and plant locations, promptly notify the Landscape Architect who shall arrange for relocation for one or the other. Failure to follow this procedure places responsibility upon the Contractor for any and all repairs for damages incurred as a result. Trees and shrubs shall be furnished in the quantities and/or spacing as shown or noted for each location, and shall be of the species, kinds, sizes, etc. as symbolized on the plans. Any tree list has been prepared by the Landscape Architect as a convenience to the Contractor and no responsibility for its accuracy is assumed; the Landscape Contractor must verify all sizes and quantities. All scaled dimensions are approximate. Before proceeding with any work, the Contractor shall carefully check and verify all dimensions and quantities and shall immediately inform the Landscape Architect and City of any discrepancy between the plans and/or specifications and the actual conditions. No work shall be done in any area where there is such a discrepancy until approval for same has been given by the Landscape Architect and City. Certification Prior to job acceptance, written certifications shall be submitted to the Engineer for the following: V-A-32 Agreement No. 6574 Quantity and quality of commercial fertilizer and organic fertilizer. Quantity and quality of all soil amendments called for by plans and specifications. 17-2. MATERIALS The Contractor shall use the soil preparation and backfill mix as designated on the plans for bid purposes. Staking and guying materials shall per details on the plan. All new trees shall receive root barriers per the root barrier details. Plant Materials Plant materials indicated on the plans and herein specified shall conform to the following: l . Pea -gravel shall be washed free of loam, sand, clay and other foreign materials. 2. Tree stakes shall be 2-inch diameter Lodge Pole Pine free of knot holes and of the defects. 3. Plant protectors shall be '/z-inch (Min.) diameter rubber or plastic hose of uniform color, material and size, and cut to required lengths in order to retain trees to stakes and to protect plant sterns, trunks and branches from damage by guying. No wires shall be placed inside hoses around the tree trunk or branches (V.I.T. or equal). 4. Root barriers shall be UB 12-2 Deeproot panels from Deeproot Corp. or equal. Condition: Trees shall be symmetrical, typical for variety and species, sound, healthy, vigorous and free from disease and insect pests or their eggs. They shall have healthy, normal root systems (well filling their containers, but not to the point of being root bound). Trees shall not be pruned prior to delivery, except as authorized by the Landscape Architect or his representative. In no case shall trees be topped before delivery. Inspection: All Trees shall be subject to the inspection and approval of the Engineer before planting on the project site. Substitutions: Substitutions for the indicated trees will be permitted provided the substitute trees are approved in advance by the Engineer, and the substitutions are made at no additional cost to the City. Except for the variations so authorized, all substitute trees shall conform to the requirements of these specifications. Deconnigsed Granite Decomposed granite shall conform to provisions of Section 20-5.03D, "Decomposed Granite" of the State Standard Specifications. Agreement No. 6574 17-3. INSTALLATION (SITE, GRADE) 1'�41�t�A° Site tJIT��a���.�tce All planting areas shall be cleared of all debris including rocks over one & one-half (1- 1/2) inches in diameter and clumps of earth that will not break after finished grades have been established. All planting areas shall have all noxious weed removed whenever they are found at any stage of the work. It is understood that the Contractor shall accept the conditions of the site upon submittal of bid, except where extensive sub -grade obstruction of native rock or debris by others is encountered. Finish Grade Do not work the soil when moisture content is so great that excessive compaction will occur, nor when it is so dry that dust will form or clods will not readily break up. Remove and dispose of all soil in planting areas that contain any deleterious substance, such as plaster, concrete, gasoline, solvents, etc. Remove the soil to a minimum depth of six (6) inches or to the level of dryness in the affected areas. The affected soil shall be replaced with native or imported soil as required. If the area to be landscaped is not acceptable to the Contractor, he shall notify the Engineer in writing. Prior to finish grading, loosen all planting areas to a depth of eight (6) inches (to allow for addition of soil conditioners). Make minor grade adjustments as directed by the Engineer. Where designed drainage meets an obstruction, warp grades so that no water collects. Use water trucks and sprinklers as required to control all airborne dust caused by grading operations. Finish -grade all planting areas to a smooth and even condition, making certain that no irregularities remain. Remove and dispose of all foreign materials, clods and rocks over one & one-half (1-1/2) inches in diameter within three (3) inches of the surface. Provide that grade which, after conditioning and planting, is two & one-half (2-1/2) inches below the tops of curbs and walks, sloping to drain to adjacent roadway, drain swale or catch basin. Finish -grade shall conform plus or minus one tenth (1/10) of one (1) foot to the finish grading plan and shall be inspected and approved by the Engineer prior to any soil conditioning or planting operations. 'soil Coeditionkig Certification in writing from the Contractor stating that the amendments as specified V-A-34 Agreement No. 6574 have been installed, shall be required. Certification must be submitted to the Engineer before planting operations start. 17-4. INSTALLATION (PLANTING) General Planing, No planting shall be done until final grades have been established, the planting areas have been properly graded and prepared as herein specified and approved by the Engineer. All operations in conjunction with the installation of the sprinkler system that are below grade or in trenches shall have been completed before planting as well. The relative position of all trees is subject to approval by the Engineer. They shall, if necessary, be relocated as direct as part of the contract. All trees shall be removed from their container and set so that when settled, they bear the same relation to the required grade that they bore to the natural grade before being transplanted. Each tree shall be planted in the center of the hole and backfilled unless otherwise specified, with the prepared soil. No soil in muddy condition shall be used for backfilling. No filling will be permitted around trunks or stems. All broken or frayed roots shall be properly cut off. The Engineer shall supervise the placing and planting of all trees. In the event that underground construction work or obstructions are encountered in the planting operation, alternate locations for trees will be selected by the Engineer; operation will be done at no extra cost to the City. PlantinL, of Trees and Shrubs Position plants in plant locations indicated on plans and secure approval before excavating holes, making necessary adjustments as indicated. All holes for trees shall be dug round, with bottoms level. Compacted soil at sides and bottoms shall be loosened by scarifying or other approved method. Holes shall be backfilled with "prepared soil" to the required grade, and the balance of the pit filled with "prepared soil", thoroughly settled by water application. Size of holes shall be per detail on plan. Prepare depressed water basin as wide as plant balls at each plant. Water thoroughly, backfilling any voids with additional prepared planting mix. Care ail" Plants Before e nd DUring Planting, Plants shall not be allowed to dry out before or while being planted. Keep exposed roots moist by means of wet sawdust, peat moss, or burlap at all times during planting operations. Wilted trees, whether in place or not, will not be accepted and shall be replaced at the Contractor's expense. '4�!'ajg.E �rni �.s. Construct a firmly compacted mound of soil around each plant to form a watering basin V-A-35 Agreement No. 6574 at the edge of and following the shape of the planting holes area. Mounds for trees shall be at least four (4) inches high. Any settlement within the basins after watering shall be refilled to the required grade with prepared soil, and additional nitrogen stabilized sawdust worked into the surface as required to restore the mulched condition. StakiII�g aI %Llyi� oi�C act:* Stake or guy trees as detailed on the plans. Alterations or eliminations must be approved by the Engineer 1 Immediately after planting, water should be applied to each plant by means of a hose. The water shall be applied in a moderate stream in the planting holes, until the material around the roots is completely saturated from the bottom of the hole to the top of the ground and apply water in sufficient quantities and as often as seasonal conditions require, to keep the ground wet well below the root system of the trees at all times. 17-5. MAINTENANCE Maintenance work shall consist of applying water, weeding, caring for trees, and performing the following final tree establishment work: The maintenance period shall be ninety (90) calendar days. This shall commence at the time that all of the work has been completed to the satisfaction of the Engineer, and the Contractor has been notified of such in writing. If the above and following conditions are not complied with, the Contractor will maintain the areas until acceptable to the Engineer. During the maintenance periods, all trees and planted areas shall be kept well -watered and weed free at all times. The entire project shall be so cared for that a neat and clean condition will be presented at all times to the satisfaction of the Engineer. Make two (2) applications of 16-6-8 at the rate of six (6) pounds per one thousand (1,000) square feet applied on a monthly basis. The first application should be made approximately thirty (30) calendar days after planting. Prior to final acceptance, the Contractor shall make sure that all staking is intact and loose enough not to cause girdling of the tree for at least a six (6) month period. The Contractor shall maintain a sufficient number of staff and adequate equipment to perform the work herein specified and from the time all tree planting is done until the end of the maintenance period. Damage to the planting areas shall be replaced immediately. Depressions caused by vehicles, bicycles or foot traffic to be filled with topsoil and leveled. Replant damaged trees. V-A-3 6 Agreement No. 6574 Natural Bermuda grass will be sprayed with a chemical weed killer as soon as the new shoots emerge. Applications shall be per manufacturer's recommendations. No monofilament line -type grass trimmers (i.e. "weedeaters", etc.) shall be used at the base of any tree or tree stake at any time. All trees shall be healthy, pest free, and have vital signs of new growth at the end of the plant establishment period. l iia] Ix�:5j2 ctwon For Ac,c.c ga.I..c Inspection of the work will be made by the Engineer at the request of the Contractor to detennine acceptability of the work following the maintenance period. Written Notice At the end of the specified maintenance period, the Contractor shall present written notice to the City that he has completed the required maintenance, and that any further maintenance will be the responsibility of the City. Clca- rt-fop,. Upon completion of work, the Contractor shall remove all equipment, material and debris resulting from his work from the site. 18-0. LANDSCAPING IRRIGATION SYSTEM 18-1. SCOPE Work under this Section includes all irrigation improvements indicated on the plans, including but not limited to the following: All irrigation components shown on the plans, including irrigation mainline, laterals and stubs, sleeves, drip irrigation, bubblers, root zone watering systems, tees, ells, nipples, automatic valves in rectangular valve boxes, automatic controllers, backflow device, master valve, flow sensor, gate valves, quick couplers, and any additional miscellaneous piping, fittings, etc. required to complete the systems such that all landscape areas are adequately supplied with water. Work under this section included all new Irrigation improvements as follows: 1. The work consists of furnishing labor, tools, machinery, materials, and processes required to complete the sprinkler system, installed ready for use without further cost in labor or materials to the Owner. 2. When not otherwise specified, workmanship and material shall conform to the local plumbing code. 3. The Contractor shall apply for all necessary pen -nits and pay for same. 4. The Contractor shall keep the premises clean and free of excess equipment, materials and rubbish incidental to this work. 5. The intent of the plans and specifications is to indicate and specify a complete irrigation system, installed and ready for use without further cost in labor or V-A-3 7 Agreement No. 6574 materials to the City as well as retrofit of the sprinkler system of each affected private property lot. Any item shown or written on the plans or in these specifications shall be considered to appear on both. In the event of "conflict" between the plans and specifications, the Engineer shall be consulted although the contractor is being made aware that there are no as-builts available for the private properties. Therefore, the contractor will have to provide exploration, investigation, rerouting of mainline, capping of the system, new sprinklers, valves, wiring and hookup to the private property lot. The contractor shall be responsible to assure that each adjacent lot irrigation system remains in working order during all phases of construction for any work affected by the project. Unless otherwise noted, it is assumed that each lot is on a stand-alone automated system and is in working order. Prior to submission of his bid, the Contractor shall examine the site, the complete plans of the project and the specifications of same, in addition to the plans and specifications for the sprinkler irrigation portion of the work. Reference Svecilucations and Standards The intent of the plans and specifications is to graphically indicate and specify a complete and efficient sprinkler irrigation system for the City of El Segundo. Plot dimensions are approximate. Contractor shall carefully check and verify all dimensions and shall report any variations to the Engineer. Due to the scale of the plans, it is not possible to indicate all offsets, fittings, etc. which may be required. Contractor shall carefully investigate the structural and finished conditions affecting all his work, and plan his work accordingly. Plans are generally diagrammatic and indicative of the work to be installed. The work shall be installed in the most direct and workmanlike manner, so that conflicts between sprinkler systems, planting and architectural features will be avoided. Engineer shall decide all questions relative to the quality of workmanship and materials furnished. The Engineer shall decide all questions relating to the "interpretation" of the plans and specifications and the acceptable fulfillment of the contract. &a.ded �V ater Fwd ities Install recycled water facilities per West Basin Municipal Water District's Standard Drawings RW3, RW6, and RW7. The following items are based on the Los Angeles County Department of Public Health (LACDPH) Environmental Health Guidelines for Pipeline Construction and Installation — for the Safe Use of Recycled / Reclaimed Wastewater. Recycled / reclaimed wastewater systems shall be constructed in compliance with applicable potable water system construction standards as well as those specified in the "Purple Book", California health laws related to recycled water, (California Health and V-A-3 8 Agreement No. 6574 Safety Code, Water Code, Titles 22 and 17 of the California Code Of Regulations) and the Los Angeles County Code (LACC), Title 28 - Plumbing, Appendix J. PRELIMINARY REQUIREMENTS Plans and specifications for recycled / reclaimed wastewater distribution systems, as well as the use and operation of such systems shall be submitted to the LACPDH for review and approval prior to construction or implementation. Prior to commencing construction, the Contractor shall contact the LACPDH to schedule an inspection of the proposed on -site recycled / reclaimed and potable water work. No piping for potable or recycled / reclaimed water in conjunction with a specified project shall be installed prior to plan check approval and preliminary inspection. Upon completion of construction, no excavation or open trench may be backfilled without first securing the LACPDH approval. Any areas backfilled without prior approval will be required to be exposed and corrected as necessary. Only a LACPDH approved temporary water connection, to a potable water supply via a dedicated, approved, reduced -pressure -principal backflow prevention device shall be permitted to be utilized for the purpose of flushing, pressure testing, construction, landscape use or the final cross -connection testing. SEPARATION REQUIREMENTS The maximum attainable separation of recycled / reclaimed wastewater lines and potable water lines shall be enforced in order to minimize potential risks associated with pipeline breaks resulting in infiltration of wastewater from leaking wastewater lines into domestic water lines, or accidental cross -connections between recycled wastewater and potable water systems. Parallel Construction: A horizontal separation of at least ten feet (10') shall be required between pressurized, buried, recycled / reclaimed and potable water piping (all distance to be measured from pipeline outside diameter). Cross -Over Construction: Buried potable water pipes crossing over pressurized recycled / reclaimed water pipes shall be laid not less than twelve inches (12") above the reclaimed water pipes. Reclaimed water pipes laid in the same trench or crossing - over building sewer or drainage piping shall be installed in compliance with the LACC - Title 28, Plumbing, Sections 609.0 and 720.0. Unused or Abandoned Potable Water Lines: These lines are to be severed as close to water mains as practical, capped, and ten -foot (10') section of abandoned line removed and cemented under direct supervision by the LACPDH. Existing On -site Piping: Maximum separation of recycled / reclaimed wastewater lines and potable water lines shall be maintained upon system additions or modification. V-A-39 Agreement No. 6574 All recycled / reclaimed water pipe materials, valves and fittings shall conforlil to the requirements of the LACC - Title 28, Plumbing, Sections 604.0, 605.0 and 606.0. All recycled / reclaimed wastewater lines (pressure / non -pressure), valve boxes, hydrants and appurtenances shall be identified to clearly distinguish between recycled / reclaimed wastewater, non -potable and potable water systems (as specified in LACC - Title 28, Plumbing, Appendix J). Recycled / Reclaimed Wastewater: All buried, recycled, wastewater systems (pressure / non -pressure) shall utilize purple pipe with black uppercase lettering "CAUTION: RECYCLED WATER - DO NOT DRINK" printed on opposite sides of the pipe. For limited application, the use of continuous lettering on three inch (3") minimum width purple tape with one inch black or white contrasting uppercase lettering "CAUTION RECYCLED WATER - DO NOT DRINK" permanently affixed at intervals not to exceed five feet, atop all horizontal piping, laterals and mains. Identification tape shall extend to all valve boxes and / or vaults, exposed piping, hydrants and quick couplers. All valves, except fixture supply control valves shall be equipped with a locking feature. All mechanical equipment that is appurtenant to the recycled / reclaimed water system shall be painted purple. Potable Water: All potable water lines shall be installed in accordance with the Uniform Plumbing Code and all other applicable potable water system construction standards. All buried potable water lines shall be clearly identified by continuous lettering on three inch (3") minimum width blue tape with one inch (1") white lettering bearing the repeated wording "POTABLE WATER" permanently affixed at ten -foot intervals atop all horizontal piping, laterals and mains. Identification tape shall extend to all valve boxes and / or vaults, exposed piping and hydrants. Identification tape is not necessary for extruded colored PVC with continuous wording "POTABLE WATER" printed in contrasting lettering on opposite sides of the pipe. Non -Potable Water: All non -potable irrigation / industrial water lines (pressure / non - pressure) shall be identified by continuous lettering on three-inch (3") minimum width tape with one inch (1") contrasting lettering bearing the continuous uppercase lettering "NON -POTABLE WATER - DO NOT DRINK" permanently affixed at ten foot (10') intervals atop all horizontal piping, laterals and mains. Identification tape shall extend to all valve boxes and / or vaults, exposed piping, hydrants and quick couplers. Exposed piping, valve boxes, vaults, control valves, quick coupling valves, outlets and related appurtenances shall be color -coded and labeled / tagged to differentiate between recycled / reclaimed wastewater, potable water and non -potable water systems. Tags identifying recycled / reclaimed water shall have the appropriate identification on both sides (wording on one side and symbol on the opposite side). THE SAFE USE OF RECYCLED / RECLAIMED WATER PROTECTS POTABLE WATER Deteriorated or inadequately protected well water casings shall be repaired or replaced to protect aquifers against contamination from recycled / reclaimed wastewater systems. V-A-40 Agreement No. 6574 An On -Site Water Supervisor shall be appointed, having the responsibility of oversight for the protection of the potable water system (provided for under Title 17, Section 7586, and California Code of Regulations). The name and position of the On -Site Water Supervisor shall be reported to the water purveyor and to the LACPDH. This position will be responsible for the installation, operation and maintenance of the recycled / reclaimed wastewater and potable water systems; authorization of any piping changes or additions to either the potable or recycled systems; prevention of potential hazards; implementation of the regulations; and coordination with the Cross -Connection Program of the water purveyor and of the LACPDH. Hose bibbs shall not be permitted in any areas of public access to recycled / reclaimed wastewater systems, to prevent unauthorized use of recycled wastewater. Quick - couplers are permitted in lieu of hose-bibb outlets but shall only be connected to recycled / reclaimed wastewater lines. Hose bibs may be permitted in areas that are not accessible to the public, provided they are properly identified with permanently affixed tags, labels, or plates with uppercase lettering "RECYCLED WATER - DO NOT DRINK" in English. The use of recycled / reclaimed wastewater for irrigation purposes shall minimize exposure of the wastewater spray to drinking fountains and picnic tables through selective location of equipment and by appropriate irrigation system design. Additionally, the following measures should be taken: recycled wastewater spraying shall be done during hours of least public exposure; any area where recycled wastewater is released, used or impounded should be posted, informing the public that recycled water is being used; and irrigation practices utilizing recycled water shall be controlled to prevent surface runoff. BACKFLOW PROTECTION There shall be no interconnection between a potable water system and a recycled / reclaimed water system within the user's premises. A dye or pressure test shall be utilized to confirm the physical separation of a recycled wastewater system and a potable water system. Testing shall be performed in conjunction with the Water Purveyor and the LACPDH and conducted before the introduction of recycled wastewater. An approved backflow prevention device shall be installed at the potable water service connection. In a recycled / reclaimed wastewater distribution system, a backflow prevention device may be required at the recycled wastewater meter or at specific on -site locations where said use could degrade the quality of the recycled wastewater supply 18-2. SUBMITTALS Submit shop drawings in accordance with the General Provisions. Submit schedule including coordination of electrical and water connections and the placement of materials and equipment. V-A-41 Agreement No. 6574 Submit material list using the following format (double spaced between each item): ...._w �� Item No Description �� m 1 Manufacturer Model No, 1 Pressure supply lines Lasco Schedule 40 2 1 Remove control valve Rain -bird i 100-PEB-PRS-D i etc. Submit shop drawings of fabricated components and installations. 18-3. SUBSTITUTIONS Contractor shall furnish the articles, equipment, materials, or processes specified by name in the plans and specifications. No substitution will be allowed without prior written approval by the Engineer. Equipment or materials installed or furnished without the prior approval of the Engineer may be rejected and the Contractor is required to remove such materials from the site at his own expense. Approval of any item, alternate or substitute until all operations in conjunction with the installation of the sprinkler system have been completed indicates only that the product(s) apparently meet the requirements of the plans and specifications on the basis of the information submitted. Manufacturer's warranties shall not relieve the Contractor of his liability under the guarantee. Such warranty shall only supplement the guarantee. The Engineer/City can, at his option, require a manufacturer's warranty on any product offered for use. 18-4. IRRIGATION GUARANTEE The entire irrigation system within the affected scope of work area shall be unconditionally guaranteed by the Contractor as to material and workmanship, including settling of back -filled areas below grade for a period of ninety (90) calendar days following the date of final acceptance of work. If, within ninety (90) calendar days from the date of completion, settlement occurs and adjustments in pipes, valves and root zone watering systems is necessary to bring the system to the proper level of the permanent grades, the Contractor, as part of the work under his contract, shall make all adjustments without cost to the City, including the complete restoration of all damaged planting, paving, or other improvements of any kind. Should any operational difficulties develop in connection with the irrigation system within the specified guarantee period which, in the opinion of the City, may be due to inferior material and/or workmanship, said difficulties shall be immediately corrected V-A-42 Agreement No. 6574 by the Contractor to the satisfaction of the City at no additional cost to the City, including any and all other damage caused by such defects. 18-5. EXISTING UTILITIES AND OTHER FACILITIES The Contractor shall locate and mark lines, valves, and other underground utilities, etc., prior to excavating trenches. The Contractor shall be held responsible for any damage to existing utilities or existing private lot property due to their negligence. Extreme care shall be taken by the Contractor when excavating or working in these areas and coordination and cooperation with other Contractor is required as the work progresses to these areas. The Contractor shall insure that any affected irrigation is kept in working order outside the scope of work area, if affected by work done within the scope of work area. 18-6. RECORD DRAWINGS Locations on plans are diagrammatic and approximate only and shall be changed and adjusted as necessary or as directed to meet existing conditions and to follow the intent of the plans and specifications in obtaining complete water coverage. It is, therefore, the Contractor's responsibility to record any changes as to location of equipment on "as -built" plans for the project areas. Procedure for "as -built" preparation shall be: 1. Obtain from the Engineer one (1) set of reproducible plans. Record accurately on this set all changes in the work constituting departures from the original contract plans. 2. Dimension from two permanent points of reference (buildings, monuments sidewalks, curbs, pavement, etc.). Post information on "as -built" plans, day-to- day, as the project is installed. All dimensions noted on plans shall be one - quarter (1/4) inch in size. Show dimensional locations and depths of the following: 1. Point of connection 2. Routing of irrigation pressure lines (dimension maximum of one -hundred (100) feet along routing and all directional changes) 3. Gate valves 4. Irrigation control valves 5. Quick coupling valves 6. Routing of control valves 7. Other related equipment (as may be directed by the Engineer) Maintain "as -built" plans on site at all times. 18-7. CONTROLLER CHARTS "As -built" plans shall be approved by the Engineer before the controller charts are prepared. Provide one controller chart of the maximum size controller door will allow, for each V-A-43 Agreement No. 6574 controller supplied, showing the area covered by automatic controller. The chart shall be a reduction of the actual "as -built" system drawing. If the controller sequence is not legible when the drawing is reduced, enlarge it to a size that will be readable when reduced. Chart shall be black line print and a different pastel color used to show area of coverage for each station. When completed and approved, hermetically seal the chart between two pieces of plastic, each piece being a minimum twenty (20) mil thickness. Charts shall be completed and approved prior to final inspection of the irrigation system. 18-8. OPERATION AND MAINTENANCE MANUALS Prepare and deliver to the Owner within ten (10) calendar days prior to completion of construction, all required and necessary descriptive material in complete detail and sufficient quantity, properly prepared in four individually bound copies. Describe the material installed in sufficient detail to permit operating personnel to understand, operate and maintain all equipment. Include spare parts list and related manufacturer information for each equipment item installed. Each manual shall include the following: 1. Index sheet stating Subcontractor's address and telephone number. 2. Duration of guarantee period. 3. List of equipment with names and addresses of manufacturer's local representatives. 4. Complete operating and maintenance instructions on all major equipment. In addition to the maintenance manuals, provide the maintenance personnel with instructions for major equipment and show written evidence at the end of the project that this service has been rendered. Provide the following tools as part of this Contract: 1. Two sets of keys for each controller cabinet. 2. Two couplers for quick coupler valves. 3. Two loose keys for quick coupler valve covers.. 18-9. MATERIALS All irrigation materials shall conform to the requirements of Section 800-2, "Irrigation System Materials", of Standard Specifications, except that all PVC piping shall be as per noted on the plans and as follows: Plastic Pipe Plastic pipe shall be extruded from virgin PVC (Polyvinyl Chloride) type 1, Grade 11 (Class 1220) as manufactured by Lasco Industries, Baldwin, Pacific Western, Johns- V-A-44 Agreement No. 6574 Manville or equal. Class schedule shall be as per plan. All plastic pipe shall be continuously and permanently marked with the following information: Manufacturer's name, nominal pipe size, PVC 1220, S.D.R. (Standard Dimension Ratios, or the pressure rating in pounds per square inch) and the N.S.F. (National Sanitation Foundation). Plastic fittings shall be PVC 11, I.P.S, (International Pipe Society), Schedule 40, N.S.F. and Schedule 80 threaded fittings as shown in the details as manufactured by Sloane Manufacturing Co. Solvent is to be per pipe manufacturer's recommendations. PVC Pressure Rated Pipe Type 1220 (PVC Class 160,200 & 315) and Type 1120 (PVC Schedule 40) Type I Grade II Pressure Rated Pipe. Materials shall meet the requirements set forth in ASTM D 1784-60T. Outside diameter of pipe shall be the same size as iron pipe. Pipe shall be marked at intervals with the following information (not to exceed 5'): Manufacturer's name, nominal size, PVC Type and grade (i.e., PVC 1220) SDR rating class, NSF approval and commercial standard designation as 256-63. PVC Type I shall not be threaded. PVC fittings shall be PVC Type II, Schedule 40 NSF approved. Solvent shall be #175 Gray NSF approved as manufactured by Industrial Polychemical Service, Gardena California. Caution shall be utilized in handling Type I pipe due to the possibility of cracking or of splitting when dropped or handled carelessly. When connection is plastic to metal, male adapters shall be hand tightened, plus one turn with a strap wrench. Joint compound shall be Permatix Type 11. PVC pipe shall be installed in a manner which will provide for expansion and contraction as recommended by the pipe manufacturer. All plastic to metal joints shall be made with plastic male adapters, unless otherwise shown in details. The joints shall be allowed to set at least twenty-four (24) hours before pressure is applied to the system on PVC pipe. After all new sprinkler piping and risers are in place and connected, and all necessary work has been completed and prior to the installation of sprinkler heads, control valves shall be opened and a full head of water used to flush out the system. After the system is thoroughly flushed, heads will be installed and the system tested. All new systems and isolated mainlines shall be tested. The Contractor shall not pressure test existing individual systems with valves or lateral lines attached (see pressure test section herein). prbnkler Ileads, Sprinkler heads (Root Zone Watering Systems) shall be as shown on plan. V-A-45 Agreement No. 6574 All nozzles on pop-up sprinklers shall be provided with ells and shall be adjusted to the proper height. All nozzles shall be adjusted for proper throw radius for efficient coverage. Sprinkler heads (Root Zone Watering Systems) shall be installed according to details. All Root Zone Watering Systems shown on the plan shall be new. Remote Control Valves Electric remote control valves shall be as shown on plan. Remote control valves shall be adjusted so that the most remote Root Zone Watering Systems operate at the pressure recommended by the manufacturer. Remote control valves shall be adjusted so that a uniform distribution of water is applied by the Root Zone Watering Systems to the planting areas for each individual valve system. trjc,� C" IIU2lang_valyc Quick coupling valves shall be as indicated on Plans and shall be a locking cover. Each quick coupler valve shall have a molded vinyl cover, yellow in color. All quick coupler valves keys and hose swivels shall be of same manufacturer as the quick couplers. Quick coupling valves shall be set in valve boxes approximately 12" from walks, curbs, header boards, or paved areas where applicable. Vertical positioning of quick coupling valves shall be such that sleeve top will be flush with the settled finish grade as determined after the turf is established and 3" above grade in ground cover areas. Valve Boxes All remote control valves, gate valves, and pressure relief valves shall be installed in suitable valve boxes as shown in details, complete with locking covers. All shall be Ametek or approved equal and shall be marked "G.V" or "RCV" with station numbers for control valves painted in 1-1/2" high black letters on valve cover by Contractor. Valve boxes shall be set one-half inch (3/4") above the designated finish grade in tree well planting areas. Valve boxes installed near walks, curbs, header boards and paving shall abut those items. All valves shown on the plan shall be new. Automatic Controllers Automatic controllers shall be as shown on Plans and details. The individual lot controllers will not be located on the plans as they are well outside the scope of work. A not will be provided for reference only. In most cases, there are less valves designed in the new system, therefore controller wiring or available station should not be an issue. The automatic controller shall be installed at the approximate location shown on the Plan. All private lot controllers are assumed to be existing and in working order. In the event a controller on a private lot is not in working order, it will be the responsibility of the individual lot owner, "not the Contractor". V-A-46 Agreement No. 6574 All local and other applicable codes shall take precedence in connecting the 110 volt electrical service to controller. City shall provide power to controller. Contractor shall complete hook-up to controller. There shall be adequate coverage of earth (18" minimum) over the 24-volt control wire. Install wire in trench and tape to main lines on side of pipe per the details. Control Wires All wiring to be used for connecting the automatic controller to the electrical solenoid actuated by remote control valve shall be Type OF-699V, 7 -strand or solid copper, PVC insulation, single conductor, UL approved underground feeder cable. Each pilot or "hot" wire shall be black or color -coded with the common wire being white. All electrical equipment and wiring shall comply with local and state codes and be installed by those skilled and licensed in the trade. Connecting and splicing of wire at the valves or in the field shall be made using a Rainbird Pen-Tite connector. Backflow Prevention Units The backflow prevention units shall be as shown on plans and details. Any other equipment not specifically noted herein but required by the plans, details, or legends shall be supplied and installed in strict accordance with the manufacturer's recommendations. If any question arises as to proper procedure, it shall be resolved with the Engineer before installation. It is assumed that each individual lot has an existing sprinkler backflow device in working order and therefore no new devices will be installed on individual private lots. 18-10. SITE CONDITIONS All scaled dimensions are approximate. The contractor shall verify all dimensions on the site prior to proceeding with work under this contract. Extreme care shall be exercised in excavating and working near existing utilities. Contractor shall be responsible for damage to any facilities. Should utilities not located or marked be found during excavation, the Contractor shall promptly notify the City and shall discontinue with work in the area, except necessary emergency work necessary to repair or prevent damage until instructions are received. Failure to notify the City of discovery of such utilities or damage thereto will result in the Contractor being liable for any and all damage caused to the utilities as a result of his actions. The Contractor shall, before starting work on the sprinkler system, carefully check all finish grades to satisfy himself that he may proceed with the work. V-A-47 Agreement No. 6574 18-11. WATER SUPPLY The Contractor shall arrange for the provision of the water supply. The Contractor shall connect to the water source as indicated on the plans. The Contractor shall coordinate with each private lot if or when water will be shut down for hookup, etc. in a timely and orderly manner. 18-12. ELECTRICAL Power sources shall be as indicated on the plans. The Contractor shall connect at the point shown on the plans. The Contractor shall be responsible for snaking electrical connections to the automatic controllers. All wiring shall be routed as shown on plans. All electrical work shall be in accordance with all local or county ordinances. It is assumed that private lot controllers are in working order. The Contractor shall coordinate with the private lot maintenance company when any connections or timing shall be adjusted to turn off a system or establish the landscape. 18-13. TRENCHES IN GENERAL (NOT IN THE ROADWAY) Trenches shall be dug straight, and pipe shall have the continuous support for the ditch bottom and shall be laid to an even grade. Trenching excavation shall follow the layout indicated on the plans. All pressure supply lines shall have a depth of eighteen (18) inches minimum unless otherwise noted. All non -pressure supply lines shall have a depth of twelve (12) inches minimum as shown in the details. All lines shall have a minimum clearance of six (6) inches from each other and from lines of other trades. No line shall be installed directly over another line. 18-14. BACKFILLING Backfill for trenching shall be compacted to dry density equal to the adjacent undisturbed soil, and shall conform to the adjacent grades without dips, sunken areas, humps or other irregularities. Initial backfill on all lines shall be of a fine granular material with no foreign matter larger than one-half (1/2) inch in size. If, in the opinion of the Engineer, the excavated material is not satisfactory for use as backfill, the Contractor shall dispose of this unsatisfactory material. The Contractor shall be responsible for any settling of trenches from his work. 18-15. PRESSURE TEST All pressure lines shall be tested under hydrostatic pressure of one -hundred sixty (160) Agreement No. 6574 pounds per square inch for a 24 hour period and all non -pressure lines shall be tested under the existing static pressure, and both be proven watertight. Pressure shall be sustained in the lines for not less than four hours. If leaks develop, the joints shall be replaced and the test repeated until the entire system is proven watertight. Test shall be observed and approved by the Engineer or City Representative prior to backfill. Upon completion of each phase of the work, the Contractor shall check and adjust each sprinkler head to meeting the site requirements. 18-16. WORKMANSHIP AND PROCEDURE The routing of the pressure supply lines as indicated on the plans is diagrammatic. The Contractor shall install lines in a manner that conforms with the various details, without offsetting the various assemblies frorn the pressure supply line. No multiple assemblies shall be installed on plastic lines. Each assembly shall be provided with its own outlet. All assemblies specified herein shall be installed in accordance with the respective detail. In the absence of detail plans or specifications pertaining to the specific items required to complete the work, the Contractor shall perform such work in accordance with the best standard practice and to the satisfaction of the Engineer. 18-17. INSPECTION OF WORK Installations and operations must be approved by the Engineer. Prior to commencing work, the Contractor shall arrange a meeting with the City, at which time the Contractor will be informed of specific inspections required and the method of calling for such inspections as the individual work is completed. 18-18. RESPONSIBILITY The Contractor shall be responsible for all work to be performed under this contract. No Contractor shall be relieved of his liability to complete the work shown on the plans and indicated in the specifications, unless authorized in writing by the City or City's approved representative. The Contractor shall protect his work from damage and theft at all time, and replace all damaged or stolen parts at his expense until the work is accepted in writing by the City. The Contractor shall protect the City's property and adjacent private lot property from injury or loss. All damage to existing property (buildings, vehicles, utilities, etc.) or planting (trees, shrubs, lawns or groundcovers) caused by the Contractor during his operation or as a result of malfunction of installed work during the guarantee period shall be repaired at the Contractor's expense. The Contractor shall carefully note all finish grade before commencing work. Any finish grade changed during the course of his work shall be restored to the original V-A-49 Agreement No. 6574 contours. The Contractor shall cause no interference with private lot employees, workmen or the materials and equipment of other trades people working on the project. The Contactor shall coordinate any work in the parkways that will have any effect on a private lot. This includes, but is not limited to: cutting and capping of mainline, valve, lateral, sprinkler or wiring removal. 18-19. COMPLETION CLEAN-UP Upon completions of work, the Contractor shall remove excess materials, rubbish, debris, etc., and his construction and installation equipment from the premises. 19-0. TRAFFIC SIGNALS AND mIN INTERSECTION LIGHTING 19-1, GENERAL Traffic signal and intersection lighting shall conform to the provisions of Part 7, "Street Lighting and Traffic Signal Systems" of the Standard Specifications and these Special Provisions. Wherever reference is made to the State Standard Specifications and Standard Plan, such reference shall mean the State of California, Department of Transportation, Standard Plans and Specifications 2010 edition and Amendments to Standard Specifications 2010. All materials and equipment shall be furnished and installed by the contractor, except LAC04E program. LAC04E program shall be furnished and installed by Los Angeles County. The GPS universal time base unit and antenna shall be mounted per manufacturer's guidelines. The GPS universal time base unit antenna shall be located on the street side of the top of the controller cabinet. All new underground conduits shall be schedule 80 PVC, unless otherwise approved by the Engineer. All new poles, conduit, and pull boxes shall be installed outside of curb ramps. All standards shall be drilled for mounting signal hardware and equipment. The use of signal mounting clamps is prohibited. When the plans require the relocation of vehicular or pedestrian signals, the Contractor shall provide the necessary framework and modify the existing to accommodate either the circular tapered pole or the octagon concrete pole. Relocate existing emergency vehicle detection and license plate detection facilities to new poles, as shown on the plans. Contractor shall pothole all signal poles, conduit runs, and cabinet locations. Prior to V-A-50 Agreement No. 6574 procuring equipment, contractor shall notify engineer of conflicts that will impact the installation of signal equipment. Install loop detectors prior to final pavement delineation. Loop detector replacement work at El Segundo Boulevard and Pacific Coast Highway will require a Caltrans Encroachment Permit. Loop detector replacement work at Nash Street and Imperial Highway will require a City of Los Angeles (Department of Transportation) Encroachment Permit. Contractor shall coordinate with Southern California Edison to comply with minimum overhead clearances for the removal and/or installation of traffic signal poles. At least two working days before the scheduled final inspection of the traffic signals, all testing should be completed and successful, all defects and deficiencies corrected, all indications operational and properly aimed, cables tagged, controller fully operational performing all timing functions required, all other items of work associated with the signal completed, and all signs and pavement markings properly installed. The Contractor shall notify the County Traffic Engineer and City at least two working days prior to final inspection of the traffic signals. Mal maitin g> xµ%iii L, and "cmpgar Electrical Stdpis All work and materials required to keep the existing traffic signal and street lighting systems operational, including temporary traffic signal poles, controller, controller cabinet, and wiring will be considered as included in the lump -sum price bid for traffic signal relocation, and no additional compensation will be allowed therefor. Loy An,cle.;, Cottnt r C,t.)oadination Contact Los Angeles County Public Works at (626) 300-2012 one month in advance of signal construction to coordinate signal timing and implementation. Final pole and cabinet locations shall be approved by the Los Angeles County Department of Public Works (County) Traffic Engineer and the City of El Segundo prior to installation. No signal turn-ons shall occur on Fridays or the day preceding a holiday. The County and City shall be notified of turn -on 48 hours in advance to allow for proper notifications. 19-2. COST BREAKDOWN The Contractor shall furnish to the Engineer a cost breakdown for signal, lighting and electrical systems as described in this section. The Contractor shall determine the quantities required to complete the work shown on the plans. The quantities and values shall be included in the cost break -down submitted to the Engineer for approval. The Contractor shall be responsible for the accuracy of the quantities and values used in the cost break -down submitted for approval. No adjustment in compensation will be made in the Contract Lump Sum Prices paid for the various electrical work items due to any differences between the quantities V-A-51 Agreement No. 6574 shown in the cost break -down furnished by the Contractor and the quantities required to complete the work as shown on the plans and as specified in these Special Provisions. The sum of the amounts for the units of work listed in the cost break -down for signals, lighting and electrical work shall be equal to the Contract Lump Sum Price bid for the work. Overhead, profit, bond premium, temporary construction facilities, plant and other items shall be included in each individual unit listed in the cost break -down; however, costs for traffic control system shall not be included. The cost break -down shall be submitted to the Engineer for approval prior to the Owner issuing the Notice to Proceed. The cost break -down shall be approved, in writing, by the Engineer before any partial payment for the items of electrical work will be made. At the Engineer's discretion the approved cost break -down may be used to determine partial payments during the progress of the work and as the basis of calculating the adjustment in compensation for the item or items of electrical work due to changes ordered by the Engineer. The cost breakdown shall, as a minimum, include the following items: 1. Foundations - each type 2. Standards and poles - list by each type 3. Conduit - list by each size and installation method 4. Pull boxes - each type 5. Conductors - each size and type 6. Signal heads and hardware each type 7. Pedestrian signal heads and hardware - each type 8. Pedestrian push buttons 19-3. EQUIPMENT LIST AND DRAWINGS The Contractor shall furnish a maintenance manual for all new controller units, auxiliary equipment, and vehicle detector sensor units, control units, and amplifiers installed. The maintenance manual and operation manual may be combined into one manual. The maintenance manual or combined maintenance and operation manual shall be submitted at the time the controllers are delivered for testing or, if ordered by the Engineer, prior to purchase. The maintenance manual shall include, but need not be limited to, the following items: 1. Specifications 2. Design characteristics 3. General operation theory 4. Function of all controls 5. Trouble shooting procedures (diagnostic routine) 6. Block circuit diagram 7. Geographical layout of components 8. Schematic diagrams 9. List of replaceable component parts with stock numbers V-A-52 Agreement No. 6574 19-4. STANDARDS, STEEL PEDESTALS, AND POSTS All standards shall be installed 2" above the finished surface (grade). The void between the base plate and surface shall be filled with mortar conforming to the provisions of the Section 86 "Foundations" of the State Standard Specifications (2010 edition and supplements). When a standard or mast arm is relocated, new nuts, bolts, cap screws and washers shall be provided by the Contractor and shall conform to the requirements for hardware used with new standards. All Type 1 A standards shall be aluminum. Anchor bolts, bolt circle, threads, nuts, and washers shall conform to the Standard Plans. Anchor bolt covers are required. Standards and posts with pedestrian push buttons shall be installed no further than 5 feet from the back of cross walk or limit line unless otherwise noted on the plans. 19-5. PULL BOXES Pull boxes shall be No. 6 unless otherwise indicated on plans. All pull boxes shall be precast of reinforced Portland cement concrete (PCC). The Contractor shall grout any existing pull boxes that are to remain in place and are not grouted with material specified in Section 87-1.03C of the State Standard Specifications. The Contractor shall excavate within the pull box to proper depth prior to grouting. 19-6. CONDUCTORS, CABLE, AND WIRING (Two -pair) DLC cable shall be used unless otherwise noted on the plans. Three -conductor cable (3CSC), five -conductor cable (5CSC), and twelve -conductor cable (12CSC) shall be installed in lieu of individual conductors. No other traffic signal multi -conductor cable will be accepted unless otherwise approved by the Engineer. Installation shall be as follows: 1. A 12-conductor cable shall be installed from the cabinet to each pole unless otherwise indicated on the plan(s). 2. A 3-conductor cable (pedestrian push button) shall also be installed from the cabinet to each pole. An additional 3-conductor cable must be provided if two pedestrian push buttons are located on the same pole. 3. A vehicle preemption cable shall be installed from the cabinet to the respective pole. An additional preemption cable shall be installed if two detectors are located on the same pole. 4. No splices will be allowed for the installation of the conductors for Items 1, 2, and 3 above. 5. Each conductor and cable shall be identified in the controller cabinet. 6. Other required cables, detectors and interconnect, and conductors for luminaires, I.I.S.N.S., vehicle preemption and signal service shall be installed as indicated in the Conductor Schedule. V-A-53 Agreement No. 6574 The Contractor shall be responsible to install the number of conductors and/or cable(s) needed to operate the electrical system(s). Omissions in the conductor schedule or unnumbered conduit runs shall not constitute "Extra Work". This also pertains to conductors for future phases indicated on the plan(s) for installation. Service conductors for traffic signal systems shall be No. 6 AWG, unless otherwise noted on plan. All service conductors shall be continuous between controller and service point, and no splices will be allowed. 19-7. TESTING The cabinet and controller and related equipment, including a battery back-up system shall be delivered to the City signal maintenance facility 20 working days prior to installation in the field. No testing of the cabinet or equipment will start until all of the equipment is delivered to the signal maintenance facility. 19-8. SIGNAL FACES AND SIGNAL HEADS General Signal faces and signal heads shown on plans and the installation thereof shall conform to the Intertek LED Traffic Signal Modules Certification Program and shall include the ETL Verified Label. New vehicle heads shall be 12" LED. The contractor shall cover all the non-functioning vehicle heads and pedestrian heads utilizing signal head covers which are specially fabricated for that purpose. Covers shall be designed to be easily installed by hand without the use of tools. Signal head cover shall be made from outdoor grade, weather- resistant material of a tan color. The size of the cover shall closely fit and encapsulate the applicable signal head with stretch material. The cover shall be secured in place with bolt snaps attached to elastic straps. The straps shall be permanently attached to the cover. Cardboard and bags shall not be allowed to cover signal heads. Signal section housings, backplates, visors, etc. shall be metal unless otherwise noted on the plans. pedestrian Signial. New pedestrian signals shall be McCain, ICC or City approved equal, and shall include the Z-crate front screen. The pedestrian signal shall be a countdown type, with a solid filled hand on the left-hand side of the pedestrian signal and the numerical "countdown" indication on the right -side of the pedestrian signal. New pedestrian heads shall use a single LED module for both symbols. Modules shall have filled LED displays, outline only is not acceptable. Modules shall be warranted for a minimum of five years against failure. All modules shall be listed in the Intertek LED Traffic Signal Modules Certification Program (www.intertek- V-A-54 Agreement No. 6574 etlsemko.com/ledtraffic) and include the ETL Verified Label. If the contract plans and/or these special provisions indicate the installation of auditory pedestrian signals, refer to Audible Pedestrian Traffic Signal herein. .Accessible Pedestrian Signal (AP The audible pedestrian signal shall be Polara EZ Comm Navigator 2-Wire (EN2) Model or approved equal. The system shall include a Central Control Unit and Interconnect Board in the traffic signal cabinet. The system shall be programmed by the contractor and include the audible WALK message, audible locating tone, audible "chirp" and "cuckoo' sounds, and street names. Audible Pedestrian Traffic Si« 1 The audible pedestrian signal shall supplement the visible "walk symbol" indication and shall be mounted within the housing of the pedestrian signal on the walk symbol side. Output (electrical circuit) shall be generated from the field conductors to the associated pedestrian signal head. Audio output shall be adjustable. Additionally, audio output may be self -switching, from an adjustable low to an adjustable high, and shall be responsive to external ambient noise. Directional audio outputs for right-of-way designations shall be represented by 2 distinct bird chirping sounds. The northerly and southerly phase(s) shall utilize a "CUCKOO" sound. The easterly and westerly phase(s) shall utilize the "PEEP -PEEP" sound. Operation parameters shall be: 0 115V AC +/- 15%, 60 Hz, 3 watts 0 -20 degrees C to 70 degrees C temperature range 90 dB/watts at 1-meter (max.) output 19-9. VIDEO DETECTION SYSTEM Contractor shall install Vantage Vector Video Detection System including cameras, hardware, rack mount, and software into the controller cabinet. The contractor shall furnish and install video detection cameras (VDC), video detection processors (VDP), extension modules (EM), a pointing device, a drawer mounted 17" LCD monitor, surge suppressors, and all necessary cabling and auxiliary equipment to make the video detection systems fully functional for the intended operation. The Contractor shall furnish a spare VDC, a spare EM, and a spare VDP to the Engineer. The video detection camera shall be attached to the luminaire or signal mast arm via manufacturer recommended method. The Engineer shall approve the final camera placements. The video detection systems shall be installed by supplier factory certified installers and as recommended by the supplier and documented in installation materials provided by the supplier. Proof of factory certification shall be provided. V-A-55 Agreement No. 6574 Video Detection Zones Placement of detection zones shall be done by using the supplied pointing device connected to the VDP to draw the detection zones on the video image from the video camera displayed on a video monitor using the menu and graphical interface built into the VDP. The menu shall facilitate placement of detection zones and setting of zone parameters or to view system parameters. Detection zone setup shall not require site -specific information such as latitude, longitude, date and time to be entered into the system. No separate computer shall be required to program the detection zones. Each detection zone shall be user definable in size and shape to suit the site and the desired vehicle detection region. A detection zone shall be approximately the width and length of one car. Video detection zones shall also detect bicycles separately. A single detection zone shall be able to replace multiple inductive loops and the detection zones shall be OR'ed as the default or may be AND'ed together to indicate vehicle presence on a single phase of traffic movement. When a vehicle is detected crossing a detection zone, the corners of the detection zone shall flash on the video overlay display screen to confirm the detection of the vehicle. Distance between the detection zone placement and the camera shall not be more than a distance of ten times the mounting height of the camera. All detection zones shall be centered in the middle of the lane and front detection zones shall be placed behind the edge of the crosswalk or limit line, unless otherwise noted. Functional Ca :rabilitie„ System must have a single point access to multiple rack -mounted video detection units. The access device shall provide interface capabilities to enable multiple rack -mounted video detection processors to be locally and remotely accessed from a single point via one set of user interface devices. The system shall have a quad -view remote communications module that offers local and remote management of data via Iteris Vantage EdgeConnect or approved equal. The video detection processor (VDP) shall process video from one or two sources. The video input to the VDP shall be in NTSC or PAL composite video format and shall be digitized and analyzed in real time. Dual video VDP's shall process images from both inputs simultaneously. The camera shall be able to transmit the composite video signal, with minimal signal degradation, up to 1000 feet under ideal conditions. The VDP shall have a nine -pin RS232 port that is multi -drop compatible for communications with an external computer. The VDP shall be able to accept new detector patterns from and send its detection patterns to an external computer through this RS-232 port. A Windows -based software designed for local or remote connection for uploading and downloading data, and providing video capture, real-time detection V-A-56 Agreement No. 6574 indication and detection zone modification capability shall be provided with the system. The extension module (EM) shall be available to avoid the need of rewiring the detector rack, by enabling the user to plug an extension module into the appropriate slot in the detector rack. The extension module shall be connected to the VDP by an 8-wire cable with modular connectors. VDP and EM communications shall be accommodated by methods using differential signals to reject electrically coupled noise. The extension module shall be available in both 2 and 4 channel configurations. EM configurations shall be programmable from the VDP. The VDP shall provide a minimum of 24 channels of vehicle presence detection/detection zones per camera through a standard detector rack edge connector and one or more extension modules. The VDP shall store up to three different detection zone patterns within the VDP memory. The VDP's memory shall be non-volatile to prevent data loss during power outages. The VDP shall continue to operate (e.g. detect vehicles) using the existing zone configurations even when the operator is defining/modifying a zone pattern. The new zone configuration shall not go into effect until the operator saves the configuration. Each configuration can be uniquely labeled for identification and the current configuration letter is displayed on the monitor. The selection of the detection zone pattern for current use shall be done through a local menu selection or remote computer via RS-232 port. It shall be possible to activate a detection zone pattern for a camera from VDP memory and have that detection zone pattern displayed within 1 second of activation. The VDP shall provide dynamic zone reconfiguration (DZR) to enable normal detector operation of existing channels except the one where a zone is being added or modified during the setup process. The VDP shall output a constant call on any detection channel corresponding to a zone being modified. The VDP shall detect vehicles in real time as they travel across each detector zone. The VDP shall output a constant call for each enabled detector output channel if a loss of video signal occurs. The VDP shall output a constant call during the background learning period. The VDP shall be capable of detecting a low -visibility condition automatically, such as fog, and place all defined detection zones in a constant call anode. The VDP shall automatically revert to normal detection mode when the low -visibility condition no longer exists. A user -selected output shall be active during the low -visibility condition that can be used to modify the controller operation if connected to the appropriate controller input modifier(s). Detection shall be at least 98% accurate in good weather conditions and at least 96% accurate under adverse weather conditions (rain, snow, or fog). Detection accuracy is dependent upon site geometry; camera placement, camera quality and detection zone location, and these accuracy levels do not include allowances for occlusion or poor video due to camera location or quality. V-A-57 Agreement No. 6574 Detection zone outputs shall be configurable to allow the selection of presence, pulse, extend, and delay outputs. Timing parameters of pulse, extend, and delay outputs shall be user definable between 0.1 to 25.0 seconds. Up to six detection zones shall be capable to count the number of vehicles detected. The count value shall be internally stored for later retrieval through the RS-232 port. The data collection interval shall be user definable in periods of 5, 15, 30 or 60 minutes. Video Detectiog ProcesLcLr DP) and Extension Module1e M)_Hardware The VDP and EM shall be specifically designed to mount in a standard NEMA TS-1, TS-2, 2070 ATC, 170 type detector rack, using the edge connector to obtain power and provide contact closure outputs. No adapters shall be required to mount the VDP or EM in a standard detector rack. Detector rack rewiring shall not be required or shall be minimized. The VDP and EM shall operate in a temperature range from -34°C to +74°C and a humidity range from 0%RH to 95%RH, non -condensing. The VDP and EM shall be powered by 12- or 24-volts DC. These modules shall automatically compensate for the different input voltages. VDP power consumption shall not exceed 300 milliamps at 24 VDC. The EM power consumption shall not exceed 120 milliamps at 24 VDC. The VDP shall include an RS232 port for serial communications with a remote computer. The VDP RS232 port shall be multi -drop compatible. This port shall be a 9- pin "D" subminiature connector on the front of the VDP. The VDP shall utilize flash memory technology to enable the loading of modified or enhanced software through the RS232 port without modifying the VDP hardware. The VDP and EM shall include detector output pin out compatibility with industry standard detector racks. The front of the VDP shall include detection indications, such as LED's, for each channel of detection that display detector outputs in real time when the system is operational. The front of the VDP shall include one or two BNC video input connection suitable for RS 170 video inputs as required. The video input shall include a switch selectable 75- ohm or high impedance termination to allow camera video to be routed to other devices, as well as input to the VDP for vehicle detection. Video must be inputted via a BNC connector on the front face of the processor. RCA type connectors/jacks for video input are not allowed. Video shall not be routed via the edge connectors of the processor. The front of the VDP shall include one BNC video output providing real time video output that can be routed to other devices. A RCA type connector/jack for video output is not allowed. The front panel of the VDP and EM shall have a detector test switch to allow the user to place calls on each channel. The test switch shall be able to place either a constant V-A-58 Agreement No. 6574 call or a momentary call depending on the position of the switch. Video Detection Carnera (VDC), The Video Detection Camera (VDC) used for traffic detection shall be furnished by the Video Detection Processor (VDP) supplier and shall be qualified by the supplier to ensure proper system operation. The VDC shall be attached to the signal mast arm per County of Riverside standard 1204 and manufacturer's specifications. The camera shall produce a useable video image of the bodies of vehicles under all roadway lighting conditions, regardless of time of day. The minimum range of scene luminance over which the camera shall produce a useable video image shall be the minimum range from nighttime to daytime, but not less than the range 0.1 lux to 10,000 lux. The camera shall use a CCD sensing element and shall output monochrome video with resolution of not less than 380 lines horizontal. The camera shall include an electronic shutter control based upon average scene luminance and shall be equipped with a factory adjusted manual iris. Auto -iris lenses are not allowed. The camera shall include a variable focal length lens with variable focus that can be adjusted, without opening up the camera housing, to suit the site geometry by means of a portable interface device designed for that purpose and manufactured by the detection system supplier. The horizontal field of view shall be adjustable from 8.1 to 45.9 degrees. A single camera configuration shall be used for all approaches in order to minimize the setup time and spares required by the user. The camera electronics shall include Automatic Gain Control (AGC) to produce a satisfactory image at night or low light conditions. The camera shall be housed in a weather -tight sealed enclosure. The housing shall be field rotatable to allow proper alignment between the camera and the traveled road surface. The camera enclosure shall be equipped with a sunshield. The sunshield shall include a provision for water diversion to prevent water from flowing in the camera's field of view. The camera enclosure with sunshield shall be less than 153 min diameter, less than 380-mm long, and shall weigh less than 2.7 kg when the camera and lens are mounted inside the enclosure. The camera enclosure shall include a thermostatically controlled heater to assure proper operation of the lens shutter at low temperatures and prevent moisture condensation on the optical faceplate of the enclosure. When mounted outdoors in the enclosure, the camera shall operate satisfactorily in a temperature range from -34 degree C to +60 degree C and a humidity range from 0% RH to 100% RH. The camera shall be powered by 120-240 VAC 50/60 Hz. Power consumption shall be V-A-59 Agreement No. 6574 15 watts or less under all conditions The camera enclosure shall be equipped with separate, weather -tight connections for power and setup video cables at the rear of the enclosure. These connections may also allow diagnostic testing and viewing of video at the camera while the camera is installed on a mast am or pole using a lens adjustment module supplied by the VDP supplier. Video and power shall not be connected within the same connector. The video signal output by the camera shall be black and white in RS 170 or CCIR format. The video signal shall be fully isolated from the camera enclosure and power cabling nd Connections Interface among the VDPs and EMS shall use RJ-45 interface connectors The coaxial cable to be used between the camera and the VDP in the traffic cabinet shall be Belden 8281. The coax cable shall be a continuous unbroken run from the camera to the VDP. This cable shall be suitable for installation in conduit or overhead with appropriate span wire. 75-ohm BNC plug connectors should be used at both the camera and cabinet ends. The coaxial cable, BNC connector, and crimping tool shall be approved by the supplier of the video detection system, and the manufacturer's instructions must be followed to ensure proper connection. The power cabling shall be 16 AWG three conductor cable with a minimum outside diameter of 0.325 inch and a maximum diameter of 0.490 inch. The cabling shall comply with the National Electric Code, as well as local electrical codes. Cameras may not acquire power from the luminaire. All service cables shall run continuously into the service cabinet. A 1-amp Inline fuse shall be provided for each service cable and a minimum of 8-position terminal block shall be provided as directed by the Engineer inside the service cabinet. 4amtenance and ,S kiW, ort The supplier shall maintain an adequate inventory of parts to support maintenance and repair of the system. These parts shall be available for delivery within 30 days of placement of an acceptable order at the supplier's then current pricing and terms of sale for said parts. The supplier shall maintain an ongoing program of technical support for the access unit and video detection system. This technical support shall be available via telephone, or via personnel sent to the installation site upon placement of an acceptable order at the supplier's then current pricing and terms of sale for onsite technical support services. Installation or training support shall be provided by factory -authorized representative. 19-10. PEDESTRIAN PUSH BUTTONS The push button shall be designed to be highly vandal resistant with essentially no moving parts. It shall feature pressure activation using a piezo driven solid-state switch V-A-60 Agreement No. 6574 that requires an activating force of less than 3 lbs. Activation of the pedestrian button will be confinned by the generation of an audible beep tone and a visual indication using an ultra -bright red LED with a minimum intensity of 1200 mcd. The body of the button shall be traffic green in color. Polara BDL3-G, Campbell Company 4evr120 round 4-bolt mount, or City approved equal. Screws used to secure the sign plate to the housing shall be stainless steel #8-32 x 3/8 with tamper proof torx head, size T-15, or a City approved equal. All new pedestrian push buttons shall be installed in conformance with ADA requirements. 19-11. LIGHTING AND APPURTENANCES hi lit Einitting Diode "1. 1.1 l.�untilt�res The luminaire includes an assembly that uses LEDs as the light source. The assembly includes a housing, an LED array, and an electronic driver (i.e. power supply). The luminaire shall be a GE Evolve LED Series Roadway Cobrahead or a City approved equal. The luminaire shall comply with the following requirements: 1. UL listed under UL 1598 for luminaires in wet locations or an equivalent standard from a recognized testing laboratory. 2. Have a miniinum operational life of 50,000 hours 3. Expected to operate at an average operating time of 12 hours per day 4. Have an operating temperature range from -40 to 1200 F 5. A monolithic LED printed circuit board assembly utilizing Metal Core Printed Circuit Board 6. A nominal correlated color temperature (CTT) of 5000 OK 7. A typical color rendering index (CRI) > 70 8. A locking photocell receptacle with a tool -less orientation 9. A UL Class 2 power supply units (i.e. drivers) operating in DC constant current mode supplying DC forward current for LED operation (no pulsed operation allowed) 10. A Class A sound rating 11. A housing construction consisting of: die cast aluminum, finished with corrosion resistant polyester powder paint, minimum 2.0 mil thickness — gray color, with internally mounted driver(s) on a replaceable door assembly — accessible without tools, corrosion resistant fasteners, include wildlife intrusion protection at mounting arm 12. ED modules/array shall deliver at least 80% of initial lumens, when installed for a minimum of 50,000 hours 13.IESNA LM-79-08 Approved method for electrical and photometric measurements of solid —state lighting products 14. ISNA LM-80-08 Approved method for measuring lumen maintenance of LED lighting sources 15. A 5 year minimum warranty for the replacement or repair of the luminaire due to any electrical failure (including light source and or power supplies/drivers). - End of Section - V-A-61 Agreement No. 6574 APPENDIX A EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PROJECT NO.: PW 23-02 MISCELLEANOUS CONTACT INFORMATION UTILITIES City ofEl Segundo - Water Division Anthony Esparza AEs Garza )E I S eg un d o. o rg, 400 Lomita Street El Segundo, CA 90245 310-524-2746 City of F.1 Segundo - Wastewater Division Anthony Hernandez AFfernatidez(ii,),E]SeL,L�iiido.oi- 150 Illinois Street El Segundo, CA 90245 310-524-2754 CityofEl Se undo - Streets Division Beto Moreno AMoreno 41L1Seundo.o 150 Illinois Street El Segundo, CA 90245 310-524-2899 CILN, of.El Segundo - Fiber 00fic Communications Lifan Xu, City Engineer 350 Main Street El Segundo, CA 90245 310-524-2368 American Dark Fiber Joseph Gonzales Jose i)ii.Goiizales,(e-i)]-IPCoi,niii,liie.co,iii 13341 Ternescal Canyon Rd Corona, CA 922883 951-858-0154 AT&T Distribution Substructure Records Request, Construction and Engineering II-B-a Agreement No. 6574 ma2797�c att.com 510-645-2929 AT&T Transmission Maria Guzman MG1371(d)ATT.com 420 S Grand Ave Rm 707 Los Angeles, CA 90071 213-787-9996 Lunen 'rechn(4o ie Centnr l,in /Level 3 Area Representative relocations@lumen.com 1025 Eldorado Blvd Broomfield, CO 80021 877-366-8344 Reference number 170807 CA for communications with CentuiyLink Bryan Church — contact for crew to do maintenance hole adjustments 503-560-5590 Bryan.church@lumen.com Charter Ctirnrnunicat'ions S ectrurri Rey Lopez DL-SoCal-Clrartei°-Fii i.neei�in aCharter.com 7337 Central Ave Riverside, CA 92504 Chevron Dave Zerler DaveZerlier i .h ,vronxon'i 2600 Homestaed PI Rancho Dominguez, CA 90220 310-669-4014 Crimson Pipeline, LP Shenan Lovrien 3760 Kilroy Airport Way, Suite 300 Long Beach, CA 90806 562-285-4107 dIovrien(arrinisonpl. coin, LaridDe artrnent a)CrimsogPL.com Contact Shenan Lovrien: 562-285-4107, between the hours of 6:30 A.M. and 5:00 P.M., Monday through Friday, a minimum of 48 hours in advance of commencing said construction activities within vicinity of facilities to schedule on site representative. II-B-b Agreement No. 6574 Crown Castle Communications Fiber Dig Fiber.Di , CrownCastle.conn 1500 Corporate Dr, Canonsburg, PA 15317 888-632-0931 Golden State Water Company Joe Salcido, Southwest Superintendent Jose,lt.Salcido�� swater.com 1600 W Redondo Beach Blvd #101 Gardena, CA 90247 310-660-0320 ext 101 Notify 30 days ahead of work to hold a pre -construction meeting. Notify GSWC prior to construction commencement to verify any slip -cans that will be impacted by the street improvement project. These can be adjusted by the City contractor during the paving. If the GSWC appurtenances are damaged, please notify Mr. Joe Salcido so that GSWC may inspect the repair work. Los Angeles County Flood Control district Area Engineer - Imperial Yard 5525 E Imperial Highway South Gate, CA 90280 562-861-0316 Los Angeles County Public Works, Road Department Aspet Davidian 900 S Fremont Ave Alhambra, CA 91803 Los Angeles County Sanitation District CSD Superintendent of Maintenance 310-638-1161 engineeringcounter@lacsd.org Notify CSD Superintendent of Maintenance a minimum of three working days prior to the start of any work involving CSD manhole covers. Metro - Green Line Derek Porcella DavidianA L �metro.net 213-922-7255 Metropolitan Water District Kevin Johansen PO Box 54153 Terminal Annex II-B-c Agreement No. 6574 Los Angeles, CA 90054 562-713-0348 Notify Kevin Johansen of MWD Water System Operations Group at 562-713-0348 at least two working ways prior to work within vicinity of facilities. Reference substructures job no. 2018-20-004 in communications. For further questions or coordination, contact Ken Chung, Principal Engineering Technician, Substructures Team, Engineering Services Group kchung@mwdh2o.com 213-217-7670 Northrup Grumman Rosana Larosa Ste . hen.Galc z)NGC.coni One Space Park S/SDS351 Redondo Beach, CA 90278 310-812-9014 Phillips 66 Pipeline LLC Jason Sum Matthew.Moors i P66.com 411 S Keller Ave Bartlesville, OK 74004 918-977-6684 Shell Gil Pipeline Diego Castillo SPLC-Enc;roactirnents �Shell.com 20945 S Wilmington Ave Carson, CA 90810 310-816-2063 Reference Inquiry 17286 in communications. SoCalGas — Distribution SCG-CornZp,n:l ltilit Re hest �Sem )m,, Util.ities.con 310-687-2011 SoCalGas — Transmission I Castillo4-a SoCalGa^s.com 9400 Oakdale Ave Chatsworth, CA 91311 Reference transmission document control plan file 0831-20-1170 1172 1173 1175 1177 1241. Southern California Edison Irma Knight II-B-d Agreement No. 6574 IrmaKni bttii?sce.coni 505 Maple Ave Torrance, CA 90503 Information requests: email Utility Notices Desk at UNDksce.com Torrance Pipeline Co / PBF Energy Eleanor Marx TOR_ RQW(i0BF nerg com 12851 166th St Cerritos, CA 90703 310-212-2914 Torrance Pipeline requires a representative to be on site during construction activities near our facilities. Therefore, you or your contractors are hereby notified to contact, in addition to the above referenced USA notice, Torrance Pipeline's designated representative at (310) 212- 1842 or (714) 296-6259 between the hours of 6:30 A.M. and 3:30 P.M., Monday through Friday, a minimum of 48 hours in advance of commencing said construction activities. Reference File Number 20-7370 in communications. Verizon Business / MCI Investi atiotts 4a,�verizon,comn 400 International Pkwy Richardson, TX 75081 As of 7/8/2021 requests for facility information for Verizon has been outsourced to ASG. Please submit your request to ASG.Investi gat ionst�eani rik .SGInc. its. For future requests, please send directly to ASG but continue to copy Invest i ations(���`' erizon.cotn. Nest Basin Municipal "Water District Franks Fuchs FrankF@Vi/estl3asin.ot'r 17140 S Avalon Blvd #240 Carson, CA 90746-1218 310-660-6255 7ayo FNA AboveNet Substructure Records Request, Construction and Engineering George. 1060 Hardees Drive Aberdeen, MD 21001 443-403-2023 I1-B-e Agreement No. 6574 TRANSIT AGENCIES Los Angeles Metropolitan Transit Authority Metro �us Conte 23L EvcntsDcsl rtametro.net Provide 4 days notice regarding temporary bus stop relocation. State the dates of relocation and existing bus stop locations (direction of travel, corner, etc) in the notice. City of El. Segundo -- Lunchtime Shuttle Ryan Delgado 350 Main Street El Segundo, CA 90245 310-524-2741 Provide 7 days notice regarding temporary bus stop relocations. Gardena Transit _ Bus Route S littp //rirle trans.cojii/cotutict/ City of Los Angeles Del2artment of Transportation _(Commuter Ex ress 43 / 574 LADOT Transit Customer Service Center 201 North Los Angeles St. #16 Los Angeles, CA, 90012 (213, 310, 323 or 818) 808-2273 Provide 7 days notice regarding temporary bus stop relocations. Torrance 'Fransrit — Bus Route Il David Mach DMacl ct Torrart.ceCA, Gov 20500 Madrona Avenue Torrance, CA 90503 310-781-6974 Provide 30 calendar days notice regarding temporary bus stop relocations. OTHER AGENCIES City of E1 Segundo — recreation and Parrs Christopher Hentzen 3 l 0-524-2707 C'11,eilt,zeii(/'�,,else�tindo.org City of El Segundo -- Police Department 310-524-2200 II-B-f Agreement No. 6574 Notify 48 hours prior to any street closures. Notify and receive approval from City of El Segundo — Engineering Division prior to notification. City of El Segundo — Fire lie arty ent 310-524-2269 Notify 48 hours prior to any street closures. Notify and receive approval from City of El Segundo — Engineering Division prior to notification. Los Angeles County Public Works - Traffic Signal Division 626-300-2012 Contact one month in advance of signal construction to coordinate signal timing and implementation. El Segundo Unified School District 310-615-2650 Wiseburn Unified School District 310-725-2101 City of Los Angeles, Department of Transportation Traffic Signal Maintenance Service/Intake 818-752-5112 Contact one month in advance of signal construction to coordinate signal timing and implementation. II-B-g Agreement No. 6574 APPENDIX B EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PROJECT NO.: PW 23-02 PROJECT SIGN INFORMATION TLOW EL b40`hE%jjw`UNrUw'U0% EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT <website>, <phone number> PROJECT FUNDING BY: ParOF withYOU! ELSEGUNDO community Metro Notes: • Not to scale. • Sign is 8' x 4' with 1" corner radii. • Border to be 1.5" Wide. • All lettering and border colors to be black. • Background colors shall be white. • Lettering and logo heights: CITY OF ELSEGUNDOi 5„ M.......... ..................... IN _.................................�._........�.. EL SEGUNDO BOULEVARD �_..3�......._. IMPROVEMENTS PROJECT PW 23 02 ( ) �. _.._......... __ Website hone _......................_ .... 3" MIN m—IT— ^mm w� W...................... PROJECT FUNDING BY 2.5" MIN Metro Logo***o 6 MIN Cw.........._... it of EI Sec undo Lgo 9" MIN _. �___________________ _________.. ***All signage and communication material must conform to Los Angeles County Metropolitan Transportation Authority (LACMTA) "Metro" requirements. Metro's Funding Recipient Communications Guidelines are available online at htt a.lFmetro.neti rt�aers- ivic Agreement No. 6574 APPENDIX C EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PROJECT NO.: PW 23-02 CONSTRUCTION AND DEBRIS RECYCLING FORMS FOR THE CITY OF EL SEGUNDO (INCLUDED AS PART OF SECTION III, SPECIAL PROVISIONS) Agreement No. 6574 Agreement No. 6574 PW INSTRUCTIONS City of El Segundo Ff" Public Works Department ¢ ecS5 (310) 524-2300 Construction and Demolition Debris Waste Management Plan (WMP) PUBLIC WORKS PROJECTS (including MUNICIPAL ROAD CONSTRUCTION, OVERLAY, SIDEWALK REPAIR OR LAND CLEARING PROJECTS) INSTRUCTIONS Pursuant to the California Green Building Code of 2016 (2016 CALGreen), the City of El Segundo requires diversion (repurposed, reused, or recycled) of at least 65% of non -hazardous construction and demolition (C&D) debris from Public Works projects. A C&D Waste Management Plan must be submitted to the Public Works Department for municipal projects or projects on public property. The contents of this packet, when completed, constitute a C&D Debris Waste Management Plan (WMP). This packet is designed to track the amount of C&D debris diverted or disposed from your City -related (i.e. Public Works) project. If you believe your project cannot achieve the required diversion, you must complete and submit Form PW-D, the EXEMPTION REQUEST form, to the City (i.e. your Project Manager) explaining the circumstances, and requesting an exemption from the requirements. Ste 1. Complete Forms PW-A and, PW-B Form PW-A is the PROJECT INFORMATION form. This form asks for basic project information, such as name, type, description, location, and contractor contact information. Form PW-B is the PRE -PROJECT WORKSHEET form. This form asks for estimated amounts of debris that will be generated by the project. 0 ton I: If you are electing to contract with hauler(s) from the Authorized Hauler list who will handle recycling compliance on your behalf, complete Form PW-B (short form). Qption 2: If you will be handling all waste management activities (through direct hauling or use of own bins), complete Form PW-61. Estimate the weight of the C&D debris, by material type, that will be recycled, reused, salvaged, disposed and/or transformed from your project. You must complete either Form PW-B or PW-B1. Ste 2: Submit Forms to Public Works Forms PW-A and PW-B (or PW-131) must be submitted to your Public Works Project Manager and approved prior to commencing work. Ste : Complete POST-PROJECTSUMMARY - FORM PW-C At least 5 business days prior to contractor requesting release of final project retention, submit a completed FORM PW-C to your Public Works Project Manager. *NOTE* A FACILITY INFO list showing nearby companies that accept C&D materials for recycling is included in this packet. This list was developed to assist you in finding local facilities to use as an alternative to disposal. If you use a certified mixed C&D processing facility, your project will meet the diversion requirements. There are authorized haulers that do business in El Segundo. The HAULER LIST showing companies that are authorized to collect solid waste inEl Segundo is included in this packet. You must use one of these haulers if contracting for waste removal service. ror your convenience, there are electronic versions of the torms that will automatically calculate waste generation, disposal, and diversion based on the data entered. Rev. 12/4/2020 Agreement No. 6574 FORM PW-A City of El Segundo Date: Public Works Department PW Project Manager io �r•.�ti� (310) 524-2300 PW Project Name: Project Name Contractor Name: Mailing Address: Ofc Phone No.: Project Type: FORM PW-A - PROJECT INFORMATION Submit this form to the Public Works Department prior to commencing your project for all municipal Erpjects subject to compliance, or erojects opt public grogerty. Project Address / Location:. City / State / Zip: Cell No: Email: Mark appropriate box in each column with an "X": Road (construction, overlay, repair) Facility Improvement (renovation, alteration, or addition) USE FORMS PROVIDED BY EL SEGUNDO COMMUNITY DEVELOPMENT DEPT Land Clearing (trail, grading, etc.) E Other Estimated Project Start Date: Estimated Project End Date: Request for Exemption: D (If you are requesting an exemption, fill out Form PW-D: Exemption Request) To the best of my knowledge, the above information is an accurate representation of the proposed project. I have been made aware of the 2016 CALGreen requirements and will comply with all requirements. Print Name Approved Further Explanation Needed Reviewed By Signature ONLY -Approval Status Denied Exempt Due to Infeasibility Date Rev.12/4/2020 2 Agreement No. 6574 FORM PW-B City of El Segundo Date: Public Works Department PW Project Manager: ,_. (310) 524-2300 PW Project Name: � e FORM PW-B - PRE -PROJECT WORKSHEET - PUBLIC WORKS PROJECTS This form must be comi2feled and approved or a demolition I building permit will not be issued". Instead of completing a detailed accounting of the types and quantities of C&D debris that will be generated from this project (FORM PW-131), you have the option to select one of El Segundo's authorized waste haulers. These haulers can handle your project's debris in such a way as to comply with CALGreen standards. If you elect this option, please specify which authorized hauler(s) and/or facility(ies) you will be using and sign the acknowledgement below. El Segundo authorized hauler(s) and/or facility(ies) can be found on the City's website: htt ic-work§±ash� It is your responsibility to ensure that the hauler knows you are contracting for "C&D Recycling Service" so that the material is properly handled and waste diverted. You need to obtain weight tickets from the hauler indicating the type and weight of the material collected. In order to comply with the requirements of the WMP, I will contract with the following hauler(s): Hauler: understand that I am responsible for obtaining copies of any and all weight tickets from all haulers and/or facilities which receive debris from this project and that I will submit a Post -Project Summary (FORM PW-C) at least 5 business dgys phor io fi.(ral insise�ction, Print Name Signature Date Rev.12/4/2020 Agreement No. 6574 FROM PW-61 City of El Segundo Date: EL Public Works Department PW Project Manager: (310) 524-2300 PW Project Name: FORM PW-B1 - PRE -PROJECT WORKSHEET - PUBLIC WORKS PROJECTS [This form is to be completed only if you plan to use your own company -owned bins/trucks for disposition of material] This form must be com leted andaooroved or a demolition lbuildinypermit will riot be issued. In the table below, list estimated weight or cubic yards of debris that will be generated, recycled, reused, salvaged, disposed, and/or transformed by this project. You must include all recyclers, salvage companies, recycle facilities, mixed -use material recovery facilities, landfills, and/or transformation facilties that will be used for the project. List of materials to be generated from the project: ex, vood, moral, concrete, as hall, drywall, cardboard. mixed C&D debris, etc. TONS CUBIC YARDS Facilities to be Used Reused/Salvaged/Donated Ex.: Habitat for Humanity, Thirft Stores, regrind onsite, reuse fixtures, reuse dirt/concrete/as ph a I t Recycled A facility that accepts 100% recyclable materials to be turned into other products. Delivered to Mixed C&D Recycling Facilties that recover some materials for recycling Disposed/Landfilled/Transformed Transfer station, landfill, or SERRF Generated (total of above) I or my company elect not to use an authorized hauler because I or my company own containers (bins or roll -off boxes) Initial Here and/or dump vehicles and will not be contracting for debris removal services. I understand that I am responsible for obtaining copies of any and all weight tickets from all haulers and/or facilities Initial Here which receive debris from this project and that I will submit a Post -Project Summary (FORM PW-C) at least 5 business days' armor ta�„,4unal ur•�ctf�rti. Print Name Signature Rev.12/4/2020 3-A Agreement No. 6574 Form PW-C w City of El Segundo Public Works Department (310)524-2300 Project Name: Contractor Name: Project Number: Form PW-C - Post Project Summary Project Address: Project Manager: Date: This form must be submitted to the Public Works Department at least 5 business days prior to project finalization, Provide facility name, material, and total tonnage disposed and/or diverted Documentation must be attached (i.e, weight tickets). If an approved mixed waste processing facility was used, a report by the facility for this project is preferred. Return the completed form to the Public Works Department. You may use additional sheets if necessary. y a �� s authorized � If you used one of the City' rized haulers or facilities, complete this section, then skip to the SIGNATURE section below. use to meet the recycling requirements, Weight tickets are attached. (List haulers and/or facilities that were used) I. FACILITIES Illli' pptmn II Please list all facilities (i.e landfill and/or transformation, recycling/reuse/salvage, mixed C&D debris processing, materals recovery) used for this FACILITY NAME TONS DELIVERED TONS DIVERTED TONS DISPOSED DIVERSION RATE 1 2 3 4 Other (reused on site) TOTALS (A) C II �'�e.su ��II mt e enter disposal and dlverslon 9o9als for each item below, according to letter. Trrtals reported must match those listed in Section I TOTAL GENERATED ](A) TOTAL DIVERTED �(F3) TOTAL DISPOSED (C) OVERALL PROJECT DIVERSION RATE (B/A)"100 To the best of my knowledge, the above information is an accurate representation of the disposition of the construction and demolition materials generated on the jobsite, I understand that the City of El Segundo may audit disposal and recycling documentation for this project. Print Name Signature PW OFFICE USE ONLY Diversion Requirement Met: = Yes No Exemption: = Yes No Reviewed and Approved by: Date: Rev. 12/4/2020 Agreement No. 6574 Form PW-D pnojno Name: Contractor Name: Project Number: City ofBSegundo Public Works Department mm>xm-2000 Form PW-D - Exemption Request Project Address: Project Manager: If it is infeasible for you to comply with all of the requirements set forth by the Construction and Demolition Debris Recycling Form and you are requesting an infeasibilty exemption, please use the following space to explain why your project should be considered exempt from recycling PW OFFICE USE ONLY sxemnuvnA»nmvoo� F--� Yea F—� No Agreement No. 6574 EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PROJECT NO.: PW 23-02 STORMWATER POLLUTION PREVENTION PLAN Agreement No. 6574 f for El Segundo Boulevard Improvements Project City of El Segundo PW 23-02 WASTE DISCHARGE IDENTIFICATION NUMBER: I Legally Responsible Person (LRP) __.... ............ ......................... City of El Segundo Cheryl Ebert, PE, Senior Civil Engineer 310-524-2321, CEbert@ElSegundo.org Prepared for ELSEGUNDO City of El Segundo 350 Main Street, El Segundo, CA 90245 Estimated Project Dates Start of Construction February 1, 2023 End of Construction August 1, 2023 RISK LEVEL SWPPP Prepared by MNS Engineers, Inc. 100 E. Thousand Oaks Blvd, Suite 105 Thousand Oaks, CA 91360 (805) 648-4840 mnsengineers.com Sam Potts, PE C92519, QSD/QSP 27824 Preparation Date: August 26, 2022 Project Address El Segundo Boulevard, from Illinois Street to Isis Street Nash Street, from El Segundo Boulevard to Imperial Highway Douglas Street, from Rosecrans Avenue to Imperial Highway Continental Boulevard, from El Segundo Boulevard to Grand Avenue C:OoxlProjectslCIESE El SegundolCIESE 190174.00 El Segundo Boulevard lmprovements112 EngIH&HISWPPPISWPPP ESB docx J ?r Agreement No. 6574 Tableof Contents .......... I ..................... .......»» ...».-.......... ..,»,..». ».».........,.,... »....».»» ...,......,»,.. 2 QualifiedSWPPP Developer .. ........ .....__ ».»...»»,..........................................,..,.». »»»»......., 6 LegallyResponsible Person ............. .» ..... ,..,.V»»»..».»..................»............................ .......».....,............ 7 AmendmentLog ................... .....................I .................. .... I .............. .,...,.......W»»...... I ...... ....»* 8 Section 1 SWPPP Requirements.................................................. ......................... »....... 9 1.1 Introduction............................................................................................................................ 9 1.2 Permit Registration Documents ...................... ...................... ................„,..., ,,....,...,...,..,......... 9 1.3 SWPPP Availability and Implementation ................. ......................... .......... ....,.,............ ....,,... 10 1.4 SWPPP Amendments.......................................................................................................... 10 1.5 Retention of Records.............................................................. 11 1.6 Required Non -Compliance Reporting ................ ................. ........ 12 1.7 Annual Report ................................................... ............,...., 12 1.8 Changes to Permit Coverage ............................. ................. ......... .,.....,...,.. ,,........... 12 1.9 Notice of Termination............................................................................................................ 12 Section 2 Project Information ........ .................... ..................... ...... ..................,.... 13 2.1 Project and Site Description ................................ ................. ......... ..................,. 13 2.1.1 Site Description ............................................ ........................... ..,,,........,........................... 13 2.1.2 Existing Conditions ........................................ .................. ......... ................. ............ 13 2.1.3 Existing Drainage ....................................... ................ ..,...... .........,...,.,,..... .....,.... 13 2.1.4 Geology and Groundwater................................................................................................ 14 2.1.5 Project Description .......................................... ........ ......... ......... .................. ............ 14 2.1.6 Developed Condition........................................................................................................ 15 2.2 Permits and Governing Documents...................................................................................... 15 2.3 Stormwater Run -On from Offsite Areas.............................................................................».. 15 2.4 Findings of the Construction Site Sediment and Receiving Water Risk Determination.....,,,,, 15 2.5 Construction Schedule......................................................................................................... 17 2.6 Potential Construction Activity and Pollutant Sources........................................................... 17 2.7 Identification of Non-Stormwater Discharges..... ......... 17 2.8 Required Site Map Information ........................... ........ ............ .. ...... ........ ............ 18 Section3 Best Management Practices .... ................... „....... .....»» ..... ,...... 20 3.1 Schedule for BMP Implementation....................................................................................... 20 3.2 Erosion and Sediment Control.............................................................................................. 21 3.2.1 Erosion Control ................................................ .................. ............. ............................... 21 El Segundo Boulevard Improvements Project 2 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 3.2.2 Sediment Controls........................................................................... _.................,.,......... 24 3.3 Non-Stormwater Controls and Waste and Materials Management,... _ ... - ... ... ....... __ ..... _ 27 3.3.1 Non-Stormwater Controls ............................................. ............,............................ ............ 27 3.3.2 Materials Management and Waste Management ........... ....... ......................... _........... ___ 30 3.4 Post construction Stormwater Management Measures........................................................ 32 Section4 BMP Inspection and Maintenance.............„...,............,............................... 33 4.1 BMP Inspection and Maintenance......................................................................................... 33 4.2 Rain Event Action Plans...................................................................................................9... 33 Section5 Training....................................................................................................... 34 Section 6 Responsible Parties and Operators ............................................... ,.......... 35 6.1 Responsible Parties............................................................................................................. 35 6.2 Contractor List..................................................................................................................._ 35 Section 7 Construction Site Monitoring Program ...................................................,.. 36 7.1 Purpose................................................................................................................................36 7.2 Applicability of Permit Requirements.................................................................................... 36 7.3 Weather and Rain Event Tracking........................................................................................ 36 7.3.1 Weather Tracking.....................................................................................................a....... 36 7.3.2 Rain Gauges.............................................................................................................__... 36 7.4 Monitoring Locations............................................................................................................ 37 7.5 Safety and Monitoring Exemptions....................................................................................... 37 7.6 Visual Monitoring......................................................................................................_ ........ 37 7.6.1 Routine Observations and Inspections............................................................................. 38 7.6.1.1 Routine BMP Inspections.......................................................................................... 38 7.6.1.2 Non-Stormwater Discharge Observations................................................................. 38 7.6.2 Rain -Event Triggered Observations and Inspections........................................................ 38 7.6.2.1 Visual Observations Prior to a Forecasted Qualifying Rain Event ............................. 39 7.6.2.2 7.6.2.2 BMP Inspections During an Extended Storm Event ....................................... 39 7.6.2.3 Visual Observations Following a Qualifying Rain Event ............................................ 39 7.6.3 Visual Monitoring Procedures........................................................................................... 39 7.6.3.1 Visual Monitoring Follow-up and Reporting............................................................... 40 7.6.3.2 Visual Monitoring Locations...................................................................................... 40 7.7 Water Quality Sampling and Analysis................................................................................... 40 7.7.1 Sampling and Analysis Plan for Non -Visible Pollutants in Stormwater Runoff Discharges 40 7.7.1.1 Sampling Schedule................................................................................................... 41 7.7.1.2 Sampling Locations................................................................................................... 42 El Segundo Boulevard Improvements Project 3 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 7.7.1.3 Monitoring Preparation.............................................................................................. 42 7.7.1.4 Analytical Constituents.............................................................................................. 43 7.7.1.5 Sample Collection..................................................................................................... 45 7.7.1.6 Sample Analysis....................................................................................................... 45 7.7.1.7 Data Evaluation and Reporting................................................................................. 46 7.7.2 Sampling and Analysis Plan for pH and Turbidity in Stormwater Runoff Discharges.,...,..,. 47 7.7.2.1 Sampling Schedule................................................................................................... 47 7.7.2.2 Sampling Locations................................................................................................... 47 7.7.2.3 Monitoring Preparation.............................................................................................. 47 7.7.2.4 Field Parameters...................................................................................................... 48 7.7.2.5 Sample Collection..................................................................................................... 49 7.7.2.6 Field Measurements................................................................................................. 49 7.7.2.7 Data Evaluation and Reporting................................................................................. 50 7.7.3 Sampling and Analysis Plan for pH, Turbidity, and SSC in Receiving Water ..................... 50 7.7.4 Sampling and Analysis Plan for Non-Stormwater Discharges ........................................... 50 7.7.5 Training of Sampling Personnel........................................................................................ 50 7.7.6 Sample Collection and Handling....................................................................................... 50 7.7.6.1 Sample Collection..................................................................................................... 50 7.7.6.2 Sample Handling...................................................................................................... 51 7.7.6.3 Sample Documentation Procedures.......................................................................... 52 7.8 Active Treatment System Monitoring.................................................................................... 53 7.9 Bioassessment Monitoring................................................................................................... 53 7.10 Watershed Monitoring Option............................................................................................v.. 53 7.11 Quality Assurance and Quality Control................................................................................. 53 7.11.1 Field Logs......................................................................................................................... 53 7.11.2 Clean Sampling Techniques...............,, .............. ...................... 53 7.11.3 Chain of Custody .................................. .................. ........, ............,. ,...,. 54 7.11.4 QA/QC Samples ................................... ..................................... ....... ...... ............... 54 7.11.4.1 Field Duplicates .................... ---- ........ . ...............,...... .,..,................ 54 7.11.4.2 Equipment Blanks...........................................,.................................,,.. 54 7.11.4.3 Field Blanks ...................................................................... 54 7.11.4.4 Travel Blanks ................................. ............................. ........ .................. ............. 54 7.11.5 Data Verification ................................... ,,...... .....,..,.....,......,... ..........,....... ,......,,... 55 7.12 Records Retention ..................................... ,.,..._.....,,,.....,,.....................,................,..... 56 CSMPAttachment 1: Weather Reports ............. ................. »»..».. ................... ....»..............» 57 El Segundo Boulevard Improvements Project 4 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 CSMP Attachment 2: CSMP Attachment 3: CSMP Attachment 4: CSMP Attachment 5: Section 8 Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Appendix G Appendix H Appendix I Appendix J Appendix K Appendix L Appendix M Monitoring Records .... ............. »..»......................... ........ .....».. .......».... 58 ExampleForms .... .................M......»»............................ ............»........... 59 FieldMeter Instructions .......... ......... ........ .................. ......... .......... 66 Supplemental Information .......... ................ ....................................... 67 References................................... .................. ...».......................................... 68 Calculations.................................... ............................. ......................69 SiteMaps .................................................... ...,,.... _........................................ 72 PermitRegistration Documents................».............»................................. 73 SWPPP Amendment Certifications.....................................».................... 74 Submitted Changes to PRDs....................».....»»..................................»..... 75 ConstructionSchedule ........... ...„... ............... ....»..-.................. 76 Construction Activities, Materials Used, and Associated Pollutants .... 77 CASQA Stormwater BMP Handbook Portal: Construction Fact Sheets 93 BMP Inspection Report ............................................................................. 81 Training Reporting Form.......................................................................... 87 ResponsibleParties .......................... »........... ................................... ......... 88 Contractors and Subcontractors.............................................................. 92 Construction General Permit ....................................................... »»...... ...., 94 El Segundo Boulevard Improvements Project 5 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Qualified I Approval and Certification of the Stormwater Pollution Prevention Plan Project Name: E/ Segundo Boulevard Improvements Project City of El Segundo PW 23-02 MNS Engineers Project No. 190174.00 Project Number/ID WDID # TBD "This Stormwater Pollution Prevention Plan and Attachments were prepared under my direction to meet the requirements of the California Construction General Permit (SWRCB Orders No. 2009-009-DWQ as amended by Order 2010-0014-DWQ and Order 2012-0006-DWQ). I certify that I am a Qualified SWPPP Developer in good standing as of the date signed below." QSD Signature QSD Name Title and Affiliation spofts@mnsengineers.com Entail El Segundo Boulevard Improvements Project Preparation Date August 26, 2022 August 26, 2022 Date 27824 QSD Certificate Number (805) 719-9817 Tele hone.���.���_._---r-- p mb--e--r-- 6 CASQA SWPPP Template January 2015 Agreement No. 6574 Legally Responsible Person Approval and Certification of the Stormwater Pollution Prevention Plan Project Name: El Segundo Boulevard Improvements Project City of El Segundo PW 23-02 Project Number/ID [if applicable] WDJD # TBD "I certify under penalty of law that this document and all Attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." City of El Segundo Legally Responsible Person 01 Signature of Legally Responsible Person or Date Approved Signatory Cheryl Ebert, PE Senior Engineer, City of El Segundo Name of Legally Responsible Person or Approved Signatory El Segundo Boulevard Improvements Project 7 Preparation Date August 26, 2022 310-524-2321 Telephone Number CASQA SWPPP Template January 2015 Agreement No. 6574 Amendment Log Project Name; El Segundo Boulevard Improvements Project City of El Segundo PW 23-02 Project Number/ID WDID # TBD El Segundo Boulevard Improvements Project 8 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Section SWPPP MIEEUff*_10• The El Segundo Boulevard Improvements Project is a City of El Segundo Capital Improvement Project comprising of approximately 26 acres and is located between Lhe fulluwiny street limits in El Segundo, California. • El Segundo Boulevard: Illinois Street to Isis Street • Nash Street: El Segundo Boulevard to Imperial Highway • Douglas Street: Rosecrans Avenue to Imperial Highway • Continental Boulevard: El Segundo Boulevard to Grand Avenue The streets are located within public rights -of -way. The project's location is shown on the Site Map in Appendix B. This Stormwater Pollution Prevention Plan (SWPPP) is designed to comply with California's General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (General Permit) Order No. 2009-0009-DWQ as amended in 2010 and 2012 (NPDES No. CAS000002) issued by the State Water Resources Control Board (State Water Board). This SWPPP has been prepared following the SWPPP Template provided on the California Stormwater Quality Association Stormwater Best Management Practice Handbook Portal: Construction (CASQA, 2012). In accordance with the General Permit, Section XIV, this SWPPP is designed to address the following: • Pollutants and their sources, including sources of sediment associated with construction, construction site erosion and other activities associated with construction activity are controlled; Where not otherwise required to be under a Regional Water Quality Control Board (Regional Water Board) permit, all non-stormwater discharges are identified and either eliminated, controlled, or treated; • Site BMPs are effective and result in the reduction or elimination of pollutants in stormwater discharges and authorized non-stormwater discharges from construction activity to the Best Available Technology/Best Control Technology (BAT/BCT) standard; Calculations, as shown in Appendix A, and design details as well as BMP controls for are complete and correct. Required Permit Registration Documents (PRDs) shall be submitted to the State Water Board via the Stormwater Multi Application and Report Tracking System (SMARTS) by the Legally Responsible Person (LRP), or authorized personnel (i.e., Approved Signatory) under the direction of the LRP. The project -specific PRDs include: 1. Notice of Intent (NOI); 2. Risk Assessment (Construction Site Sediment and Receiving Water Risk Determination); 3. Site Map; 4. Annual Fee; 5. Signed Certification Statement (LRP Certification is provided electronically with SMARTS PRD submittal); and El undo Boulevard Improvements Project .9 µmmmmmmmmm CASQA SWPPP Template ._ Seg.._....._...... p_.._...--...._._.. 1 Preparation Date August 26, 2022 January 2015 Agreement No. 6574 6. SWPPP. Site Maps can be found in Appendix B. A copy of the submitted PRDs shall also be kept in Appendix C along with the Waste Discharge Identification (WDID) confirmation. The discharger shall make the SWPPP available at the construction site during working hours (see Project Specifications for working hours) while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, current copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio/telephone. (CGP Section XIV.C) The SWPPP shall be implemented concurrently with the start of ground disturbing activities The SWPPP should be revised when: • There is a General Permit violation. • There is a reduction or increase in total disturbed acreage (General Permit Section II Part C). • BMPs do not meet the objectives of reducing or eliminating pollutants in stormwater discharges. Additionally, the SWPPP shall be amended when: • There is a change in construction or operations which may affect the discharge of pollutants to surface waters, groundwater(s), or a municipal separate storm sewer system (MS4); • There is a change in the project duration that changes the project's risk level; or • Deemed necessary by the QSD. The QSD has determined that the changes listed in the following table can be field determined by the QSP. All other changes shall be made by the QSD as formal amendments to the SWPPP. The following items shall be included in each amendment: • Who requested the amendment; • The location of proposed change; • The reason for change; • The original BMP proposed, if any; and • The new BMP proposed. Amendment shall be logged at the front of the SWPPP and certification kept in Appendix D. The SWPPP text shall be revised replaced, and/or hand annotated as necessary to properly convey the amendment. SWPPP amendments must be made by a QSD. The following changes have been designated by the QSD as "to be field determined" and constitute minor changes that the QSP may implement based on field conditions. El Segundo Boulevard Improvements Project 10 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 1.1 List of Changes to be Field Determined Candidate changes for field location or Check changes that can be field determination by QSPM located or field determined by QSP Increase quantity of an Erosion or Sediment ✓ Control Measure Relocate/Add stockpiles or stored materials -- Relocate or add toilets ✓ Relocate vehicle storage and/or fueling locations Relocate areas for waste storage mRelocate ✓ water storage and/or water transfer ✓ location Changes to access points (entrance/exits) Change type of Erosion or Sediment Control Measure Changes to location oferosion^m g or sediment control ✓ Minor changes to schedule or phases ✓ Changes in construction materials ..............._ ...._..e 1 An field changes not identified () y g ffeed for field location or field determination by QSP must be approved by QSD 1.5 RETENTION OF RECORDS Paper or electronic records of documents required by this SWPPP shall be retained for a minimum of three years from the date generated or date submitted, whichever is later, for the following items: • Daily Monitoring Records • Weekly Inspection and Monitoring Records • All Sampling and Test Data • All SWPPP Amendments • Temporary Water Pollution Plans and changes • Annual Report Records • Notice of Termination Records • All other documents deemed worthy of record retention by the QSD or QSP These records shall be available at the Site until construction is complete. Records assisting in the determination of compliance with the General Permit shall be made available within a reasonable time, to the Regional Water Board, State Water Board or U.S. Environmental Protection Agency (EPA) upon request. Requests by the Regional Water Board for retention of records for a period longer than three years shall be adhered _...__.................. _........ to. El Segundo Boulevard Improvements _.._........................ m.....��. g Project 11 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 If a General Permit discharge violation occurs the QSP shall immediately notify the LRP. The LRP shall include information on the violation with the Annual Report. Corrective measures will be implemented immediately following identification of the discharge or written notice of non-compliance from the Regional Water Board. Discharges and corrective actions must be documented and include the following items: • The date, time, location, nature of operation and type of unauthorized discharge. • The cause or nature of the notice or order. The control measures (BMPs) deployed before the discharge event, or prior to receiving notice or order. The date of deployment and type of control measures (BMPs) deployed after the discharge event, or after receiving the notice or order, including additional measures installed or planned to reduce or prevent re -occurrence. [include any other relevant reporting requirements.] The General Permit requires that permittees prepare, certify, and electronically submit an Annual Report no later than September 1 st of each year. Reporting requirements are identified in Section XVI of the General Permit. Annual reports will be filed in SMARTS and in accordance with information required by the on-line forms. The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when: a portion of the project is complete and/or conditions for termination of coverage have been met; when ownership of a portion of the project is purchased by a different entity; or when new acreage is added to the project. Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, shall be logged at the front of the SWPPP and cetrification of SWPPP amendments are to be kept in Appendix D. Updated PRDs submitted electronically via SMARTS can be found in Appendix E. A Notice of Termination (NOT) must be submitted electronically by the LRP via SMARTS to terminate coverage under the General Permit. The NOT must include a final Site Map and representative photographs of the project site that demonstrate final stabilization has been achieved. The NOT shall be submitted within 90 days of completion of construction. The Regional Water Board will consider a construction site complete when the conditions of the General Permit, Section II.D have been met. El Segundo Boulevard Improvements Project 12 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 The El Segundo Boulevard Improvements Project site comprises approximately 26.7 acres and is located in El Segundo, California. The project site is located approximately 2.4 miles east of El Segundo Beach (Pacific Ocean). The center of the project is located at 33.916,-118.388 and is identified on the Site Map in Appendix B. 2.1.2 Existing Conditions As of the initial date of this SWPPP, the project site is developed, paved roadway. Historic sources of contamination include former industrial operations. 2.1.3 Existing Drainage The project site is relatively level. The elevation of the project site ranges 90 to 100 feet above mean sea level (msl). Surface drainage at the site currently flows to the southeast, towards City Pump Station No. 18. As a localized sump, the sump ha pumps that allow for overflow to go into the Dominguez Channel, which outlets into the San Pedro Bay (Pacific Ocean) at the Port of Los Angeles. Another storm drain system bypasses the pump station and outlets directly to the Dominguez Channel. A small portion of the project west of Pacific Coast Highway is tributary to Los Angeles County Flood Control District pump lines that outlet to the Pacific Ocean near El Segundo Beach. Stormwater is conveyed through surface runoff and storm drain systems of multiple owners (City of El Segundo, Los Angeles County Flood Control District). Stormwater discharges, from the site, are considered direct discharges into the Dominguez Channel, as defined by the State Water Board. Existing site topography, drainage patterns, and stormwater conveyance systems are shown on the Temporary Water Pollution Control Plans (TWPC's). The, project discharges to receiving water bodies listed for water quality impairment on the most recent 303(d)-list as shown below: Table 2.1 Watershed 303(d) Listings > OttZi+ IC W O L- Q M W M W d a O L t % a C (D C C M a C d Z y M > t a) M t O .-. J J `-' i1 m M v U> U m j L j M N co d C d > d Q.Q o O C L 0 0 0)c �� C2 C= L- dN Y w` -o E 1E ��E E' Q� a) Q y., aL Pollutant U O o c ev M a) O O rn z o a O 0 o> O r- —i S O d d) E O M R t cn cn _._........._....w ........_ Arsenic ._. .....................�m X EI Segundo Boulevard Improvements Project 13 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 DDT,-........._._..����...�......—.....�,�...........�......�...�........._.� (Dichlorodiphenyltrichloroethane) X X ,_...�.�.�.......... X —._..... ...�.. ...... _ i DD T (tissue &sediment) � ..._� ...,'. X ..... ru ��.��........_. .. Total....... —(sum al DDT (sum of 4,4'-and 2,4'- isomers of DDT, DDE, and DDD) X ...._........_ ..._..... .... ... ......r ...Mercury X .............. �.... _ _---------- ...... PC...Bs(P�_ olychlorir"i" nate"..... d bipheny..__ ls")--..-_) .X. ' ,..X .......... �-....X_ , X . e� X Trash X � �..��............�. �� .�.........._ ................ Indicator B��._.ctec Wd. r i a ....................... ........_.w. a X. _ m,.------ .. X ......... X . ............... ._ ------------ �e........................ ............�...... Co -pp �.wm.._�. —. �.�.................�.......... _ X X .......... w X �_.....�...�....� Lead__���.. _..... _— X ----�---- .m�. _ ..._......... Toxicity X ....................X X. ..... _.......��.-X....... ..... X Zinc.......,,._y--- -..� ... X X ..........._ _........ _.... ......... Benthic Community Effects _...._...... _.............. X �. X �.....����.....� .............. e ,� Benzo(a)anthracene ...................re.. _......... X � �.- . ..... . .. _.w . .��....... Benzo(a)pyrene (3,4-Benzopyrene ............. X ----.... _ _.._.._...._. -7-d) X .... rdane _. Chlo � . X�j Chlordane (tissue) �...'.........�....� _ X Ch sene C1 _ ...... . - _.-..... X X Di eldrin ti_......... �� ( ssue�) _�. _......�.. ___ X �.�.......-........... . . _nth...t-h- . rene.. Phena ............. ...e. .__..___� .. _. ............ Pyrene_.......... .................. w. _ ............._w The site is typically underlain by road base materials and sandy loams. See project geotechnical report for pavement drill hole data. Groundwater occurs beneath the site at approximately 70 feet below ground surface. � Project grading and soil disturbance will occur on approximately 2.7 acres of the project, which comprises approximately 10% of the total area. The limits of grading are shown on Temporary Water Pollution Control Drawings in Appendix B. Grading will include both cut and fill activities, with the total graded material estimated to be 2,600 cubic yards. Approximately 900 cubic yards of fill material (including roadway base material) will be imported during grading activities. Graded materials are expected to be hauled away. Soil will be stockpiled as shown on the Temporary Water Pollution Control Drawings in Appendix B. Construction activities will be phased by the Contractor as shown in the Schedule in Appendix F. El Segundo Boulevard Improvements Project 14 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 2.1.6 Developed Condition This project's developed condition will be constructing facilities within the existing topography and will not affect drainage patterns (see discussion above in 'Existing Drainage'). Table 2.1 Construction Site Estimates Construction site area 26.7 acres Disturbed soil area 2.7 acres Percent im erviou ................. ... p s before construction ......._ 90 Runoff coefficient before construction 0.80 .._W___________ envious after construction -�_ Percent imp 91 % Runoff coefficient after construction 0..81 In addition to the General Permit, the following documents have been taken into account while preparing this SWPPP • Regional Water Board requirements • Basin Plan requirements • Contract Documents • Air Quality Regulations and Permits o South Coast Air Quality Management District o See dust control requirements • Los Angeles County Regional MS4 Permit (Order No. R4-2021-0105) • City Code of El Segundo, California o Reference: Title 5, Chapters 4 and 7 Run-on to the site is generated by point source discharges and non -point source discharges (stormwater runoff) from upgradient developed land uses. The stormwater runoff tributary area and flow contributing to offsite run-on are included in the Site Maps in Appendix B. The anticipated runoff coefficients range from 0.6 to 0.95. The General Permit requires that temporary BMPs be implemented to direct offsite run-on away from disturbed areas through the use of runoff controls. The following BMPs will be implemented: bypass/ diversion pipe. The contractor shall locate and install these facilities. 2.4 FINDINGS ION SITE SEDIMENT AND RECEIVING WATER RISK DETERMINATION A construction site risk assessment has been performed for the project and the resultant risk level is Risk Level 1. .......... �_m _. _ .._._. ................. El Segundo Boulevard Improvements Project 15 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 The risk level assessment was based on project duration, location, proximity to impaired receiving waters and soil conditions. A copy of the Risk Level determination submitted on SMARTS with the PRDs is included in Appendix C. Table 2.2 and Table 2.3 summarize the sediment and receiving water risk factors and document the sources of information used to derive the factors. Table 2.2 Summary of Sediment Risk -. Value Method d for establishing RUSLE............ ............. Factor g value .......... R13.64 LEW EPA...............___�...........�.�__��........................................ K 0.25 Caltrans Water Quality Planning Tool, Area.......... Weighted LS 0.68 Caltrans Water Quality Planning Tool, Area Weigh ted Total Predicted Sediment Loss (tons/acre)....2.�3.................... Overall Sediment Risk ® Low Low Sediment Risk < 15 tons/ acre ❑ Medium Medium Sediment Risk >= 15 and < 75 tons/acre F] High ... tons/acre igh Sediment Risk >= 75 t................_.� Runoff from the project site discharges into storm drains that discharge into either Dockweiler Beach / Santa Monica Bay or Dominguez Channel / Los Angeles Harbor / San Pedro Bay. Table 2.3 Summary of Receiving Water Risk _.... Receiving Water N� g Name 303 d Listed for Sediment TMDL for Sediment Beneficial Uses of f COLD, SPAWN and ... �w_ Related Pollutant (.'� Related Pollutant0) , MIGRATORY �') Dockweiler Beacmmmmm_._........ h _......_®.. ❑ Yes No ❑ Yes ® No ❑ Yes ® No __.oni....In i'ca.....Bay ........_. Santa M Offshore / Nearshore � ...... .......... _ El Yes ® No ❑ Yes ® No ❑ Yes ® No Dominguez Channel g . ��_.�...........� ........ (lined portion above ❑ Yes ® No ❑ Yes ® No ❑ Yes ® No Vermont Ave) Dominguez Channel Estuary (unlined portion ❑ Yes ® No ❑ Yes ® No ❑ Yes ®No below Vermont Ave) Los Angeles/Long Beach Inner Harbor ❑ Yes ® No ❑ Yes _ ® No _�..................... ❑ Yes ® No mLos WAn Angeles/Long ._��................ g g Beach .................. ....w m ............... . Outer Harbor (inside ❑ Yes ® No ❑ Yes ® No ❑ Yes ® No breakwater) San Pedro Bay Near/Off _.... ........ Shore Zones ❑ Yes ® No ❑ Yes ® No ❑ Yes ® No El Segundo Boulevard Improvements Project 16 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 2.3 Summary of Receiving Water Risk ^m Name 303(d) for TM.D.L...for...Sediment COLD, SPAWN, and f Receiving Watera Related Related Pollutant0) AWN, and _ Pollutant MIGRATORY �') Overall ReceivingRisk Water .�... _.............................. � w..._��...�_............� �,,. . ® Low ❑ High (1) If yes is selected for any option the Receiving Water Risk is High Risk Level 1 sites are subject to the narrative effluent limitations specified in the General Permit. The narrative effluent limitations require stormwater discharges associated with construction activity to minimize or prevent pollutants in stormwater and authorized non-stormwater through the use of controls, structures, and best management practices. This SWPPP has been prepared to address Risk Level 1 requirements (General Permit Attachment C). 2.5 CONSTRUCTION SCHEDULE The site sediment risk was determined based on construction taking fourth calendar months. Extension of the schedule (start and end dates) may affect risk determination and permit requirements. The LRP shall contact the QSD if the schedule changes during construction to address potential impact to the SWPPP. The estimated schedule for planned work can be found in Appendix F. POTENTIAL2.6 ION ACTIVITY AND POLLUTANT Appendix G includes a list of construction activities and associated materials that are anticipated to be used onsite. These activities and associated materials will or could potentially contribute pollutants, other than sediment, to stormwater runoff. The anticipated activities and associated pollutants were used in Section 3 to select the Best Management Practices for the project. Location of anticipated pollutants and associated BMPs are show on the Site Map in Appendix B. For sampling requirements for non -visible pollutants associated with construction activity please refer to Section 7.7.1. For a full and complete list of onsite pollutants, refer to the Material Safety Data Sheets (MSDS), which are retained onsite at the construction trailer. 2.7 IDENTIFICATION OF NON-STORMWATER DISCHARGES Non-stormwater discharges consist of discharges which do not originate from precipitation events. The General Permit provides allowances for specified non-stormwater discharges that do not cause erosion or carry other pollutants. Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit and listed in the SWPPP, or authorized under a separate NPDES permit, are prohibited. Non-stormwater discharges that are authorized from this project site include the following: • Fire hydrant and pipe flushing/testing a Irrigation of vegetative erosion control measures El Boulevard Segundo ...�.� ..�...........__ .._.._m__.. w�w�....__......... .-._� ._.................. g ~rd Improvements Project 17 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 • Water used for dust control • Uncontaminated groundwater dewatering • Other discharges not subject to a separate general NPDES permit adopted by the region These authorized non-stormwater discharges will be managed with the stormwater and non-stormwater BMPs described in Section 3 of this SWPPP and will be minimized by the QSP. Activities at this site that may result in unauthorized non-stormwater discharges include: • Vehicle and equipment cleaning, fueling, and maintenance operations • Vehicle and equipment wash water, including concrete washout water; • Slurries from concrete cutting and coring operations, PCC grinding or AC grinding operations; • Slurries from concrete or mortar mixing operations; • Slurries from drilling or boring operations; • Blast residue from high-pressure washing of structures or surfaces; • Wash water from cleaning painting equipment; • Runoff from dust control applications of water or dust palliatives; • Sanitary and septic wastes; • Chemical leaks and/or spills of any kind including but not limited to petroleum, paints, cure compounds, etc. Steps will be taken, including the implementation of appropriate BMPs, to ensure that unauthorized discharges are eliminated, controlled, disposed, or treated on -site. Discharges of construction materials and wastes, such as fuel or paint, resulting from dumping, spills, or direct contact with rainwater or stormwater runoff, are also prohibited. 2.8 REQUIRED SITE MAP INFORMATION The construction project's Site Map(s) showing the project location, surface water boundaries, geographic features, construction site perimeter and general topography and other requirements identified in Attachment B of the General Permit is in Appendix B. The following table identifies documents where required elements are illustrated. Table 2.5 Required Map Information .............. _..._. _.......w _... Included on Map/Plan Required Element Sheet No. .........._ ................... Vicinity Map The project's surrounding area (vicinity) ........ w _... ._............ Project Plans Site layout .._........... .. ..._........ ........ Project Plans Construction site boundaries e TWPC's Drainage g areas TWPC's Discharge locations......... El Segundo Boulevard Improvements Project 18 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 2.5 Required Map Information Included on Map/Plan Required Element Sheet No. TWPC's Sampling locations TW..,... �...........��..�__....... .........-.��......... „m PC's Areas of soil disturbance (temporary or permanent) ......_­_­.............. . w....._ TWPC's Active areas of soil disturbance (cut or fill) TWPC's Locations of runoff BMPs TWPC's............... Locations of erosion control BMPs TWPC's Locations of sediment control BMPs TW`PC's ATS location (if applicable) TWPC's Locations of sensitive habitats, watercourses, or other features which are not to be disturbed ITTWPC's Locations ocations of all post -construction BMPs ..._.. .._. ------------ .. .................. Waste storage ......... TWPC's a areas TWPC's Vehicle storage areas TWPC's Material storage areas TWPC's Entrance and Exits TWPC's Fueling Locations The contractor shall review and amend the site map on a once -every -two -months basis. El Segundo Boulevard Improvements Project 19 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Tab|o3Li BKUPImplementation Schedule BMP Implementation Duration EC-1, Scheduling Prior to Entirety oF - — ----- - ----- Construction Project EC-2, Preservation of Existing Vegetation Start of Entirety of Construction Project EC-6, Straw Mulch Grading Through site stabilization 0 0 0 EC-8, Wood Mulching Grading Through site 0 stabilization EC-15, Soil Preparation / Roughening Grading Through site stabilization EC-16, Non -vegetative stabilization Start of Through site Construction stabilization SE-3, Sediment Trap Start of Through site Construction stabilization E SE-4, Check Dams Start of Through site Construction stabilization SE-5, Fiber Rolls Grading Through site stabilization BSegundo Boulevard Improvements Project 20 CASQASWPPPTemplate Agreement No. 6574 Table 3.1 BMP Implementation Schedule ......� .......�.� BM�P ..... ..._..........�_�� ImplementationW _............. A. Duration SE-6, Gravel Bag Berm n/a n/a SE-7, Street Sweeping and Vacuuming Streets Entirety of project SE-8, Sandbag Barrier n/a n/a SE-9, Straw Bale Barrier n/a n/a SE-10, Storm Drain Inletmw...��_... Protection Start of .........._ Construction ................_._.__... s_.� Entirety of project SE-11, Active Treatment Systems n/a n/a S... --. r Sediment E-12, Manufactured Linear .......... - n/a ............._......... ............�. n/a Cont SE-13, Compost Socks and Berms n/a n/a SE-14, Biofilter Bags n/a n/a TC-__. Stabilized Construction Entrance ..... _._... / �............. __�. Start of _ � ............ Entirety of 6 Exit Construction project _ c _ ....... ......mmm..�. TC -2 StabilizedConstructionRoadway __________�___� n/a _....�............���. project/a LV ...................................�. ........................... ...�... TC 3 Entrance / Outlet Tire Wash __ .. .... ....�. n/a _.............� n/a M 2 _ ' ion Control Erosion WE-1 Wind Er Start of Construction Entirety of project G w Erosion and sediment controls are required by the General Permit to provide effective reduction or elimination of sediment related pollutants in stormwater discharges and authorized non-stormwater discharges from the Site. Applicable BMPs are identified in this section for erosion control, sediment control, tracking control, and wind erosion control. 3.2.1 Erosion Control Erosion control, also referred to as soil stabilization, consists of source control measures that are designed to prevent soil particles from detaching and becoming transported in stormwater runoff. Erosion control BMPs protect the soil surface by covering and/or binding soil particles. This construction project will implement the following practices to provide effective temporary and final erosion control during construction: 1. Preserve existing vegetation where required and when feasible. El Segundo Boulevard I _. _._.. .._......__.._ g Improvements Project 21 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 2. The area of soil disturbing operations shall be controlled such that the Contractor is able to implement erosion control BMPs quickly and effectively. 3. Stabilize non -active areas within 14 days of cessation of construction activities or sooner if stipulated by local requirements. 4. Control erosion in concentrated flow paths by applying erosion control blankets, check dams, erosion control seeding or alternate methods. 5. Prior to the completion of construction, apply permanent erosion control to remaining disturbed soil areas. Sufficient erosion control materials shall be maintained onsite to allow implementation in conformance with this SWPPP. The following erosion control BMPs shall be implemented to control erosion on the construction site. Fact Sheets for temporary erosion control BMPs are provided in Appendix L. These temporary erosion control BMPs shall be implemented in conformance with the following guidelines and as outlined in the BMP Factsheets provided in Appendix L. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets. In the following list, if the `BMP used by Contractor' field is marked `No', Contractor shall state reason and alternate BMP as applicable. EC-1 Scheduling Minimum Requirement Yes BMP used by Contractor Yes On a regularly scheduled weekly basis, the contractor superintendent or other supervisorial representative shall meet with the project QSP(s) to discuss the one -week lookahead on the construction schedule, the weather schedule (i.e. forecast), and the BMP implementation schedule. Topics should include performance of BMPs over the past week, improvements of those BMPs for the following week, and new BMPs that may be required due to the schedule lookahead. EC-2 Preservation of Existing Vegetation Minimum Requirement Yes BMP used by Contractor Yes Areas within and around the site where no construction activity is occurring should not be disturbed. Several trees are identified on the project plans as "protect -in -place". Vegetation that is designated for ultimate removal can be temporarily preserved and be utilized for erosion and sediment control. EC-3 Hydraulic Mulch Minimum Requirement BMP used by Contractor No No use wood mulch May be used on slopes steeper than 5:1 (H:V) to stabilize at least three (3) days prior to rain. Use in conjunction with a tackifier (soil binder). EC-4 Hydroseed Minimum Requirement No El Segundo Boulevard Improvements Project 22 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 BMP used by Contractor No use wood mulch May be used on slopes steeper than 10:1 (H:V) to stabilize at least three (3) days prior to rain. EC-5 Soil Binders Minimum Requirement No BMP used by Contractor No Soil binders shall be used where rough graded soils will be inactive for a short period of time, disturbed areas subject to significant winds, and along slopes requiring stabilization prior to rain. They may also be used on stockpiles. They shall be used under temporary roadways prior to placement of crushed rock. EC-6 Straw Mulch Minimum Requirement No BMP used by Contractor No use wood mulch May be used on slopes flatter than 4:1 (H:V) in conjunction with a tackifier to stabilize at least three (3) days prior to rain. Crimp into soil with a trackwalker. EC-7 Geotextiles and Mats Minimum Requirement No BMP used by Contractor No cost prohibitive and short slope lengths, EC-8 Wood Mulching Minimum Requirement Yes BMP used by Contractor Yes May be used on slopes and landscaped medians flatter than 4:1 (H:V) to stabilize at least three (3) days prior to rain. Sufficient quantities of wood mulch shall be maintained on -site throughout the duration of the project, allowing for implementation in the event of predicted rain and for rapid response due to failures or emergencies, in conformance with other General Permit requirements and as described in this SWPPP. EC-9 Earth Dike and Drainage Swales Minimum Requirement No BMP used by Contractor No contractor should use diversion pipes to bypass off -site flows. EC-10 Velocity Dissipation Devices Minimum Requirement BMP used by Contractor EC-11 Slope Drains Minimum Requirement BMP used by Contractor EC-12 Streambank Stabilization Minimum Requirement No No at topography limits velocities. No No flat topography. ►% BMP used by Contractor No not applicable. El Segundo Boulevard Improvements Project 23 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 EC-13 Minimum Requirement BMP used by Contractor n/a, ent not used by CASQA BMP Fact Sheets EC-14 Compost Blankets Minimum Requirement No BMP used by Contractor No cost rohibitive use other minimum erosion control BMP, EC-15 Soil Preparation -Roughening Minimum Requirement Yes BMP used by Contractor Yes Soil preparation (i.e. tilling, raking, and amendment) should be used in combination with any soil stabilization method. Soil roughening should be used along any disturbed slopes, including temporary stockpiles, sediment basins, or compacted soil diversion berms and swales. Roughening should be used in combination with hydraulically applied stabilization methods, but should not be used in combination with sod because rougheing is intended to leave terraces on the slope. EC-16 Non -Vegetated Stabilization Minimum Requirement No BMP used by Contractor TBA Non -vegetated stabilization includes wood mulching. WE-1 Wind Erosion Control Minimum Requirement Yes BMP used by Contractor Yes Wind Erosion Control BMPs shall be used for construction vehicle traffic on unpaved areas, drilling activities, soils and debris storage piles, batch drop from front-end loaders, areas with unstabilized soil, and final grading/site stabilization. 3.2.2 Sediment Controls Sediment controls are temporary or permanent structural measures that are intended to complement the selected erosion control measures and reduce sediment discharges from active construction areas. Sediment controls are designed to intercept and settle out soil particles that have been detached and transported by the force of water. The following sediment control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary sediment control BMPs are provided in Appendix L. These temporary sediment control BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix L. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets. El Segundo Boulevard Improvements Project 24 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Sufficient quantities of temporary sediment control materials shall be maintained on -site throughout the duration of the project, allowing for implementation in the event of predicted rain and for rapid response due to failures or emergencies, in conformance with other General Permit requirements and as described in this SWPPP. If the `BMP used by Contractor' field is marked `No', Contractor shall state reason and alternate BMP as applicable. SE-1 Silt Fence Minimum Requirement BMP used by Contractor SE-2 Sediment Basin Minimum Requirement BMP used by Contractor SE-3 Sediment Trap Minimum Requirement BMP used by Contractor No No use fiber roll instead No No, not applicable, limited ri ht-of-wa Yes Yes Sediment trap is required as part of TC-1 Stabilized Construction Entrance Exit as shown in Caltrans Standard Plan T58. SE-4 Check Dams Minimum Requirement No BMP used by Contractor Yes Gravel bag berm or flexible sediment barrier check dams should be used along paved areas/curb and gutter. SE-5 Fiber Rolls Minimum Requirement Yes BMP used by Contractor Yes Fiber rolls should be placed along the face, above the toe, below the top, and at suitable grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. They should also be located along the perimeter of a project where run-on is anticipated, placed as check dams in unlined ditches with mild grades (less than 1 %). They should be located downslope of exposed soil areas, as an inlet protection measure, and around temporary stockpiles. Note: fiber rolls are not effective unless trenched in and staked. Do not place fiber rolls on hardscape surfaces. Futher installation guidance should be observed in Caltrans Standard Plan T56. Sufficient quantities of fiber rolls and associated installation materials shall be maintained on -site throughout the duration of the project, allowing for implementation in the event of predicted rain and for rapid response due to failures or emergencies, in conformance with other General Permit requirements and as described in this SWPPP. SE-6 Gravel Bag Berm Minimum Requirement Yes El Segundo Boulevard Improvements Project 25 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 BMP used by Contractor Yes Gravel bag berms may be used as sediment traps at culvert/pipe outlets, below other small cleared areas, along the perimeter of the site, around temproary stockpiles and spoil areas, parallel to a roadway to keep sediment off paved areas, as chevrons (small check dams) across mildly sloped construction roads. Where used as chevron check dams, place at 50-feet on -center. SE-7 Street Sweeping Minimum Requirement Yes BMP used by Contractor Yes Sweeping and vacuuming shall be doen anywhere sediment is tracked from the project site onto public or private paved streets and roads, typically at points of egress. Sweeping and vacuuming are also applicable during preparation of paved surfaces for final paving. Clean streets in such a manner as to prevent non-stormwater discharges from reaching surface water or MS4 drainage systems. SE-8 Sandbag Barrier Minimum Requirement No BMP used by Contractor TBA Sandbag barriers should be used in a similar fashion to gravel bag berm, but where a nonporous application is required. The contractor and QSP should determine whether a gravel bag berm would be better a better BMP prior to selecting sandbags. SE-9 Straw Bale Barrier Minimum Requirement No BMP used by Contractor No use fiber roll. SE-10 Storm Drain Inlet Protection Minimum Requirement Yes BMP used by Contractor Yes Every storm drain inlet receiving runoff from unstabilized or otherwise active work areas should be protected from non-stormwater runoff. Storm drain inlet protections should not reduce inlet hydraulic capacity during rain events. Consideration should be given to possible bypass. Protect inlets per Caltrans Standard Plans T62 and T64. Use of bags (i.e. sandbags, gravel bags, etc) should be limited on roadways where bicycle traffic is expected. Alternative inlet protection methods should be used instead. SE-11Active Treatment System (ATS) Minimum Requirement No BMP used by Contractor No only applicable to Risk Level 3 projects as required by the Regional Water Board. SE-12 Manufactured Linear Sediment Controls Minimum Requirement No BMP used by Contractor No use fiber roll El Segundo Boulevard Improvements Project 26 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 May be used as an alternative to other linear sediment controls. Natural (i.e. non -synthetic) materials should be prioritized before manufactured solutions are utilized. SE-13 Compost Sock and Berm Minimum Requirement No BMP used by Contractor I BD Suitable alternative to fiber rolls and earthen berms, The QSD directs the Contractor's attention that compost socks do not require trenching (unlike fiber rolls). In addition, disposal is not required; rather, the Contractor may opt to cut the sock open. The placement of compost socks should be limited to graded (i.e. non-hardscape) areas. SE-14 Biofilter Bags Minimum Requirement No BMP used by Contractor No use gravel bags TC-1 Stabilized Construction Entrance and Exit Minimum Requirement Yes BMP used by Contractor Yes Stabilized construction entrance/exits shall be used where dirt or mud can be tracked onto public roads, adjacent to water bodies, and where dust is a problem. Sediment trapping sumps should be located downstream and adjacent to the exit. Corrugated steel panels shall not be located on native earth. Entrances and exits shall be kept to a minimum by the contractor, and at designated points only. TC-2 Stabilized Construction Roadway Minimum Requirement BMP used by Contractor TC-3 Entrance Outlet Tire Wash Minimum Requirement BMP used by Contractor MANAGEMENT are, No, not applicable No No small promect, not needed. 3.3.1 Non-Stormwater Controls Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit, are prohibited. Non-stormwater discharges for which a separate NPDES permit is required by the local Regional Water Board are prohibited unless coverage under the separate NPDES permit has been obtained for the discharge. The selection of non-stormwater BMPs is based on the list of construction activities with a potential for non-stormwater discharges identified in Section 2.7 of this SWPPP. mEl Segundo Boulevard Immmrovements Project 27_.....__._CASQ p j A SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 The following non-stormwater control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary non-stormwater control BMPs are provided in Appendix L. Non-stormwater BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix L. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets. NS-1 Water Conservation Practices Minimum Requirement Yes BMP used by Contractor Yes Water conservation practices are activities that use water during the construction of a project in a manner that avoid causing erosion and the transport of pollutants offsite. These practices can reduce or eliminate non-stormwater discharges. Water equipment should be kept in good work condition. The QSP should consider visually inspecting water equipment in conjunction with the quarterly non-stormwater visual inspection. Water leaks should be promptly repaired. NS-2 Dewatering Operation Minimum Requirement No BMP used by Contractor No not a licable NS-3 Paving and Grinding Operation Minimum Requirement Yes BMP used by Contractor Yes Paving and grinding is located extensively throughout the project. Drainage inlets and manholes shall be protected during application of microsurfacing and/or tack coat. Slurry shall be removed with a vacuum immediately after it is produced and shall be prevented from running off the pavement or into lanes open to traffic. The residue from grinding activities shall be collected with a vacuum attachment on the grinding machine and shall be prevented from flowing across the pavement. See also WM-8, "Concrete Waste Management," and WM-10, "Liquid Waste Management." Do not coat asphalt trucks and equipment with substances that contain soap, foaming agents, or toxic chemicals. NS-4 Temporary Stream Crossing Minimum Requirement No BMP used by Contractor No, not applicable NS-5 Clear Water Diversion Minimum Requirement No BMP used by Contractor No not applicable El Segundo Boulevard Improvements Project 28 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 NS-6 Illicit Connection/Discharge Minimum Requirement Yes BMP used by Contractor Yes Applies to all construction projects. Reporting shall be done for ANY illicit discharge or connection, or illegal dumping. To report illegal dumping/discharges, anywhere in Los Angeles County, into the storm drain system, call 1(888)CLEAN LA, 24 hours per day. NS-7 Potable Water/Irrigation Minimum Requirement Yes BMP used by Contractor Yes Existing irrigation is located and proposed irrigation is scoped within the project. Fire hydrants (i.e. potable water) are also scoped for relocation and will require testing and disinfection. NS-8 Vehicle and Equipment Cleaning Minimum Requirement Yes BMP used by Contractor Yes Vehicles and equipment shall be cleaned off -site where practicable. NS-9 Vehicle and Equipment Fueling Minimum Requirement Yes BMP used by Contractor Yes Vehicles and equipment shall be fueled off -site where practicable. NS-10 Vehicle and Equipment Maintenance Minimum Requirement Yes BMP used by Contractor Yes Vehicles and equipment shall be maintained off -site where practicable. NS-11 Pile Driving Operation Minimum Requirement Yes BMP used by Contractor Yes This BMP also covers cast -in -drilled -hole piles, as will be constructed for traffic signal foundations. NS-12 Concrete Curing Minimum Requirement Yes BMP used by Contractor Yes Will be required for throughout the project: sidewalks, curb and gutter, drainage structures, etc. NS-13 Concrete Finishing Minimum Requirement Yes BMP used by Contractor Yes El Segundo Boulevard Improvements Project 29 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Will be required for throughout the project: sidewalks, curb and gutter, drainage structures, etc. NS-14 Material and Equipment Use Over Water Minimum Requirement No BMP used by Contractor No not applicable NS-15 Demolition Removal Adjacent to Water Minimum Requirement BMP used by Contractor NS-16 Temporary Batch Plants Minimum Requirement BMP used by Contractor No No not applicable No No not applicable .-JIL471114 11 Materials management control practices consist of implementing procedural and structural BMPs for handling, storing and using construction materials to prevent the release of those materials into stormwater discharges. The amount and type of construction materials to be utilized at the Site will depend upon the type of construction and the length of the construction period. The materials may be used continuously, such as fuel for vehicles and equipment, or the materials may be used for a discrete period, such as soil binders for temporary stabilization. Waste management consist of implementing procedural and structural BMPs for handling, storing, and ensuring proper disposal of wastes to prevent the release of those wastes into stormwater discharges. [If applicable to the project site, waste management should be conducted in accordance with the Project's Construction Waste Management Plan.] Materials and waste management pollution control BMPs shall be implemented to minimize stormwater contact with construction materials, wastes and service areas; and to prevent materials and wastes from being discharged off -site. The primary mechanisms for stormwater contact that shall be addressed include: • Direct contact with precipitation • Contact with stormwater run-on and runoff • Wind dispersion of loose materials • Direct discharge to the storm drain system through spills or dumping • Extended contact with some materials and wastes, such as asphalt cold mix and treated wood products, which can leach pollutants into stormwater. A list of construction activities is provided in Section 2.6. The following Materials and Waste Management BMP selection table indicates the BMPs that shall be implemented to handle materials and control construction site wastes associated with these construction activities. Fact Sheets for Materials and Waste Management BMPs are provided in Appendix L. Material management BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix L. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets. El Segundo Boulevard Improvements Project 30 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 WM-1 Material Delivery and Storage Minimum Requirement Yes BMP used by Contractor Yes Construction materials shall be covered at least 12 hours prior to precipitation. WM-2 Material Use Minimum Requirement Yes BMP used by Contractor Yes WM-3 Stockpile Management Minimum Requirement Yes BMP used by Contractor Yes Loose stockpiles (i.e. sols, spoils, aggregate, fly ash, stucco, hydrated lime) shall be covered and bermed whenever not in use, including but not limited to end -of -day. Do not locate stockpiles under tree drip lines. Stockpiles should be located away from flowlines, unless approved by the QSP during dry weather periods, and shall be relocated at least 48 hours prior to a likely precipitation event. Maximum stockpile height when located within flowlines is 2 feet. Non-stormwater flows shall be bypassed and managed appropriately where stockpiles are located within these flowlines. Construction materials shall be covered at least 12 hours prior to precipitation. WM-4 Spill Prevention and Control Minimum Requirement Yes BMP used by Contractor Yes See Contract General Provisions and Standard Specifications for Public Works Construction Section 3- 12.5.3, "Spill Prevention and Emergency Response Plan". Store chemicals in watertight containers (with appropriate secondary containment to prevent spillage or leakage) or in a storage shed (completely enclosed). Clean leaks immediately and properly dispose of leaked materials. WM-5 Solid Waste Management Minimum Requirement Yes BMP used by Contractor Yes Cover waste disposal containers when not in use. Cover at the end of every business day and during a rain event. Prevent discharges from waste disposal containers to the stormwater drainage system or receiving water. WM-6 Hazardous Waste Management Minimum Requirement Yes BMP used by Contractor Yes WM-7 Contaminated Soil Management Minimum Requirement No El Segundo Boulevard Improvements Project 31 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 BMP used by Contractor No WM-8 Concrete Waste Management Minimum Requirement Yes BMP used by Contractor Yes Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. Steel -bin type concrete washout areas (or equal) shall be used. Earthen-bermed and plastic sheeting on ground -type concrete washout areas shall NOT be used. WM-9 Sanitary -Septic Waste Management Minimum Requirement Yes BMP used by Contractor Yes Ensure the containment of sanitation facilities (e.g. portable toilets). Locate portable toilets on the upstream side of the contractor yard. Do not locate within 10 feet of concentrated flowlines or within 20 feet of a storm drain inlet. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. Do not wash down sanitation facility exteriors. WM-10 Liquid Waste Management Minimum Requirement Yes BMP used by Contractor Yes Prevent disposal of rinse or wash waters or materials onto impervious or pervious site surfaces or into the storm drain system or surface waters. 3.4 POST CONSTRUCTION STORMWATER MANAGEMENT MEASURES Post construction BMPs are permanent measures installed during construction, designed to reduce or eliminate pollutant discharges from the site after construction is completed. This site is located in an area subject to a Phase I or Phase II Municipal Separate Storm Sewer System (MS4) permit approved Stormwater Management Plan. ® Yes ❑ No Post -construction runoff reduction requirements have been satisfied through the Los Angeles County Phase I MS4 program; this project is exempt from provision XIII A of the General Permit. The following post -construction source control BMPs are to be installed/constructed: • Site Design and Landscape Planning • Efficient Irrigation • Storm Drain Stenciling This project is a roadway project that uses EPA Green Streets recommendations to the maximum extent possible. Post -construction BMPs will be maintained by the City's Public Works and Parks and Recreation Maintenance Departments. _. El Segundo Date yard Improvements ,26 em nts Project 32 ...._........., .... CASQA SWP January 2015 Agreement No. 6574 Section' inspection The General Permit requires routine weekly inspections of BMPs, along with inspections before, during, and after quallfying raln events. A BMP inspection checklisl. mu5l be filled uut fui iiispecLions and maintained on -site with the SWPPP. The inspection checklist includes the necessary information covered in Section 7.6. A blank inspection checklist can be found in Appendix H. Completed checklists shall be kept in CSMP Attachment 2 "Monitoring Records". BMPs shall be maintained regularly to ensure proper and effective functionality. If necessary, corrective actions shall be implemented within 72 hours of identified deficiencies and associated amendments to the SWPPP shall be prepared by the QSD. Specific details for maintenance, inspection, and repair of Construction Site BMPs can be found in the BMP Factsheets in Appendix L. Rain Event Action Plans (REAPs) are not required for Risk Level 1 projects. El Segundo Boulevard Improvements Project 33 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Section 5 Trainin Appendix J identifies the QSPs for the project. To promote stormwater management awareness and Clean Water Act compliance specific for this project, periodic training of job -site personnel shall be included as part of routine project meetings (e.g. daily/weekly tailgate safety meetings), or task specific trainings as needed. At a minimum, the contractor shall provide formal role -specific training shall be provided at the beginning of the project, and to all new trades at least two days before entering the construction site. In addition, the contractor shall provide formal training to all job -site personnel on an annual basis, and within two weeks following any NAL exceedances. Informal training of job -site personnel shall be included as a part of routine project meetings (e.g. daily/weekly tailgate safety meetings), at minimum on a once -every -two -weeks basis. The QSP shall be responsible for providing this information at the meetings, and subsequently completing the training logs shown in Appendix I, which identifies the site -specific stormwater topics covered as well as the names of site personnel who attended the meeting. Tasks may be delegated to trained employees by the QSP provided adequate supervision and oversight is provided. Training shall correspond to the specific task delegated including: SWPPP implementation; BMP inspection and maintenance; and record keeping. Documentation of training activities (formal and informal) is retained in Appendix I. El Segundo Boulevard Improvements Project 34 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Section 6 Responsible Parties and Operators Approved Signatories who are responsible for SWPPP implementation and have authority to sign permit -related documents are listed below. Written authorizations from the LRP for these individuals are provided in Appendix J. The Approved Signatories assigned to this project are: ........�................................��...�......._...... ... � ............................. .................... ..... .... NameTitlePhone ............�.. Number QSPs identified for the project are identified in Appendix J. The QSP shall have primary responsibility and significant authority for the implementation, maintenance and inspection/monitoring of SWPPP requirements. The QSP will be available at all times throughout the duration of the project. The QSP must have the ability to be on -site within two hours of receiving an emergency call. Duties of the QSP include but are not limited to: • Implementing all elements of the General Permit and SWPPP, including but not limited to: o Ensuring all BMPs are implemented, inspected, and properly maintained; o Performing non-stormwater and stormwater visual observations and inspections; o Performing non-stormwater and storm sampling and analysis, as required; o Performing routine inspections and observations; o Implementing non-stormwater management, and materials and waste management activities such as: monitoring discharges; general Site clean-up; vehicle and equipment cleaning, fueling and maintenance; spill control; ensuring that no materials other than stormwater are discharged in quantities which will have an adverse effect on receiving waters or storm drain systems; etc.; • The QSP may delegate these inspections and activities to an appropriately trained employee, but shall ensure adequacy and adequate deployment. • Ensuring elimination of unauthorized discharges. • The QSPs shall be assigned authority by the LRP to mobilize crews in order to make immediate repairs to the control measures. • Coordinate with the Contractor(s) to assure all of the necessary corrections/repairs are made immediately and that the project complies with the SWPPP, the General Permit and approved plans at all times. • Notifying the LRP or Authorized Signatory immediately of off -site discharges or other non- compliance events. See Appendix K. El Segundo Boulevard Improvements Project 35 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Section•n Site Monitoring Program FAINFUNTOORT5 This Construction Site Monitoring Program (CSMP) was developed to address the following objectives: 1. To demonstrate that the site is in compliance with the Discharge Prohibitions of the Construction General Permit; 2. To determine whether non -visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives; 3. To determine whether immediate corrective actions, additional Best Management Practices (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in stormwater discharges and authorized non-stormwater discharges; 4. To determine whether BMPs included in the SWPPP are effective in preventing or reducing pollutants in stormwater discharges and authorized non-stormwater discharges. This project has been determined to be a Risk Level 1 project. The General Permit identifies the following types of monitoring as being applicable for a Risk Level 1 project. • Visual inspections of Best Management Practices (BMPs); • Visual monitoring of the site related to qualifying storm events; • Visual monitoring of the site for non-stormwater discharges; • Sampling and analysis of construction site runoff for non -visible pollutants when applicable; and • Sampling and analysis of construction site runoff as required by the Regional Water Board when applicable. Visual monitoring and inspections requirements of the General Permit are triggered by a qualifying rain event. The General Permit defines a qualifying rain event as any event that produces 0.5 inch of precipitation. A minimum of 48 hours of dry weather will be used to distinguish between separate qualifying storm events. The QSP should daily consult the National Oceanographic and Atmospheric Administration (NOAA) for the weather forecasts. Weather reports should be printed and maintained with the SWPPP in CSMP Attachment 1 "Weather Reports". The following link is used to obtain forecasts: https://www.weather.gov/w,rh/WxTable?,LAT=33.9425&LNG=-1 18.409&DAYS=7&INT=6 7.3.2 Rain Gauges The QSP shall install one (1) rain gauge on the project site. Locate the gauge in an open area away from obstructions such as trees or overhangs. Mount the gauge on a post at a height of 3 to 5 feet with the gauge extending several inches beyond the post. Make sure that the top of the gauge is level. Make sure the post is not in an area where rainwater can indirectly splash from sheds, equipment, trailers, etc. El Segundo Boulevard Improvements Project 36 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 The QSP shall relocate the rain gauge to reflect current contractor construction phasing. The rain gauge shall be read daily during normal site scheduled hours. The rain gauge should be read at approximately the same time every day and the date and time of each reading recorded. Log rain gauge readings in CSMP Attachment 1 "Weather Records" via electronic spreadsheet input. Follow the rain gauge instructions to obtain accurate measurements. Once the rain gauge reading has been recorded, accumulated rain shall be emptied, and the gauge reset. Alternatively, include instructions for an automated recording rain gauge if used. For comparison with the site rain gauge, the nearest appropriate governmental rain gauge(s) is located at El Segundo Boulevard and Nash Street, htt s://d w.lacount . ov/wrd/rainfall/ Monitoring locations and descriptions are shown on the Site Maps in Appendix B. Whenever changes in the construction site might affect the appropriateness of sampling locations, the sampling locations shall be revised accordingly. All such revisions shall be implemented as soon as feasible and the SWPPP amended. Temporary changes that result in a one-time additional sampling location do not require a SWPPP amendment. Safety practices for sample collection will be in accordance with the [ENTER TITLE AND PUBLICATION DATE OF CONTRACTOR'S HEALTH AND SAFETY PLAN FOR THE PROJECT OR PROVIDE SPECIFIC REQUIREMENTS IN THIS SECTION]. A summary of the safety requirements that apply to sampling personnel is provided below. • [LIST] • [LIST] This project is not required to collect samples or conduct visual observations (inspections) under the following conditions: • During dangerous weather conditions such as flooding and electrical storms. • Outside of scheduled site business hours. Scheduled site business hours are: Monday -Friday 7:00am-4:00pm If monitoring (visual monitoring or sample collection) of the site is unsafe because of the dangerous conditions noted above then the QSP shall document the conditions for why an exception to performing the monitoring was necessary. The exemption documentation shall be filed in CSMP Attachment 2 "Monitoring Records". Visual monitoring includes observations and inspections. Inspections of BMPs are required to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Visual observations of the site are required to observe storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. The following table identifies the required frequency of visual observations and inspections. Inspections and observations will be conducted at the locations identified in Section 7.6.3. El Segundo Boulevard Improvements Project 37 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 7.1 Summary of Visual Monitoring and Inspections Type of Inspection Routine Inspections BMP Inspections BMP Inspections — Tracking Control Non-Stormwater Discharge ................. Observations Rain Event Triggered Inspections Site Inspections Prior to a Qualifying t i ying Event BMP Inspections During an Extended Storm Event Site Inspections Following a Qualifying Event Frequency Weekly' Daily Quarterly during daylight hours Within 48 hours of a qualifying event 2 Every 24-hour period of a rain event' Within 48 hours of a qualifying event2 ' Most BMPs must be inspected weekly; those identified below must be inspected more frequently. 2 Inspections are required during scheduled site operating hours. 3 Inspections are required during scheduled site operating hours regardless of the amount of precipitation on any given day. 7.6.1 Routine Observations and Inspections Routine site inspections and visual monitoring are necessary to ensure that the project is in compliance with the requirements of the Construction General Permit. 7.6.1.1 Routine BMP Inspections Inspections of BMPs are conducted to identify and record: • BMPs that are properly installed; • BMPs that need maintenance to operate effectively; • BMPs that have failed; or • BMPs that could fail to operate as intended. 7.6.1.2 Non-Stormwater Discharge Observations Each drainage area will be inspected for the presence of or indications of prior unauthorized and authorized non-stormwater discharges. Inspections will record: • Presence or evidence of any non-stormwater discharge (authorized or unauthorized); • Pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.); and • Source of discharge. 7.6.2 Rain -Event Triggered Observations and Inspections Visual observations of the site and inspections of BMPs are required prior to a qualifying rain event; following a qualifying rain event, and every 24-hour period during a qualifying rain event. Pre -rain El Segundo Boulevard Improvements Projectmmm WWW..3.8..... -CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 inspections will be conducted after consulting NOAA and determining that a precipitation event with a 50% or greater probability of precipitation has been predicted. 7.6.2.1 Visual Observations Prior to a Forecasted Qualifying Rain Event Within 48-hours prior to a qualifying event a stormwater visual monitoring site inspection will include observations of the tollowing locations: • Stormwater drainage areas to identify any spills, leaks, or uncontrolled pollutant sources; • BMPs to identify if they have been properly implemented; • Any stormwater storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. Consistent with guidance from the State Water Resources Control Board, pre -rain BMP inspections and visual monitoring will be triggered by a NOAA forecast that indicates a probability of precipitation of 50% or more in the project area. 7.6.2.2 BMP Inspections During an Extended Storm Event During an extended rain event BMP inspections will be conducted to identify and record: BMPs that are properly installed; • BMPs that need maintenance to operate effectively; • BMPs that have failed; or • BMPs that could fail to operate as intended. If the construction site is not accessible during the rain event, the visual inspections shall be performed at all relevant outfalls, discharge points, downstream locations. The inspections should record any projected maintenance activities. 7.6.2.3 Visual Observations Following a Qualifying Rain Event Within 48 hours following a qualifying rain event (0.5 inches of rain) a stormwater visual monitoring site inspection is required to observe: • Stormwater drainage areas to identify any spills, leaks, or uncontrolled pollutant sources; • BMPs to identify if they have been properly designed, implemented, and effective; • Need for additional BMPs; • Any stormwater storage and containment areas to detect leaks and ensure maintenance of adequate freeboard; and • Discharge of stored or contained rain water. 7.6.3 Visual Monitoring Procedures Visual monitoring shall be conducted by the QSP or staff trained by and under the supervision of the QSP. The name(s) and contact number(s) of the site visual monitoring personnel are listed below and their training qualifications are provided in Appendix I. Assigned inspector: NAME OF INSPECTOR Contact phone: II ON,E NMBR Alternate inspector: NAME OF INSPECTOR Contact phoneEPOi;NUIPR Stormwater observations shall be documented on the Visual Inspection Field Log Sheet (see CSMP Attachment 3 "Example Forms"). BMP inspections shall be documented on the site specific BMP El Segundo Boulevard Improvements Project 39 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 inspection checklist. Any photographs used to document observations will be referenced on stormwater site inspection report and maintained with the Monitoring Records in Attachment 2. The QSP shall within 3 working days of the inspection submit copies of the completed inspection report to the Contractor's superintendent and the City's project manager and construction manager. The completed reports will be kept in CSMP Attachment 2 "Monitoring Records". 7.6.3.1 Visual Monitoring Follow-up and Reporting Correction of deficiencies identified by the observations or inspections, including required repairs or maintenance of BMPs, shall be initiated and completed as soon as possible. If identified deficiencies require design changes, including additional BMPs, the implementation of changes will be initiated within /2 hours of identification and be completed as soon as possible. When design changes to BMPs are required, the SWPPP shall be amended to reflect the changes. Deficiencies identified in site inspection reports and correction of deficiencies will be tracked on the Inspection Field Log Sheet or BMP Inspection Report and shall be submitted to the QSP and shall be kept in CSMP Attachment 2 "Monitoring Records". The QSP shall within 3 working days of the inspection submit copies of the completed Inspection Field Log Sheet or BMP Inspection Report with the corrective actions to the Contractor's superintendent and the City's project manager and construction manager. Results of visual monitoring must be summarized and reported in the Annual Report. 7.6.3.2 Visual Monitoring Locations The inspections and observations identified in Sections 7.6.1 and 7.6.2will be conducted at the locations identified in this section. The following information is shown on the Site Maps in Appendix B: • BMP Locations • Site Drainage Areas • Stormwater Storage and Containment Areas • Site Discharge Locations o MS4 Discharge Locations 7.7.1 SampliAnalysis Ian for Non -Visible ll in Stormwater Runoff Discharges This Sampling and Analysis Plan for Non -Visible Pollutants describes the sampling and analysis strategy and schedule for monitoring non -visible pollutants in stormwater runoff discharges from the project site. Sampling for non -visible pollutants will be conducted when (1) a breach, leakage, malfunction, or spill is observed; and (2) the leak or spill has not been cleaned up prior to the rain event; and (3) there is the potential for discharge of non -visible pollutants to surface waters or drainage system. El Segundo Boulevard Improvements Project 40 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 The following construction materials, wastes, or activities, as identified in Section 2.6, are potential sources of non -visible pollutants to stormwater discharges from the project. Storage, use, and operational locations are shown on the Site Maps in Appendix B. • Concrete activities • Asphalt paving activities • Cleaning/washing activities • Landscaping • Liquid and solid wastes • Sanitary and septic wastes • Timber: Formwork, shoring, and lagging • Vehicle and equipment use • Painting • Utility line testing and flushing There are no known existing site features contaminated with non -visible pollutants. The following soil amendments have the potential to change the chemical properties, engineering properties, or erosion resistance of the soil and will be used on the project site. Locations of soil amendment application are shown on the Site Maps in Appendix B. • Landscaping activities • Cement Stabilized Pulverized Base activities 7.7.1.1 Sampling Schedule Samples for the potential non -visible pollutant(s) and a sufficiently large unaffected background sample shall be collected during the first two hours of discharge from rain events that result in a sufficient discharge for sample collection. Samples shall be collected during the site's scheduled hours and shall be collected regardless of the time of year and phase of the construction. Collection of discharge samples for non -visible pollutant monitoring will be triggered when any of the following conditions are observed during site inspections conducted prior to or during a rain event. Materials or wastes containing potential non -visible pollutants are not stored under watertight conditions. Watertight conditions are defined as (1) storage in a watertight container, (2) storage under a watertight roof or within a building, or (3) protected by temporary cover and containment that prevents stormwater contact and runoff from the storage area. Materials or wastes containing potential non -visible pollutants are stored under watertight conditions, but (1) a breach, malfunction, leakage, or spill is observed, (2) the leak or spill is not cleaned up prior to the rain event, and (3) there is the potential for discharge of non -visible pollutants to surface waters or a storm drain system. A construction activity, including but not limited to those in Section 2.6, with the potential to contribute non -visible pollutants (1) was occurring during or within 24 hours prior to the rain event, (2) BMPs were observed to be breached, malfunctioning, or improperly implemented, and (3) there is the potential for discharge of non -visible pollutants to surface waters or a storm drain system. El Segundo Boulevard Improvements Project 41 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Soil amendments that have the potential to change the chemical properties, engineering properties, or erosion resistance of the soil have been applied, and there is the potential for discharge of non -visible pollutants to surface waters or a storm drain system. Stormwater runoff from an area contaminated by historical usage of the site has been observed to combine with stormwater runoff from the site, and there is the potential for discharge of non -visible pollutants to surface waters or a storm drain system. 7.7.1.2 Sampling Locations Sampling locations are based on proximity to planned non -visible pollutant storage, occurrence or use, accessibility for sampling, and personnel safety. Planned non -visible pollutant sampling locations for the project site and the contractor's yard are shown on the Site Maps in Appendix B . The contractor / QSP shall determine sampling location(s) has been identified for the collection of an uncontaminated sample of runoff as a background sample for comparison with the samples being analyzed for non -visible pollutants. This location(s) was selected such that the sample will not have come in contact with the operations, activities, or with disturbed soils areas. If a stormwater visual monitoring site inspection conducted prior to or during a storm event identifies the presence of a material storage, waste storage, or operations area with spills or the potential for the discharge of non -visible pollutants to surface waters or a storm drain system that is at a location not listed above and has not been identified on the Site Maps, sampling locations will be selected by the QSP using the same rationale as that used to identify planned locations. Non -visible pollutant sampling locations shall be identified by the QSP on the pre -rain event inspection form and Rail Event Action Plan prior to a forecasted qualifying rain event. 7.7.1.3 Monitoring Preparation Non -visible pollutant samples will be collected by: Contractor ❑ Yes ❑ No Consultant ❑ Yes ❑ No Laboratory ❑ Yes ❑ No Samples on the project site will be collected by the following contractor sampling personnel: Name/Telephone Number: Alternate(s)/Telephone Number: An adequate stock of monitoring supplies and equipment for monitoring non -visible pollutants will be available on the project site prior to a sampling event. Monitoring supplies and equipment will be stored in a cool temperature environment that will not come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in accordance with the sampling schedule. Supplies maintained at the project site will include, but are not limited to, clean powder -free nitrile gloves, sample collection equipment, coolers, appropriate number and volume of sample bottles, identification labels, re -sealable storage bags, paper towels, personal rain gear, ice, and Effluent Sampling Field Log Sheets and Chain of Custody (CoC) forms, which are provided in CSMP Attachment 3 "Example Forms". Samples on the project site will be collected by the following [specify laboratory or environmental consultant]: El Segundo Boulevard Improvements Project 42 CASQA SWPPP Template p � plate Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Company Name: Street Address: City, State Zip: Telephone Number: Point of Contact: Name of Sampler(s): Name of Alternate(s): The QSP or his/her designee will contact [specify name of laboratory or environmental consultant] 24 hours prior to a predicted rain event or for an unpredicted event, as soon as a rain event begins if one of the triggering conditions is identified during an inspection to ensure that adequate sample collection personnel and supplies for monitoring non -visible pollutants are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. 7.7.1.4 Analytical Constituents Table 7.10 lists the specific sources and types of potential non -visible pollutants on the project site and the water quality indicator constituent(s) for that pollutant. Table 7.10 Potential Non -Visible Pollutants and Water Quality Indicator Constituents .......... _......... ......... .......... ........................................ Pollutant Source __ _........._.... Pollutant Water Quality Indicator Constituent ............................................... Adhesives Adhesives _............................-............. COD, Phenols, SVOCs ........................................................................... Asphalt Asphalt ...... _..........................................................���......... VOCs ........ . Cleaning _............................ __ ..__..._. ..-ae Acids . _ . _ PH Cleaning Bleaches Residual chlorine .............................................................. Cleaning ....................................._ TSP ............_.... Phosphate ...............................�.............._m..... Cleaning Solvents �.................................................._.............. VOCs, SVOCS ....._.-............................................ Cleaning ... Detergents ...... _......... _.... ........................ ._ MBAS Concrete /Masonry Work Sealant (Methyl methacrylate) SVOC Concrete / Masonry Work Curing compounds Concrete / Masonry Work As h, slag, sand H, Al, Ca, Va, ............................................ .. P Zn w._ ...... Framing / Carpentry .................. _........� Treated Wood Cu, Cr, As, Zn Framing Carpentry / Car p y Particle board Formaldehyde ....._ ..............__.._....._...._. Framing / Carpentry w.... Untreated wood _._______________________..._____..................._. BOD Concrete / Masonry Work Gypsum / Lime PH amendments El Segundo Boulevard Improvements Project 43 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 7.10 Potential Non -Visible Pollutants and Water Quality Indicator Constituents Pollutant Source Pollutant Water Quality Indicator Constituent _...,_ ............. �... _._.�.. � . � . - — — - - Constituents specific to know ................ n Concrete / Masonry Work Contaminated Soil contaminants, check with Laboratory - ..........._............_._ Product dependent, see label and Landscaping Pesticides/Herbicides check with Laboratory ...�................. � w..... ......................... w.� . .. TKN, NO3, BOD, COD, DOC, Landscaping Fertilizers Sulfate, NH3, Phosphate, Potassium Landscaping Aluminum sulfate Al, TDS, Sulfate � Constituents s specific to materials, Liquid Waste Liquid Waste check boratory Painting...�.�.............__.. ._.�.. Resins.......�.�.�.�...�.�...��............_.................�6... ,,,�.,�.�.�.�.�.�.�.....��...��...�....�_- COD, SVOCs _ ..._m Painting g ..................N..... Thinners COD, VOCs ...... .�................... Painting� _.... �� � Paint strippers .._______....... � � . ............ VOCs, SVOCs, metals Painting Lacquers, varnishes, COD, VOCs, SVOCs enamels Painting Sealants COD ­ ­..........-. ... Painting ..... m .......... Adhesives _.................... � � ... �........ Phenols, SVOCs .............. Planting / Vegetation _ Vegetation stockpiles ...._� _�����.�...- �...�.�...............� B.� Management ................... - �.......�-� ...............�... Planting / Vegetation ��.�.�.�.�........................._........... .................. TKN, NO3, BOD, COD, DOC, Management Fertilizers sulfate, NH3, Phosphate, Potassium Planting /Vegetation ........... Pesticides/ , see labeldependent, ................. Product de p and Management Herbicides check with Laboratory Sewer line breaks _.........._. and Portable Toilets Sanitary waste (using clear fluid — BOD, Total/Fecal coliform blue fluid is visible if discharged) / Soil Preparation / AmendmentsPolymer/Co-polymers. �.......... .. ..............�............ TKN, NO3, BOD, COD, DOC, Dust Control Sulfate, Ni Soil Preparation / Amendments / _m.............www g sulfatenin TDS, alkali�nit....����......���.......�w Y Dust Control Soil Preparation /Ame Amendments / �....._.............�. _ Psyllium �..�. COD, TOC ��������������-� Dust Control EI Segundo Boulevard Improvements Project 44 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 7.10 Potential Non -Visible Pollutants and Water Quality Indicator Constituents ..........................�. . ................... . Pollutant Source Pollutant _�.�......��____ Pollutant Water Quality Indicator Constituent �w.................� . _........ _..................... w, Soil Preparation / Amendments / Guar/Plarrl Gurns COD, TOC, Ni Dust Control Solid Waste (leakage) Solid Waste BOD (leakage) Utility Line Testing and Flushing Utility Line Testing Residual chlorine, chloramines and Flushing Equipment Use q p ...Vehicle and E ui ..e�.....�.�......�.�.........................�Batteri..-es Sulfuric acid.w_..Pb........... pH..._........................�.�.�.�.�. 7.7.1.5 Sample Collection Samples of discharge shall be collected at the designated non -visible pollutant sampling locations shown on the Site Maps in Appendix B or in the locations determined by observed breaches, malfunctions, leakages, spills, operational areas, soil amendment application areas, and historical site usage areas that triggered the sampling event. Grab samples shall be collected and preserved in accordance with the methods identified in the Table, "Sample Collection, Preservation and Analysis for Monitoring Non -Visible Pollutants" provided in Section 7.7.1.6. Only the QSP, or personnel trained in water quality sampling under the direction of the QSP shall collect samples. Sample collection and handling requirements are described in Section 7.7.7. 7.7.1.6 Sample Analysis Samples shall be analyzed using the analytical methods identified in the Table 7.11. Samples will be analyzed by: Laboratory Name: Street Address: City, State Zip: Telephone Number: Point of Contact: ELAP Certification Number: Samples will be delivered to the laboratory by: Driven by Contractor ❑ Yes ❑ No Picked up by Laboratory Courier ❑ Yes ❑ No Shipped ❑ Yes ❑ No El Segundo Boulevard Improvements Project 45 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 7.11 Sample Collection, Preservation and Analysis for Monitoring Non -Visible Pollutants Constituent Analytical Method Minimum Sample Sample Sample Reporting Maximum Holding Volume Bottle Preservation Limit Time Field test with pH calibrated portable 100 mL 250ml- P None +/- 0.2 pH 15 min instrument; EPA units Method 180.1 Field test with Turbidity calibrated portable instrument; EPA 100 mL 250mL P None 1 NTU 48 hours Method 150.1 VOC EPA 624 40 mL 3 x 40mL Store at 4degC, 0.5-50 14 days VOA -glass Hcl to pH<2 micrograms/L COD EPA 410.4 / SM 100 mL 100 mL P Store at 4degC, 10 28 days 5220 D Hcl to pH<2 milligrams/LL Phenols EPA 420.1 1 L 2 — 1 L Glassamber Store at 4degC 0.1 micrograms/L 7 days Chlorine Do not expose to 0.1 (residual) SM 4500-CL G 250 mL glass light (foil milligrams/L 15 min wrapped) Nitrate EPA 300.0 / SM 4110 B 100 mL 250 mL P Store at 4degC 0.1 milligrams/L 48 hours Methyl Methacrylate EPA 625 1 L 2 — 1 L Store at 4degC 0.05-0.25 7 days (SVOC) Glassamber micrograms/L Metals (copper) EPA 200.8 100 mL 250mL P Store at 4degC, HNO3 to pH<2 0.2-25 micrograms/L 6 months Notes: 7.7.1.7 Data Evaluation and Reporting The QSP shall complete an evaluation of the water quality sample analytical results. Runoff/downgradient results shall be compared with the associated upgradient/unaffected results and any associated run-on results. Should the runoff/downgradient sample show an increased level of the tested analyte relative to the unaffected background sample, which cannot be explained by run-on results, the BMPs, site conditions, and surrounding influences shall be assessed to determine the probable cause for the increase. As determined by the site and data evaluation, appropriate BMPs shall be repaired or modified to mitigate discharges of non -visible pollutant concentrations. Any revisions to the BMPs shall be recorded as an amendment to the SWPPP. The General Permit prohibits the storm water discharges that contain hazardous substances equal to or in excess of reportable quantities established in 40 C.F.R. § 117.3 and § 302.4. The results of any non - El Segundo Boulevard Improvements Project 46 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 stormwater discharge results that indicate the presence of a hazardous substance in excess of established reportable quantities shall be immediately reported to the Regional Water Board and other agencies as required by 40 C.F.R. § 117.3 and § 302.4. Results of non -visible pollutant monitoring shall be reported in the Annual Report. 7.7.2 Sampling and Analysis Plan for pH and Turbidity in Stormwater Runoff Discharges Sampling and analysis of runoff for pH and turbidity is not required for Risk Level 1 projects. 7.7.2.1 Sampling Schedule Stormwater runoff samples shall be collected for turbidity from each day of a qualifying rain event that results in a discharge from the project site. At minimum, turbidity samples will be collected from each site discharge location draining a disturbed area. A minimum of three samples will be collected per day of discharge during a qualifying event. Samples should be representative of the total discharge from the project each day of discharge during the qualifying event. Typically representative samples will be spaced in time throughout the daily discharge event. Stormwater runoff samples shall be collected for pH from each day of qualifying rain events that result in a discharge from the project site. Note that pH samples are only required to be collected during project phases and from drainage areas with a high risk of pH altering discharge. A minimum of three samples will be collected per day of discharge during a qualifying event. Samples should be representative of the total discharge from the location each day of discharge during the qualifying event. Typically representative samples will be spaced in time throughout the daily discharge event. Stored or collected water from a qualifying storm event when discharged shall be tested for turbidity and pH (when applicable). Stored or collected water from a qualifying event may be sampled at the point it is released from the storage or containment area or at the site discharge location. Run-on samples shall be collected whenever the QSP identifies that run-on has the potential to contribute to an exceedance of a NAL. 7.7.2.2 Sampling Locations Sampling locations are based on the site runoff discharge locations and locations where run-on enters the site; accessibility for sampling; and personnel safety. Planned pH and turbidity sampling locations are shown on the Site Maps in Appendix B. 7.7.2.3 Monitoring Preparation Turbidity and pH samples will be collected and analyzed by: Contractor ❑ Yes ❑ No Consultant ❑ Yes ❑ No Laboratory ❑ Yes ❑ No Samples on the project site will be collected by the following contractor sampling personnel: Name/Telephone Number: Alternate(s)/Telephone Number: El Segundo Boulevard Improvements Project 47 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 An adequate stock of monitoring supplies and equipment for monitoring turbidity and will be available on the project site prior to a sampling event. Monitoring supplies and equipment will be stored in a cool temperature environment that will not come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in accordance with the sampling schedule. Supplies maintained at the project site will include, but are not limited to, field meters, extra batteries; clean powder -free nitrile gloves, sample collection equipment, appropriate sample containers, paper towels, personal rain gear, and Effluent Sampling Field Log Sheets and CoC forms provided in CSMP Attachment 3 "Example Forms". The contractor will obtain and maintain the field testing instruments, as identified in Section 7.7.2.6, for analyzing samples in the field by contractor sampling personnel. Samples on the project site will be collected by the following [specify laboratory or environmental consultant]: Company Name: Street Address: City, State, Zip: Telephone Number: Point of Contact: Name of Sampler(s): Name of Alternate(s): The QSP or his/her designee will contact [specify name of laboratory or environmental consultant] 24 hours prior to a predicted rain event or for an unpredicted event, as soon as a rain event begins to ensure that adequate sample collection personnel, supplies for monitoring pH and turbidity are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. 7.7.2.4 Field Parameters Samples shall be analyzed for the constituents indicated in the Table 7.14. Table 7.14 Sample Collection and Analysis for Monitoring Turbidity and pH Parameter Test Method Minimum Sample Sample Collection Detection Limit Volume0) Container Type (minimum) Field meter/probe with Polypropylene or Glass Turbidity calibrated portable 500 mL (Do not collect in meter 1 NTU instrument sample cells) Field meter/probe with pH calibrated portable instrument or calibrated pH 100 mL Polypropylene 0.2 pH units test kit El Segundo Boulevard Improvements Project 48 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table 7.14 Sample Collection and Analysis for Monitoring Turbidity and pH Minimum Detection Parameter Test Method Sample Sample Collection Limit Volume'► Container Type (minimum) Notes: ' Minimum sample volume recommended. Specific volume requirements will vary by instrument; check instrument manufacturer instructions. L — Liter mL — Milliliter NTU — Nephelometric Turbidity Unit 7.7.2.5 Sample Collection Samples of discharge shall be collected at the designated runoff and run-on sampling locations shown on the Site Maps in Appendix B. Run-on samples shall be collected within close proximity of the point of run-on to the project. Only personnel trained in water quality sampling and field measurements working under the direction of the QSP shall collect samples. Sample collection and handling requirements are described in Section 7.7.7. 7.7.2.6 Field Measurements Samples collected for field analysis, collection, analysis and equipment calibration shall be in accordance with the field instrument manufacturer's specifications. Immediately following collection, samples for field analysis shall be tested in accordance with the field instrument manufacturer's instructions and results recorded on the Effluent Sampling Field Log Sheet. The field instrument(s) listed in Table 7.15 will be used to analyze the following constituents: Table 7.15 Field Instruments Field Instrument Constituent (Manufacturer and Model) .............. _ pH Turbidity The manufacturers' instructions are included in CSMP Attachment 4 "Field Meter Instructions". Field sampling staff shall review the instructions prior to each sampling event and follow the instructions in completing measurement of the samples. • The instrument(s) shall be maintained in accordance with manufacturer's instructions. • The instrument(s) shall be calibrated before each sampling and analysis event. • Maintenance and calibration records shall be maintained with the SWPPP. The QSP may authorize alternate equipment provided that the equipment meets the Construction General Permit's requirements and the manufacturers' instructions for calibration and use are added to CSMP Attachment 4 "Field Meter Instructions". El Segundo Boulevard Improvements Project 49 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 7.7.2.7 Data Evaluation and Reporting Immediately upon completing the measurements for the sampling event, provide the Effluent Sampling Field Log Sheets to the QSP for evaluation. 7.7.3 Sampling and Analysis Plan for pH, Turbidity, and SSC in Receiving Water This project is not subject to Receiving Water Monitoring. 7.7.4 Sampling and Analysis Plan for Non-Stormwater Discharges This project is not subject to the non-stormwater sampling and analysis requirements of the General Permit because it is a Risk Level 1 project. The Regional Water Board has not specified monitoring for additional pollutants,. Sampling personnel shall be trained to collect, maintain, and ship samples in accordance with the Surface Water Ambient Monitoring program (SWAMP) 2008 Quality Assurance Program Plan (QAPrP), Training records of designated contractor sampling personnel are provided in Appendix I. The stormwater sampler(s) and alternate(s) have received the following stormwater sampling training: Name Training INSERT LIST OF TRAINING COURSES INSERT LIST OF TRAINING COURSES The stormwater sampler(s) and alternates have the following stormwater sampling experience: Name Experience INSERT LIST OF STORMWATER SAMPLING EXPERIENCE INSERT LIST OF STORMWATER SAMPLING EXPERIENCE 7.7.6.1 Sample Collection Samples shall be collected at the designated sampling locations shown on the Site Maps and listed in the preceding sections. Samples shall be collected, maintained and shipped in accordance with the SWAMP 2008 Quality Assurance Program Plan (QAPrP). Grab samples shall be collected and preserved in accordance with the methods identified in preceding sections. Daily average pH values must be calculated through the logarithmic method. In order to calculate an average, you must: (1) Convert the pH measurements from logarithms to real numbers; (2) Take the average of the real numbers; and (3) Convert the average of the real numbers back to a logarithm. El Segundo Boulevard Improvements Project 50 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 To maintain sample integrity and prevent cross -contamination, sample collection personnel shall follow the protocols below. • Collect samples (for laboratory analysis) only in analytical laboratory -provided sample containers; • Wear clean, powder -free nitrile gloves when collecting samples; • Change gloves whenever something not known to be clean has been touched; • Change gloves between sites; • Decontaminate all equipment (e.g. bucket, tubing) prior to sample collection using a trisodium phosphate water wash, distilled water rinse, and final rinse with distilled water. (Dispose of wash and rinse water appropriately, i.e., do not discharge to storm drain or receiving water). Do not decontaminate laboratory provided sample containers; • Do not smoke during sampling events; • Never sample near a running vehicle; • Do not park vehicles in the immediate sample collection area (even non -running vehicles); • Do not eat or drink during sample collection; and • Do not breathe, sneeze, or cough in the direction of an open sample container. The most important aspect of grab sampling is to collect a sample that represents the entire runoff stream. Typically, samples are collected by dipping the collection container in the runoff flow paths and streams as noted below. i. For small streams and flow paths, simply dip the bottle facing upstream until full. ii. For larger stream that can be safely accessed, collect a sample in the middle of the flow stream by directly dipping the mouth of the bottle. Once again making sure that the opening of the bottle is facing upstream as to avoid any contamination by the sampler. iii. For larger streams that cannot be safely waded, pole -samplers may be needed to safely access the representative flow. iv. Avoid collecting samples from ponded, sluggish or stagnant water. V. Avoid collecting samples directly downstream from a bridge as the samples can be affected by the bridge structure or runoff from the road surface. Note, that depending upon the specific analytical test, some containers may contain preservatives. These containers should never be dipped into the stream, but filled indirectly from the collection container. 7.7.6.2 Sample Handling Turbidity and pH measurements must be conducted immediately. Do not store turbidity or pH samples for later measurement. Samples for laboratory analysis must be handled as follows. Immediately following sample collection: Cap sample containers; Complete sample container labels; • Sealed containers in a re -sealable storage bag; • Place sample containers into an ice -chilled cooler; • Document sample information on the Effluent Sampling Field Log Sheet; and • Complete the CoC. All samples for laboratory analysis must be maintained between 0-6 degrees Celsius during delivery to the laboratory. Samples must be kept on ice, or refrigerated, from sample collection through delivery to El Segundo Boulevard Improvements Project 51 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 the laboratory. Place samples to be shipped inside coolers with ice. Make sure the sample bottles are well packaged to prevent breakage and secure cooler lids with packaging tape. Ship samples that will be laboratory analyzed to the analytical laboratory right away. Hold times are measured from the time the sample is collected to the time the sample is analyzed. The General Permit requires that samples be received by the analytical laboratory within 48 hours of the physical sampling (unless required sooner by the analytical laboratory). Laboratory Name: Address: City, State Zip: Telephone Number: Point of Contact: 7.7.6.3 Sample Documentation Procedures All original data documented on sample bottle identification labels, Effluent Sampling Field Log Sheet, and CoCs shall be recorded using waterproof ink. These shall be considered accountable documents. If an error is made on an accountable document, the individual shall make corrections by lining through the error and entering the correct information. The erroneous information shall not be obliterated. All corrections shall be initialed and dated. Duplicate samples shall be identified consistent with the numbering system for other samples to prevent the laboratory from identifying duplicate samples. Duplicate samples shall be identified in the Effluent Sampling Field Log Sheet. Sample documentation procedures include the following: Sample Bottle Identiflcat�on Labels: Sampling personnel shall attach an identification label to each sample bottle which shall include, at a minimum, the following information: project name contract number and/or project identification number unique sample identification code, which shall follow this format: SSSSS YYMMDDHHmmTT, where o SSSSS = sampling location identifier number (e.g. o1MS1) o YY = last two digits of the year (e.g. 21) o MM = month (01-12) o DD = day (01-31) o HH = hour sample collected (01-23) o Mm = minute sample collected (00-59) o TT = Type of QA/QC identifier (if applicable) o G = grab o FS = field duplicate o As an example, the sample number for a grab sample collected at station o1MS1 at 4:15PM on December 8, 2021 would be oiMSi_2112081615G Constituent to be analyzed Initials of the person who collected the sample El Segundo Boulevard Improvements Project 52 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Field Log Sheets: Sampling personnel shall complete the Effluent Sampling Field Log Sheet and Receiving Water Sampling Field Log Sheet for each sampling event, as appropriate. Chain of Custody. Sampling personnel shall complete the CoC for each sampling event for which samples are collected for laboratory analysis. The sampler will sign the CoC when the sample(s) is turned over to the testing laboratory or courier. 7.8 ACTIVE TREATMENT SYSTEM MONITORING An Active Treatment System (ATS) will be deployed on the site? ❑ Yes ® No This project does not require a project specific Sampling and Analysis Plan for an ATS because deployment of an ATS is not planned. This project is not subject to bioassessment monitoring because it is not a Risk Level 3 project. 7.10 WATERSHED MONITORING This project is not participating in a watershed monitoring option. 7.11 QUALITY An effective Quality Assurance and Quality Control (QA/QC) plan shall be implemented as part of the CSMP to ensure that analytical data can be used with confidence. QA/QC procedures to be initiated include the following: • Field logs; • Clean sampling techniques; • CoCs; • QA/QC Samples; and • Data verification. Each of these procedures is discussed in more detail in the following sections. 7.11.1 Field Logs The purpose of field logs is to record sampling information and field observations during monitoring that may explain any uncharacteristic analytical results. Sampling information to be included in the field log include the date and time of water quality sample collection, sampling personnel, sample container identification numbers, and types of samples that were collected. Field observations should be noted in the field log for any abnormalities at the sampling location (color, odor, BMPs, etc.). Field measurements for pH and turbidity should also be recorded in the field log. A Visual Inspection Field Log, an Effluent Sampling Field Log Sheet, [and a Receiving Water Sampling Field_ Log Sheet] are included in CSMP Attachment 3 "Example Forms". 7.11.2 Clean Sampling Techniques Clean sampling techniques involve the use of certified clean containers for sample collection and clean powder -free nitrile gloves during sample collection and handling. As discussed in Section 7.7.7, ..... ..__._............... EIITSe undoyard Imp .................................. _............._........._.aa g Improvements Project 53 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 adoption of a clean sampling approach will minimize the chance of field contamination and questionable data results. 7.11.3 Chain The sample CoC is an important documentation step that tracks samples from collection through analysis to ensure the validity of the sample. Sample CoC procedures include the following: Proper labeling of samples; Use of CoC forms for all samples; and Prompt sample delivery to the analytical laboratory. Analytical laboratories usually provide CoC forms to be filled out for sample containers. An example CoC is included in CSMP Attachment 3 "Example Forms". QA/QC samples provide an indication of the accuracy and precision of the sample collection; sample handling; field measurements; and analytical laboratory methods. The following types of QA/QC will be conducted for this project: 7.11.4.1 Field Duplicates Field duplicates provide verification of laboratory or field analysis and sample collection. Duplicate samples shall be collected, handled, and analyzed using the same protocols as primary samples. The sample location where field duplicates are collected shall be randomly selected from the discharge locations. Duplicate samples shall be collected immediately after the primary sample has been collected. Duplicate samples must be collected in the same manner and as close in time as possible to the original sample. Duplicate samples shall not influence any evaluations or conclusion. Provide one duplicate minimum per sampling event. 7.11.4.2 Equipment Blanks Equipment blanks provide verification that equipment has not introduced a pollutant into the sample. Equipment blanks are typically collected when: • New equipment is used; • Equipment that has been cleaned after use at a contaminated site; • Equipment that is not dedicated for surface water sampling is used; or • Whenever a new lot of filters is used when sampling metals. 7.11.4.3 Field Blanks Field blanks assess potential sample contamination levels that occur during field sampling activities. De-ioninzed water field blanks are taken to the field, transferred to the appropriate container, and treated the same as the corresponding sample type during the course of a sampling event. 7.11.4.4 Travel Blanks Travel blanks assess the potential for cross -contamination of volatile constituents between sample containers during shipment from the field to the laboratory. De-ioninzed water blanks are taken along for the trip and held unopened in the same cooler with the VOC samples. El Segundo Boulevard Improvements Project ......... 54w _ ......... CASQA SWPPP Tem plate Preparation Date August 26, 2022 January 2015 Agreement No. 6574 7.11.5 Data Verification After results are received from the analytical laboratory, the QSP shall verify the data to ensure that it is complete, accurate, and the appropriate QA/QC requirements were met. Data must be verified as soon as the data reports are received. Data verification shall include: • Check the CoC and laboratory reports. o Make sure all requested analyses were performed and all samples are accounted for in the reports. • Check laboratory reports to make sure hold times were met and that the reporting levels meet or are lower than the reporting levels agreed to in the contract. • Check data for outlier values and follow up with the laboratory. o Occasionally typographical errors, unit reporting errors, or incomplete results are reported and should be easily detected. These errors need to be identified, clarified, and corrected quickly by the laboratory. The QSP should especially note data that is an order of magnitude or more different than similar locations, or is inconsistent with previous data from the same location. • Check laboratory QA/QC results. o EPA establishes QA/QC checks and acceptable criteria for laboratory analyses. These data are typically reported along with the sample results. The QSP shall evaluate the reported QA/QC data to check for contamination (method, field, and equipment blanks), precision (laboratory matrix spike duplicates), and accuracy (matrix spikes and laboratory control samples). When QA/QC checks are outside acceptable ranges, the laboratory must flag the data, and usually provides an explanation of the potential impact to the sample results. » Check the data set for outlier values and, accordingly, confirm results and re -analyze samples where appropriate. o Sample re -analysis should only be undertaken when it appears that some part of the QA/QC resulted in a value out of the accepted range. Sample results may not be discounted unless the analytical laboratory identifies the required QA/QC criteria were not met and confirms this in writing. Field data including inspections and observations must be verified as soon as the field logs are received, typically at the end of the sampling event. Field data verification shall include: Check field logs to make sure all required measurements were completed and appropriately documented; • Check reported values that appear out of the typical range or inconsistent; Follow-up immediately to identify potential reporting or equipment problems, if appropriate, recalibrate equipment after sampling; Verify equipment calibrations; • Review observations noted on the field logs; and Review notations of any errors and actions taken to correct the equipment or recording errors. El Segundo Boulevard Improvements Project m...�.. ....................5�___�................... ........ CASQA SWPPP Temp late plate Preparation Date August 26, 2022 January 2015 Agreement No. 6574 7.12 RECORDS RETENTION All records of stormwater monitoring information and copies of reports (including Annual Reports) must be retained for a period of at least three years from date of submittal or longer if required by the Regional Water Board. Results of visual monitoring, field measurements, and laboratory analyses must be kept in the SWPPP along with CoCs, and other documentation related to the monitoring. Records are to be kept onsite while construction is ongoing. Records to be retained include: • The date, place, and time of inspections, sampling, visual observations, and/or measurements, including precipitation; • The individual(s) who performed the inspections, sampling, visual observation, and/or field measurements; • The date and approximate time of field measurements and laboratory analyses; • The individual(s) who performed the laboratory analyses; • A summary of all analytical results, the method detection limits and reporting limits, and the analytical techniques or methods used; • Rain gauge readings from site inspections; • QA/QC records and results; a Calibration records; • Visual observation and sample collection exemption records; • The records of any corrective actions and follow-up activities that resulted from analytical results, visual observations, or inspections; [and] o [NAL Exceedance Reports]. El Segundo Boulevard Improvements Project 56 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Access via https://www.weather.gov/wrh/wxtabl Coordinates: 33.9425 -118.409 Or use permanent link: hftr)s://www.weather.gov/wrh/WxTable?LAT=33,9425&LNG=-1 18.409QAYS=7+ INTQ El Segundo Boulevard Improvements Project 57 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 58 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 59 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 ... ��_.. �. ......................... _. _.......... __ . Risk Level 1, Z 3: Visual Inspection Feld Log Sheet El Segundo Boulevard Improvements Project WDID # TBD Date and Time of Inspection: Report Date: Inspection Type:...... - ..... ❑ ............ Before predicted rain El Following qualifying rain event ❑ Weekly ❑ During rain event ❑ Contained stormwater release ❑ Quarterly non-stormwater _ Site Information Construction Site�Name ...__ _ .. Construction stage and ���� 9 oximate area oor feted activities ]:tofexposed site° Weather and Observations Date Rain Predicted to Occur: Predicted % chance of rain: ..............Estimate storm beginning: Estimate storm Estimate time Rain gauge duration: since last storm: reading. (date and time) (hours) (inches) (days or hours Observations: If yes identify location Odors Yes ❑ No ❑ Floating material Yes ❑ No ❑ Suspended Material Yes ElNo ❑ Sheen Yes ❑ No ❑ Discolorations Yes ❑ No ❑ Turbidity Yes ❑ No ❑� ...i._. _ _. ...... W � � ....._ .... �, ......._� Site Inspectons (add additional sheets or attached detailed BMP Inspection Checklists) Outfalls or BMPs Evaluated uated Deficiencies Noted Photos Taken...._... .... Ye .....0 No ❑ mmmmPhoto Re -. rence IDs: .............. ...... . fer Corrective Actions Identified (note if SWPPP/REAPchange is needed)' . _ ..- ........ __... _.. �..m.. ..._ - Inspector Information Inspector Name: Inspector Title:. .- .. . .................. -...._........_ ............... ...... Signature: .... .I . ............. I Date El Segundo Boulevard Improvements Project 60 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 ... ..... _. a .... ................... ..... ....... _...... Risk Level 2, 3: Effluent Sampling Field Log Sheets Boulevard Improvements Project WDID # TBD ITIT ITITIT _ _.. _ .._....... m.. E! Segundo BouleITIT Construction Site Name:. Time Start: ..... [�te: . - ---- Sampler: Sampling Event Type: p g❑ Stormwater ❑ Non stormwater ❑ Non -visible pollutant __..__ _.... .. _ _.. Field Meter Calibration ....:..... ....... ._ .. _ _...:. wrv�. � ....: ........ _. pH Meter ID No./Desc.; Turbidity Meter ID No./Desc.: Calibration Date/Time: I Calibration Date/Time: Field pH and Turbidity Measurements Discharge Location Description ... pH� m Turbidity Time ._...µmm _.. ............. ... Grab Samples Collected. Dischar e Loc._ ..... Tim e anon Description _ . Sample TYpem _...._ . ._.................................... _ ............................ ............... ....... _ ...._ .. _ . ...._ Additional Sampling Notes: Time End: EI Segundo Boulevard Improvements Project 61 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 62 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 _.. NAL Exceedance Evaluation Summary Repmmort (Risk Level vel 2, 3) Page of Project Name El Segundo Boulevard Improvements Project Project WDID Project Location Date of Exceedance NAL Daily Average ❑ pH ❑ Turbidity Type of Exceedance ❑ Other (specify) ❑ Field meter (Sensitivity: ) Measurement or Analytical Method ❑ Lab method (specify) (Reporting Limit: ) (MDL: ) ❑ pH pH units Calculated Daily Average ❑ Turbidity NTU Rain Gauge Measurement inches Compliance Storm Event inches (5-year, 24-hour event) Visual Observations on Day of Exceedance Description of BMPs in Place at Time of Event El Segundo Boulevard Improvements Project 63 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 64 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 SENDER COMMENTS ..... _.._._ ......... .. .............. ... RELINQUSHED BY: I .... ..... ..... _ .._.........._ _.. ...... .._ ..w ...._.__ .......... SIGNATURE PRINT) ..... ITITIT COMPANY DATE _- -_-.....------- TIME . _..... m„ LABORATORY _._._.. .. COMMENTS RECEIVED...BY...._. ....._...._,,. .._._....._.__._ : ......— .. ._ ���...._._. ..........._...._._.� ...._� SIGNATURE (PRINT)ww� „mmIT COMPANY ............. DATE .......... TIME El Segundo Boulevard Improvements Project 65 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 66 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 CSMP Attachment 5: Supplemental Information El Segundo Boulevard Improvements Project 67 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Section.; Referencel Project Plans and Specifications, City of El Segundo PW 23-02, dated August 12, 2022, prepared by MNS Engineers, Inc. State Water Resources Control Board (2009). Order 2009-0009-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: hftp://www.waterboards.ca.gov/water tissues/ ro grams/ torrmwater/construction.s tml. State Water Resources Control Board (2010). Order 2010-0014-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: bits .).//\fvww. wale/ boat ,, c�c vl m � m am IT mae f rr r a�� °step.a v �t mr c r luo hair n. State Water Resources Control Board (2012). Order 2012-0006-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: hftp://www.waterboar-ds.ca,.qov/water issues/ ror rams/stormwater/construction.shitmi. State Water Resources Control Board, Los Angeles Region (2021). Order R4-2021-0105, NPDES General Permit No. CAS004004: Waste Discharge Requirements and National Pollutant Discharge Elimination System (NPDES) Permit for Municipal Separate Storm Sewer System (MS4) Discharges Within the Coastal Watersheds of Los Angeles and Ventura Counties. Available on-line at: https://www.watterbDoarcdis.ca.gov/losangeles/water issues/ ro rams/stormwater/munici al/re ional ger mit. html. CASQA 2009, Stormwater BMP Handbook Portal: Construction, November 2009, www.casga.org El Segundo Boulevard Improvements Project 68 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Al: Risk Level Determination LEW.EPA.gov Start ate: 121'Ol/2022 End ate:12/3112022 Calculation Results Rainfalls erosivity factor (R Factor) = 4, 14 Location:-118.3874 , 33.9164 Annual R-value = 36.53 Annual R 36.53 LEW.EPA.aov o Total /o Calculated R 13.64 Caltran.s Water Quality P..... .......... ... hn nniti'ng Tool tu. w5rw�vYox..o b ,.:m aoyw -tee ,.x�wma .ra � �o.uwx �.�m..vvrrdm�t,a«w,u�w�w�w-mws.aWu+..ww...ws+bmm+.+�•m a, ouwm�wea�.�e+ �wi„++•�wm�u .w N Nina atlrr Map d r 15b ,�q v i f� ///% wI M 1 1 Latitude: 33.9164 Longitude:-118.3874 Cnitrane Water Quality Planning Tool �w.,aa.»w..aoe,u:ero�rup wmmw.�uNeho�=wear ✓^n rmm.ww, . ,.�. ....ww x�.•wrouw•ww�N,:e.�wwe ��Nmn«rN,dm�®unm.w,+m�+.rrws,�rw;.A�wW.o iw�nw. wm d�...�a«m.+o�� a Map Satellite Hiph Conuasi �mv i r w / )� _HIM / +,, MOIR „ El Segundo Boulevard Improvements Project 69 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 K-value % DSA 0.20 59 0.32 41 e Cal trans Wrater Quality Planning Tool 26,0Il�i�liUY�y ;-iii rr ( in / /. rr 1 1 -,'10-p,24-hr N.t, Syr: 1k, xn nh W.te hed q LS = 0.29, 0.44, 1.40 W LS-value /o DSA 0 0.29 29 0.44 41 1.40 30 Watershed Erosion Estimate =RxKxLSxCxP = 13.64 x 0.25 x 0.68 x 1.0x 1.0 = 2.3 tons/acres Sediment Risk Erosion Yemldm WWWWm Less than 15 tons / acre 15 to 75 tons / acre TIM. Low Medium More than 75 tons / acre High Receiving Water Risk On the most recent US EPA -approved 303(d) for w_. ater NO, no sedimen-t/siltation or---"-------- Low, since bodies impaired with sediment/siltation or turbidity OR turbidity 303(d) listings or at least TMDLs one "no" El Segundo Boulevard Improvements Project 70 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Has a US EPA -approved Total Maximum Daily Load (TMDL) implementation plan for sediment/siltation or turbidity CA Waterboards website link A.2. Does the disturbed area discharge to a waterbody SPAWN with designated beneficial uses of SPAWN & COLD & COLD MIGRATORY? (For help please review the appropriate Regional Board Basin Plan) MIGRATORY C01-nxi .L® Q..]Rt9°1snn iwg Tnol i Map m� i � Los MpNn� ••�•� � Wain.. WK a, Check: Project not within the 'red' .............._c � . ........,,, ....��....... Receiving g Water Risk Factor Project is Risk Factor El Segundo Boulevard Improvements Project 71 Preparation Date August 26, 2022 NO NO, since NO all 3 are not "yes" NO CASQA SWPPP Template January 2015 Agreement No. 6574 Appendix • El Segundo Boulevard Improvements Project 72 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 CITY OF LOS ANGELES LOS ANGELES INTERNATIONAL AIRPORT 0 1 MAPLE AVE fi cf) I-- 0 CAMPUS DR CITY OF EL SEGUNDO < MARIPOSA AVE LOS ANGELES COUNTY > -i 1 03 (UNINCORPORATED) Ld c/) GRAND AVE z > LU z U) < < LOS ANGELES AIR LU > FORCE BASE 0 z z 0 < 0 —.0 .J 10 EL SEGUNDO BLVD PROJECT F— U) 0 C) Q 0 LL < UTAH AVE CITY OF �HAWTHORNE e ALASKA AVE PL ROSECRANS AVE CITY OF MANHATTAN BEACH 100 E. Thousand Oaks Blvd. Suite 105 Thousand Oaks, CA 91360 OMNS Phone: 805-648-4840 www.mnsengineers.com CITY OF EL SEGUNDO EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PW 23-02 - VICINITY MAP 1500' 01 1500' SCALE: 1" = 1500' 2 eeme N o HO1VI� coQ W O OFZrnO roN i oo O� >>o ,.r-- z 33 °w<`unz° F�o� 9LL zo moo °dw 3v ?? �0 a3 4 YY AAi ° Cco Zw ¢° O <O C Z i0 N f(( 1 W y °� °a¢aaa�OrJ cCozy < ,n0 LL22wm Iir� W W n •Urrc�C�mc CU in OU< ewi,? ti0 CrcCUn ca vi� fnC U=WAD W LL y ; Q O JdN.1133HS33S J O C '✓' r ��� L OS•CZ tl15 3NIl HOltll1 W R O as � I `ww"I (L 31noN 31V1S) ' j° -' VMH0IH I°d. xa ......... ... in 1SVOO 3IdIOVd I lB .l i I o A fN ° w rLLI, ) I o d Z. Q w J S li p ' i O KI tl o N oPE c .Allp°II 0 I r 0 �lGd � I tt O p w v 0 E ( u 4 N l ) N °Z J l W J rc w E O Ou r I w LU w o, z ? 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I certify that I am a Qualified SWPPP Developer in good standing as of the date signed below." QSD's Signature Date QSD's Name QSD Certificate Number Title and Affiliation Telephone Number Address Email Summary of Amendment El Segundo Boulevard Improvements Project 74 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Log of Updated PRDs The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when a portion of the project is complete and/or conditions for termination of coverage have been met; when ownership of a portion of the project is purchased by a different entity; or when new acreage is added to the project. Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, with revisions and amendments recorded in Appendix D. Updated PRDs submitted electronically via SMARTS can be found in this Appendix. This appendix includes all of the following updated PRDs (check all that apply): ❑ Revised Notice of Intent (NOI); ❑ Revised Site Map; ❑ Revised Risk Assessment; ❑ New landowner's information (name, address, phone number, email address); and ❑ New signed certification statement. Legally Responsible Person [if organization] Signature of [Authorized Representative of] Legally Responsible Person or Approved Signatory Name of [Authorized Representative of] Legally Responsible Person or Approved Signatory El Segundo Boulevard Improvements Project 75 Preparation Date August 26, 2022 Date Telephone Number CASQA SWPPP Template January 2015 Agreement No. 6574 Appendix . .Schedule El Segundo Boulevard Improvements Project 76 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Appendix G Construction Activities, Materials Used, anli Associated Pollutants El Segundo Boulevard Improvements Project 77 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Table GA Construction Activities and Associated Pollutants .0_h.. ase Activity - . ............ Associated Materials or Pollutant Category (1) Pollutants Adhesives a Adhesives, glues, resins, Oil and Grease, Synthetic epoxy synthetics, PVC Organics cement a Caulks, sealers, putty, sealing agents .... . ........... . ................ . ............... Concrete Masonry Mason e Cement and brick dust Metals, Synthetic Organics • Colored chalks • Concrete curing compounds • Glazing compounds • Surfaces cleaners • Saw cut slurries Ii.l.e cutting . ... ... ..... Framing/Carpentry 9 Sawdust, particle board Metals, Synthetic Organics (Concrete Formwork) dust, and treated woods ...................... . . e Saw cut slurries .. . ........... Liquid waste ......... . - Wash waters Metals, Synthetic Organics * Irrigation line testing/ flushing mmmmm .... ................ . .. Painting __, o Paint thinners, acetone,mmmmmITITmm Metals, Synthetic Organics methyl ethyl ketone, stripper paints, lacquers, varnish, enamels, turpentine, gum spirit, solvents, dyes, stripping ments and sanding_ (D Removal of existing Demolition of asphalt, Metals, Oil and Grease, E 0- structures concrete, masonry, Synthetic Organics 0 framing, roofing, metal a) > a) ....... . ................. .... structures. . ................... o Soil Use of soil additives/ Nutrients preparation/amendments amendments . . Solid waste . .......... • Litter, trash and debris Gross Pollutants " Veqetation . ................ ..... . CU ----- Vehicle and equipment use o Equipment operation Oil and Grease a Equipment maintenance a Equipment washing 0 . ... . ....... . . ......... .........._.._mmm .... a Equipment fuelin . Asphalt paving/curbs * Hot and cold mix asphalt Oil and Grease U) Concrete Masonry '" e Cement and brick dust Metals, Synthetic Organics , Colored chalks a Concrete curing compounds a Glazing compounds (n CD e Sur -faces cleaners -C 9 Saw cut slurries C� a- ............ . ................. 9 Tile El Segundo Boulevard Improvements Project 78 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Tob|eG.1 Construction Activities and Associated Pollutants -Phase Activity Associated Materials or Pollutants Pollutant Category (1) Liquid waste 9 Wash waters Metals, Synthetic Organics 9 Irrigation line —waste §a"n"itary a Portable toilets Nutrients a Disturbance of existing sewer lines. id waste Litter, trash and debris Gross Pollutants Utility line testing and Hydrostatic test water Synthetic Organics V—ehicl e and equipment use Equipment operation Oil and Grease Equipment maintenance Equipment washing Equipment fueling Adhesives * Adhesives, glues, resins, Oil and Grease, Synthetic epoxy synthetics, PVC Organicsl cement a Caulks, sealers, putty, sealing agents and Framing/Carpentry Sawdust, particle board Metals, Synthetic Organics (Concrete Formwork) dust, and treated woods Saw cut slurries waste Wash waters Metals, Synthetic Organics Irrigation line Painting Paint thinners, acetone, Metals, Synthetic Organics methyl ethyl ketone, stripper paints, lacquers, U) varnish, enamels, CU _r_ turpentine, gum spirit, a- solvents, dyes, stripping CU Planting Vegetation a Vegetation control Nutrients, Metals, Synthetic La Management (pesticides/herbicides) Organics CU 2 a Plant maintenance Soil e Use of soil Nutrients Solid waste 9 Litter, trash and debris ross Pollutants (n hicle and equipment use - Equipment operation Oil and Grease cu o Equipment maintenance —J BSegundo Boulevard Improvements Project 79 CASOAGVVPPPTemplate Agreement No. 6574 Table GA Construction Activities and Associated Pollutants �..... ... __ _...... .........., .. .... _.. ...._. Phase ActivityAssociated Materials or Pollutant Category (1) Pollutants .......... ........ ��. _ ...�............. . .._ • Equipment fueling (1) Categories per CASQA BMP Handbook (i.e., Sediment, Nutrients, Bacteria and Viruses, Oil and Grease, Metals, Synthetic Organics, Pesticides, Gross Pollutants, and Vector Production) *Synthetic Organics are defined in Table 1.2 of the CASQA Stormwater BMP Handbook Portal: Construction as adhesives, cleaners, sealants, solvents, etc. These are generally categorized as VOCs or SVOCs. El Segundo Boulevard Improvements Project 80 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Appendix H BM�P Inspection Report Date and Time of Inspection: Date�� Report Written: Inspection Type: Weekly (Circle one) Complete Parts I,11, III and VII Construction Site Name: Construction stage and completed activities: Photos neken: (Ci cle..._............ �Yes Estimate storm beginning: (date and time) Estimate time since mm last storm: (days or hours) Pre -Storm During Rain Event Complete Parts Complete Parts 1, 11, 1,11, Ill, IV and Vll III, V, and VII Approximate area of site that is exposed: Photo Reference IDs: IBC Estimate storm duration: (hours) Rain gauge reading and location: (in) Post -Storm Complete Parts 1, ll, Ill, VI and VII Is a "Qualifying Event' predicted or did one occur (i.e., 0.5" rain with 48-hrs or greater between events)? (Y/N) If yes, summarize forecast: Inspector Name'; Signature: El Segundo Boulevard Improvements Project Preparation Date August 26, 2022 Inspector Title: Date: 81 CASQA SWPPP Template January 2015 Agreement No. 6574 Part II: BMP Observations. Describe deficienciesin Part III. Failures or Action Action other short Minimum BMPs for Risk Level Sites Required Implemented comings (yes/no) (Date) (yes, no, N/A) (3oud Housekeeping for Construction Materials " Inventory of produ:.ITIT__,_�,�—, ..__.._�..��. ...._ .._...._.. cts (excluding materials designed to be outdoors) Stockpiled construction ----—--------------- on materials not actively in use are�� covered and bermed All chemicals are stored in watertight containers with appropriate secondary containment, or in a completely enclosed storage shed Construction materials are minimally exposed to precipitation BMPsmmpreventin the off -site tracking ........�........ . ............. preventing ng of materials are implemented and properly effective F�o�selk ing for W ste anag r>f�nt Wash/rinse water and materials are prevented from being disposed into the storm drain system Portable toilets are contained to prevent discharges of waste Sanitation facilities are clean and with no apparent for leaks and spills _ ................................. _........ _.... _...............__ Equipment is in place to cover waste disposal containers at the end of business day and during rain events w.............._ -_ . ......................... Discharges from .._._... g mmaste disposal containers are prevented from discharging to the storm drain system / receiving water .......................................aste material is securely — ..._.. mm...._.... ............................... _... Stockpiled w protected from wind and rain if not actively in use Procedures are in place for addressing h mm azardous and non- hazardous spills Appropriate spill response personnel are assigned and trained Equipment a n ^ .............................._ .__-......_...__---------- _,............. d materials for cleanup of spills is available onsite .................. Washout areas e. _._.................__...._........ w......._...._. ._ ( g., concrete) are contained appropriately to prevent discharge or infiltration into the underlying soil Good Hou�keepr�g fo;YeF�icle Starae and Ma�nt�noe ;ire% i /ii%%///ricq„ i, ii;✓,,,, oii. M. .............s........m...� r Measures are in place to prevent oil, grease, or r fuel from leaking into the ground, storm drains, or surface waters urequipment ......��������� --------- All e _ w _.... q p vehicles are fueled, maintained, and stored in Hated area with appropriate BMPs ............des.��........_...�_.......................................� _W ........._________________ .... Vehicle and equipment leaks are cleaned immediately and disposed of properly El Segundo Boulevard Improvements Project 82 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Part IL BMP Observations' Continued. Describe deficiencies in Part III. ------ -_____. Adequately designed, implemented and Action Action Minimum BMPs for Risk Level Sites effective Required Implemented (yes, no, N/A) (Yes/no) (Date) Good Housekeeping'for'Landscape Materials Stockpiled landscape materials such as mulches and topsoil are contained and covered when not actively in use -__ �� - Erodible landscape material has not been applied 2 days �����- before a forecasted rain event or during an event ........................-���- --- ------ --...............�... �........ Erodible landscape materials are applied at quantities and rates In accordance with manufacturer recommendations .Bagg_......and.�............ _... �_�..........m�� .......... ........ ._� .._............. .._ . Bagged erodible landscape materials are stored on pallets and covered Good, Housekeeping for Air Deposition of Site Materials __..._ _...-..._ ..... . __. . ........ Good housekeeping measures are implemented onsite to control the air deposition of site materials and from site operations Nora-Sfoimwa%r MangWemerit _ Non-Stormwater discharges are properly controlled ._..,. _.. - Vehicles are washed in a manner to prevent non-stormwater �� -- discharges to surface waters or drainage systems Streets are cleaned in a manner to prevent unauthorized non- stormwater discharges to surface waters or drainage systems. �—, ErosioriCoiitrols Wind erosion controls are effectively implemented _. .._....... ... w ___ .............. Effective soil cover is provided for disturbed areas inactive (i.e., not scheduled to be disturbed for 14 days) as well as finished slopes, open space, utility backfill, and completed lots The use of plastic materials is in cases when.. a��.....�....r �._.......__.._......__......., rs� is limited more sustainable, environmentally friendly alternative exists. W Sediment Controls' Perimeter controls are established and effective at controlling erosion and sediment discharges from the site Entrances and exits are stabilized to control erosion -and _- sediment discharges from the site Sediment basins are properly maintained ._..,. ...... . . _____-.-........m_.w _ ............. .... Linear sediment control along toe of slope, face of slope an at grade breaks (Risk Level 2 & 3 Only) entrances and Limit ................_ _ construction activity to and from site to entra m WWWWWW exits that employ effective controls to prevent offsite tracking (Risk Level 2 & 3 Only) is and perimeter controls runoff Ensure l storm, rain is controls at nreexs ontrBIMPs anddpollutaln entrances and it .. _...._ ..._...... ..................... E.... w _._._........ ....m_ El Segundo Boulevard Improvements Project 83 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 84 Preparation Date August 26, 2022 CASQA SWPPP Template January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 85 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 El Segundo Boulevard Improvements Project 86 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Appendix I Training Reporting Form Trained Contractor Personnel Log Stormwater Management Training Log and Documentation Project Name: El Se undo Boulevard Improvements Project WDID #: WDID # TBD Stormwater Management Topic: (check as appropriate) ❑ Erosion Control ❑ Sediment Control ❑ Wind Erosion Control ❑ Tracking Control ❑ Non-Stormwater Management ❑ Waste Management and Materials Pollution Control ❑ Stormwater Sampling Specific Training Objective Location Date, Time, Course Length (hours) Instructor Name & Contact El Segundo Boulevard Improvements Project 87 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 PartiesAppendix J Responsible Authorization, of ApprovedSignatories Project Name. El Segundo Boulevard Improvements Protect WDID #: WDID # TBD Approved signatories are persons who have been authorized by the Legally Responsible Person (LRP) to sign, certify, and electronically submit Permit Registration Documents, Notices of Termination, and any other documents, reports, or information required by the General Permit, the State or Regional Water Board, or U.S. EPA. The LRP authorizes the following person to be an approved signatory: Name of Personnel, Company / Agency Project Role Signature Date LRP Name and Title LRP Contact LRP Signature Date El Segundo Boulevard Improvements Project 88 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 QSD Certification Project Name: El Segundo Boulevard Improvements Project. WDID #: WDID # TBD CE 'R ",r 1, F I (�AT E 0 1" T R A I N I N G CALIFORNIA CONSTRUCTION GENERAL FERMIT CIVAI.... I F I E I SWPPI"' DEVELOPER(0,M) SWPPP PRACTITIONER(Q.,W) Sam Potts Apr 21, 2021 - Apr 21, 2023 Certificate # 27824 California Stormwater Quality Association and California Coristruction General Permit Training 74arn El Segundo Boulevard Improvements Project 89 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Identification of QSP Project Name: Ell Segundo Boulevard Improvements Project WDID #: WDID # TBD The following are QSPs associated with this project Name of PersonnelM Company Date 1 If additional QSPs are re uire.... "..... t'h..................................................................._............... ........ ...d .for ti .......her () q don the job site add additional lines and include information here El Segundo Boulevard Improvements Project 90 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Authorization of Data Su fitters Project Name: EL Segundo Boulevard Improvements Project WDID #: WDID # TBD The Legally Responsible Person (LRP) or their Approved Signatory (AS) authorizes the following person to be a data submitter: Name of Personnel, Company/Agency Project Role Signature Date LRP/AS Name LRP /AS Contact info LRP/AS Signature Date The Legally Responsible Person (LRP) or their Approved Signatory (AS) authorizes the following person to be a data submitter: Name of Personnel, Company/Agency Project Role Signature Date LRP / AS Name LRP /AS Contact info LRP/AS Signature Date El Segundo Boulevard, Improvements Project 91 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Appendix K • • and Subcontractors Company / Contact Title Address Phone Phone Discipline Name Number Number (24/7) Contractor 1, JS Jane Smith Superintendent 1111 Address (661) 661-6611 (661) 661-6611 Inc. / Prime Way Contractor 1, Josh Smithers Superintendent 1111 Address (661) 661-6611 (661) 661-6611 Smithers and Way Sister, Inc. / Subcontractor ............ Contractor 10, Joe Rogers Superintendent 1111 Address (661) 661-6611 (661) 661-6611 Inc. / Third -Party Way Contractor (i.e. SCE) in support of the project El Segundo Boulevard Improvements Project 92 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Construction El Segundo Boulevard Improvements Project 93 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 Agreement No. 6574 Scheduling Description and Purpose Scheduling is the development of a written plan that includes sequencing of construction activities and the implementation of BMPs such as erosion control and sediment control while taking local climate (rainfall, wind, etc.) into consideration. The purpose is to reduce the amount and duration of soil exposed to erosion by wind, rain, runoff, and vehicle tracking, and to perform the construction activities and control practices in accordance with the planned schedule. Suitable Applications Proper sequencing of construction activities to reduce erosion potential should be incorporated into the schedule of every construction project especially during rainy season. Use of other, more costly yet less effective, erosion and sediment control BMPs may often be reduced through proper construction sequencing. Limitations a Environmental constraints such as nesting season prohibitions reduce the full capabilities of this BMP. Implementation a Avoid rainy periods. Schedule major grading operations during dry months when practical. Allow enough time before rainfall begins to stabilize the soil with vegetation or physical means or to install sediment trapping devices. a Plan the project and develop a schedule showing each phase of construction. Clearly show how the rainy season relates Categories EC Erosion Control�rv���mm�C SE Sediment Control 0 TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Primary Objective 0 Secondary Objective Targeted Constituents SedimentM,.��.,a�nn�....w._......�.� Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ..�,.��.,..,..,�,. If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 Scheduling EC-:1 to soil disturbing and re -stabilization activities. Incorporate the construction schedule into the SWPPP. Include on the schedule, details on the rainy season implementation and deployment of: - Erosion control BMPs - Sediment control BMPs - Tracking control BMPs - Wind erosion control BMPs - Non-stormwater BMPs - Waste management and materials pollution control BMPs • Include dates for activities that may require non-stormwater discharges such as dewatering, sawcutting, grinding, drilling, boring, crushing, blasting, painting, hydro -demolition, mortar mixing, pavement cleaning, etc. • Work out the sequencing and timetable for the start and completion of each item such as site clearing and grubbing, grading, excavation, paving, foundation pouring utilities installation, etc., to minimize the active construction area during the rainy season. - Sequence trenching activities so that most open portions are closed before new trenching begins. - Incorporate staged seeding and re -vegetation of graded slopes as work progresses. - Schedule establishment of permanent vegetation during appropriate planting time for specified vegetation. • Non -active areas should be stabilized as soon as practical after the cessation of soil disturbing activities or one day prior to the onset of precipitation. s Monitor the weather forecast for rainfall. • When rainfall is predicted, adjust the construction schedule to allow the implementation of soil stabilization and sediment treatment controls on all disturbed areas prior to the onset of rain. • Be prepared year-round to deploy erosion control and sediment control BMPs. Erosion may be caused during dry seasons by un-seasonal rainfall, wind, and vehicle tracking. Keep the site stabilized year-round and retain and maintain rainy season sediment trapping devices in operational condition. ■ Apply permanent erosion control to areas deemed substantially complete during the project's defined seeding window. Avoid soil disturbance during periods with high wind velocities. Costs Construction scheduling to reduce erosion may increase other construction costs due to reduced economies of scale in performing site grading. The cost effectiveness of scheduling techniques December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 Scheduling EC- 1 should be compared with the other less effective erosion and sedimentation controls to achieve a cost-effective balance. Inspection and Maintenance in Verify that work is progressing in accordance with the schedule. If progress deviates, take corrective actions. a, Amend the schedule when changes are warranted. a Amend the schedule prior to the rainy season to show updated information on the deployment and implementation of construction site BMPs. References Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities Developing Pollution Prevention Plans and Best Management Practices (EPA 832-R-92-005), U.S. Environmental Protection Agency, Office of Water, September 1992. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 _ Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control _._ ...... Legend: - �........ .. .._... 0 Primary Objective ❑x Secondary Objective a1 Targeted Constituents Description and Purpose Sediment ........ Carefully planned preservation of existing vegetation minimizes Nutrients the potential of removing or injuring existing trees, vines, shrubs, and grasses that protect soil from erosion. Trash Metals Suitable Applications Bacteria Preservation of existing vegetation is suitable for use on most Oil and Grease projects. Large project sites often provide the greatest Organics opportunity for use of this BMP. Suitable applications include the following: ..... �......,,... PotentialAlternatives • Areas within the site where no construction activity occurs None or occurs at a later date. This BMP is especially suitable to multi year projects where grading can be phased. • Areas where natural vegetation exists and is designated for preservation. Such areas often include steep slopes, watercourse, and building sites in wooded areas. ^ • Areas where local, state, and federal government require If User/Subscriber modifies this fact sheet in any way, the CASQA preservation, such as vernal pools, wetlands, marshes, name/logo and footer below must be certain oak trees, etc. These areas are usually designated on removed from each page and not the plans, or in the specifications, permits, or appear on the modified version, environmental documents. s Where vegetation designated for ultimate removal can be temporarily preserved and be utilized for erosion control and sediment control. a Protecting existing vegetation buffers and swales. December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 Limitations ■ Requires forward planning by the owner/developer, contractor, and design staff. ■ Limited opportunities for use when project plans do not incorporate existing vegetation into the site design. For sites with diverse topography, it is often difficult and expensive to save existing trees while grading the site satisfactory for the planned development. Implementation The best way to prevent erosion is to not disturb the land. In order to reduce the impacts of new development and redevelopment, projects may be designed to avoid disturbing land in sensitive areas of the site (e.g., natural watercourses, steep slopes), and to incorporate unique or desirable existing vegetation into the site's landscaping plan. Clearly marking and leaving a buffer area around these unique areas during construction will help to preserve these areas as well as take advantage of natural erosion prevention and sediment trapping. Existing vegetation to be preserved on the site must be protected from mechanical and other injury while the land is being developed. The purpose of protecting existing vegetation is to ensure the survival of desirable vegetation for shade, beautification, and erosion control. Mature vegetation has extensive root systems that help to hold soil in place, thus reducing erosion. In addition, vegetation helps keep soil from drying rapidly and becoming susceptible to erosion. To effectively save existing vegetation, no disturbances of any kind should be allowed within a defined area around the vegetation. For trees, no construction activity should occur within the drip line of the tree. Timing a Provide for preservation of existing vegetation prior to the commencement of clearing and grubbing operations or other soil disturbing activities in areas where no construction activity is planned or will occur at a later date. Design and Layout Mark areas to be preserved with temporary fencing. Include sufficient setback to protect roots. — Orange colored plastic mesh fencing works well. — Use appropriate fence posts and adequate post spacing and depth to completely support the fence in an upright position. in Locate temporary roadways, stockpiles, and layout areas to avoid stands of trees, shrubs, and grass. in Consider the impact of grade changes to existing vegetation and the root zone. in Maintain existing irrigation systems where feasible. Temporary irrigation may be required. in, Instruct employees and subcontractors to honor protective devices. Prohibit heavy equipment, vehicular traffic, or storage of construction materials within the protected area. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 Preservation is ing Vegetation • Consider pruning or mowing vegetation instead of removing it to allow for regrowth. • If possible, retain vegetation buffer around the site and adjacent waterways. Costs There is little cost associated with preserving existing vegetation if properly planned during the project design, and these costs may be offset by aesthetic benefits that enhance property values. During construction, the cost for preserving existing vegetation will likely be less than the cost of applying erosion and sediment controls to the disturbed area. Replacing vegetation inadvertently destroyed during construction can be extremely expensive, sometimes in excess of $1o,000 per tree. Inspection and Maintenance During construction, the limits of disturbance should remain clearly marked at all times. Irrigation or maintenance of existing vegetation should be described in the landscaping plan. If damage to protected trees still occurs, maintenance guidelines described below should be followed: Verify that protective measures remain in place. Restore damaged protection measures immediately. • Serious tree injuries shall be attended to by an arborist. • Damage to the crown, trunk, or root system of a retained tree shall be repaired immediately. w Trench as far from tree trunks as possible, usually outside of the tree drip line or canopy. Curve trenches around trees to avoid large roots or root concentrations. If roots are encountered, consider tunneling under them. When trenching or tunneling near or under trees to be retained, place tunnels at least 18 in. below the ground surface, and not below the tree center to minimize impact on the roots. A Do not leave tree roots exposed to air. Cover exposed roots with soil as soon as possible. If soil covering is not practical, protect exposed roots with wet burlap or peat moss until the tunnel or trench is ready for backfill. • Cleanly remove the ends of damaged roots with a smooth cut. • Fill trenches and tunnels as soon as possible. Careful filling and tamping will eliminate air spaces in the soil, which can damage roots. • If bark damage occurs, cut back all loosened bark into the undamaged area, with the cut tapered at the top and bottom and drainage provided at the base of the wood. Limit cutting the undamaged area as much as possible. • Aerate soil that has been compacted over a trees root zone by punching holes 12 in. deep with an iron bar and moving the bar back and forth until the soil is loosened. Place holes 18 in. apart throughout the area of compacted soil under the tree crown. • Fertilization: December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 ISO - Fertilize trees in the late fall or early spring. Although to note, many native species do not require fertilization. - Apply fertilizer to the soil over the feeder roots and in accordance with label instructions, but never closer than 3 ft to the trunk. Increase the fertilized area by one-fourth of the crown area for conifers that have extended root systems. a Retain protective measures until all other construction activity is complete to avoid damage during site cleanup and stabilization. References County of Sacramento Tree Preservation Ordinance, September 1981. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for The Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Hydraulic Mulch EC-3 Description and Purpose Hydraulic Mulch consists of various types of fibrous materials mixed with water and sprayed onto the soil surface in slurry form to provide a layer of temporary protection from wind and water erosion. Suitable Applications Hydraulic mulch as a temporary, stand alone, erosion control BMP is suitable for disturbed areas that require temporary protection from wind and water erosion until permanent soil stabilization activities commence. Examples include: a: Rough -graded areas that will remain inactive for longer than permit -required thresholds (e.g., 14 days) or otherwise require stabilization to minimize erosion or prevent sediment discharges. • Soil stockpiles. s Slopes with exposed soil between existing vegetation such as trees or shrubs. • Slopes planted with live, container -grown vegetation or plugs. • Slopes burned by wildfire. • To stabilize earthen berms e Areas seeded by broadcasting or drilling Categories EC ErosionControl SE Sediment Control TC Tracking Control WE Wind Erosion Control ❑x NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ❑x Secondary Category Targeted Constituents Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-4-Hydroseeding EC-5 Soil Binders EC-6 Straw Mulch EC-7 Geotextiles and Mats EC-8 Wood Mulching EC-14 Compost Blanket EC-16 Non -Vegetative Stabilization If User/Subscriber modifies this fact MmMM sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 Hydraulic Mulch - a Temporary stabilization during high wind conditions Hydraulic mulch can also be applied to augment other erosion control BMPs such as: • In conjunction with straw mulch (see EC-6 Straw Mulch) where the rate of hydraulic mulch is reduced to 100-500 lbs per acre and the slurry is applied over the straw as a tackifying agent to hold the straw in place. • Supplemental application of soil amendments, such as fertilizer, lime, gypsum, soil bio- stimulants or compost. Limitations In general, hydraulic mulch is not limited by slope length, gradient or soil type. However, the following limitations typically apply: • Most hydraulic mulch applications, particularly bonded fiber matrices (BFMs), require at least 24 hours to dry before rainfall occurs. • Temporary applications (i.e., without a vegetative component) may require a second application in order to remain effective for an entire rainy season. • Treatment areas must be accessible to hydraulic mulching equipment. • Availability of water sources in remote areas for mixing and application. • As a stand-alone temporary BMP, hydraulic mulches may need to be re -applied to maintain their erosion control effectiveness, typically after 6-12 months depending on the type of mulch used. • Availability of hydraulic mulching equipment may be limited just prior to the rainy season and prior to storms due to high demand. • Cellulose fiber mulches alone may not perform well on steep slopes or in course soils. • This BMP consists of a mixture of several constituents (e.g., fibers/mulches, compost, tackifiers, and other chemical constituents), some of which may be proprietary and may come pre -mixed by the manufacturer. The water quality impacts of these constituents are relatively unknown, and some may have water quality impacts due to their chemical makeup. Refer to specific chemical properties identified in the product Safety Data Sheet (may not include ecological information); products should be evaluated for project -specific implementation by the SWPPP Preparer. Refer to factsheet EC-05 for further guidance on selecting soil binders. ■ A water supply is needed to refill hydro mulch equipment tank. a Cannot be disturbed by walking or driving on the surface after application. • Recommend using in conjunction with other BMPs (i.e., fiber rolls, etc.). December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Hydraulic Implementation • Where feasible, it is preferable to prepare soil surfaces prior to application by roughening embankments and fill areas with a crimping or punching type roller or by track walking. s The majority of hydraulic mulch applications do not necessarily require surface/soil preparation (See EC-15 Soil Preparation) although in almost every case where re -vegetation is included as part of the practice, soil preparation can be beneficial. One of the advantages of hydraulic mulch over other erosion control methods is that it can be applied in areas where soil preparation is precluded by site conditions, such as steep slopes, rocky soils, or inaccessibility. • Avoid mulch over spray onto roads, sidewalks, drainage channels, existing vegetation, etc. ■ Hydraulic mulching is generally performed utilizing specialized machines that have a large water-holding/mixing tank and some form of mechanical agitation or other recirculation method to keep water, mulch and soil amendments in suspension. The mixed hydraulic slurry can be applied from a tower sprayer on top of the machine or by extending a hose to areas remote from the machine. • Where possible apply hydraulic mulch from multiple directions to adequately cover the soil. Application from a single direction can result in shadowing, uneven coverage and failure of the BMP. ■ Hydraulic mulch can also include a vegetative component, such as seed, rhizomes, or stolons (see EC-4 Hydraulic Seed). • Typical hydraulic mulch application rates range from 2,000 pounds per acre for standard mulches (SMs) to 3,500 lbs. per acre for BFMs. However, the required amount of hydraulic mulch to provide adequate coverage of exposed topsoil may appear to exceed the standard rates when the roughness of the soil surface is changed due to soil preparation methods (see EC-15 Soil Preparation) or by slope gradient. • Other factors such as existing soil moisture and soil texture can have a profound effect on the amount of hydraulic mulch required (i.e. application rate) applied to achieve an erosion - resistant covering. • Avoid use of mulch without a tackifier component, especially on slopes. • Mulches used in the hydraulic mulch slurry can include: - Cellulose fiber (paper- or corn -based) - Wood fibers - Cotton - Synthetics - Compost (see EC-14, Compost Blanket) - Straw December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Hydraulic a Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Categories of Hydraulic Mulches Standard Hvdw raulk P luLeh SM. Standard hydraulic mulches are generally applied at a rate of 2,000 lbs. per acre and are manufactured containing around 5% tackifier (i.e. soil binder), usually a plant -derived guar or psyllium type. Most standard mulches are green in color derived from food -color based dyes. j:.,Ljraulic Matrices HM and Staabilized. Filer Matrices (SFM1 Hydraulic matrices and stabilized fiber matrices are slurries which contain increased levels of tackifiers/soil binders; usually 10% or more by weight. HMs and SFMs have improved performance compared to a standard hydraulic mulch (SM) because of the additional percentage of tackifier and because of their higher application rates, typically 2,500 — 4,000 lbs. per acre. Hydraulic matrices can include a mixture of fibers, for example, a 50/5o blend of paper and wood fiber. In the case of an SFM, the tackifier/soil binder is specified as a polyacrylamide (PAM). Bonded Filler Matrix BEM Bonded fiber matrices (BFMs) are hydraulically -applied systems of fibers, adhesives (typically guar- or polymer -based) and chemical cross -links. Upon drying, the slurry forms an erosion - resistant blanket that prevents soil erosion and promotes vegetation establishment. The cross - linked adhesive in the BFM should be biodegradable and should not dissolve or disperse upon re -wetting. BFMs are typically applied at rates from 3,O0O to 4,000 lbs. per acre based on the manufacturer's recommendation. BFMs should not be applied immediately before, during or immediately after rainfall or if the soil is saturated. Depending on the product, BFMs typically require 12 to 24 hours to dry and become effective. I-Ndraulic. Coinpost Matrix (HCM) Hydraulic compost matrix (HCM) is a field -derived practice whereby finely graded or sifted compost is introduced into the hydraulic mulch slurry. A guar -type tackifier can be added for steeper slope applications as well as any specified seed mixtures. An HCM can help to accelerate seed germination and growth. HCMs are particularly useful as an in -fill for three-dimensional re -vegetation geocomposites, such as turf reinforcement mats (TRM) (see EC-7 Geotextiles and Mats). Costs Average installed costs for hydraulic mulch categories are is provided in Table 1, below.. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casga.org Agreement No. 6574 Hydraulic Mulch EC-3 Table HYDRAULIC MULCH BMPs INSTALLED COSTS BMP �InstalledCost/Acre .......... Standard Hydraulic Mulching (SM) ......................................_.....-wddd_ $2 100 - $4,700 per acre i Hydraulic Matrices (HM) and Stabilized Fiber Matrices Guar -based $2,600 - $5,200 per acre PAM-based .....,.ww ...................-----_________..........._-..... $3,200 - $7,200 per acre w Bonded Fiber Matrix (BFM)............... ........._.m..5m000..:..$8,800 per acre Hydraulic Compost Matrix (HCM) $3,800 - $4,500 per acre Source: Cost information received from individual product manufacturers solicited by Geosyntec Consultants (2004). Adjusted for inflation (2016 dollars) by Tetra Tech, Inc Inspection and Maintenance 81 Maintain an unbroken, temporary mulched ground cover throughout the period of construction when the soils are not being reworked. • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident should be repaired and BMPs re -applied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re -application of BMPs. • Compare the number of bags or weight of applied mulch to the area treated to determine actual application rates and compliance with specifications. References Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Controlling Erosion of Construction Sites, Agricultural Information #347, U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) (formerly Soil Conservation Service — SCS). Guides for Erosion and Sediment Control in California, USDA Soils Conservation Service, January 1991. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Sedimentation and Erosion Control, an Inventory of Current Practices Draft, US EPA, April 1990. December 2019 CASQA BMP Handbook 5 of 6 Construction www.casqa.org Agreement No. 6574 Hydraulic Soil Erosion by Water, Agriculture Information Bulletin *513, U.S. Department of Agriculture, Soil Conservation Service. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999 Stormwater Management of the Puget Sound Basin, Technical Manual, Publication *91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 6 of 6 Construction www.casqa.org Agreement No. 6574 roseeoing EC77-4; Description and Purpose Hydroseeding typically consists of applying a mixture of a hydraulic mulch, seed, and water with the possible addition of tackifier, compost, mycorrhizae inoculant, fertilizer, and/or soil conditioner, to temporarily protect exposed soils from erosion by water and wind. Hydraulic seeding, or hydroseeding, is simply the method by which temporary or permanent seed is applied to the soil surface and temporary erosion control is established by means of the mulch component. Suitable Applications Hydroseeding is suitable for disturbed areas requiring temporary protection until permanent stabilization is established, for disturbed areas that will be re -disturbed following an extended period of inactivity, or to apply permanent stabilization measures. Hydroseeding without mulch or other cover (e.g., EC-7, Geotextiles and Mats) is not a stand-alone erosion control BMP and should be combined with additional measures until vegetation establishment. Typical applications for hydroseeding include: Disturbed soil/graded areas where permanent stabilization or continued earthwork is not anticipated prior to seed germination. a Cleared and graded areas exposed to seasonal rains or temporary irrigation. m To vegetate swales and earthen berms. Categories EC Erosion Control 0 SE Sediment Control TC Tracking Control WE Wind Erosion Control 21 NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control .-........................................... Legend: 0 Primary Category 0 Secondary Category Targeted rvConstituents Sediment"�.,�ww�Mm.m._-,�.�,„�.�� Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-3 Hydraulic Mulch EC-5 Soil Binders EC-6 Straw Mulch EC-7 Geotextiles and Mats EC-8 Wood Mulching EC-14 Compost Blanket EC-16 Non -Vegetative Stabilization If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 4 Construction www.casga.org Agreement No. 6574 Hydros,eed"ing EC-4 Areas not subject to heavy wear by construction equipment or high traffic. Limitations Availability of hydroseeding equipment maybe limited just prior to the rainy season and prior to storms due to high demand. a Hydraulic seed should be applied with hydraulic mulch or a stand-alone hydroseed application should be followed by one of the following: - Straw mulch (see Straw Mulch EC-6) - Rolled erosion control products (see Geotextiles and Mats EC-7) Application of Compost Blanket (see Compost Blanket EC-14) Hydraulic seed may be used alone only on small flat surfaces when there is sufficient time in the season to ensure adequate vegetation establishment and coverage to provide adequate erosion control. • Hydraulic seed without mulch does not provide immediate erosion control. • Temporary seeding may not be appropriate for steep slopes (i.e., slopes readily prone to rill erosion or without sufficient topsoil). ■ Temporary seeding may not be appropriate in dry periods without supplemental irrigation. • Temporary vegetation may have to be removed before permanent vegetation is applied. i Temporary vegetation may not be appropriate for short term inactivity (i.e., less than 3-6 months). ■ Vegetation may not establish when hydroseed is applied to very compact soils. ■ Mulch may inhibit germination when applied at high rates. ■ This BMP consists of a mixture of several constituents (e.g., fibers/mulches, tackifiers, and other chemical constituents), some of which may be proprietary and may come pre -mixed by the manufacturer. The water quality impacts of these constituents are relatively unknown, and some may have water quality impacts due to their chemical makeup. Additionally, these constituents may require non -visible pollutant monitoring. Refer to specific chemical properties identified in the product's Safety Data Sheet (SDS), although, note that not all SDS's provide ecological information; products should be evaluated for project -specific implementation by the QSD. Refer to fact sheet EC-05, Soil Binders, for further guidance on selecting soil binders. Implementation In order to select appropriate hydraulic seed mixtures, an evaluation of site conditions should be performed with respect to: December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 - Soil conditions - Maintenance requirements - Site topography and exposure (sun/wind) - Sensitive adjacent areas - Season and climate - Water availability - Vegetation types - Plans for permanent vegetation The local office of the U.S.D.A. Natural Resources Conservation Service (NRCS), Resource Conservation Districts and Agricultural Extension Service can provide information on appropriate seed mixes. The following steps should be followed for implementation: s Where appropriate or feasible, soil should be prepared to receive the seed by disking or otherwise scarifying (See EC-15, Soil Preparation) the surface to eliminate crust, improve air and water infiltration and create a more favorable environment for germination and growth. • Avoid use of hydraulic seed in areas where the BMP would be incompatible with future earthwork activities. • Hydraulic seed can be applied using a multiple step or one step process. - In a multiple step process, hydraulic seed is applied first, followed by mulch or a Rolled Erosion Control Product (RECP). - In the one step process, hydraulic seed is applied with hydraulic mulch in a hydraulic matrix. When the one step process is used to apply the mixture of fiber, seed, etc., the seed rate should be increased to compensate for all seeds not having direct contact with the soil. • All hydraulically seeded areas should have mulch, or alternate erosion control cover to keep seeds in place and to moderate soil moisture and temperature until the seeds germinate and grow. All seeds should be in conformance with the California State Seed Law of the Department of Agriculture. Each seed bag should be delivered to the site sealed and clearly marked as to species, purity, percent germination, dealer's guarantee, and dates of test. The container should be labeled to clearly reflect the amount of Pure Live Seed (PLS) contained. All legume seed should be pellet inoculated. Inoculant sources should be species specific and should be applied at a rate of 2 lb of inoculant per too lb seed. * Commercial fertilizer should conform to the requirements of the California Food and Agricultural Code, which can be found at: l� t ww w 1 infr ,ca.g Lv al f"ac table of coot nts.latr 'I. Fertilizer should be pelleted or granular form. Follow up applications should be made as needed to cover areas of poor coverage or germination/vegetation establishment and to maintain adequate soil protection. Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casga.org Agreement No. 6574 Hydrosieieding EC-4 a Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Costs Average cost for installation and maintenance may vary from as low as $ 2,400 per acre for flat slopes and stable soils, to $5,200 per acre for moderate to steep slopes and/or erosive soils. Cost of seed mixtures vary based on types of required vegetation. BMP Installed Cost per Acre Hydraulic Seed $2,400-$5,200 Source: Cost information received from individual product manufacturers solicited by Geosy ntec Consultants (2004). Adjusted for inflation (2o16 dollars) by Tetra Tech, Inc. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident should be repaired and BMPs re -applied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re -application of BMPs. • Where seeds fail to germinate, or they germinate and die, the area must be re -seeded, fertilized, and mulched within the planting season, using not less than half the original application rates. • Irrigation systems, if applicable, should be inspected daily while in use to identify system malfunctions and line breaks. When line breaks are detected, the system must be shut down immediately and breaks repaired before the system is put back into operation. ■ Irrigation systems should be inspected for complete coverage and adjusted as needed to maintain complete coverage. References Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999• December 2019 CASQA BMP Handbook 4 of 4 Construction www.casga.org Agreement No. 6574 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category 0 Secondary Category OR 113 Targeted Constituents Description and Purpose Sediment��� C�1 Soil binding consists of application and maintenance of a soil Nutrients stabilizer to exposed soil surfaces. Soil binders are materials Trash applied to the soil surface to temporarily prevent water and wind induced erosion of exposed soils on construction sites. Metals Bacteria Suitable Applications Oil and Grease Soil binders are typically applied to disturbed areas requiring Organics temporary protection. Because soil binders, when used as a stand-alone practice, can often be incorporated into the soil, . w.. they are a good alternative to mulches in areas where gradingves Potential Alternatives activities will soon resume. Soil binders are commonly used in EC-3 Hydraulic Mulch the following areas: EC-4 Hydroseeding Rough graded soils that will be inactive for a short period of EC-6 Straw Mulch time. EC-7 Geotextiles and Mats a Soil stockpiles. EC-8 Wood Mulching • Temporary haul roads prior to placement of crushed rock. If User/Subscriber modifies this factsheet in any way, the CASQA • name/logo and footer below must be Compacted soil road base. removed from each page and not • Construction staging, materials storage, and layout areas. appear on the modified version. • Slopes and areas requiring stabilization prior to rain. • Disturbed areas subject to high winds. December 2019 CASQA BMP Handbook 1 of 9 Construction www.casqa.org Agreement No. 6574 Limitations • Soil binders are temporary in nature and may need reapplication. • Soil binders require a minimum curing time until fully effective, as prescribed by the manufacturer. Curing time may be 24 hours or longer. Soil binders may need reapplication after a storm event. • Soil binders will generally experience spot failures during heavy rainfall events. If runoff penetrates the soil at the top of a slope treated with a soil binder, it is likely that the runoff will undercut the stabilized soil layer and discharge at a point further down slope. • Plant -material -based soil binders do not generally hold up to pedestrian or vehicular traffic across treated areas as well as polymeric emulsion blends or cementitious-based binders. ■ Soil binders may not sufficiently penetrate compacted soils. • Some soil binders are soil texture specific in terms of their effectiveness. For example, polyacrylamides (PAMs) work very well on silt and clayey soils but their performance decreases dramatically in sandy soils. • Some soil binders may not perform well with low relative humidity. Under rainy conditions, some agents may become slippery or leach out of the soil. • Soil binders may not cure if low temperatures occur within 24 hours of application. • The water quality impacts of some chemical soil binders are relatively unknown, and some may have water quality impacts due to their chemical makeup. Additionally, these chemicals may require non -visible pollutant monitoring. Products should be evaluated for project - specific implementation by the SWPPP Preparer. Refer to the product Material Safety Data Sheet for chemical properties. Implementation General Considerations • Soil binders should conform to local municipality specifications and requirements. • Site soil types will dictate appropriate soil binders to be used. • A soil binder must be environmentally benign (non -toxic to plant and animal life), easy to apply, easy to maintain, economical, and should not stain paved or painted surfaces. Soil binders should not pollute stormwater when cured. Obtain a Safety Data Sheet (SDS) from the manufacturer to ensure non -toxicity (note however, the SDS may not include ecological information). • Stormwater runoff from PAM treated soils should pass through one of the following sediment control BMP prior to discharging to surface waters. - When the total drainage area is greater than or equal to 5 acres, PAM treated areas should drain to a sediment basin. December 2019 CASQA BMP Handbook 2 of 9 Construction www.casqa.org Agreement No. 6574 Soil °, "Inders EC-5 - Areas less than 5 acres should drain to sediment control BMPs, such as a sediment trap, or a series of check dams. The total number of check dams used should be maximized to achieve the greatest amount of settlement of sediment prior to discharging from the site. Each check dam should be spaced evenly in the drainage channel through which stormwater flows are discharged off site. is Performance of soil binders depends on temperature, humidity, and traffic across treated areas. is Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc. • Some soil binders are designed for application to roads. • Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Selecting a Soil Binder Properties of common soil binders used for erosion control are provided on Table i at the end of this Fact Sheet. Use Table 1 to select an appropriate soil binder. Refer to WE-1, Wind Erosion Control, for dust control soil binders. Factors to consider when selecting a soil binder include the following: is Suitability to situation - Consider where the soil binder will be applied, if it needs a high resistance to leaching or abrasion, and whether it needs to be compatible with any existing vegetation. Determine the length of time soil stabilization will be needed, and if the soil binder will be placed in an area where it will degrade rapidly. In general, slope steepness is not a discriminating factor for the listed soil binders. • Soil types and surface materials - Fines and moisture content are key properties of surface materials. Consider a soil binder's ability to penetrate, likelihood of leaching, and ability to form a surface crust on the surface materials. • Frequency of application - The frequency of application is related to the functional longevity of the binder, which can be affected by subgrade conditions, surface type, climate, and maintenance schedule. m Frequent applications could lead to high costs. Application frequency may be minimized if the soil binder has good penetration, low evaporation, and good longevity. Consider also that frequent application will require frequent equipment clean up. Plant -Material -Based (Short Lived, <6 months) Binders Guar: Guar is a non -toxic, biodegradable, natural galactomannan-based hydrocolloid treated with dispersant agents for easy field mixing. It should be mixed with water at the rate of 11 to 15 lb per 1,000 gallons. Recommended minimum application rates are as follows: December 2019 CASQA BMP Handbook 3 of 9 Construction www.casqa.org Agreement No. 6574 Soil Binders Application Rates for Guar Soil Stabilizer --.... Slope (H:V): 4' Plat_..-........�m.........�....�...�.�.�.�.�.�m.1............_A...�,.� ga aa 2__........._..................................................�i........_............ lb/acre: 40 45.. �...............I ..._____ ..... .. ... ,....�,. 50 60 70 Psvlliuni: Psyllium is composed of the finely ground muciloid coating of plantago seeds that is applied as a dry powder or in a wet slurry to the surface of the soil. It dries to form a firm but rewettable membrane that binds soil particles together but permits germination and growth of seed. Psyllium requires 12 to 18 hours drying time. Application rates should be from 8o to 200 lb/acre, with enough water in solution to allow for a uniform slurry flow. Starch: Starch is non-ionic, cold water soluble (pre -gelatinized) granular cornstarch. The material is mixed with water and applied at the rate of 150 lb/acre. Approximate drying time is 9 to 12 hours. Plant -Material -Based (Long Lived, 6-12 months) Binders Pitch and Rosin Emulsion: Generally, a non-ionic pitch and rosin emulsion has a minimum solids content of 48%. The rosin should be a minimum of 26% of the total solids content. The soil stabilizer should be non -corrosive, water dilutable emulsion that upon application cures to a water insoluble binding and cementing agent. For soil erosion control applications, the emulsion is diluted and should be applied as follows: • For clayey soil: 5 parts water to 1-part emulsion • For sandy soil: io parts water to 1-part emulsion Application can be by water truck or hydraulic seeder with the emulsion and product mixture applied at the rate specified by the manufacturer. Polymeric Emulsion Blend Binders Aci,vlic L)Pob iers and Polymers: Polymeric soil stabilizers should consist of a liquid or solid polymer or copolymer with an acrylic base that contains a minimum of 55% solids. The polymeric compound should be handled and mixed in a manner that will not cause foaming or should contain an anti -foaming agent. The polymeric emulsion should not exceed its shelf life or expiration date; manufacturers should provide the expiration date. Polymeric soil stabilizer should be readily miscible in water, non -injurious to seed or animal life, non-flammable, should provide surface soil stabilization for various soil types without totally inhibiting water infiltration, and should not re -emulsify when cured. The applied compound typically requires 12 to 24 hours drying time. Liquid copolymer should be diluted at a rate of 10 parts water to 1- part polymer and the mixture applied to soil at a rate of 1,175 gallons/acre. Liquid Pol y1l'iem s LMet,hacr lanes and Ar ylatee This material consists of a tackifier/sealer that is a liquid polymer of methacrylates and acrylates. It is an aqueous t00% acrylic emulsion blend Of 40% solids by volume that is free from styrene, acetate, vinyl, ethoxylated surfactants or silicates. For soil stabilization applications, it is diluted with water in accordance with the manufacturer's recommendations and applied with a hydraulic seeder at the rate of 20 gallons/acre. Drying time is 12 to 18 hours after application. December 2019 CASQA BMP Handbook 4 of 9 Construction www.casga.org Agreement No. 6574 Soil Binders EC-5 Q�M-s tof Sodium Acrylates aiid Acrylainides:. These materials are non -toxic, dry powders that are copolymers of sodium acrylate and acrylamide. They are mixed with water and applied to the soil surface for erosion control at rates that are determined by slope gradient: Slope Gradient lb/acre (H:V) Flat to 5:1 ........... . 3.0-5.0 5:1 to 3:1 5.0-10.0 2:1 to 1:1 10.0-20.0 December 2019 CASQA BMP Handbook 5 of 9 Construction www.casqa.org Agreement No. 6574 Soil Bi anders, EC-5 Poi�7-Ac.r�,Iannide PAM antes Coa&.Li-Lt ww 2 A ,1,ill cl(L: Linear copolymer polyacrylamide for use as a soil binder is packaged as a dry flowable solid, as a liquid. Refer to the manufacturer's recommendation for dilution and application rates as they vary based on liquid or dry form, site conditions and climate. r Limitations specific to PAM are as follows. Do not use PAM on a slope that flows into a water body without passing through a sediment trap or sediment basin. The specific PAM copolymer formulation must be anionic. Cationic PAM should not be used in any application because of known aquatic toxicity problems. Only the highest drinking water grade PAM, certified for compliance with ANSI/NSF Standard 6o for drinking water treatment, should be used for soil applications. PAM designated for erosion and sediment control should be "water soluble" or "linear" or "non -cross linked". PAM should not be used as a stand-alone BMP to protect against water -based erosion. When combined with mulch, its effectiveness increases dramatically. Hydro- "olloAd Polymers.: Hydro -Colloid Polymers are various combinations of dry flowable poly-acrylamides, copolymers and hydro -colloid polymers that are mixed with water and applied to the soil surface at rates of 55 to 60 lb/acre. Drying times are o to 4 hours. Cementitious-Based Binders Gypsum: This is a formulated gypsum -based product that readily mixes with water and mulch to form a thin protective crust on the soil surface. It is composed of high purity gypsum that is ground, calcined and processed into calcium sulfate hemihydrate with a minimum purity of 86%. It is mixed in a hydraulic seeder and applied at rates 4,000 to 12,000 lb/acre. Drying time is 4 to 8 hours. Applying Soil Binders After selecting an appropriate soil binder, the untreated soil surface must be prepared before applying the soil binder. The untreated soil surface must contain sufficient moisture to assist the agent in achieving uniform distribution. In general, the following steps should be followed: ■ Follow manufacturer's written recommendations for application rates, pre -wetting of application area, and cleaning of equipment after use. • Prior to application, roughen embankment and fill areas. • Consider the drying time for the selected soil binder and apply with sufficient time before anticipated rainfall. Soil binders should not be applied during or immediately before rainfall. • Avoid over spray onto roads, sidewalks, drainage channels, sound walls, existing vegetation, etc. December 2019 CASQA BMP Handbook 6 of 9 Construction www.casqa.org Agreement No. 6574 • Soil binders should not be applied to frozen soil, areas with standing water, under freezing or rainy conditions, or when the temperature is below 40uF during the curing period. • More than one treatment is often necessary, although the second treatment may be diluted or have a lower application rate. • Generally, soil binders require a minimum curing time of 24 hours before they are fully effective. Refer to manufacturer's instructions for specific cure time. ■ For liquid agents: Crown or slope ground to avoid ponding. Uniformly pre -wet ground at 0.03 to 0.3 gal/yd2 or according to manufacturer's recommendations. Apply solution under pressure. Overlap solution 6 to 12 in. Allow treated area to cure for the time recommended by the manufacturer; typically, at least 24 hours. - Apply second treatment before first treatment becomes ineffective, using 50 application rate. - In low humidities, reactivate chemicals by re -wetting with water at o.1 to 0.2 gal/yd2. Costs Costs vary according to the soil stabilizer selected for implementation. The following are approximate installed costs: .......:.................. :.:........._ Soil Binder ._ Cost per Acre Plant -Material -Based (Short Lived) Binders $900-$2����� _ 1,o0 W Plant -Material -Based (Long Lived)Binders $1,500-$1,900......_, m Polymeric Emulsion Blend Binders $900-$1,900 Cemender ntitiaus-Based Binders ....�.�.�.�....�..�.....�....... $1,00041,500 Source: Cost information received from individual product manufacturers solicited by Geosyntec Consultants (2004). Adjusted for inflation (2016 dollars) by Tetra Tech Inc. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident should be repaired and BMPs re -applied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re -application of BMPs. December 2019 CASQA BMP Handbook 7 of 9 Construction www.casga.org Agreement No. 6574 a Reapply the selected soil binder as needed to maintain effectiveness. Table 1 Properties of Soil Binders for Erosion Control Binder Type Evaluation Criteria Plant Material Plant Material Polymeric Cementitious- Based (Short Based (Long Emulsion Blends Based Binders Lived) Lived) Relative Cost Low Moderate to High Low to High Low to Moderate Resistance to Leaching High High Low to Moderate Moderate Resistance to Abrasion Moderate Low Moderate to High I Moderate to High Longevity Short to Medium Medium Medium to Long Medium Minimum Curing Time 9 to 18 hours 19 to 24 hours 0 to 24 hours 4 to 8 hours before Rain Compatibility with Good Poor ««wawa Poor Poor Existing Vegetation Photodegradable/ Photodegradable/ Mode of Degradation Biodegradable Biodegradable Chemically Chemically Degradable Degradable Labor Intensive No No No No Specialized Application Water Truck or Hydraulic Water Truck or Hydraulic Water Truck or Water Truck or Equipment Mulcher Mulcher Hydraulic Mulcher Hydraulic Mulcher Liquid/Powder Powder Liquid Liquid/Powder Powder Surface Crusting Yes, but dissolves Yes Yes, but dissolves on Yes on rewetting relvetting Clean Up Water Water Water Water Erosion Control Varies Varies Varies (1) 4,000 to 12,000 Application Rate lbs/acre (i) See Implementation for specific rates. December 2019 CASQA BMP Handbook 8 of 9 Construction www.casqa.org Agreement No. 6574 Binders EC-5_ References Erosion Control Pilot Study Report, State of California Department of Transportation (Caltrans), June 2000. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Sedimentation and Erosion Control, An Inventory of Current Practices Draft, US EPA, April 1990. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999• Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 9 of 9 Construction www.casqa.org Agreement No. 6574 Straw Mulch EC-�6 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control Waste Management and WM Materials Pollution Control Legend: Q Primary Category Secondary Category 0 Targeted Constituents Description and Purpose" Sediment Q Straw mulch consists of placing a uniform layer of straw and Nutrients incorporating it into the soil with a studded roller or crimper or Trash anchoring it with a tackifier or stabilizing emulsion. Straw mulch protects the soil surface from the impact of rain drops, Metals preventing soil particles from becoming dislodged. Bacteria Oil and Grease Suitable Applications Organics Straw mulch is suitable for disturbed areas requiring temporary protection until permanent stabilization is established. Straw mulch can be specified for the following applications: Potential Alternatives mp EC-3 Hydraulic Mulch ■ As a stand-alone BMP on disturbed areas until soils can be prepared for permanent vegetation. The longevity of straw EC 4 Hydroseeding mulch is typically less than six months. EC-5 Soil Binders EC-7 Geotextiles and Mats mi Applied in combination with temporary seeding strategies EC-8 Wood Mulching u Applied in combination with permanent seeding strategies EC-14 Compost Blanket to enhance plant establishment and final soil stabilization ... .....-° If User/Subscriber modifies this fact • Applied around containerized plantings to control erosion sheet in any way, the CASQA until the plants become established to provide permanent name/logo and footer below must be stabilization removed from each page and not appear on the modified version. Limitations Availability of straw and straw blowing equipment may be limited just prior to the rainy season and prior to storms due to high demand. e,.wmpwar�,uva.�mwa�m �m,amr December 2019 CASQA BMP Handbook 1 of 4 Construction www.casga.org Agreement No. 6574 Straw • There is a potential for introduction of weed seed and unwanted plant material if weed -free agricultural straw is not specified. • Straw mulch applied by hand is more time intensive and potentially costly. m Wind may limit application of straw and blow straw into undesired locations. May have to be removed prior to permanent seeding or prior to further earthwork. • "Punching" of straw does not work in sandy soils, necessitating the use of tackifiers. ® Potential fugitive dust control issues associated with straw applications can occur. Application of a stabilizing emulsion or a water stream at the same time straw is being blown can reduce this problem. • Use of plastic netting should be avoided in areas where wildlife may be entrapped and may be prohibited for projects in certain areas with sensitive wildlife species, especially reptiles and amphibians. Implementation L Straw should be derived from weed -free wheat, rice, or barley. Where required by the plans, specifications, permits, or environmental documents, native grass straw should be used. ■ Use tackifier to anchor straw mulch to the soil on slopes. • Crimping, punch roller -type rollers, or track walking may also be used to incorporate straw mulch into the soil on slopes. Track walking can be used where other methods are impractical. m Avoid placing straw onto roads, sidewalks, drainage channels, sound walls, existing vegetation, etc. • Straw mulch with tackifier should not be applied during or immediately before rainfall. • Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Application Procedures • When using a tackifier to anchor the straw mulch, roughen embankment or fill areas by rolling with a crimping or punching -type roller or by track walking before placing the straw mulch. Track walking should only be used where rolling is impractical. ■ Apply straw at a rate of between 3,00o and 4,000 lb./acre, either by machine or by hand distribution and provide i00% ground cover. A lighter application is used for flat surfaces and a heavier application is used for slopes. m Evenly distribute straw mulch on the soil surface. w Anchoring straw mulch to the soil surface by "punching" it into the soil mechanically (incorporating) can be used in lieu of a tackifier. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casga.org Agreement No. 6574 Straw Mulch EC-:6 Methods for holding the straw mulch in place depend upon the slope steepness, accessibility, soil conditions, and longevity. - A tackifier acts to glue the straw fibers together and to the soil surface. The tackifier should be selected based on longevity and ability to hold the fibers in place. A tackifier is typically applied at a rate of 125 lb./acre. In windy conditions, the rates are typically 18o lb./acre. - On very small areas, a spade or shovel can be used to punch in straw mulch. - On slopes with soils that are stable enough and of sufficient gradient to safely support construction equipment without contributing to compaction and instability problems, straw can be "punched" into the ground using a knife blade roller or a straight bladed coulter, known commercially as a "crimper." Costs Average annual cost for installation and maintenance is included in the table below. Application by hand is more time intensive and potentially more costly. BMP I Unit Cost per Acre Straw mulch, crimped or punched $3,150-$6,900 Straw mulch with tackifier $2,300-$6,200 Source: Cost information received from individual product suppliers solicited by Geosyntec Consultants (2004). Adjusted for inflation (2016 dollars) by Tetra Tech, Inc. Inspection and Maintenance a BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident should be repaired and BMPs re -applied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re -application of BMPs. • The key consideration in inspection and maintenance is that the straw needs to last long enough to achieve erosion control objectives. Straw mulch as a stand-alone BMP is temporary and is not suited for long-term erosion control. ■ Maintain an unbroken, temporary mulched ground cover while disturbed soil areas are inactive. Repair any damaged ground cover and re -mulch exposed areas. • Reapplication of straw mulch and tackifier may be required to maintain effective soil stabilization over disturbed areas and slopes. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 Straw Mulch ,, References Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. Controlling Erosion of Construction Sites, Agricultural Information Bulletin #347, U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) (formerly Soil Conservation Service — SCS). Guides for Erosion and Sediment Control in California, USDA Soils Conservation Service, January 1991. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Soil Erosion by Water, Agricultural Information Bulletin #513, U.S. Department of Agriculture, Soil Conservation Service. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 and Mats EC-i7 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category 0 Secondary Category a ❑x Targeted Constituents Description and Purpose Sediment Q Rolled Erosion Control Products (RECPs), also known as Nutrients erosion control matting or blankets, can be made of natural or Trash synthetic materials or a combination of the two. RECPs are used to cover the soil surface to reduce erosion from rainfall Metals impact, hold soil in place, and absorb and hold moisture near Bacteria the soil surface. Additionally, RECPs may be used to stabilize Oil and Grease soils until vegetation is established or to reinforce non -woody Organics surface vegetation. Suitable Applications Alternatives Potential Alt ies RECPs are typically applied on slopes where erosion hazard is EC-3 Hydraulic Mulch high, and vegetation will be slow to establish. Mattings are also EC-4 Hydroseeding used on stream banks, swales and other drainage channels where moving water at velocities between ft s and 6 ft s are g 3 / / _ if User/Subscriber modifies this fact likely to cause scour and wash out new vegetation and in areas sheet in any way, the CASQA where the soil surface is disturbed and where existing name/logo and footer below must be vegetation has been removed. RECPs may also be used when removed from each page and not seeding cannot occur (e.g., late season construction and/or the appear on the modified version. arrival of an early rain season). RECPs should be considered when the soils are fine grained and potentially erosive. RECPs should be considered in the following situations: • Steep slopes, generally steeper than 3:1(H:V). ■ Long slopes. r Slopes where the erosion potential is high. • Slopes and disturbed soils where mulch must be anchored. December 2019 CASQA BMP Handbook 1 of 12 Construction www.casqa.org Agreement No. 6574 Geotextilesi and Mats EC-7_, • Disturbed areas where temporary cover is needed, or plants are slow to establish or will not establish. • Channels with flows exceeding 3.3 ft/s. • Channels to be vegetated. ■ Stockpiles. ■ Slopes adjacent to water bodies. Limitations RECP installed costs are generally higher than other erosion control BMPs, limiting their use to areas where other BMPs are ineffective (e.g., channels, steep slopes). ■ RECPs may delay seed germination, due to reduction in soil temperature and/or sunlight. a RECPs are generally not suitable for excessively rocky sites or areas where the final vegetation will be mowed (since staples and netting can catch in mowers). If a staple or pin cannot be driven into the soil because the underlying soil is too hard or rocky, then an alternative BMP should be selected. ■ If used for temporary erosion control, RECPs should be removed and disposed of prior to application of permanent soil stabilization measures. The use of plastic sheeting should be limited to covering stockpiles or very small graded areas for short periods of time (such as through one imminent storm event) until other measures, such as seeding and mulching, maybe installed. - Plastic sheeting is easily vandalized, easily torn, photodegradable, and must be disposed of at a landfill. - Plastic sheeting results in t00% runoff, which may cause serious erosion problems in the areas receiving the increased flow. m According to the State Water Board's CGP Review, Issue #2, only RECPs that either do not contain plastic netting or contain netting manufactured from i00% biodegradable non - plastic materials, such as jute, sisal, or coir fiber should be used due to plastic pollution and wildlife concerns. If a plastic -netted product is used for temporary stabilization, it must be promptly removed when no longer needed and removed or replaced with non -plastic netted RECPs for final stabilization. • RECPs may have limitations based on soil type, slope gradient, or channel flow rate; consult the manufacturer for proper selection. • Not suitable for areas that have foot traffic (tripping hazard) - e.g., pad areas around buildings under construction. • RECPs that incorporate a plastic netting (e.g. straw blanket typically uses a plastic netting to hold the straw in place) may not be suitable near known wildlife habitat. Wildlife can become trapped in the plastic netting. As per State Water Board guidance, RECPs that December 2019 CASQA BMP Handbook 2 of 12 Construction www.casga.org Agreement No. 6574 Geotextilesi Diu contain plastic netting are discouraged for temporary controls and are not acceptable alternatives for permanent controls. RECPs that do not contain plastic netting or contain netting manufactured from t00% biodegradable non -plastic materials such as jute, sisal, or coir fiber should be used. 6 RECPs may have limitations in extremely windy climates; they are susceptible to wind damage and displacement. However, when RECPs are properly trenched at the top and bottom and stapled in accordance with the manufacturer's recommendations, problems with wind can be minimized. Implementation Material Selection Natural RECPs have been found to be effective where re -vegetation will be provided by re- seeding. The choice of material should be based on the size of area, side slopes, surface conditions such as hardness, moisture, weed growth, and availability of materials. Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. a The following natural and synthetic RECPs are commonly used: Geotextiles w Material can be a woven or a non -woven polypropylene fabric with minimum thickness of 0.O6 in., minimum width of 12 ft and should have minimum tensile strength of 150 lbs (warp), 80 lbs (fill) in conformance with the requirements in ASTM Designation: D 4632. The permittivity of the fabric should be approximately O.07 sec-' in conformance with the requirements in ASTM Designation: D4491. The fabric should have an ultraviolet (UV) stability of 70 percent in conformance with the requirements in ASTM designation: D4355• Geotextile blankets must be secured in place with wire staples or sandbags and by keying into tops of slopes to prevent infiltration of surface waters under geotextile. Staples should be made of minimum 11-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. Geotextiles may be reused if they are suitable for the use intended. Plastic Covers ■ Generally plastic sheeting should only be used as stockpile covering or for very small graded areas for short periods of time (such as through one imminent storm event). If plastic sheeting must be used, choose a plastic that will withstand photo degradation. Plastic sheeting should have a minimum thickness of 6 mils and must be keyed in at the top of slope (when used as a temporary slope protection) and firmly held in place with sandbags or other weights placed no more than 10 ft apart. Seams are typically taped or weighted down their entire length, and there should be at least a 12 in. to 24 in. overlap of all seams. Edges should be embedded a minimum of 6 in. in soil (when used as a temporary slope protection). All sheeting must be inspected periodically after installation and after significant rainstorms to check for erosion, undermining, and anchorage failure. Any failures must be repaired December 2019 CASQA BMP Handbook 3 of 12 Construction www.casqa.org Agreement No. 6574 and Mats EC-7_ immediately. If washout or breakages occur, the material should be re -installed after repairing the damage to the slope. Erosion Control Blankets/Mats a Biodegradable RECPs are typically composed of jute fibers, curled wood fibers, straw, coconut fiber, or a combination of these materials. In order for an RECP to be considered l00% biodegradable, the netting, sewing or adhesive system that holds the biodegradable mulch fibers together must also be biodegradable. See typical installation details at the end of this fact sheet. Jute is a natural fiber that is made into a yarn that is loosely woven into a biodegradable mesh. The performance of jute as a stand-alone RECP is low. Most other RECPs outperform jute as a temporary erosion control product and therefore jute is not commonly used. It is designed to be used in conjunction with vegetation. The material is supplied in rolled strips, which should be secured to the soil with U-shaped staples or stakes in accordance with manufacturers' recommendations. Excelsior (curled wood fiber) blanket material should consist of machine produced mats of curled wood excelsior with 8o percent of the fiber 6 in. or longer. The excelsior blanket should be of consistent thickness. The wood fiber must be evenly distributed over the entire area of the blanket. The top surface of the blanket should be covered with a photodegradable extruded plastic mesh. The blanket should be smolder resistant without the use of chemical additives and should be non -toxic and non -injurious to plant and animal life. Excelsior blankets should be furnished in rolled strips, a minimum of 48 in. wide, and should have an average weight of o.8 lb/yd2, ±10 percent, at the time of manufacture. Excelsior blankets must be secured in place with wire staples. Staples should be made of minimum 11-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. Straw blanket should be machine produced mats of straw with a lightweight biodegradable netting top layer. The straw should be attached to the netting with biodegradable thread or glue strips. The straw blanket should be of consistent thickness. The straw should be evenly distributed over the entire area of the blanket. Straw blanket should be furnished in rolled strips a minimum of 6.5 ft wide, a minimum of 8o ft long and a minimum of 0.5 lb/yd2. Straw blankets must be secured in place with wire staples. Staples should be made of minimum 11-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. - Wood fiber blanket is composed of biodegradable fiber mulch with extruded plastic netting held together with adhesives. The material is designed to enhance re -vegetation. The material is furnished in rolled strips, which must be secured to the ground with U- shaped staples or stakes in accordance with manufacturers' recommendations. Coconut fiber blanket should be a machine produced mat of too percent coconut fiber with biodegradable netting on the top and bottom. The coconut fiber should be attached to the netting with biodegradable thread or glue strips. The coconut fiber blanket should be of consistent thickness. The coconut fiber should be evenly distributed over the entire area of the blanket. Coconut fiber blanket should be furnished in rolled strips with a minimum of 6.5 ft wide, a minimum of 8o ft. long and a minimum of 0.5 IN December 2019 CASQA BMP Handbook 4 of 12 Construction www.casqa.org Agreement No. 6574 Geotextiles and Mats EC-7 lb/yd2. Coconut fiber blankets must be secured in place with wire staples. Staples should be made of minimum 1i-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. - Coconut fiber mesh is a thin permeable membrane made from coconut or corn fiber that is spun into a yarn and woven into a biodegradable mat. It is designed to be used in conjunction with vegetation and typically has longevity of several years. The material is supplied in rolled strips, which must be secured to the soil with U-shaped staples or stakes in accordance with manufacturers' recommendations. Straw coconut fiber blanket should be machine produced mats of 70 percent straw and 30 percent coconut fiber with a biodegradable netting top layer and a biodegradable bottom net. The straw and coconut fiber should be attached to the netting with biodegradable thread or glue strips. The straw coconut fiber blanket should be of consistent thickness. The straw and coconut fiber should be evenly distributed over the entire area of the blanket. Straw coconut fiber blanket should be furnished in rolled strips a minimum of 6.5 ft wide, a minimum of 8o ft long and a minimum of 0.5 lb/yd2. Straw coconut fiber blankets must be secured in place with wire staples. Staples should be made of minimum 11-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. Non -biodegradable RECPs are typically composed of polypropylene, polyethylene, nylon or other synthetic fibers. In some cases, a combination of biodegradable and synthetic fibers is used to construct the REM Netting used to hold these fibers together is typically non - biodegradable as well. Only biodegradable RECPs can remain on a site applying for a Notice of Termination due to plastic pollution and wild life concerns (State Waterboard, 2016). RECPs containing plastic that are used on a site must be disposed of for final stabilization. - Plastic netting is a lightweight biaxially oriented netting designed for securing loose mulches like straw or paper to soil surfaces to establish vegetation. The netting is photodegradable. The netting is supplied in rolled strips, which must be secured with U- shaped staples or stakes in accordance with manufacturers' recommendations. - Plastic mesh is an open weave geotextile that is composed of an extruded synthetic fiber woven into a mesh with an opening size of less than 1/4 in. It is used with re - vegetation or may be used to secure loose fiber such as straw to the ground. The material is supplied in rolled strips, which must be secured to the soil with U-shaped staples or stakes in accordance with manufacturers' recommendations. Synthetic fiber with netting is a mat that is composed of durable synthetic fibers treated to resist chemicals and ultraviolet light. The mat is a dense, three-dimensional mesh of synthetic (typically polyolefin) fibers stitched between two polypropylene nets. The mats are designed to be re -vegetated and provide a permanent composite system of soil, roots, and geomatrix. The material is furnished in rolled strips, which must be secured with U-shaped staples or stakes in accordance with manufacturers' recommendations. - Bonded synthetic fibers consist of a three-dimensional geometric nylon (or other synthetic) matting. Typically, it has more than go percent open area, which facilitates December 2019 CASQA BMP Handbook 5 of 12 Construction www.casga.org Agreement No. 6574 Geotextiles and Mats EC-7 root growth. It's tough root reinforcing system anchors vegetation and protects against hydraulic lift and shear forces created by high volume discharges. It can be installed over prepared soil, followed by seeding into the mat. Once vegetated, it becomes an invisible composite system of soil, roots, and geomatrix. The material is furnished in rolled strips that must be secured with U-shaped staples or stakes in accordance with manufacturers' recommendations. Combination synthetic and biodegradable RECPs consist of biodegradable fibers, such as wood fiber or coconut fiber, with a heavy polypropylene net stitched to the top and a high strength continuous filament geomatrix or net stitched to the bottom. The material is designed to enhance re -vegetation. The material is furnished in rolled strips, which must be secured with U-shaped staples or stakes in accordance with manufacturers' recommendations. Site Preparation ■ Proper soil preparation is essential to ensure complete contact of the RECP with the soil. Soil Roughening is not recommended in areas where RECPs will be installed. • Grade and shape the area of installation. • Remove all rocks, clods, vegetation or other obstructions so that the installed blankets or mats will have complete, direct contact with the soil. • Prepare seedbed by loosening 2 to 3 in. of topsoil. Seeding/Planting Seed the area before blanket installation for erosion control and re -vegetation. Seeding after mat installation is often specified for turf reinforcement application. When seeding prior to blanket installation, all areas disturbed during blanket installation must be re -seeded. Where soil filling is specified for turf reinforcement mats (TRMs), seed the matting and the entire disturbed area after installation and prior to filling the mat with soil. Fertilize and seed in accordance with seeding specifications or other types of landscaping plans. The protective matting can be laid over areas where grass has been planted and the seedlings have emerged. Where vines or other ground covers are to be planted, lay the protective matting first and then plant through matting according to design of planting. Check Slots Check slots shall be installed as required by the manufacturer. Laying and Securing Matting • Before laying the matting, all check slots should be installed and the seedbed should be friable, made free from clods, rocks, and roots. The surface should be compacted and finished according to the requirements of the manufacturer's recommendations. • Mechanical or manual lay down equipment should be capable of handling full rolls of fabric and laying the fabric smoothly without wrinkles or folds. The equipment should meet the fabric manufacturer's recommendations or equivalent standards. December 2019 CASQA BMP Handbook 6 of 12 Construction www.casqa.org Agreement No. 6574 Geotextiles a�nd Mats EC-7 Anchoring U-shaped wire staples, metal geotextile stake pins, or triangular wooden stakes can be used to anchor mats and blankets to the ground surface. Wire staples should be made of minimum 11-gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown. ra Metal stake pins should be o.188 in. diameter steel with a 1.5 in. steel washer at the head of the pin, and 8 in. in length. m Wire staples and metal stakes should be driven flush to the soil surface. Installation on Slopes Installation should be in accordance with the manufacturer's recommendations. In general, these will be as follows: • Begin at the top of the slope and anchor the blanket in a 6 in. deep by 6 in. wide trench. Backfill trench and tamp earth firmly. ■ Unroll blanket down slope in the direction of water flow. ® Overlap the edges of adjacent parallel rolls 2 to 3 in. and staple every 3 ft (or greater, per manufacturer's specifications). • When blankets must be spliced, place blankets end over end (shingle style) with 6 in. overlap. Staple through overlapped area, approximately 12 in. apart. ■ Lay blankets loosely and maintain direct contact with the soil. Do not stretch. ■ Staple blankets sufficiently to anchor blanket and maintain contact with the soil. Staples should be placed down the center and staggered with the staples placed along the edges. Steep slopes, 1:1 (H:V) to 2:1 (HY), require a minimum of 2 staples/yd2. Moderate slopes, 2:1(H:V) to 3:1(H:V), require a minimum of 11/2 staples/yd2. Check manufacturer's specifications to determine if a higher density staple pattern is required. Installation in Channels Installation should be in accordance with the manufacturer's recommendations. In general, these will be as follows: w Dig initial anchor trench 12 in. deep and 6 in. wide across the channel at the lower end of the project area. Excavate intermittent check slots, 6 in. deep and 6 in. wide across the channel at 25 to 30 ft intervals along the channels. a Cut longitudinal channel anchor trenches 4 in. deep and 4 in. wide along each side of the installation to bury edges of matting, whenever possible extend matting 2 to 3 in. above the crest of the channel side slopes. December 2019 CASQA BMP Handbook 7 of 12 Construction www.casqa.org Agreement No. 6574 Geotext"llesn - Beginning at the downstream end and in the center of the channel, place the initial end of the first roll in the anchor trench and secure with fastening devices at 12 in. intervals. Note: matting will initially be upside down in anchor trench. In the same manner, position adjacent rolls in anchor trench, overlapping the preceding roll a minimum of 3 in. • Secure these initial ends of mats with anchors at 12 in. intervals, backfill and compact soil. • Unroll center strip of matting upstream. Stop at next check slot or terminal anchor trench. Unroll adjacent mats upstream in similar fashion, maintaining a 3 in. overlap. IN Fold and secure all rolls of matting snugly into all transverse check slots. Lay mat in the bottom of the slot then fold back against itself. Anchor through both layers of mat at 12 in. intervals, then backfill and compact soil. Continue rolling all mat widths upstream to the next check slot or terminal anchor trench. IN Alternate method for non -critical installations: Place two rows of anchors on 6 in. centers at 25 to 30 ft. intervals in lieu of excavated check slots. Staple shingled lap spliced ends a minimum of 12 in. apart on 12 in. intervals. IN Place edges of outside mats in previously excavated longitudinal slots; anchor using prescribed staple pattern, backfill, and compact soil. IN Anchor, fill, and compact upstream end of mat in a 12 in. by 6 in. terminal trench. • Secure mat to ground surface using U-shaped wire staples, geotextile pins, or wooden stakes. • Seed and fill turf reinforcement matting with soil, if specified. Soil Filling (if specified for turf reinforcement mat (TRM)) Installation should be in accordance with the manufacturer's recommendations. Typical installation guidelines are as follows: • After seeding, spread and lightly rake 1/2-3/4 inches of fine topsoil into the TRM apertures to completely fill TRM thickness. Use backside of rake or other flat implement. • Alternatively, if allowed by product specifications, spread topsoil using lightweight loader, backhoe, or other power equipment. Avoid sharp turns with equipment. • Always consult the manufacturer's recommendations for installation. IN Do not drive tracked or heavy equipment over mat. a Avoid any traffic over matting if loose or wet soil conditions exist. IN Use shovels, rakes, or brooms for fine grading and touch up. a Smooth out soil filling just exposing top netting of mat. December 2019 CASQA BMP Handbook 8 of 12 Construction www.casga.org Agreement No. 6574 oand Mats Temporary Soil Stabilization Removal V Temporary soil stabilization removed from the site of the work must be disposed of if necessary. Costs Installed costs can be relatively high compared to other BMPs. Approximate costs for installed materials are shown below: _........_Rolled Erosion ..... . Control Products ...........�..� Installed Cost per Acre Jute Mesh .. ........................ $7,700-$9,000 Curled WoodFiber $10,200-$13,400 Straw $10,200-$13,400 _..........._.. Biodegradable _...�................................� ... Wood Fiber $10,200-$13,400 Coconut Fiber $16,600-$i8,00 0 ...................... .......�............ Coconut Fiber Mesh $38,400-$42,200 Straw Coconut Fiber $12,800-$15,400 Plastic Netting .................... $2,6o0-$2,800 .................. Plastic Mesh $3,800-$4,500 _......... ......... — Non -Biodegradable ......................... _..... ... Synthetic Fiber with Netting $43,500-$51,200 Bonded Synthetic Fibers $57,600-$70,400 ........ Combination with B i o d e radable g $38 400-$461o0............ Source: Cost information _ received from individual product manufacturers solicited by Geosyntec Consultants (2004). Adjusted for inflation (2o16 dollars) by Tetra Tech, Inc. Inspection and Maintenance • RECPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident shall be repaired and BMPs reapplied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require reapplication of BMPs. is If washout or breakage occurs, re -install the material after repairing the damage to the slope or channel. • Make sure matting is uniformly in contact with the soil. • Check that all the lap joints are secure. • Check that staples are flush with the ground. December 2019 CASQA BMP Handbook 9 of 12 Construction www.casga.org Agreement No. 6574 Geotext"Iles and Mats EC-7 References CGP Review #2, State Water Resources Control Board, 2014. Available online at: jjffp� N�"vw.vyLteiLL)c)ards.ci,&ov -'p revie L w issueg.pdf. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005 Erosion Control Pilot Study Report, State of California Department of Transportation (Caltrans), June 2000. Guides for Erosion and Sediment Controls in California, USDA Soils Conservation Service, January 1991. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for The Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 10 of 12 Construction www.casqa.org Agreement No. 6574 Geotextiles and Mats 1: C- 7 N 0 F E,,S. 1 Slope surface shaH be free A rocks, clod% SAKS and gross. Mah/Uankek shall have good soil contract. 1 PAY W, —i kmosey and sJok(- or st.ople to ri-ioiniain with the s&K Do not sketch 3 WoH per TmnuQcAxe&s rewynnnenNAWs V December 2019 CASQA BMP Handbook 11 of 12 Construction www.casqa.org Agreement No. 6574 Geotextiles and Mat�s EC-7 . . ........ . ..... . v N. ;'V X December 2019 CASQA BMP Handbook 12 of 12 Construction www.casqa.org Agreement No. 6574 Woiod Mulching EC-8 Description and Purpose Wood mulching consists of applying a mixture of shredded wood mulch or bark to disturbed soils. The primary function of wood mulching is to reduce erosion by protecting bare soil from rainfall impact, increasing infiltration, and reducing runoff. Suitable Applications Wood mulching is suitable for disturbed soil areas requiring temporary protection until permanent stabilization is established. Wood mulch may also be used for final stabilization; generally, used in a landscape setting or areas that will have pedestrian traffic. Limitations aaw Best suited to flat areas or gentle slopes or 5:1(H:V) or flatter. Not suitable for use on slopes steeper than 3:1 (HY). For slopes steeper than 3:1, consider the use of Compost Blankets (EC-14). n Wood mulch may introduce unwanted species if it contains seed, although it may also be used to prevent weed growth if it is seed -free. Not suitable for areas exposed to concentrated flows. If used for temporary stabilization, wood mulch may need to be removed prior to further earthwork. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Lege^.a....... 2 Primary Objective ❑x Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics 0 Potential Alternatives EC-3 Hydraulic Mulch��.,..,,��.��..�.,. EC-4 Hydroseeding EC-5 Soil Binders EC-6 Straw Mulch EC-7 Geotextiles and Mats If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version, December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 Wood Mulching 8; Implementation Mulch Selection There are many types of mulches. Selection of the appropriate type of mulch should be based on the type of application, site conditions, and compatibility with planned or future uses. Application Procedures Prior to application, after existing vegetation has been removed, roughen embankment and fill areas by rolling with a device such as a punching type roller or by track walking. The construction application procedures for mulches vary significantly depending upon the type of mulching method specified. Two methods are highlighted here: 81 Green Material: This type of mulch is produced by the recycling of vegetation trimmings such as grass, shredded shrubs, and trees. Chipped brush from on -site vegetation clearing activities may be used (this may require stockpiling and reapplying after earthwork is complete). Methods of application are generally by hand although pneumatic methods are available. - Green material can be used as a temporary ground cover with or without seeding. - The green material should be evenly distributed on site to a depth of not more than 2 in. ww Shredded Wood: Suitable for ground cover in ornamental or revegetated plantings. - Shredded wood/bark is conditionally suitable. See note under limitations. - Distribute by hand or use pneumatic methods. - Evenly distribute the mulch across the soil surface to a depth of 2 to 3 in. a: Avoid mulch placement onto roads, sidewalks, drainage channels, existing vegetation, etc. Costs Assuming a 2-in. layer of wholesale landscaping -grade wood mulch, the average one-time cost for installation may range from $15,000 — $23,000 per acre'. Costs can increase if the source is not close to the project site. Inspection and Maintenance wa Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. m Areas where erosion is evident shall be repaired and BMPs reapplied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require reapplication of BMPs. Costs based on estimates provided by the California Department of Transportation's Soil Stabilization BMP Research for Erosion and Sediment Controls Cost Survey Technical Memorandum, CTSW-TM-07.172.„ ),1, July 2007 (available at: 111v1`115TM .t 4,c a aa," k:ral �p l tti➢a� imp _ 54. � �1Na,41,1N11�.i1�h nT2 f � �1� : 1 �1.�1igVr� _a1 e1 -1 �.:t k .laa Q and adjusted for inflation from 1997 to 2016. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casga.org Agreement No. 6574 Wood Mulching ;w88 • Regardless of the mulching technique selected, the key consideration in inspection and maintenance is that the mulch needs to last long enough to achieve erosion control objectives. If the mulch is applied as a stand-alone erosion control method over disturbed areas (without seed), it should last the length of time the site will remain barren or until final re -grading and revegetation. • Where vegetation is not the ultimate cover, such as ornamental and landscape applications of bark or wood chips, inspection and maintenance should focus on longevity and integrity of the mulch. • Reapply mulch when bare earth becomes visible. References Controlling Erosion of Construction Sites Agriculture Information Bulletin #347, U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) (formerly Soil Conservation Service — SCS). Guides for Erosion and Sediment Control in California, USDA Soils Conservation Service, January 1991. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992. Sedimentation and Erosion Control, An Inventory of Current Practices Draft, U.S. EPA, April 1990. Soil Erosion by Water Agricultural Information Bulletin #513, U.S. Department of Agriculture, Soil Conservation Service. Soil Stabilization BMP Research for Erosion and Sediment Controls Cost Survey Technical Memorandum, CTSW-TM-07-172.35.1, California Department of Transportation (Caltrans), July 2007. Available online at: Imp: //ww­wdot.ca.g/llq ,&iLi a-ch 1 lit c), Jgl iidg ce e timatingL&A SLabilization P ricin . df. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Description and Purpose An earth dike is a temporary berm or ridge of compacted soil used to divert runoff or channel water to a desired location. A drainage swale is a shaped and sloped depression in the soil surface used to convey runoff to a desired location. Earth dikes and drainage swales are used to divert off site runoff around the construction site, divert runoff from stabilized areas and disturbed areas, and direct runoff into sediment basins or traps. Suitable Applications Earth dikes and drainage swales are suitable for use, individually or together, where runoff needs to be diverted from one area and conveyed to another. Earth dikes and drainage swales may be used: To convey surface runoff down sloping land To intercept and divert runoff to avoid sheet flow over sloped surfaces - To divert and direct runoff towards a stabilized watercourse, drainage pipe or channel - To intercept runoff from paved surfaces - To intercept and divert run-on - Below steep grades where runoff begins to concentrate Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 2 Primary Objective ❑x Secondary Objective Targeted Constituents w —11...'�'',.. ''­ . �................ Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version, f.-.A07 q;'V N Vk^ T U:AFM11.��UITTR December 2019 CASQA BMP Handbook 1 of 7 Construction www.casga.org Agreement No. 6574 DikesEarth 11111111 Along roadways and facility improvements subject to flood drainage - At the top of slopes to divert runon from adjacent or undisturbed slopes - At bottom and mid slope locations to intercept sheet flow and convey concentrated flows - Divert sediment laden runoff into sediment basins or traps Limitations Dikes should not be used for drainage areas greater than io acres or along slopes greater than io percent. For larger areas more permanent drainage structures should be built. All drainage structures should be built in compliance with local municipal requirements. • Earth dikes may create more disturbed area on site and become barriers to construction equipment. • Earth dikes must be stabilized immediately, which adds cost and maintenance concerns. • Diverted stormwater may cause downstream flood damage. • Dikes should not be constructed of soils that may be easily eroded. a Regrading the site to remove the dike may add additional cost. a Temporary drains and swales or any other diversion of runoff should not adversely impact upstream or downstream properties. • Temporary drains and swales must conform to local floodplain management requirements, • Earth dikes/drainage swales are not suitable as sediment trapping devices. w It may be necessary to use other soil stabilization and sediment controls such as check dams, plastics, and blankets, to prevent scour and erosion in newly graded dikes, swales, and ditches. • Sediment accumulation, scour depressions, and/or persistent non-stormwater discharges can result in areas of standing water suitable for mosquito production in drainage swales. Implementation The temporary earth dike is a berm or ridge of compacted soil, located in such a manner as to divert stormwater to a sediment trapping device or a stabilized outlet, thereby reducing the potential for erosion and offsite sedimentation. Earth dikes can also be used to divert runoff from off site and from undisturbed areas away from disturbed areas and to divert sheet flows away from unprotected slopes. An earth dike does not itself control erosion or remove sediment from runoff. A dike prevents erosion by directing runoff to an erosion control device such as a sediment trap or directing runoff away from an erodible area. Temporary diversion dikes should not adversely impact adjacent properties and must conform to local floodplain management regulations and should not be used in areas with slopes steeper than 1o%. December 2019 CASQA BMP Handbook 2 of 7 Construction www.casqa.org Agreement No. 6574 Slopes that are formed during cut and fill operations should be protected from erosion by runoff. A combination of a temporary drainage swale and an earth dike at the top of a slope can divert runoff to a location where it can be brought to the bottom of the slope (see EC-11, Slope Drains). A combination dike and swale is easily constructed by a single pass of a bulldozer or grader and compacted by a second pass of the tracks or wheels over the ridge. Diversion structures should be installed when the site is initially graded and remain in place until post construction BMPs are installed and the slopes are stabilized. Diversion practices concentrate surface runoff, increasing its velocity and erosive force. Thus, the flow out of the drain or swale must be directed onto a stabilized area or into a grade stabilization structure. If significant erosion will occur, a swale should be stabilized using vegetation, chemical treatment, rock rip -rap, matting, or other physical means of stabilization. Any drain or swale that conveys sediment laden runoff must be diverted into a sediment basin or trap before it is discharged from the site. General ■ Care must be applied to correctly size and locate earth dikes, drainage swales. Excessively steep, unlined dikes, and swales are subject to erosion and gully formation. • Conveyances should be stabilized. ■ Use a lined ditch for high flow velocities. s Select flow velocity based on careful evaluation of the risks due to erosion of the measure, soil types, overtopping, flow backups, washout, and drainage flow patterns for each project site. • Compact any fills to prevent unequal settlement. • Do not divert runoff onto other property without securing written authorization from the property owner. • When possible, install and utilize permanent dikes, swales, and ditches early in the construction process. • Provide stabilized outlets. Earth Dikes Temporary earth dikes are a practical, inexpensive BMP used to divert stormwater runoff. Temporary diversion dikes should be installed in the following manner: m All dikes should be compacted by earth moving equipment. w All dikes should have positive drainage to an outlet. All dikes should have 2:1 or flatter side slopes, 18 in. minimum height, and a minimum top width of 24 in. Wide top widths and flat slopes are usually needed at crossings for construction traffic. December 2019 CASQA BMP Handbook 3 of 7 Construction www.casqa.org Agreement No. 6574 Earth Dolkes and Drainage Sw,ales EC-9 May be covered with hydro mulch, hydroseed, wood mulch, compost blanket, or RECP for stabilization. a The outlet from the earth dike must function with a minimum of erosion. Runoff should be conveyed to a sediment trapping device such as a Sediment Trap (SE-3) or Sediment Basin (SE-2) when either the dike channel or the drainage area above the dike are not adequately stabilized. Temporary stabilization may be achieved using seed and mulching for slopes less than 5% and either rip -rap or sod for slopes in excess of 5%. In either case, stabilization of the earth dike should be completed immediately after construction or prior to the first rain. u If riprap is used to stabilize the channel formed along the toe of the dike, the following typical specifications apply: - Channel Grade Riprap Stabilization ...................... o. 1.0% www ..�................... 4 in. Rock 1.1-2.0% _.... mm 6 in. Rock _................._2.i-4mo/ .......... 8 in. Rock ... .._._........... .__ 4.15.0% ......... 8 in. -12 in. Riprap m The stone riprap, recycled concrete, etc. used for stabilization should be pressed into the soil with construction equipment. Filter cloth may be used to cover dikes in use for long periods. Construction activity on the earth dike should be kept to a minimum. Drainage Swales Drainage swales are only effective if they are properly installed. Swales are more effective than dikes because they tend to be more stable. The combination of a swale with a dike on the downhill side is the most cost-effective diversion. Standard engineering design criteria for small open channel and closed conveyance systems should be used (see the local drainage design manual). Unless local drainage design criteria state otherwise, drainage swales should be designed as follows: No more than 5 acres may drain to a temporary drainage swale. w, Place drainage swales above or below, not on, a cut or fill slope. • Swale bottom width should be at least 2 ft. • Depth of the swale should be at least 18 in. • Side slopes should be 2:1 or flatter. • Drainage or swales should be laid at a grade of at least 1 %, but not more than 15 %. December 2019 CASQA BMP Handbook 4 of 7 Construction www.casqa.org Agreement No. 6574 Earth Dikes and Drainage • The swale must not be overtopped by the peak discharge from a 10-year storm, irrespective of the design criteria stated above. • Remove all trees, stumps, obstructions, and other objectionable material from the swale when it is built. • Compact any fill material along the path of the swale. s Stabilize all swales immediately. Seed and mulch swales at a slope of less than 5 % and use rip -rap or sod for swales with a slope between 5 and 15 %. For temporary swales, geotextiles and mats (EC-7) may provide immediate stabilization. m Irrigation may be required to establish sufficient vegetation to prevent erosion. ■ Do not operate construction vehicles across a swale unless a stabilized crossing is provided. ® Permanent drainage facilities must be designed by a professional engineer (see the local drainage design criteria for proper design). • At a minimum, the drainage swale should conform to predevelopment drainage patterns and capacities. • Construct the drainage swale with a positive grade to a stabilized outlet. • Provide erosion protection or energy dissipation measures if the flow out of the drainage swale can reach an erosive velocity. Costs • Cost ranges from $19 to $70 per ft. for both earthwork and stabilization and depends on availability of material, site location, and access (Adjusted for inflation (2016 dollars) by Tetra Tech, Inc.). w Small dikes: $3 - $8/linear ft.; Large dikes: $3/yd3 (Adjusted for inflation (2016 dollars) by Tetra Tech, Inc.). • The cost of a drainage swale increases with drainage area and slope. Typical swales for controlling internal erosion are inexpensive, as they are quickly formed during routine earthwork. Inspection and Maintenance • Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two -week intervals during the non -rainy season. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Inspect ditches and berms for washouts. Replace lost riprap, damaged linings or soil stabilizers as needed. December 2019 CASQA BMP Handbook 5 of 7 Construction www.casqa.org Agreement No. 6574 DikesEarth • Inspect channel linings, embankments, and beds of ditches and berms for erosion and accumulation of debris and sediment. Remove debris and sediment and repair linings and embankments as needed. • Temporary conveyances should be completely removed as soon as the surrounding drainage area has been stabilized or at the completion of construction References Erosion and Sediment Control Handbook, S.J. Goldman, K. Jackson, T.A. Bursetynsky, P.E., McGraw Hill Book Company, 1986. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Metzger, M.E. 2004. Managing mosquitoes in stormwater treatment devices. University of California Division of Agriculture and Natural Resources, Publication 8125. On-line: http:// anreatalog.ucdavis.edu/pdf/8125.pdf National Association of Home Builders (NAHB). Stormwater Runoff & Nonpoint Source Pollution Control Guide for Builders and Developers. National Association of Home Builders, Washington, D.C., 1995 National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Southeastern Wisconsin Regional Planning Commission (SWRPC). Costs of Urban Nonpoint Source Water Pollution Control Measures. Technical Report No. 31. Southeastern Wisconsin Regional Planning Commission, Waukesha, WI. 1991 Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 6 of 7 Construction www.casqa.org Agreement No. 6574 v. .......... N O f > ` S�(-,,blllze card slo,,.)cs y Properly cornpoct the subgrode, . . .... ...... . . . . .... .. . i- December 2019 CASQA BIMP Handbook 7 of 7 Construction www.casqa.org Agreement No. 6574 Velocity Devices Description and Purpose Outlet protection is a physical device composed of rock, grouted riprap, or concrete rubble, which is placed at the outlet of a pipe or channel to prevent scour of the soil caused by concentrated, high velocity flows. Suitable Applications Whenever discharge velocities and energies at the outlets of culverts, conduits, or channels are sufficient to erode the next downstream reach. This includes temporary diversion structures to divert runon during construction. ■ These devices may be used at the following locations: - Outlets of pipes, drains, culverts, slope drains, diversion ditches, swales, conduits, or channels. - Outlets located at the bottom of mild to steep slopes. - Discharge outlets that carry continuous flows of water. - Outlets subject to short, intense flows of water, such as flash floods. Points where lined conveyances discharge to unlined conveyances Limitations a Large storms or high flows can wash away the rock outlet protection and leave the area susceptible to erosion. Categories EC Erosion Control 0 SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control .....m....... .......... ..........__ Legend: 0 Primary Objective ❑9 Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None IfWUser/Subscriber modifies this fact .. sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. T.ii�,LLw;an;�hdll. ttA l�'�'WJv,�,m„�mm!�'.4`1P� December 2019 CASQA BMP Handbook 1 of 5 Construction www.casqa.org Agreement No. 6574 Velodity DissipationDevices e Sediment captured by the rock outlet protection may be difficult to remove without removing the rock. • Outlet protection may negatively impact the channel habitat. • Grouted riprap may break up in areas of freeze and thaw. • If there is not adequate drainage, and water builds up behind grouted riprap, it may cause the grouted riprap to break up due to the resulting hydrostatic pressure. • Sediment accumulation, scour depressions, and/or persistent non-stormwater discharges can result in areas of standing water suitable for mosquito production in velocity dissipation devices. Implementation General Outlet protection is needed where discharge velocities and energies at the outlets of culverts, conduits or channels are sufficient to erode the immediate downstream reach. This practice protects the outlet from developing small eroded pools (plange pools) and protects against gully erosion resulting from scouring at a culvert mouth. Design and Layout As with most channel design projects, depth of flow, roughness, gradient, side slopes, discharge rate, and velocity should be considered in the outlet design. Compliance to local and state regulations should also be considered while working in environmentally sensitive streambeds. General recommendations for rock size and length of outlet protection mat are shown in the rock outlet protection figure in this BMP and should be considered minimums. The apron length and rock size gradation are determined using a combination of the discharge pipe diameter and estimate discharge rate: Select the longest apron length and largest rock size suggested by the pipe size and discharge rate. Where flows are conveyed in open channels such as ditches and swales, use the estimated discharge rate for selecting the apron length and rock size. Flows should be same as the culvert or channel design flow but never the less than the peak 5-year flow for temporary structures planned for one rainy season, or the 10-year peak flow for temporary structures planned for two or three rainy seasons. • There are many types of energy dissipaters, with rock being the one that is represented in the attached figure. • Best results are obtained when sound, durable, and angular rock is used. as Install riprap, grouted riprap, or concrete apron at selected outlet. Rpprap aprons are best suited for temporary use during construction. Grouted or wired tied rock riprap can minimize maintenance requirements. Rock outlet protection is usually less expensive and easier to install than concrete aprons or energy dissipaters. It also serves to trap sediment and reduce flow velocities. 0 Carefully place riprap to avoid damaging the filter fabric. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 Vel-ocillity Dissipation Devices ---EC-10 Stone 4 in. to 6 in. may be carefully dumped onto filter fabric from a height not to exceed 12 in. - Stone 8 in. to 12 in. must be hand placed onto filter fabric, or the filter fabric may be covered with 4 in. of gravel and the 8 in. to 12 in. rock may be dumped from a height not to exceed 16 in. - Stone greater than 12 in. shall only be dumped onto filter fabric protected with a layer of gravel with a thickness equal to one half the D5o rock size, and the dump height limited to twice the depth of the gravel protection layer thickness. For proper operation of apron: Align apron with receiving stream and keep straight throughout its length. If a curve is needed to fit site conditions, place it in upper section of apron. Outlets on slopes steeper than 10 percent should have additional protection. Costs Costs are low if material is readily available. If material is imported, costs will be higher. Average installed cost is $250 per device. Inspection and Maintenance • Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subjected to non-stormwater discharges daily while non-stormwater discharges occur. Minimize areas of standing water by removing sediment blockages and filling scour depressions. • Inspect apron for displacement of the riprap and damage to the underlying fabric. Repair fabric and replace riprap that has washed away. If riprap continues to wash away, consider using larger material. ■ Inspect for scour beneath the riprap and around the outlet. Repair damage to slopes or underlying filter fabric immediately. • Temporary devices should be completely removed as soon as the surrounding drainage area has been stabilized or at the completion of construction. References County of Sacramento Improvement Standards, Sacramento County, May 1989. Erosion and Sediment Control Handbook, S.J. Goldman, K. Jackson, T.A. Bursztynsky, P.E., McGraw Hill Book Company, 1986. Handbook of Steel Drainage & Highway Construction, American Iron and Steel Institute, 1983.. December 2019 CASQA BMP Handbook 3 of 5 Construction www.casqa.org Agreement No. 6574 Velocityp . ;r Devinces Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Metzger, M.E. 2004. Managing mosquitoes in stormwater treatment devices. University of California Division of Agriculture and Natural Resources, Publication 8125. On-line: http:// anrcatalog.ucdavis.edu/pdf/8125.pdf Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, state of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication *91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casqa.org Agreement No. 6574 Velocity Dissipa0 = ----------- 11 Pipe Diameter Discharge Apron Length, La Rip Rap D5o Diameter Min inches ft3/S ft inches 5 10 4 12 10 13 6 10 10 6 20 16 8 18 30 1 23 12 40 26 16 30 16 8 40 26 8 24 50 26 12 6o 30 16 For larger or higher flows consult a Registered Civil Engineer Source: USDA - SCS December 2019 CASQA BMP Handbook 5 of 5 Construction www.casqa.org Agreement No. 6574 9 �� Inii e Dirains EC- I !2=P ............. . . - Description and Purpose A slope drain is a pipe used to intercept and direct surface runoff or groundwater into a stabilized watercourse, trapping device, or stabilized area. Slope drains are used with earth dikes and drainage ditches to intercept and direct surface flow away from slope areas to protect cut or fill slopes. Suitable Applications w Where concentrated flow of surface runoff must be conveyed down a slope in order to prevent erosion. ar Drainage for top of slope diversion dikes or swales ■ Drainage for top of cut and fill slopes where water can accumulate. ■ Emergency spillway for a sediment basin. Limitations Installation is critical for effective use of the pipe slope drain to minimize potential gully erosion. a Maximum drainage area per slope drain is 10 acres. (For large areas use a paved chute, rock lined channel, or additional pipes.) Severe erosion may result when slope drains fail by overtopping, piping, or pipe separation. Categories EC Erosion Control W SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 2 Primary Objective ❑K Secondary Objective Targeted Constituents Sedimentm.,�,.�,�.,,,.mm.�,���,.�������w.,�000���.�._ Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-9 Earth Dike, Drainage Swales If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and Tooter below must be removed from each page and not appear on the modified version. iIC".."IFOLmCMu4:,!I� N"CA"K U"'A December 2019 CASQA BMP Handbook 1 of 7 Construction www.casqa.org Agreement No. 6574 Slope�r i n - During large storms, pipe slope drains may become clogged or over charged, forcing water around the pipe and causing extreme slope erosion. - If the sectional downdrain is not sized correctly, the runoff can spill over the drain sides causing gully erosion and potential failure of the structure. • Dissipation of high flow velocities at the pipe outlet is required to avoid downstream erosion. • Sediment accumulation, scour depressions, and/or persistent non-stormwater discharges can result in areas of standing water suitable for mosquito production in energy dissipaters associated with slope drain outlets. Implementation General The slope drain is applicable for any construction site where concentrated surface runoff can accumulate and must be conveyed down the slope in order to prevent erosion. The slope drain is effective because it prevents the stormwater from flowing directly down the slope by confining all the runoff into an enclosed pipe or channel. Due to the time lag between grading slopes and installation of permanent stormwater collection systems and slope stabilization measures, temporary provisions to intercept runoff are sometimes necessary. Particularly in steep terrain, slope drains can protect unstabilized areas from erosion. Installation The slope drain may be a rigid pipe, such as corrugated metal, a flexible conduit, or a lined terrace drain with the inlet placed on the top of a slope and the outlet at the bottom of the slope. This BMP typically is used in combination with a diversion control, such as an earth dike or drainage swale at the top of the slope. The following criteria must be considered when siting slope drains. • Permanent structures included in the project plans can often serve as construction BMPs if implemented early. However, the permanent structure must meet or exceed the criteria for the temporary structure. • Inlet structures must be securely entrenched and compacted to avoid severe gully erosion. • Slope drains must be securely anchored to the slope and must be adequately sized to carry the capacity of the design storm and associated forces. Outlets must be stabilized with riprap, concrete or other type of energy dissipator, or directed into a stable sediment trap or basin. See EC-10, Velocity Dissipation Devices. • Debris racks are recommended at the inlet. Debris racks located several feet upstream of the inlet can usually be larger than racks at the inlet, and thus provide enhanced debris protection and less plugging. • Safety racks are also recommended at the inlet and outlet of pipes where children or animals could become entrapped. • Secure inlet and surround with dikes to prevent gully erosion and anchor pipe to slope. December 2019 CASQA BMP Handbook 2 of 7 Construction www.casqa.org Agreement No. 6574 m When using slope drains, limit drainage area to io acres per pipe. For larger areas, use a rock lined channel or a series of pipes. a Size to convey at least the peak flow of a 10-year storm. The design storm is conservative due to the potential impact of system failures. • Maximum slope generally limited to 2:1 (H:V) as energy dissipation below steeper slopes is difficult. • Direct surface runoff to slope drains with interceptor dikes. See BMP EC-9, Earth Dikes and Drainage Swales. Top of interceptor dikes should be 12 in. higher than the top of the slope drain. m Slope drains can be placed on or buried underneath the slope surface. ® Recommended materials include both metal and plastic pipe, either corrugated or smooth wall. Concrete pipe can also be used. • When installing slope drains: - Install slope drains perpendicular to slope contours. - Compact soil around and under entrance, outlet, and along length of pipe. - Securely anchor and stabilize pipe and appurtenances into soil. - Check to ensure that pipe connections are watertight. - Protect area around inlet with filter cloth. Protect outlet with riprap or other energy dissipation device. For high energy discharges, reinforce riprap with concrete or use reinforced concrete device. - Protect outlet of slope drains using a flared end section when outlet discharges to a flexible energy dissipation device. - A flared end section installed at the inlet will improve flow into the slope drain and prevent erosion at the pipe entrance. Use a flared end section with a 6 in. minimum toe plate to help prevent undercutting. The flared section should slope towards the pipe inlet. Design and Layout The capacity for temporary drains should be sufficient to convey at least the peak runoff from a 10-year rainfall event. The pipe size may be computed using the Rational Method or a method established by the local municipality. Higher flows must be safely stored or routed to prevent any offsite concentration of flow and any erosion of the slope. The design storm is purposely conservative due to the potential impacts associated with system failures. As a guide, temporary pipe slope drains should not be sized smaller than shown in the following table: December 2019 CASQA BMP Handbook 3 of 7 Construction www.casga.org Agreement No. 6574 o pe Drains Minimum C Diameter Pipe � Maximum Drainage ...............................m ..._�__....le Area reeaa (Inches) (Acres) 12 1.0 18 3.0 24 .......... .......... 7.0 Larger drainage areas can be treated if the area can be subdivided into areas of 10 acres or less and each area is treated as a separate drainage. Drainage areas exceeding 10 acres must be designed by a Registered Civil Engineer and approved by the agency that issued the grading permit. Materials: Soil type, rainfall patterns, construction schedule, local requirements, and available supply are some of the factors to be considered when selecting materials. The following types of slope drains are commonly used: • Rigid Pipe: This type of slope drain is also known as a pipe drop. The pipe usually consists of corrugated metal pipe or rigid plastic pipe. The pipe is placed on undisturbed or compacted soil and secured onto the slope surface or buried in a trench. Concrete thrust blocks must be used when warranted by the calculated thrust forces. Collars should be properly installed and secured with metal strappings or watertight collars. • Flexible Pipe: The flexible pipe slope drain consists of a flexible tube of heavy-duty plastic, rubber, or composite material. The tube material is securely anchored onto the slope surface. The tube should be securely fastened to the metal inlet and outlet conduit sections with metal strappings or watertight collars. m Section Downdrains: The section downdrain consists of pre -fabricated, section conduit of half round or third round material. The sectional downdrain performs similar to a flume or chute. The pipe must be placed on undisturbed or compacted soil and secured into the slope. ■ Concrete -lined Terrace Drain: This is a concrete channel for draining water from a terrace on a slope to the next level. These drains are typically specified as permanent structures and if installed early, can serve as slope drains during construction, which should be designed according to local drainage design criteria. Costs Cost varies based on pipe selection and selected outlet protection. December 2019 CASQA BMP Handbook 4 of 7 Construction www.casqa.org Agreement No. 6574 Inspection and Maintenance • Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subjected to non-stormwater discharges daily while non-stormwater discharges occur. Minimize areas of standing water by removing sediment blockages and filling scour depressions. • Inspect outlet for erosion and downstream scour. If eroded, repair damage and install additional energy dissipation measures. If downstream scour is occurring, it may be necessary to reduce flows being discharged into the channel unless other preventative measures are implemented. • Insert inlet for clogging or undercutting. Remove debris from inlet to maintain flows. Repair undercutting at inlet and if needed, install flared section or rip rap around the inlet to prevent further undercutting. r Inspect pipes for leakage. Repair leaks and restore damaged slopes. December 2019 CASQA BMP Handbook 5 of 7 Construction www.casqa.org Agreement No. 6574 S�lope Drains Inspect slope drainage for accumulations of debris and sediment. • Remove built up sediment from entrances and outlets as required. Flush drains if necessary; capture and settle out sediment from discharge. • Make sure water is not ponding onto inappropriate areas (e.g., active traffic lanes, material storage areas, etc.). ® Pipe anchors must be checked to ensure that the pipe remains anchored to the slope. Install additional anchors if pipe movement is detected. References Draft — Sedimentation and Erosion Control, An Inventory of Current Practices, U.S.E.P.A., April 1990. Metzger, M.E. 2004. Managing mosquitoes in stormwater treatment devices. University of California Division of Agriculture and Natural Resources, Publication 8125.On-line: http:// anrcatalog.ucdavis.edu/pdf/8125.pdf National Association of Home Builders (NAHB). Stormwater Runoff & Nonpoint Source Pollution Control Guide for Builders and Developers. National Association of Home Builders, Washington, D.C., 1995 National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication *91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 6 of 7 Construction www.casqa.org Agreement No. 6574 Slope Drains EC-11 .......... j December 2019 CASQA BMP Handbook 7 of 7 Construction www.casqa.org Agreement No. 6574 StreiambStabilization Description and Purpose Stream channels, streambanks, and associated riparian areas are dynamic and sensitive ecosystems that respond to changes in land use activity. Streambank and channel disturbance resulting from construction activities can increase the stream's sediment load, which can cause channel erosion or sedimentation and have adverse affects on the biotic system. BMPs can reduce the discharge of sediment and other pollutants to minimize the impact of construction activities on watercourses. Streams on the 303(d) list and listed for sediment may require numerous measures to prevent any increases in sediment load to the stream. Suitable Applications These procedures typically apply to all construction projects that disturb or occur within stream channels and their associated riparian areas. Limitations Specific permit requirements or mitigation measures such as Regional Water Quality Control Board (RWQCB) 401 Certification, U.S. Army Corps of Engineers 404 permit and approval by California Department of Fish and Game supercede the guidance in this BMP. a If numerical based water quality standards are mentioned in any of these and other related permits, testing and sampling may be required. Streams listed as 303(d) impaired for sediment, silt, or turbidity, are required to Categories EC Erosion Control����0 SE Sediment Control ❑x TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Q Primary Objective ❑x Secondary Objective Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives Combination of erosion and sediment controls. If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. m mumu�m,mmm:ro,ram �mmwmmni�w�w��r.�m°m'mm December 2019 CASQA BMP Handbook 1 of 10 Construction www.casqa.org Agreement No. 6574 Streambank conduct sampling to verify that there is no net increase in sediment load due to construction activities. Implementation Planning Proper planning, design, and construction techniques can minimize impacts normally associated with in stream construction activities. Poor planning can adversely affect soil, fish, wildlife resources, land uses, or land users. Planning should take into account: scheduling; avoidance of in -stream construction; minimizing disturbance area and construction time period; using pre -disturbed areas; selecting crossing location; and selecting equipment. Scheduling a Construction activities should be scheduled according to the relative sensitivity of the environmental concerns and in accordance with EC-1, Scheduling. Scheduling considerations will be different when working near perennial streams vs. ephemeral streams and are as follows. m, When in -stream construction is conducted in a perennial stream, work should optimally be performed during the rainy season. This is because in the summer, any sediment -containing water that is discharged into the watercourse will cause a large change in both water clarity and water chemistry. During the rainy season, there is typically more and faster flowing water in the stream, so discharges are diluted faster. However, should in -stream work be scheduled for summer, establishing an isolation area, or diverting the stream, will significantly decrease the amount of sediment stirred up by construction work. Construction work near perennial streams should optimally be performed during the dry season (see below). When working in or near ephemeral streams, work should be performed during the dry season. By their very nature, ephemeral streams are usually dry in the summer, and therefore, in -stream construction activities will not cause significant water quality problems. However, when tying up the site at the end of the project, wash any fines (see Washing Fines) that accumulated in the channel back into the bed material, to decrease pollution from the first rainstorm of the season. a When working near ephemeral or perennial streams, erosion and sediment controls (see silt fences, straw bale barriers, etc.) should be implemented to keep sediment out of stream channel. Minimize Disturbance Minimize disturbance through: selection of the narrowest crossing location; limiting the number of equipment trips across a stream during construction; and, minimizing the number and size of work areas (equipment staging areas and spoil storage areas). Place work areas at least 50 ft from stream channel. Field reconnaissance should be conducted during the planning stage to identify work areas. Use of Pre -Disturbed Areas 4 Locate project sites and work areas in areas disturbed by prior construction or other activity when possible. December 2019 CASQA BMP Handbook 2 of 10 Construction www.casga.org Agreement No. 6574 Streambank Selection of Project Site Avoid steep and unstable banks, highly erodible or saturated soils, or highly fractured rock. Select project site that minimizes disturbance to aquatic species or habitat. Equipment Selection Select equipment that reduces the amount of pressure exerted on the ground surface, and therefore, reduces erosion potential and/or use overhead or aerial access for transporting equipment across drainage channels. Use equipment that exerts ground pressures of less than 5 or 6 lb/in2, where possible. Low ground pressure equipment includes: wide or high flotation tires (34 to 72 in. wide); dual tires; bogie axle systems; tracked machines; lightweight equipment; and, central tire inflation systems. Streambank Stabilization Preservation of Existing Vegetation w Preserve existing vegetation in accordance with EC-2, Preservation of Existing Vegetation. In a streambank environment, preservation of existing vegetation provides the following benefits. Water Quality Protection a Vegetated buffers on slopes trap sediment and promote groundwater recharge. The buffer width needed to maintain water quality ranges from 15 to 100 ft. On gradual slopes, most of the filtering occurs within the first 30 ft. Steeper slopes require a greater width of vegetative buffer to provide water quality benefits. Streambank Stabilization ■ The root system of riparian vegetation stabilizes streambanks by increasing tensile strength in the soil. The presence of vegetation modifies the moisture condition of slopes (infiltration, evapo transpiration, interception) and increases bank stability. Riparian Habitat a Buffers of diverse riparian vegetation provide food and shelter for riparian and aquatic organisms. Minimizing impacts to fisheries habitat is a major concern when working near streams and rivers. Riparian vegetation provides shade, shelter, organic matter (leaf detritus and large woody debris), and other nutrients that are necessary for fish and other aquatic organisms. Buffer widths for habitat concerns are typically wider than those recommended for water quality concerns (10o to 1500 ft). When working near watercourses, it is important to understand the work site's placement in the watershed. Riparian vegetation in headwater streams has a greater impact on overall water quality than vegetation in downstream reaches. Preserving existing vegetation upstream is necessary to maintain water quality, minimize bank failure, and maximize riparian habitat, downstream of the work site. Limitations a Local county and municipal ordinances regarding width, extent and type of vegetative buffer required may exceed the specifications provided here; these ordinances should be investigated prior to construction. December 2019 CASQA BMP Handbook 3 of 10 Construction www.casqa.org Agreement No. 6574 Streambank Stabilization Streambank Stabilization Specific Installation im As a general rule, the width of a buffer strip between a road and the stream is recommended to be 50 ft plus four times the percent slope of the land, measured between the road and the top of stream bank. Hydraulic Mulch Apply hydraulic mulch on disturbed streambanks above mean high water level in accordance with EC-3, Hydraulic Mulch to provide temporary soil stabilization. Limitations Do not place hydraulic mulch or tackifiers below the mean high-water level, as these materials could wash into the channel and impact water quality or possibly cause eutrophication (eutrophication is an algal bloom caused by excessively high nutrient levels in the water). Hydroseeding ■ Hydroseed disturbed streambanks in accordance with ECA Hydroseeding. Limitations ■ Do not place tackifiers or fertilizers below the mean high-water level, as these materials could wash into the channel and impact water quality or possibly cause eutrophication. Soil Binders m, Apply soil binders to disturbed streambanks in accordance with EC-5, Soil Binders. Limitations Do not place soil binders below the mean high-water level. Soil binder must be environmentally benign and non -toxic to aquatic organisms. Straw Mulch Apply straw mulch to disturbed streambanks in accordance with EC-6, Straw Mulch. Limitations a Do not place straw mulch below the mean high-water level, as this material could wash into the channel and impact water quality or possibly cause eutrophication. Geotextiles and Mats Install geotextiles and mats as described in EC-7, Geotextiles and Mats, to stabilize disturbed channels and streambanks. Not all applications should be in the channel, for example, certain geotextile netting may snag fish gills and are not appropriate in fish bearing streams. Geotextile fabrics that are not biodegradable are not appropriate for in stream use. Additionally, geotextile fabric or blankets placed in channels must be adequate to sustain anticipated hydraulic forces. Earth Dikes, Drainage Swales, and Lined Ditches al Convey, intercept, or divert runoff from disturbed streambanks using EC-9, Earth Dikes and Drainage Swales. December 2019 CASQA BMP Handbook 4 of 10 Construction www.casqa.org Agreement No. 6574 Limitations • Do not place earth dikes in watercourses, as these structures are only suited for intercepting sheet flow and should not be used to intercept concentrated flow. • Appropriately sized velocity dissipation devices (EC-1o) must be placed at outlets to minimize erosion and scour. Velocity Dissipation Devices 91 Place velocity dissipation devices at outlets of pipes, drains, culverts, slope drains, diversion ditches, swales, conduits or channels in accordance with EC-io, Velocity Dissipation Devices. Slope Drains Use slope drains to intercept and direct surface runoff or groundwater into a stabilized watercourse, trapping device or stabilized area in accordance with EC-11, Slope Drains. Limitations Appropriately sized outlet protection and velocity dissipation devices (EC-1o) must be placed at outlets to minimize erosion and scour. Streambank Sediment Control Silt Fences a Install silt fences in accordance with SE-1, Silt Fence, to control sediment. Silt fences should only be installed where sediment laden water can pond, thus allowing the sediment to settle out. Fiber Rolls Install fiber rolls in accordance with SE-5, Fiber Rolls, along contour of slopes above the high-water level to intercept runoff, reduce flow velocity, release the runoff as sheet flow and provide removal of sediment from the runoff. In a stream environment, fiber rolls should be used in conjunction with other sediment control methods such as SE-1, Silt Fence or SE-9 Straw Bale Barrier. Install silt fence, straw bale barrier, or other erosion control method along toe of slope above the high-water level. Gravel Bag Berm a A gravel bag berm or barrier can be utilized to intercept and slow the flow of sediment laden sheet flow runoff in accordance with SE-6, Gravel Bag Berm. In a stream environment gravel bag barrier can allow sediment to settle from runoff before water leaves the construction site and can be used to isolate the work area from the live stream. Limitations a Gravel bag barriers are not recommended as a perimeter sediment control practice around streams. Straw Bale Barrier Install straw bale barriers in accordance with SE-9, Straw Bale Barrier, to control sediment,. Straw bale barriers should only be installed where sediment laden water can pond, thus allowing the sediment to settle out. Install a silt fence in accordance with SE-1, Silt Fence, December 2019 CASQA BMP Handbook 5 of 10 Construction www.casqa.org Agreement No. 6574 -Streambank Stabilization on down slope side of straw bale barrier closest to stream channel to provide added sediment control. Rock Filter Description and Purpose Rock filters are temporary erosion control barriers composed of rock that is anchored in place. Rock filters detain the sediment laden runoff, retain the sediment, and release the water as sheet flow at a reduced velocity. Typical rock filter installations are illustrated at the end of this BMP. Applications Near the toe of slopes that may be subject to flow and rill erosion. Limitations • Inappropriate for contributing drainage areas greater than 5 acres. ■ Requires sufficient space for ponded water. • Ineffective for diverting runoff because filters allow water to slowly seep through. • Rock filter berms are difficult to remove when construction is complete. w• Unsuitable in developed areas or locations where aesthetics is a concern. Specifications • Rock: open graded rock, 0.75 to 5 in. for concentrated flow applications. • Woven wire sheathing: 1 in. diameter, hexagonal mesh, galvanized 2ogauge (used with rock filters in areas of concentrated flow). • In construction traffic areas, maximum rock berm heights should be 12 in. Berms should be constructed every 300 ft on slopes less than 5%, every 2O0 ft on slopes between 5% and to%, and every too ft on slopes greater than io%. Maintenance • Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and at two -week intervals in the non -rainy season to verify continued BMP implementation. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Reshape berms as needed and replace lost or dislodged rock, and filter fabric. • Sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one third of the barrier height. Sediment removed during maintenance may be incorporated into earthwork on the site or disposed at an appropriate location. December 2019 CASQA BMP Handbook 6 of 10 Construction www.casqa.org Agreement No. 6574 K-rail Description and Purpose This is temporary sediment control that uses K-rails to form the sediment deposition area, or to isolate the near bank construction area. Install K-rails at toe of slope in accordance with procedures described in NS-5, Clear Water Diversion. Barriers are placed end to end in a pre -designed configuration and gravel filled bags are used at the toe of the barrier and at their abutting ends to seal and prevent movement of sediment beneath or through the barrier walls. Appropriate Applications s This technique is useful at the toe of embankments, cuts or fills slopes. Limitations A The K-rail method should not be used to dewater a project site, as the barrier is not watertight. Implementation n Refer to NS-5, Clear Water Diversion, for implementation requirements. Instream Construction Sediment Control There are three different options currently available for reducing turbidity while working in a stream or river. The stream can be isolated from the area in which work is occurring by means of a water barrier, the stream can be diverted around the work site through a pipe or temporary channel, or one can employ construction practices that minimize sediment suspension. Whatever technique is implemented, an important thing to remember is that dilution can sometimes be the solution. A probable "worst time" to release high TSS into a stream system might be when the stream is very low; summer low flow, for example. During these times, the flow may be low while the biological activity in the stream is very high. Conversely, the addition of high TSS or sediment during a big storm discharge might have a relatively low impact, because the stream is already turbid, and the stream energy is capable of transporting both suspended solids, and large quantities of bedload through the system. The optimum time to "pull" in -stream structures may be during the rising limb of a storm hydrograph. Techniques to minimize Total Suspended Solids (TSS) ■ Padding - Padding laid in the stream below the work site may trap some solids that are deposited in the stream during construction. After work is done, the padding is removed from the stream, and placed on the bank to assist in re -vegetation. n Clean, washed gravel - Using clean, washed gravel decreases solid suspension, as there are fewer small particles deposited in the stream. x Excavation using a large bucket - Each time a bucket of soil is placed in the stream, a portion is suspended. Approximately the same amount is suspended whether a small amount of soil is placed in the stream, or a large amount. Therefore, using a large excavator bucket instead of a small one, will reduce the total amount of soil that washes downstream. December 2019 CASQA BMP Handbook 7 of 10 Construction www.casqa.org Agreement No. 6574 Sitreambaink Stabilization Use of dozer for backf lling - Using a dozer for backfilling instead of a backhoe follows the same principles — the fewer times soil is deposited in the stream, the less soil will be suspended. fa Partial dewatering with a pump - Partially dewatering a stream with a pump reduces the amount of water, and thus the amount of water that can suspend sediment. Washing Fines Definition and Purpose a Washing fines is an "in -channel" sediment control method, which uses water, either from a water truck or hydrant, to wash stream fines that were brought to the surface of the channel bed during restoration, back into the interstitial spaces of the gravel and cobbles. The purpose of this technique is to reduce or eliminate the discharge of sediment from the channel bottom during the first seasonal flow. Sediment should not be allowed into stream channels; however, occasionally in -channel restoration work will involve moving or otherwise disturbing fines (sand and silt sized particles) that are already in the stream, usually below bankfull discharge elevation. Subsequent re -watering of the channel can result in a plume of turbidity and sedimentation. ■i This technique washes the fines back into the channel bed. Bedload materials, including gravel cobbles, boulders and those fines, are naturally mobilized during higher storm flows. This technique is intended to delay the discharge until the fines would naturally be mobilized. Appropriate Applications a This technique should be used when construction work is required in channels. It is especially useful in intermittent or ephemeral streams in which work is performed "in the dry", and which subsequently become re -watered. Limitations • The stream must have sufficient gravel and cobble substrate composition. • The use of this technique requires consideration of time of year and timing of expected stream flows. • The optimum time for the use of this technique is in the fall, prior to winter flows. • Consultation with, and approval from the Department of Fish and Game and the Regional Water Quality Control Board may be required. Implementation ®! Apply sufficient water to wash fines, but not cause further erosion or runoff. • Apply water slowly and evenly to prevent runoff and erosion. • Consult with Department of Fish and Game and the Regional Water Quality Control Board for specific water quality requirements of applied water (e.g. chlorine). December 2019 CASQA 7 Handbook 8 of 10 Construction www.casqa.org Agreement No. 6574 Streamba,nk Inspection and Maintenance None necessary Costs Cost may vary according to the combination of practices implemented. Inspection and Maintenance m Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events until final stabilization is achieved. a Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. aaa Inspect and repair equipment (for damaged hoses, fittings, and gaskets). References Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992. Sedimentation and Erosion Control Practices, An Inventory of Current Practices (Draft), UEEPA, 1990. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 9 of 10 Construction www.casqa.org Agreement No. 6574 Streambank Stabilization EC-12 December 2019 CASQA BMP Handbook 10 of 10 Construction www.casqa.org Agreement No. 6574 Compost 4 Description and Purpose A compost blanket is applied to slopes and earth disturbed areas to prevent erosion, and in some cases, increase infiltration and/or establish vegetation. The compost blanket can be applied by hand, conveyor system, compost spreader, or pneumatic delivery (blower) system. The blanket thickness is determined from the slope steepness and anticipated precipitation. A compost blanket protects the soil surface from raindrop erosion, particularly rills and gullies that may form under other methods of erosion control. A compost blanket, if properly installed, can be very successful at vegetation establishment, weed suppression and erosion control. The compost blanket comes into direct contact with the underlying soil, reducing rill formation. Furthermore, compost provides organic matter and nutrients important for vegetation growth. The compost blanket provides soil structure that allows water to infiltrate the soil surface and retain moisture, which also promotes seed germination and vegetation growth, in addition to reducing runoff. Compost is typically derived from combinations of feedstocks, biosolids, leaf and yard trimmings, manure, wood, or mixed solid waste. Many types of compost are products of municipal recycle or "Green waste" programs. Compost is organic and biodegradable and can be left onsite. There are many types of compost with a variety of properties with specific functions, and accordingly, compost selection is an important design consideration in the application of this type of erosion control. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control 0 Primary Category ❑X Secondary Category Targeted Constituents �7 S�edim". irn"Went ...... .,�,�.ww Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-3 Hydraulic Mulch EC-4 Hydroseeding EC-5 Soil Binders EC-7 Geotextiles and Mats EC-8 Wood Mulching If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 4 Suitable Applications A compost blanket is appropriate for slopes and earth disturbed areas requiring protection until permanent stabilization is established. A compost blanket can also used in combination with temporary and/or permanent seeding strategies to enhance plant establishment. Examples include: Rough -graded areas that will remain inactive for longer than 14 days Soil stockpiles Slopes with exposed soil between existing vegetation such as trees or shrubs Slopes planted with live, container -grown vegetation Disturbed areas where plants are slow to develop A compost blanket is typically used on slopes of 2:1 (H:V) or gentler. However, a compost blanket can be effective when applied to slopes as steep as 1:1(H:V) with appropriate design considerations including slope length, blanket thickness, adding components such as a tackifier, or using compost blankets in conjunction with other techniques, such as compost socks and berms or fiber rolls. Compost can be pre -seeded prior to application to the soil (recommended by the EPA for construction site stormwater runoff control) or seeded after the blanket has been installed. The compost medium can also remove pollutants in stormwater including heavy metals; oil and grease; and hydrocarbons (USEPA, 1998). Limitations • Compost can potentially leach nutrients (dissolved phosphorus and nitrogen) into runoff and potentially impact water quality. Compost should not be used directly upstream from nutrient impaired waterbodies (Adams et. al, 2008). • Compost may also contain other undesirable constituents that are detrimental to water quality. Carefully consider the qualifications and experience of any compost producer/supplier. ■ A compost blanket applied by hand is more time intensive and potentially costly. Using a pneumatic blower truck is the recommended cost-effective method of application. • When blowers are used, the treatment areas should be within 3O0 ft of a road or surface capable of supporting trucks. • Wind may limit application of compost and result in application to undesired locations. • Compost blankets should not be applied in areas of concentrated flows. • Steeper slopes may require additional blanket thickness and other stability measures such as using tackifiers or slope interruption devices (compost socks and berms, or fiber rolls). The same applies for sites with high precipitation totals or during the rainy season. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Implementation a Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Compost Materials w California Compost Regulations (Title 14, California Code of Regulations, Division 7, Chapter 3.1, Article 7, Section 17868.3) define and require a quality of compost for application. Compost should comply with all physical and chemical requirements. Specific requirements are provided in Table 1 below, taken from Caltrans Standard Special Provision io-1(SSP io-1), Erosion Control (Compost Blanket). The compost producer should be fully permitted as specified under the California Integrated Waste Management Board, Local Enforcement Agencies and any other State and Local Agencies that regulate Solid Waste Facilities. If exempt from State permitting requirements, the composting facility should certify that it follows guidelines and procedures for production of compost meeting the environmental health standards of Title 14, California Code of Regulations, Division 7, Chapter 3.1, Article 7. a The compost producer should be a participant in United States Composting Council's Seal of Testing Assurance program. m Compost moisture should be considered for composition quality and application purposes. A range of 30-50% is typical. Compost that is too dry is hard to apply and compost that is too wet is more difficult (and more expensive) to transport. For and or semi -arid areas, or for application during the dry season, use compost with greater moisture content than areas with wetter climates. For wetter or more humid climates or for application during the wet season, drier composts can be used as the compost will absorb moisture from the ambient air. Organic content of the compost is also important and should range from 30 to 65% depending on site conditions. as Compost should be high -quality mature compost. Immature compost can potentially leach nutrients. awa Compost should not be derived from mixed municipal solid waste and should be free of visible contaminants. a Compost should not contain paint, petroleum products, pesticides or any other chemical residues harmful to animal life or plant growth. Metal concentrations in compost should not exceed the maximum metal concentrations listed under Title 14, California Code of Regulations, Division 7, Chapter 3.1, Section 17868.2. Compost should not possess objectionable odors. s Compost should be weed free. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 o Table i. Physical/Chemical Requirements of Compost c,Cal(r uns SP-jo Erosion Control Blanket 1(moo!�) 8 Pro ertv _.. �. _ ...... Test Met hod m mmmmm�W Re uirement *TMECC 04.ii-A pH Elastomeric pH 1:5 Slurry Method 6.0-8.0 _ pH Units ..........� .......... ..�w_ .-.� mmmmmmmmITTMECC .... Soluble Salts..... 04.io-A ____� .....����...... .. Electrical Conductivity 1:5 Slurry Method 0-10.0 dS/m (mmhos/cm) TMECC 03.o9-A Moisture Content Total Solids & Moisture at 70+/- 5 deg C 30-60 / ° is We.... . t Bas.�..... ..._...... ........._. Organic Matter TMECC 05.07-A _......... Content Loss -On -Ignition Organic Matter Method (LOI) 30-65 Dry Weight Basis TMECC 05.05-A Maturity Germination and Vigor Seed Emergence 8p or Above Seedling Vigor 80 or Above Relative to Positive Control TMECC 05.o8-B Stability Carbon Dioxide Evolution Rate 8 or below mgmCOz C/g OM per day _ i00% Passing, 3 inches TMECC 02.02-B go -t00% Passing, 1 inch Particle Size Sample Sieving for Aggregate Size Classification 65-100% Passing, 3/4 inch Dry Weight Basis 0 - 75% Passing, 1/4 inch Maximum length 6 inches Pathogen TMECC 07.oi-B Fecal Coliform Bacteria Pass < loon MPTJ/p, dry wt. Pathogen TMECC 07.01-B Salmonella Pass .... ..... .�mMPN q�'u'taa11 - dr wt. F_w'"k.._._..._..._.......:................................__.... _......,.,�............., ,........ TMECC 02.02-C ,,,,, ,............... Physical Contaminants Man Made Inert Removal and Classification: Combined Total: Plastic, Glass and Metal < 1.0 rlrrn fraction TMECC 02.02-C Man Made Inert Removal and Classification: Physical Contaminants Sharps (Sewing needles, straight pins and hypodermic None Detected needles) %_, *TMECC refers to '"'rest Methods for the Exarninat on of Composting and Compost, ...,.,�. " laubiislled by the United States Department of Agriculture and the United States Compost Council (USCC). Installation 0 Prior to compost application, prepare the slope by removing loose rocks, roots, stumps, and other debris greater than 2" in diameter. Prepare the slope area surface by scarifying or track walking/roughening if necessary. as Select method to apply the compost blanket. A pneumatic blower is most cost effective and most adaptive in applying compost to steep, rough terrain, and hard to reach locations. a A compost blanket thickness of 1" to 4" should be applied to slopes of 2:1 (H:V) or gentler, based on site -specific conditions. Increase blanket thickness with increased slope steepness and/or during installation during the rainy season (for example, 2" to 3" should be used for a December 2019 CASQA BMP Handbook 4 of 6 Construction www.casga.org Agreement No. 6574 CompostBlanket ,r.N, 3:1 slope, while 1" to 2" can be used for a 4:1 slope). Erosion control using a compost blanket is not recommended for slopes greater than 1:1(H:V). • For steeper slopes, tackifiers should be utilized and/or other stabilization techniques employed. For example, compost socks or berms can be installed at intervals over the compost blanket (in a similar manner as Fiber Rolls, SE-5). ■ Compost socks or berms (or equivalent linear sediment control BMP) should be placed at the top and/or bottom of the slope for additional erosion control performance. • For optimum vegetation establishment, a blanket thickness of 1" to 2" is recommended. If vegetation establishment is not the primary function of the compost blanket, a thicker blanket may be recommended based on slope or rainfall conditions. • Evenly distribute compost on the soil surface to the desired blanket thickness (1/2" to 4" as calculated prior based on -site conditions and objectives). Even distribution is an important factor in preventing future rill and gully erosion. ■ The compost blanket should extend 3 to 6 feet over the top of the shoulder of the slope. A compost sock or compost berm can be used at the top of the slope as an auxiliary technique to prevent runoff from flowing underneath the compost blanket. • Use additional anchoring and erosion control BMPs in conjunction of the compost blanket as needed. Costs The cost associated with a compost blanket is similar to that of a straw mat and generally less expensive than a geotextile blanket (USEPA, 2009). Caltrans has provided a recent estimate for $5,60o to $9,00o per acre for application of an unseeded 1-inch compost blanket (Caltrans Compost Specifications, 2Oo9. Adjusted for inflation (2016 dollars) by Tetra Tech, Inc.). Vendor costs indicate that proprietary blends of compost that are seeded and contain a nutrient rich "tackifier" can cost approximately $0.45 per square foot, or approximately $19,200 per acre for a 2-inch blanket (Adjusted for inflation (2oi6 dollars) by Tetra Tech, Inc.). Application by hand is more time intensive and likely more costly. Inspection and Maintenance • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Areas where erosion is evident, another layer of compost should be reapplied as soon as possible. It may be necessary to install an additional type of stormwater BMP at the top of slope or as a slope interrupter to control flow, such as a fiber roll (SE-5) or compost sock (SE-11). • Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require reapplication of BMPs. December 2019 CASQA BMP Handbook 5 of 6 Construction www.casqa.org Agreement No. 6574 -Compoist Blanket v Limit or prohibit foot traffic to minimize damage to BMP or impede vegetation establishment. References An Analysis of Composting as an Environmental Remediation Technology, U.S. Environmental Protection Agency (USEPA), Solid Waste and Emergency Response (5305W), EPA53o-R-8-oo8, 1998. Characteristics of Compost: Moisture Holding and Water Quality Improvement, Center for Research in Water Resources, Kirchoff, C., Malina, J., and Barrett, M., 2003. Compost Utilization for Erosion Control, The University of Georgia College of Agricultural and Environmental Sciences, pubs.caes.uga.edu/caespubs/pubcd/Bl200.htm, Faucette, B. and Risse, M., 2009. Demonstration Project Using Yard Debris Compost for Erosion Control, Final Report, presented to Metropolitan Service District, W&H Pacific, 1993. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, 2005. Standard Special Provision io-1, Erosion Control (Compost Blanket), California Department of Transportation (Caltrans). 2007 Update. Evaluation of Environmental Benefits and Impacts of Compost and Industry Standard Erosion and Sediment Controls Measures Used in Construction Activities, Dissertation, Institute of Ecology, University of Georgia, Faucette, B., 2004. Filter Sock Presentation provided at Erosion, Sediment Control and Stormwater Management with Compost BMPs Workshop, U.S. Composting Council 131h Annual Conference and Trade Show, McCoy, S., 2005. National Pollutant Discharge Elimination System (NPDES), Compost Blankets, U.S. Environmental Protection Agency (USEPA). 11�m�des sto3 znw leW me1rn iudex.cfan.a tio=faclslmeet re;,ulfs&vie s ap fib&mp=1, 2009. Standard Specifications for Transportation Materials and Methods of Sampling and Testing Designation M10-03, Compost for Erosion/Sediment Control (Compost Blankets), Provisional, American Association of State Highway Transportation Officials (AASHTO), 2003. Stormwater Best Management Practices (BMPs) Field Trials of Erosion Control Compost in Reclamation of Rock Quarry Operations, Nonpoint Source Protection Program CWA §319(h), Texas Commission on Environmental Quality, Adams, T., McFarland, A., Hauck, L., Barrett, M., and Eck, B., 2oo8. December 2019 CASQA BMP Handbook 6 of 6 Construction www.casqa.org Agreement No. 6574 rr>-q111111 , preparation of surface soils for BMP installation. This can include soil testing (for seed base, soil characteristics, or nutrients), as well as roughening surface soils by mechanical methods (including sheepsfoot rolling, track walking, scarifying, stair stepping, and imprinting) to prepare soil for additional BMPs, or to break up sheet flow. Soil Preparation can also involve tilling topsoil to prepare a seed bed and/or incorporation of soil amendments, to enhance vegetative establishment. Suitable Applications Soil preparation: Soil preparation is essential to proper vegetative establishment. In particular, soil preparation (i.e. tilling, raking, and amendment) is suitable for use in combination with any soil stabilization method, including Rolled Erosion Control Products (RECPs) or sod. Soil preparation should not be confused with roughening. Roughening: Soil roughening is generally referred to as track walking (sometimes called imprinting) a slope, where treads from heavy equipment run parallel to the contours of the slope and act as mini terraces. Soil preparation is most effective when used in combination with erosion controls. Soil Roughening is suitable for use as a complementary process for controlling erosion on a site. Roughening is not intended to be used as a stand-alone BMP, and should be used with perimeter controls, additional erosion control measures, grade breaks, and vegetative establishment for maximum effectiveness. Roughening is intended to only affect surface soils and should not compromise slope stability or overall compaction. Suitable applications for soil roughening include: Categories EC Erosion Control,�.���������������..�� , SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control Waste Management and WM Materials Pollution Control _......... Legend: 0 Primary Category ❑x Secondary Category Targeted Constituents Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-3 Hydraulic Mulch EC-5 Soil Binders EC-7 Geotextiles and Mats If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. m �mwnflusmmmucam,arm,muvnrewmro� December 2019 CASQA BMP Handbook 1 of 4 Construction www.casga.org Agreement No. 6574 Along any disturbed slopes, including temporary stockpiles, sediment basins, or compacted soil diversion berms and swales. Roughening should be used in combination with hydraulically applied stabilization methods, compost blanket, or straw mulch; but should not be used in combination with RECPs or sod because roughening is intended to leave terraces on the slope. Limitations • Preparation and roughening must take place prior to installing other erosion controls (such as hydraulically applied stabilizers) or sediment controls (such as fiber rolls) on the faces of slopes. a In such cases where slope preparation is minimal, erosion control/revegetation BMPs that do not require extensive soil preparation - such as hydraulic mulching and seeding applications - should be employed. • Consideration should be given to the type of erosion control BMP that follows surface preparation, as some BMPs are not designed to be installed over various types of tillage/roughening, i.e., RECPs should not be used with soil roughening due to a "bridging" effect, which suspends the blanket above the seed bed. • Surface roughness has an effect on the amount of mulch material that needs to be applied, which shows up as a general increase in mulch material due to an increase in surface area (Topographic Index -see EC-3 Hydraulic Mulch). Implementation Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. General A roughened surface can significantly reduce erosion. Based on tests done at the San Diego State Erosion Research Laboratory, various roughening techniques on slopes can result in a 12 - 76% reduction in the erosion rate versus smooth slopes. Materials Minimal materials are required unless amendments and/or seed are added to the soil. The majority of soil roughening/preparation can be done with equipment that is on hand at a normal construction site, such as bull dozers and compaction equipment. Installation Guidelines Soil Preparation a: Where appropriate or feasible, soil should be prepared to receive the seed by disking or otherwise scarifying the surface to eliminate crust, improve air and water infiltration and create a more favorable environment for germination and growth. Based upon soil testing conducted, apply additional soil amendments (e.g., fertilizers, additional seed) to the soil to help with germination. Follow EC-4, Hydroseeding, when selecting and applying seed and fertilizers. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 Cut Slope Roughening: • Stair -step grade or groove the cut slopes that are steeper than 3:1. • Use stair -step grading on any erodible material soft enough to be ripped with a bulldozer. Slopes consisting of soft rock with some subsoil are particularly suited to stair -step grading. • Make the vertical cut distance less than the horizontal distance, and slightly slope the horizontal position of the "step" in toward the vertical wall. • Do not make individual vertical cuts more than 2 ft. (0.6 m) high in soft materials or more than 3 ft. (0.9 m) high in rocky materials. • Groove the slope using machinery to create a series of ridges and depressions that run across the slope, on the contour. Fill Slope Roughening: a Place on fill slopes with a gradient steeper than 3:1 in lifts not to exceed 8 in. (0.2 m), and make sure each lift is properly compacted. ■ Ensure that the face of the slope consists of loose, uncompacted fill 4-6 in. (0.1-0.2 m) deep. ■ Use grooving or tracking to roughen the face of the slopes, if necessary. Do not blade or scrape the final slope face. Roughening for Slopes to be Mowed: • Slopes that require mowing activities should not be steeper than 3:1. • Roughen these areas to shallow grooves by track walking, scarifying, sheepsfoot rolling, or imprinting. ® Make grooves close together (less than 10 in.), and not less than 1 in. deep, and perpendicular to the direction of runoff (i.e., parallel to the slope contours). o Excessive roughness is undesirable where mowing is planned. Roughening with Tracked Machinery: m Limit roughening with tracked machinery to soils with a sandy textural component to avoid undue compaction of the soil surface. ■ Operate tracked machinery up and down the slope to leave horizontal depressions in the soil. Do not back -blade during the final grading operation. v Seed and mulch roughened areas as soon as possible to obtain optimum seed germination and growth. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 Soil w ! ` Roughening Costs Costs are based on the additional labor of tracking or preparation of the slope plus the cost of any required soil amendment materials. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Check the seeded slopes for signs of erosion such as rills and gullies. Fill these areas slightly above the original grade, then reseed and mulch as soon as possible. Inspect BMPs weekly during normal operations, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. References Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Description and Purpose Non -vegetative stabilization methods are used for temporary or permanent stabilization of areas prone to erosion and should be used only where vegetative options are not feasible; examples include: ■ Areas of vehicular or pedestrian traffic such as roads or paths; • Arid environments where vegetation would not provide timely ground coverage, or would require excessive irrigation; • Rocky substrate, infertile or droughty soils where vegetation would be difficult to establish; and to Areas where vegetation will not grow adequately within the construction time frame. There are several non -vegetative stabilization methods and selection should be based on site -specific conditions. Decomposed Granite (DG) is a permanent erosion protection method that consists of a layer of stabilized decomposed granite placed over an erodible surface. Degradable Mulches of various types (see EC-3, EC-6, EC-8) can be used for temporary non -vegetative stabilization; examples include straw mulch, compost, wood chips or hydraulic mulch. Geotextiles and Mats can be used for temporary non - vegetative stabilization (see EC-7). These BMPs are typically manufactured from degradable or synthetic materials and are Categories EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Category 0 Secondary Category Q 0 ❑x Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 5 Construction www.casqa.org Agreement No. 6574 Non -Vegetative Stabilization EC-16 designed and specified based on their functional longevity, i.e., how long they will persist and provide erosion protection. All geotextiles and mats should be replaced when they exceed their functional longevity or when permanent stabilization methods are instituted. Gravel Mulch is a non -degradable erosion control product that is composed of washed and screened coarse to very coarse gravel, 16 mm to 64 mm (o.6" - 2.5"), similar to an AASHTO No. 3 coarse aggregate. Rock Slope Protection consists of utilizing large rock or rip -rap (4"- 24") to stabilize slopes with a high erosion potential and those subject to scour along waterways. Soil Binders can be used for temporary non -vegetative stabilization (see EC-5). The key to their use is functional longevity. In most cases, the soil binder will need to be routinely monitored and re -applied to maintain an erosion -resistant coverage. Suitable Applications Non -vegetated stabilization methods are suitable for use on disturbed soil areas and on material stockpiles that need to be temporarily or permanently protected from erosion by water and wind. Non -vegetated stabilization should only be utilized when vegetation cannot be established in the required timeframe, due to soil or climactic conditions, or where vegetation may be a potential fire hazard. Decomposed Granite (DG) and Gravel Mulch are suitable for use in areas where vegetation establishment is difficult, on flat surfaces, trails and pathways, and when used in conjunction with a stabilizer or tackifier, on shallow slopes (i.e., 10:1 [H:V]). DG and gravel can also be used on shallow rocky slopes where vegetation cannot be established for permanent erosion control. Degradable Mulches can be used to cover and protect soil surfaces from erosion both in temporary and permanent applications. In many cases, the use of mulches by themselves requires routine inspection and re -application. See EC-3 Hydraulic Mulch, EC-6 Straw Mulch, EC-8 Wood Mulch, or EC-14 Compost Blankets for more information. Geotextiles and Mats can be used as a temporary stand-alone soil stabilization method. Depending on material selection, geotextiles and mats can be a short-term (3 mos —1 year) or long-term (1-2 years) temporary stabilization method. For more information on geotextiles and mats see EC-7 Geotextiles and Mats. Rock Slope Protection can be used when the slopes are subject to scour or have a high erosion potential, such as slopes adjacent to flowing waterways or slopes subject to overflow from detention facilities (spillways). Soil Binders can be used for temporary stabilization of stockpiles and disturbed areas not subject to heavy traffic. See EC-5 Soil Binders for more information. Limitations General ■ Refer to EC-3, EC-6, EC-8, and EC-14 for limitations on use of mulches. Refer to EC-7 for limitations on use of geotextiles and mats. Refer to EC-5 for limitations on use of Soil Binders. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 .Stabilization6 Decomposed Granite • Not available in some geographic regions, • If not tackified, material may be susceptible to erosion even on slight slopes (e.g., 30:1 [H:V]). • Installed costs may be more expensive than vegetative stabilization methods. Gravel Mulch • Availability is limited in some geographic regions. • If not properly screened and washed, can contain fine material that can erode and/or create dust problems. • If inadequately sized, material may be susceptible to erosion on sloped areas. ■ Pore spaces fill with dirt and debris over time; may provide a growing medium for weeds. Rock Slope Protection ■i Installation is labor intensive. • Installed costs can be significantly higher than vegetative stabilization methods. • Rounded stones may not be used on slopes greater than 2:1 [H:V]. Implementation General Non -vegetated stabilization should be used in accordance with the following general guidance: • Should be used in conjunction with other BMPs, including drainage, erosion controls and sediment controls. e Refer to EC-3, EC-6, EC-8, and EC-14 for implementation details for mulches. Refer to EC-7 for implementation details for geotextiles and mats. Refer to EC-5 for implementation details for soil binders. ■ Non -vegetated stabilization measures should be implemented as soon as the disturbance in the areas they are intended to protect has ceased. • Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook. Decomposed Granite Stabilization a If used for a road or path should be installed on a prepared base. ■ Should be mixed with a stabilizer if used for roads or pathways, or on slope applications. a, Though porous it is recommended to prevent standing water on or next to a decomposed granite road or pathway. December 2019 CASQA BMP Handbook 3 of 5 Construction www.casqa.org Agreement No. 6574 Gravel Mulch • Should be sized based on slope, rainfall, and upgradient run-on conditions. Stone size should be increased as potential for erosion increases (steeper slopes, high intensity rainfall). • If permanent, a weed control fabric should be placed prior to installation. • Should be installed at a minimum 2" depth. r Should completely cover all exposed surfaces. Rock Slope Protection • Rock slope protection installation should follow Caltrans Standard Specification 72-2: Rock Slope Protection. Refer to the specification for rock conformity requirements and installation methods. • When using rock slope protection, rock size and installation method should be specified by an Engineer. ■ A geotextile fabric should be placed prior to installation. Costs Costs are highly variable depending not only on technique chosen, but also on materials chosen within specific techniques. In addition, availability of certain materials will vary by region/location, which will also affect the cost. Costs of mulches, geotextiles and mats, and soil binders are presented in their respective fact sheets. Costs for decomposed granite, gravel mulch stabilization and rock slope protection may be higher depending on location and availability of materials. Caltrans has provided an estimate for gravel mulch of $13 - $2o/yd2 in flat areas and $14 - $3o/yd2 on side slopes (adjusted for inflation, 2o16 dollars). Inspection and Maintenance General • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • For permanent installation, require inspection periodically and after major storm events to look for signs of erosion or damage to the stabilization. • All damage should be repaired immediately. • Refer to EC-3, EC-6, EC-8, and EC-14 for inspection and maintenance requirements for mulches. Refer to EC-7 for inspection and maintenance requirements for geotextiles and mats. Refer to EC-5 for inspection and maintenance requirements for soil binders. Decomposed Granite and Gravel Mulch Stabilization Rake out and add decomposed granite or gravel as needed to areas subject to rill erosion. Inspect upgradient drainage controls and repair/modify as necessary. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casqa.org Agreement No. 6574 a Should remain stable under loose surface material. Any significant problem areas should be repaired to restore uniformity to the installation. References Arid Zone Forestry: A Guide for Field Technicians. Food and Agriculture Organization of the United Nations, 1989. Design of Roadside Channels with Flexible Linings, Hydraulic Engineering Circular Number 15, Third Edition, Federal Highway Administration, 2007. Design Standards for Urban Infrastructure - Soft Landscape Design, Department of Territory and Municipal Services - Australian Capital Territory .L v: www.t; rns. ct. ov.au w rk standards and rocedla°e d.i standardi for Urban infrastructure Erosion and Sediment Control Handbook: A Guide for Protection of State Waters through the use of Best Management Practices during Land Disturbing Activities, Tennessee Department of Environment and Conservation, 2002. Gravel Mulch, Landscape Architecture Non -Standard Specification 10-2, California Department of Transportation (Caltrans), h : www.dot.c,a.gov/ha/LandAreli/roadsideldetail-o'n,.htin. Maine Erosion and Sediment Control BMPs, DEPLW0588, Maine Department of Environmental Protection: Bureau of Land and Water Quality, 2003. National Menu of Best Management Practices, US Environmental Protection Agency, 20o6. Standard Specification 72-2: Rock Slope Protection. California Department of Transportation, 20o6. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. December 2019 CASQA BMP Handbook 5 of 5 Construction www.casqa.org Agreement No. 6574 PracticesWater Conservation Categories EC Erosion Control px SE Sediment Control ❑x TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Materials Pollution Control 0 Primary Objective 0 Secondary Objective Targeted Constituents ..,...... Description and Purpose .ed...... Water conservation practices are activities that use water Nutrients during the construction of a project in a manner that avoids Trash causing erosion and the transport of pollutants offsite. These practices can reduce or eliminate non-stormwater discharges. Metals Bacteria Suitable Applications Oil and Grease Water conservation practices are suitable for all construction Organics sites where water is used, including piped water, metered water, trucked water, and water from a reservoir. Potential Alternatives Limitations None s None identified. Implementation • Keep water equipment in good working condition. • Stabilize water truck filling area. If User/Subscriber modifies this fact sheet in any way, the CASQA • Repair water leaks promptly. name/logo and footer below must be removed from each page and not a Washing of vehicles and equipment on the construction site appear on the modified version. is discouraged. • Avoid using water to clean construction areas. If water must be used for cleaning or surface preparation, surface should be swept and vacuumed first to remove dirt. This will minimize amount of water required. December 2019 CASQA BMP Handbook 1 of 2 Construction www.casqa.org Agreement No. 6574 Water Conservation Practices NS-1 • Direct construction water runoff to areas where it can soak into the ground or be collected and used. ■ Authorized non-stormwater discharges to the storm drain system, channels, or receiving waters are acceptable with the implementation of appropriate BMPs. • Lock water tank valves to prevent unauthorized use. Costs The cost is small to none compared to the benefits of conserving water. Inspection and Maintenance • Inspect and verify that activity based BMPs are in place prior to the commencement of authorized non-stormwater discharges. a Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges are occuring. • Repair water equipment as needed to prevent unintended discharges. - Water trucks - Water reservoirs (water buffalos) - Irrigation systems - Hydrant connections References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 2 of 2 Construction www.casqa.org Agreement No. 6574 Description and Purpose Dewatering operations are practices that manage the discharge of pollutants when non-stormwater and accumulated precipitation (stormwater) must be removed from a work location to proceed with construction work or to provide vector control. The General Permit incorporates Numeric Action Levels (NAL) for turbidity (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Discharges from dewatering operations can contain high levels of fine sediment that, if not properly treated, could lead to exceedances of the General Permit requirements or Basin Plan standards. The dewatering operations described in this fact sheet are not Active Treatment Systems (ATS) and do not include the use of chemical coagulations, chemical flocculation or electrocoagulation. Suitable Applications These practices are implemented for discharges of non- stormwater from construction sites. Non-stormwaters include, but are not limited to, groundwater, water from cofferdams, water diversions, and waters used during construction activities that must be removed from a work area to facilitate construction. Practices identified in this section are also appropriate for implementation when managing the removal of accumulated Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control ........ Le.. _. _ _.............. end: Q Primary Category ❑x Secondary Category Targeted Constituents C Q Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Q Organics Potential Alternatives S -5: Fiber Roll SE-6: Gravel Bag Berm If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. G l4 0T)11N 019.'V,'1y ,! IN Yd`"Ai i4'('V,Uo December 2019 CASQA BMP Handbook 1 of 10 Construction www.casga.org Agreement No. 6574 Diewatering Operations precipitation (stormwater) from depressed areas at a construction site. Stormwater mixed with non-stormwater should be managed as non-stormwater. Limitations ® Dewatering operations will require and should comply with applicable local and project - specific permits and regulations. In some areas, all dewatering activities, regardless of the discharge volume, require a dewatering permit. ■ Site conditions will dictate design and use of dewatering operations. • The controls discussed in this fact sheet primarily address sediment. Other secondary pollutant removal benefits are discussed where applicable. • The controls detailed in this fact sheet only allow for minimal settling time for sediment particles. Use only when site conditions restrict the use of the other control methods. • Avoid dewatering discharges where possible by using the water for dust control. Implementation • A Construction Site Monitoring Plan (CSMP) should be included in the project Stormwater Pollution Prevention Plan (SWPPP). • Regional Water Quality Control Board (RWQCB) Regions may require notification and approval prior to any discharge of water from construction sites. The destination of discharge from dewatering activities will typically determine the type of permit required for the discharge. For example, when discharging to a water of the U.S., a dewatering permit may be required through the site's governing RWQCB. When discharging to a sanitary sewer or Municipal Separate Storm Sewer System (MS4), a permit may need to be obtained from the owner of the sanitary sewer or MS4 in addition to obtaining an RWQCB dewatering permit. Additional permits or permissions from other agencies may be required for dewatering cofferdams or diversions. • Dewatering discharges should not cause erosion at the discharge point. Appropriate BMPs should be implemented to maintain compliance with all applicable permits. ■ Maintain dewatering records in accordance with all local and project -specific permits and regulations. Sediment Treatment A variety of methods can be used to treat water during dewatering operations. Several devices are presented below and provide options to achieve sediment removal. The sediment particle size and permit or receiving water limitations on sediment or turbidity are key considerations for selecting sediment treatment option(s); in some cases, the use of multiple devices may be appropriate. Use of other enhanced treatment methods (i.e., introduction of chemicals or electric current to enhance flocculation and removal of sediment) must comply with: 1) for storm drain or surface water discharges, the requirements for Active Treatment Systems (see 5E-11); or 2) for sanitary sewer discharges, the requirements of applicable sanitary sewer discharge permits. December 2019 CASQA BMP Handbook 2 of 10 Construction www.casga.org Agreement No. 6574 Sediment Basin (see also SE-2) Description: ■ A sediment basin is a temporary basin with a controlled release structure that is formed by excavation or construction of an embankment to detain sediment -laden runoff and allow sediment to settle out before discharging. Sediment basins are generally larger than Sediment Traps (SE-3) and have a designed outlet structure. Appropriate Applications: Effective for the removal of trash, gravel, sand, silt, some metals that settle out with the sediment. Implementation: Excavation and construction of related facilities is required. Temporary sediment basins should be fenced if safety is a concern. Outlet protection is required to prevent erosion at the outfall location. Maintenance: 01 Maintenance is required for safety fencing, vegetation, embankment, inlet and outlet, as well as other features. x Removal of sediment is required when the storage volume is reduced by one-third. Sediment Trap (See also SE-3) Description: n A sediment trap is a temporary basin formed by excavation and/or construction of an earthen embankment across a waterway or low drainage area to detain sediment -laden runoff and allow sediment to settle out before discharging. Sediment traps are generally smaller than Sediment Basins (SE-2) and do not have a designed outlet (but do have a spillway or overflow). Appropriate Applications: Effective for the removal of large and medium sized particles (sand and gravel) and some metals that settle out with the sediment. Implementation: * Excavation and construction of related facilities is required. Trap inlets should be located to maximize the travel distance to the trap outlet. Use rock or vegetation to protect the trap outlets against erosion. Maintenance: a Maintenance is required for vegetation, embankment, inlet and outfall structures, as well as other features. Removal of sediment is required when the storage volume is reduced by one-third December 2019 CASQA BMP Handbook 3 of 10 Construction www.casqa.org Agreement No. 6574 Diewaterming7. Weir Tanks Description: A weir tank separates water and waste by using weirs. The configuration of the weirs (over and under weirs) maximizes the residence time in the tank and determines the waste to be removed from the water, such as oil, grease, and sediments. Appropriate Applications: ■ The tank removes trash, some settleable solids (gravel, sand, and silt), some visible oil and grease, and some metals (removed with sediment). To achieve high levels of flow, multiple tanks can be used in parallel. If additional treatment is desired, the tanks can be placed in series or as pre-treatment for other methods. Implementation: • Tanks are delivered to the site by the vendor, who can provide assistance with set-up and operation. • Tank size will depend on flow volume, constituents of concern, and residency period required. Vendors should be consulted to appropriately size tank. Ni Treatment capacity (i.e., volume and number of tanks) should provide at a minimum the required volume for discrete particle settling for treatment design flows. Maintenance: • Periodic cleaning is required based on visual inspection or reduced flow. • Oil and grease disposal should be conducted by a licensed waste disposal company. December 2019 CASQA BMP Handbook 4 of 10 Construction www.casga.org Agreement No. 6574 Dewatering Operations Dewatering Tanks Description: m A dewatering tank removes debris and sediment. Flow enters the tank through the top, passes through a fabric filter, and is discharged through the bottom of the tank. The filter separates the solids from the liquids. Appropriate Applications: w The tank removes trash, gravel, sand, and silt, some visible oil and grease, and some metals (removed with sediment). To achieve high levels of flow, multiple tanks can be used in parallel. If additional treatment is desired, the tanks can be placed in series or as pre- treatment for other methods. Implementation: • Tanks are delivered to the site by the vendor, who can provide assistance with set-up and operation. ■ Tank size will depend on flow volume, constituents of concern, and residency period required. Vendors should be consulted to appropriately size tank. Maintenance: • Periodic cleaning is required based on visual inspection or reduced flow. • Oil and grease disposal should be conducted by licensed waste disposal company. December 2019 CASQA BMP Handbook 5 of 10 Construction www.casga.org Agreement No. 6574 D Gravity Bag Filter DEWATERING BAG AVAILABLE IN VARIOUS SHAPES AND SIZES FOR SEDIMENT CONTAINMENT , TIE DOWN �� ti �V STRAP \ WATER PUMP PUMP DISCHARGE HOSE FILTERED WATER Description: a A gravity bag filter, also referred to as a dewatering bag, is a square or rectangular bag made of non -woven geotextile fabric that collects gravel, sand, silt, and fines. Appropriate Applications: a Effective for the removal of sediments (gravel, sand, silt, and fines). Some metals are removed with the sediment. Implementation: in Water is pumped into one side of the bag and seeps through the top, bottom, and sides of the bag. a Place filter bag on pavement or a gravel bed or paved surface. Avoid placing a dewatering bag on unprotected bare soil. If placing the bag on bare soil is unavoidable, a secondary barrier should be used, such as a rock filter bed placed beneath and beyond the edges of the bag to, prevent erosion and capture sediments that escape the bag. a Perimeter control around the downstream end of the bag should be implemented. Secondary sediment controls are important especially in the initial stages of discharge, which tend to allow fines to pass through the bag. Maintenance: a Inspection of the flow conditions, bag condition, bag capacity, and the secondary barrier (as applicable) is required. to Replace the bag when it no longer filters sediment or passes water at a reasonable rate. a Caution should be taken when removing and disposing of the bag, to prevent the release of captured sediment a Properly dispose of the bag offsite. If sediment is removed from the bag prior to disposal (bags can potentially be reused depending upon their condition), dispose of sediment in accordance with the general maintenance procedures described at the end of this BMP Fact Sheet. December 2019 CASQA BMP Handbook 6 of 10 Construction www.casqa.org Agreement No. 6574 Sand Media Particulate Filter Description: ■ Water is treated by passing it through canisters filled with sand media. Generally, sand filters provide a final level of treatment. They are often used as a secondary or higher level of treatment after a significant amount of sediment and other pollutants have been removed using other methods. Appropriate Applications: w Effective for the removal of trash, gravel, sand, and silt and some metals, as well as the reduction of biochemical oxygen demand (BOD) and turbidity. Sand filters can be used for stand-alone treatment or in conjunction with bag and cartridge filtration if further treatment is required. Sand filters can also be used to provide additional treatment to water treated via settling or basic filtration. Implementation: in The filters require delivery to the site and initial set up. The vendor can provide assistance with installation and operation. Maintenance: The filters require regular service to monitor and maintain the level of the sand media. If subjected to high loading rates, filters can plug quickly. m Venders generally provide data on maximum head loss through the filter. The filter should be monitored daily while in use and cleaned when head loss reaches target levels. If cleaned by backwashing, the backwash water may need to be hauled away for disposal or returned to the upper end of the treatment train for another pass through the series of dewatering BMPs. December 2019 CASQA BMP Handbook 7 of 10 Construction www.casqa.org Agreement No. 6574 Dewaterling, Operations Pressurized Bag Filter Description: ® A pressurized bag filter is a unit composed of single filter bags made from polyester felt material. The water filters through the unit and is discharged through a header. Vendors provide bag filters in a variety of configurations. Some units include a combination of bag filters and cartridge filters for enhanced contaminant removal. Appropriate Applications: a Effective for the removal of sediment (sand and silt) and some metals, as well as the reduction of BOD, turbidity, and hydrocarbons. Oil absorbent bags are available for hydrocarbon removal. Filters can be used to provide secondary treatment to water treated via settling or basic filtration. Implementation: The filters require delivery to the site and initial set up. The vendor can provide assistance with installation and operation. Maintenance: is The filter bags require replacement when the pressure differential equals or exceeds the manufacturer's recommendation. December 2019 CASQA BMP Handbook 8 of 10 Construction www.casqa.org Agreement No. 6574 Cartridge Filter Description: Cartridge filters provide a high degree of pollutant removal by utilizing a number of individual cartridges as part of a larger filtering unit. They are often used as a secondary or higher (polishing) level of treatment after a significant amount of sediment and other pollutants are removed. Units come with various cartridge configurations (for use in series with bag filters) or with a larger single cartridge filtration unit (with multiple filters within). Appropriate Applications: n Effective for the removal of sediment (sand, silt, and some clays) and metals, as well as the reduction of BOD, turbidity, and hydrocarbons. Hydrocarbons can effectively be removed with special resin cartridges. Filters can be used to provide secondary treatment to water treated via settling or basic filtration. Implementation: ■ The filters require delivery to the site and initial set up. The vendor can provide assistance. Maintenance: The cartridges require replacement when the pressure differential equals or exceeds the manufacturer's recommendation. Costs Sediment control costs vary considerably depending on the dewatering and sediment treatment system that is selected. Pressurized filters tend to be more expensive than gravity settling but are often more effective. Simple tanks are generally rented on a long-term basis (one or more months) and can range from $46o per month for a i,000-gallon tank to $3,400 per month for a lo,000-gallon tank (adjusted for inflation, 2016 dollars, by Tetra Tech Inc.). Mobilization and demobilization costs vary considerably. Inspection and Maintenance w Inspect and verify that dewatering BMPs are in place and functioning prior to the commencement of activities requiring dewatering. • Inspect dewatering BMPs daily while dewatering activities are being conducted. December 2019 CASQA BMP Handbook 9 of 10 Construction www.casga.org Agreement No. 6574 Dewatering Operations • Inspect all equipment before use. Monitor dewatering operations to ensure they do not cause offsite discharge or erosion. • Sample dewatering discharges as required by the General Permit. a Unit -specific maintenance requirements are included with the description of each unit. • Sediment removed during the maintenance of a dewatering device may be either spread onsite and stabilized or disposed of at a disposal site as approved by the owner. ■ Sediment that is commingled with other pollutants should be disposed of in accordance with all applicable laws and regulations and as approved by the owner. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003; Updated March 2004. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. Labor Surcharge & Equipment Rental Rates, April 1, 2002 through March 31, 2003, California Department of Transportation (Caltrans). Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 10 of 10 Construction www.casga.org Agreement No. 6574 Description and Purpose Prevent or reduce the discharge of pollutants from paving operations, using measures to prevent runon and runoff pollution, properly disposing of wastes, and training employees and subcontractors. The General Permit incorporates Numeric Action Levels (NAL) for pH and turbidity (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Many types of construction materials associated with paving and grinding operations, including mortar, concrete, and cement and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows, which could lead to exceedances of the General Permit requirements. Suitable Applications These procedures are implemented where paving, surfacing, resurfacing, or sawcutting, may pollute stormwater runoff or discharge to the storm drain system or watercourses. Categories EC�����������Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: ........... . Q Primary Category ❑x Secondary Category Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Q Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. Limitations a Paving limited opportunities maybe during wet weather. Discharges of freshly paved surfaces may raise pH to im environmentally harmful levels and trigger permit violations. December 2019 CASQA BMP Handbook 1 of 5 Construction www.casga.org Agreement No. 6574 " avoing and Grinding Operations Implementation General ■ Avoid paving during the wet season when feasible. 1 Reschedule paving and grinding activities if rain is forecasted. a Train employees and sub -contractors in pollution prevention and reduction. ■ Store materials away from drainage courses to prevent stormwater runon (see WM-1, Material Delivery and Storage). • Protect drainage courses, particularly in areas with a grade, by employing BMPs to divert runoff or to trap and filter sediment. • Stockpile material removed from roadways away from drain inlets, drainage ditches, and watercourses. These materials should be stored consistent with WM-3, Stockpile Management. • Disposal of PCC (Portland cement concrete) and AC (asphalt concrete) waste should be in conformance with WM-8, Concrete Waste Management. Saw Cutting, Grinding, and Pavement Removal * Shovel or vacuum saw -cut slurry and remove from site. Cover or barricade storm drains during saw cutting to contain slurry. When paving involves AC, the following steps should be implemented to prevent the discharge of grinding residue, uncompacted or loose AC, tack coats, equipment cleaners, or unrelated paving materials: - AC grindings, pieces, or chunks used in embankments or shoulder backing should not be allowed to enter any storm drains or watercourses. Install inlet protection and perimeter controls until area is stabilized (i.e. cutting, grinding or other removal activities are complete and loose material has been properly removed and disposed of)or permanent controls are in place. Examples of temporary perimeter controls can be found in EC-9, Earth Dikes and Drainage Swales; SE-1, Silt Fence; SE-5, Fiber Rolls, or SE-13 Compost Socks and Berms - Collect and remove all broken asphalt and recycle when practical. Old or spilled asphalt should be recycled or disposed of properly. • Do not allow saw -cut slurry to enter storm drains or watercourses. Residue from grinding operations should be picked up by a vacuum attachment to the grinding machine, or by sweeping, should not be allowed to flow across the pavement, and should not be left on the surface of the pavement. See also WM-8, Concrete Waste Management, and WM-1o, Liquid Waste Management. • Pavement removal activities should not be conducted in the rain. • Collect removed pavement material by mechanical or manual methods. This material may be recycled for use as shoulder backing or base material. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 =GT a If removed pavement material cannot be recycled, transport the material back to an approved storage site. Asphaltic Concrete Paving If paving involves asphaltic cement concrete, follow these steps: - Do not allow sand or gravel placed over new asphalt to wash into storm drains, streets, or creeks. Vacuum or sweep loose sand and gravel and properly dispose of this waste by referring to WM-5, Solid Waste Management. - Old asphalt should be disposed of properly. Collect and remove all broken asphalt from the site and recycle whenever possible. Portland Cement Concrete Paving a Do not wash sweepings from exposed aggregate concrete into a storm drain system. Collect waste materials by dry methods, such as sweeping or shoveling, and return to aggregate base stockpile or dispose of properly. Allow aggregate rinse to settle. Then, either allow rinse water to dry in a temporary pit as described in WM-8, Concrete Waste Management, or pump the water to the sanitary sewer if authorized by the local wastewater authority. Sealing Operations e During chip seal application and sweeping operations, petroleum or petroleum covered aggregate should not be allowed to enter any storm drain or water courses. Apply temporary perimeter controls until structure is stabilized (i.e. all sealing operations are complete and cured and loose materials have been properly removed and disposed). a Inlet protection (SE-lo, Storm Drain Inlet Protection) should be used during application of seal coat, tack coat, slurry seal, and fog seal. a Seal coat, tack coat, slurry seal, or fog seal should not be applied if rainfall is predicted to occur during the application or curing period. Paving Equipment a Leaks and spills from paving equipment can contain toxic levels of heavy metals and oil and grease. Place drip pans or absorbent materials under paving equipment when not in use. Clean up spills with absorbent materials and dispose of in accordance with the applicable regulations. See NS-io, Vehicle and Equipment Maintenance, WMA, Spill Prevention and Control, and WM-1o, Liquid Waste Management. a Substances used to coat asphalt transport trucks and asphalt spreading equipment should not contain soap and should be non -foaming and non -toxic. a Paving equipment parked onsite should be parked over plastic to prevent soil contamination. a Clean asphalt coated equipment offsite whenever possible. When cleaning dry, hardened asphalt from equipment, manage hardened asphalt debris as described in WM-5, Solid Waste Management. Any cleaning onsite should follow NS-8, Vehicle and Equipment Cleaning. December 2019 CASQA BMP Handbook 3 of 5 Construction www.casga.org Agreement No. 6574 Paving and: Grinding Operations Thermoplastic Striping Thermoplastic striper and pre -heater equipment shutoff valves should be inspected to ensure that they are working properly to prevent leaking thermoplastic from entering drain inlets, the stormwater drainage system, or watercourses. Pre -heaters should be filled carefully to prevent splashing or spilling of hot thermoplastic. Leave six inches of space at the top of the pre -heater container when filling thermoplastic to allow room for material to move. x Do not pre -heat, transfer, or load thermoplastic near drain inlets or watercourses. a Clean truck beds daily of loose debris and melted thermoplastic. When possible, recycle thermoplastic material. Raised/Recessed Pavement Marker Application and Removal Do not transfer or load bituminous material near drain inlets, the stormwater drainage system, or watercourses. Melting tanks should be loaded with care and not filled to beyond six inches from the top to leave room for splashing. m When servicing or filling melting tanks, ensure all pressure is released before removing lids to avoid spills. ■ On large-scale projects, use mechanical or manual methods to collect excess bituminous material from the roadway after removal of markers. Costs All of the above are low cost measures. Inspection and Maintenance a Inspect and verify that activity -based BMPs are in place prior to the commencement of paving and grinding operations. r BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. a Sample stormwater runoff required by the General Permit. Keep ample supplies of drip pans or absorbent materials onsite. a Inspect and maintain machinery regularly to minimize leaks and drips. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- December 2019 CASQA BMP Handbook 4 of 5 Construction www.casga.org Agreement No. 6574 Paving d Grinding Operations III Hot Mix Asphalt -Paving Handbook AC 150/5370-14, Appendix i, U.S. Army Corps of Engineers, July 1991. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 5 of 5 Construction www.casqa.org Agreement No. 6574 Temporary Stream Crossing NSi-4 Description and Purpose A temporary stream crossing is a temporary culvert, ford or bridge placed across a waterway to provide access for construction purposes for a period of less than one year. Temporary access crossings are not intended to maintain traffic for the public. The temporary access will eliminate erosion and downstream sedimentation caused by vehicles. Suitable Applications Categories EC Erosion Control 19 SE Sediment Control 19 TC Tracking Control 99 WE Wind Erosion Control NS Non-Stormwater B Management Control WM Waste Management and Materials Pollution Control Legend: ___..��........_ 0 Primary Objective 0 Secondary Objective Targeted Constituents ........... ..Sediment 1Z.. Nutrients Trash Metals Bacteria Oil and Grease Organics Temporarystream crossings should be installed at all g � Alternatives Potential Alternatives designated crossings of perennial and intermittent streams on�.,wda.... the construction site, as well as for dry channels that may be None significantly eroded by construction traffic. Temporary streams crossings are installed at sites: If User/Subscriber modifies this fact • Where appropriate permits have been secured (404 sheet in any way, the CASQA Permits, and 401 Certifications) name/logo and footer below must be removed from each page and not m Where construction equipment or vehicles need to appear on the modified version. frequently cross a waterway When alternate access routes impose significant constraints ■ When crossing perennial streams or waterways causes significant erosion ■ Where construction activities will not last longer than one year December 2019 CASQA BMP Handbook 1 of 8 Construction www.casqa.org Agreement No. 6574 Temporary ream Crossin Where appropriate permits have been obtained for the stream crossing Limitations The following limitations may apply: • Installation and removal will usually disturb the waterway. • Installation may require Regional Water Quality Control Board (RWQCB) 401 Certification, U.S. Army Corps of Engineers 404 permit and approval by California Department of Fish and Game. If numerical -based water quality standards are mentioned in any of these and other related permits, testing and sampling may be required. • Installation may require dewatering or temporary diversion of the stream. See NS-2, Dewatering Operations and NS-5, Clear Water Diversion. • Installation may cause a constriction in the waterway, which can obstruct flood flow and cause flow backups or washouts. If improperly designed, flow backups can increase the pollutant load through washouts and scouring. • Use of natural or other gravel in the stream for construction of Cellular Confinement System (CCS) ford crossing will be contingent upon approval by fisheries agencies. w Ford crossings may degrade water quality due to contact with vehicles and equipment. • May be expensive for a temporary improvement. • Requires other BMPs to minimize soil disturbance during installation and removal. Fords should only be used in dry weather. Implementation General The purpose of this BMP is to provide a safe, erosion -free access across a stream for construction equipment. Minimum standards and specifications for the design, construction, maintenance, and removal of the structure should be established by an engineer registered in California. Temporary stream crossings may be necessary to prevent construction equipment from causing erosion of the stream and tracking sediment and other pollutants into the stream. Temporary stream crossings are used as access points to construction sites when other detour routes may be too long or burdensome for the construction equipment. Often heavy construction equipment must cross streams or creeks, and detour routes may impose too many constraints such as being too narrow or poor soil strength for the equipment loadings. Additionally, the contractor may find a temporary stream crossing more economical for light — duty vehicles to use for frequent crossings and may have less environmental impact than construction of a temporary access road. Location of the temporary stream crossing should address: a Site selection where erosion potential is low. December 2019 CASQA BMP Handbook 2 of 8 Construction www.casqa.org Agreement No. 6574 Areas where the side slopes from site runoff will not spill into the side slopes of the crossing. The following types of temporary stream crossings should be considered: Culverts — A temporary culvert is effective in controlling erosion but will cause erosion during installation and removal. A temporary culvert can be easily constructed and allows for heavy equipment loads. Fords - Appropriate during the dry season in and areas. Used on dry washes and ephemeral streams, and low -flow perennial streams. CCS, a type of ford crossing, is also appropriate for use in streams that would benefit from an influx of gravels. A temporary ford provides little sediment and erosion control and is ineffective in controlling erosion in the stream channel. A temporary ford is the least expensive stream crossing and allows for maximum load limits. It also offers very low maintenance. Fords are more appropriate during the dry ice season and in and areas of California. Bridges - Appropriate for streams with high flow velocities, steep gradients and where temporary restrictions in the channel are not allowed. Design During the long summer construction season in much of California, rainfall is infrequent, and many streams are dry. Under these conditions, a temporary ford may be sufficient. A ford is not appropriate if construction will continue through the winter rainy season, if summer thunderstorms are likely, or if the stream flows during most of the year. Temporary culverts and bridges should then be considered and, if used, should be sized to pass a significant design storm (i.e., at least a 10-year storm). The temporary stream crossing should be protected against erosion, both to prevent excessive sedimentation in the stream and to prevent washout of the crossing. Design and installation requires knowledge of stream flows and soil strength. Designs should be prepared under direction of, and approved by, a registered civil engineer and for bridges, a registered structural engineer. Both hydraulic and construction loading requirements should be considered with the following: in Comply with any special requirements for culvert and bridge crossings, particularly if the temporary stream crossing will remain through the rainy season. w Provide stability in the crossing and adjacent areas to withstand the design flow. The design flow and safety factor should be selected based on careful evaluation of the risks due to over topping, flow backups, or washout. a Install sediment traps immediately downstream of crossings to capture sediments. See SE-3, Sediment Trap. Avoid oil or other potentially hazardous materials for surface treatment. a Culverts are relatively easy to construct and able to support heavy equipment loads. ■ Fords are the least expensive of the crossings, with maximum load limits. December 2019 CASQA BMP Handbook 3 of 8 Construction www.casga.org Agreement No. 6574 Temporary Stream Crossing NS-4- • CCS crossing structures consist of clean, washed gravel and cellular confinement system blocks. CCS are appropriate for streams that would benefit from an influx of gravel; for example, salmonid streams, streams or rivers below reservoirs, and urban, channelized streams. Many urban stream systems are gravel -deprived due to human influences, such as dams, gravel mines, and concrete channels. • CCS allow designers to use either angular or naturally occurring rounded gravel, because the cells provide the necessary structure and stability. In fact, natural gravel is optimal for this technique, because of the habitat improvement it will provide after removal of the CCS. ■ A gravel depth of 6 to 12 in. for a CCS structure is sufficient to support most construction equipment. ■ An advantage of a CCS crossing structure is that relatively little rock or gravel is needed, because the CCS provides the stability. • Bridges are generally more expensive to design and construct but provide the least disturbance of the streambed and constriction of the waterway flows. Construction and Use • Stabilize construction roadways, adjacent work area, and stream bottom against erosion. ■ Construct during dry periods to minimize stream disturbance and reduce costs. in Construct at or near the natural elevation of the streambed to prevent potential flooding upstream of the crossing. in Install temporary erosion control BMPs in accordance with erosion control BMP fact sheets to minimize erosion of embankment into flow lines. • Any temporary artificial obstruction placed within flowing water should only be built from material, such as clean gravel or sandbags, that will not introduce sediment or silt into the watercourse. • Temporary water body crossings and encroachments should be constructed to minimize scour. Cobbles used for temporary water body crossings or encroachments should be clean, rounded river cobble. • Vehicles and equipment should not be driven, operated, fueled, cleaned, maintained, or stored in the wet or dry portions of a water body where wetland vegetation, riparian vegetation, or aquatic organisms may be destroyed. • The exterior of vehicles and equipment that will encroach on the water body within the project should be maintained free of grease, oil, fuel, and residues. • Drip pans should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than one hour. December 2019 CASQA BMP Handbook 4 of 8 Construction www.casga.org Agreement No. 6574 Tempiorary Stra '' a Disturbance or removal of vegetation should not exceed the minimum necessary to complete operations. Precautions should be taken to avoid damage to vegetation by people or equipment. Disturbed vegetation should be replaced with the appropriate soil stabilization measures. • Riparian vegetation, when removed pursuant to the provisions of the work, should be cut off no lower than ground level to promote rapid re -growth. Access roads and work areas built over riparian vegetation should be covered by a sufficient layer of clean river run cobble to prevent damage to the underlying soil and root structure. The cobble must be removed upon completion of project activities. • Conceptual temporary stream crossings are shown in the attached figures. Costs Caltrans Construction Cost index for temporary bridge crossings is $58-$122/ft2 (costs adjusted for inflation, 2016 dollars, by Tetra Tech Inc.). Inspection and Maintenance n Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. w Check for blockage in the channel, sediment buildup or trapped debris in culverts, blockage behind fords or under bridges. a Check for erosion of abutments, channel scour, riprap displacement, or piping in the soil. ® Check for structural weakening of the temporary crossings, such as cracks, and undermining of foundations and abutments. Remove sediment that collects behind fords, in culverts, and under bridges periodically. a Replace lost or displaced aggregate from inlets and outlets of culverts and cellular confinement systems. a Remove temporary crossing promptly when it is no longer needed. References California Bank and Shore Rock Slope Protection Design — Practitioners Guide and Field Evaluations of Riprap Methods, Caltrans Study No. F9oTL03, October 2000. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 5 of 8 Construction www.casqa.org Agreement No. 6574 NOTE� �urfoce f�ow of rood divert�d hy swo|e ond,/or dike Construction Agreement No. 6574 Templora�ry Streamil Crossing 4 7, ... . . .... t A December 2019 CASQA BMP Handbook 7 of 8 Construction www.casqa.org Agreement No. 6574 Temporary Stream, Crossing NS-4 1: 5 (V.- H) December 2019 CASQA BMP Handbook 8 of 8 Construction www.casqa.org Agreement No. 6574 Clear Water Dliver!sion NS-5 Description and Purpose Clear water diversion consists of a system of structures and measures that intercept clear surface water runoff upstream of a project, transport it around the work area, and discharge it downstream with minimal water quality degradation from either the project construction operations or the construction of the diversion. Clear water diversions are used in a waterway to enclose a construction area and reduce sediment pollution from construction work occurring in or adjacent to water. Structures commonly used as part of this system include diversion ditches, berms, dikes, slope drains, rock, gravel bags, wood, aqua barriers, cofferdams, filter fabric or turbidity curtains, drainage and interceptor swales, pipes, or flumes. Suitable Applications A clear water diversion is typically implemented where appropriate permits (16o1 Agreement) have been secured and work must be performed in a flowing stream or water body. • Clear water diversions are appropriate for isolating construction activities occurring within or near a water body such as streambank stabilization, or culvert, bridge, pier or abutment installation. They may also be used in combination with other methods, such as clear water bypasses and/or pumps. ■ Pumped diversions are suitable for intermittent and low flow streams. • Excavation of a temporary bypass channel or passing the flow through a heavy pipe (called a "flume") with a trench Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective Secondary Objective Targeted Constituents Sedimentmm,�.W.,rv.,�ww....�,.,.�.�,��,�.�mrvrvrvrv.ro.� Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If UserlSubscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version.. iT. 414"We Nth, 1:T OWK u'64Y December 2019 CASQA BMP Handbook 1 of 10 Construction www.casqa.org Agreement No. 6574 Clear Water Diversion excavated under it, is appropriate for the diversion of streams less than 20 ft wide, with flow rates less than ioo cfs. Clear water diversions incorporating clean washed gravel may be appropriate for use in salmonid spawning streams. Limitations • Diversion and encroachment activities will usually disturb the waterway during installation and removal of diversion structures. ■ Installation may require Regional Water Quality Control Board (RWQCB) 401 Certification, U.S. Army Corps of Engineers 404 permit and approval by California Department of Fish and Game. If numerical -based water quality standards are mentioned in any of these and other related permits, testing and sampling may be required. • Diversion and encroachment activities may constrict the waterway, which can obstruct flood flows and cause flooding or washouts. Diversion structures should not be installed without identifying potential impacts to the stream channel. • Diversion or isolation activities are not appropriate in channels where there is insufficient stream flow to support aquatic species in the area dewatered as a result of the diversion. • Diversion or isolation activities are inappropriate in deep water unless designed or reviewed by an engineer registered in California. • Diversion or isolation activities should not completely dam stream flow. ■ Dewatering and removal may require additional sediment control or water treatment. See NS-2, Dewatering Operations. • Not appropriate if installation, maintenance, and removal of the structures will disturb sensitive aquatic species of concern. Implementation General ■ Implement guidelines presented in EC-12, Streambank Stabilization to minimize impacts to streambanks. • Where working areas encroach on flowing streams, barriers adequate to prevent the flow of muddy water into streams should be constructed and maintained between working areas and streams. During construction of the barriers, muddying of streams should be held to a minimum. • Diversion structures must be adequately designed to accommodate fluctuations in water depth or flow volume due to tides, storms, flash floods, etc. • Heavy equipment driven in wet portions of a water body to accomplish work should be completely clean of petroleum residue, and water levels should be below the fuel tanks, gearboxes, and axles of the equipment unless lubricants and fuels are sealed such that inundation by water will not result in discharges of fuels, oils, greases, or hydraulic fluids, December 2019 CASQA B7 Handbook 2 of 10 Construction www.casqa.org Agreement No. 6574 Clear Water Diversion NS-5 • Excavation equipment buckets may reach out into the water for the purpose of removing or placing fill materials. Only the bucket of the crane/ excavator/backhoe may operate in a water body. The main body of the crane/excavator/backhoe should not enter the water body except as necessary to cross the stream to access the work site. • Stationary equipment such as motors and pumps located within or adjacent to a water body, should be positioned over drip pans. • When any artificial obstruction is being constructed, maintained, or placed in operation, sufficient water should, at all times, be allowed to pass downstream to maintain aquatic life. • Equipment should not be parked below the high-water mark unless allowed by a permit. ■ Disturbance or removal of vegetation should not exceed the minimum necessary to complete operations. Precautions should be taken to avoid damage to vegetation by people or equipment. Disturbed vegetation should be replaced with the appropriate erosion control measures. ■ Riparian vegetation approved for trimming as part of the project should be cut off no lower than ground level to promote rapid re -growth. Access roads and work areas built over riparian vegetation should be covered by a sufficient layer of clean river run cobble to prevent damage to the underlying soil and root structure. The cobble should be removed upon completion of project activities. w Drip pans should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than 1 hour. ■ Where possible, avoid or minimize diversion and encroachment impacts by scheduling construction during periods of low flow or when the stream is dry. Scheduling should also consider seasonal releases of water from dams, fish migration and spawning seasons, and water demands due to crop irrigation. • Construct diversion structures with materials free of potential pollutants such as soil, silt, sand, clay, grease, or oil. Temporary Diversions and Encroachments • Construct diversion channels in accordance with EC-9, Earth Dikes and Drainage Swales. • In high flow velocity areas, stabilize slopes of embankments and diversion ditches using an appropriate liner, in accordance with EC-7, Geotextiles and Mats, or use rock slope protection. ■ Where appropriate, use natural streambed materials such as large cobbles and boulders for temporary embankment and slope protection, or other temporary soil stabilization methods. • Provide for velocity dissipation at transitions in the diversion, such as the point where the stream is diverted to the channel and the point where the diverted stream is returned to its natural channel. See also EC-1o, Velocity Dissipation Devices. December 2019 CASQA BMP Handbook 3 of 10 Construction www.casqa.org Agreement No. 6574 Temporary Dry Construction Areas • When dewatering behind temporary structures to create a temporary dry construction area, such as cofferdams, pass pumped water through a sediment -settling device, such as a portable tank or settling basin, before returning water to the water body. See also NS-2, Dewatering Operations. • Any substance used to assemble or maintain diversion structures, such as form oil, should be non -toxic and non -hazardous. • Any material used to minimize seepage underneath diversion structures, such as grout, should be non -toxic, non -hazardous, and as close to a neutral pH as possible. Comparison ofDiuersion and Isolation Techniques: • Gravel bags are relatively inexpensive, but installation and removal can be labor intensive. It is also difficult to dewater the isolated area. Sandbags should not be used for this technique in rivers or streams, as sand should never be put into or adjacent to a stream, even if encapsulated in geotextile. • Gravel Bag Berms (SE-6) used in conjunction with an impermeable membrane are cost effective and can be dewatered relatively easily. If spawning gravel is used, the impermeable membrane can be removed from the stream, and the gravel can be spread out and left as salmonid spawning habitat if approved in the permit. Only clean, washed gravel should be used for both the gravel bag and gravel berm techniques. ■ Cofferdams are relatively expensive, but frequently allow full dewatering. Also, many options now available are relatively easy to install. • Sheet pile enclosures are a much more expensive solution but do allow full dewatering. This technique is not well suited to small streams, but can be effective on large rivers or lakes, and where staging and heavy equipment access areas are available. • K-rails are an isolation method that does not allow full dewatering, but can be used in small to large watercourses, and in fast -water situations. • A relatively inexpensive isolation method is filter fabric isolation. This method involves placement of gravel bags or continuous berms to `key -in' the fabric, and subsequently staking the fabric in place. This method should be used in relatively calm water and can be used in smaller streams. Note that this is not a dewatering method, but rather a sediment isolation method. ■ Turbidity curtains should be used where sediment discharge to a stream is unavoidable. They can also be used for in -stream construction, when dewatering an area is not required. • When used in watercourses or streams, cofferdams must be used in accordance with permit requirements. • Manufactured diversion structures should be installed following manufacturer's specifications. December 2019 CASQA BMP Handbook 4 of 10 Construction www.casqa.org Agreement No. 6574 C�lear Water Diversion NS-S a Filter fabric and turbidity curtain isolation installation methods can be found in the specific technique descriptions that follow. Filter Fabric Isolation Technique Definition and Purpose A filter fabric isolation structure is a temporary structure built into a waterway to enclose a construction area and reduce sediment pollution from construction work in or adjacent to water. This structure is composed of filter fabric, gravel bags, and steel t-posts. Appropriate Applications Filter fabric maybe used for construction activities such as streambank stabilization, or culvert, bridge, pier or abutment installation. It may also be used in combination with other methods, such as clean water bypasses and/or pumps. w Filter fabric isolation is relatively inexpensive. This method involves placement of gravel bags or continuous berms to `key -in' the fabric, and subsequently staking the fabric in place. If spawning gravel is used, all other components of the isolation can be removed from the stream, and the gravel may be spread out and left as salmonid spawning habitat if approved in the permit. Whether spawning gravel or other types of gravel are used, only clean washed gravel should be used as infill for the gravel bags or continuous berm. w This method should be used in relatively calm water and can be used in smaller streams. This is not a dewatering method, but rather a sediment isolation method. wWater levels inside and outside the fabric curtain must be about the same, as differential heads will cause the curtain to collapse. Limitations w Do not use if the installation, maintenance and removal of the structures will disturb sensitive aquatic species of concern. • Filter fabrics are not appropriate for projects where dewatering is necessary. • Filter fabrics are not appropriate to completely dam stream flow. Design and Installation a For the filter fabric isolation method, a non -woven or heavy-duty fabric is recommended over standard silt fence. Using rolled geotextiles allows non-standard widths to be used. a Anchor filter fabric with gravel bags filled with clean, washed gravel. Do not use sand. If a bag should split open, the gravel can be left in the stream, where it can provide aquatic habitat benefits. If a sandbag splits open in a watercourse, the sand could cause a decrease in water quality, and could bury sensitive aquatic habitat. Another anchor alternative is a continuous berm, made with the Continuous Berm Machine. This is a gravel -filled bag that can be made in very long segments. The length of the berms is usually limited to 18 ft for ease of handling (otherwise, it gets too heavy to move). December 2019 CASQA BMP Handbook 5 of 10 Construction www.casqa.org Agreement No. 6574 Clear Wa-ter Diversion NS-5 al Place the fabric on the bottom of the stream, and place either a bag of clean, washed gravel or a continuous berm over the bottom of the silt fence fabric, such that a bag -width of fabric lies on the stream bottom. The bag should be placed on what will be the outside of the isolation area. • Pull the fabric up and place a metal t-post immediately behind the fabric, on the inside of the isolation area; attach the silt fence to the post with three diagonal nylon ties. • Continue placing fabric as described above until the entire work area has been isolated, staking the fabric at least every 6 ft. Inspection and Maintenance • Immediately repair any gaps, holes or scour. • Remove and properly dispose of sediment buildup. • Remove BMP upon completion of construction activity. Recycle or reuse if applicable. a Revegetate areas disturbed by BMP removal if needed Turbidity Curtain Isolation Technique Definition and Purpose A turbidity curtain is a fabric barrier used to isolate the near shore work area. The barriers are intended to confine the suspended sediment. The curtain is a floating barrier, and thus does not prevent water from entering the isolated area; rather, it prevents suspended sediment from getting out. Appropriate Applications Turbidity curtains should be used where sediment discharge to a stream is unavoidable. They are used when construction activities adjoin quiescent waters, such as lakes, ponds, and slow flowing rivers. The curtains are designed to deflect and contain sediment within a limited area and provide sufficient retention time so that the sediment particles will fall out of suspension. Limitations Turbidity curtains should not be used in flowing water; they are best suited for use in ponds, lakes, and very slow -moving rivers. Turbidity curtains should not be placed across the width of a channel. ■ Removing sediment that has been deflected and settled out by the curtain may create a discharge problem through the resuspension of particles and by accidental dumping by the removal equipment. Design and Installation • Turbidity curtains should be oriented parallel to the direction of flow. • The curtain should extend the entire depth of the watercourse in calm -water situations. • In wave conditions, the curtain should extend to within i ft of the bottom of the watercourse, such that the curtain does not stir up sediment by hitting the bottom repeatedly. If it is December 2019 CASQA BMP Handbook 6 of 10 Construction www.casqa.org Agreement No. 6574 Clear Water Diversion NS-5 desirable for the curtain to reach the bottom in an active -water situation, a pervious filter fabric may be used for the bottom 1 ft. • The top of the curtain should consist of flexible flotation buoys, and the bottom should be held down by a load line incorporated into the curtain fabric. The fabric should be a brightly colored impervious mesh. • The curtain should be held in place by anchors placed at least every too ft. ■ First, place the anchors, then tow the fabric out in a furled condition, and connect to the anchors. The anchors should be connected to the flotation devices, and not to the bottom of the curtain. Once in place, cut the furling lines, and allow the bottom of the curtain to sink. • Consideration must be given to the probable outcome of the removal procedure. It must be determined if it will create more of a sediment problem through re -suspension of the particles or by accidental dumping of material during removal. It is recommended that the soil particles trapped by the turbidity curtain only be removed if there has been a significant change in the original contours of the affected area in the watercourse. • Particles should always be allowed to settle for a minimum of 6 to 12 hours prior to their removal or prior to removal of the turbidity curtain. Maintenance and Inspection: • The curtain should be inspected for holes or other problems, and any repairs needed should be made promptly. s Allow sediment to settle for 6 to 12 hours prior to removal of sediment or curtain. This means that after removing sediment, wait an additional 6 to 12 hours before removing the curtain. • To remove, install furling lines along the curtain, detach from anchors, and tow out of the water. K-rail River Isolation Definition and Purpose This temporary sediment control or stream isolation method uses K-rails to form the sediment deposition area, or to isolate the in -stream or near -bank construction area. Barriers are placed end -to -end in a pre -designed configuration and gravel -filled bags are used at the toe of the barrier and at their abutting ends to seal and prevent movement of sediment beneath or through the barrier walls. Appropriate Applications The K-rail isolation can be used in streams with higher water velocities than many other isolation techniques. a This technique is also useful at the toe of embankments and cut or fill slopes. December 5019 CASQA BMP Handbook 7 of 10 Construction www.casqa.org Agreement No. 6574 WaterDiversion Limitations The K-rail method should not be used to dewater a project site, as the barrier is not watertight. Design and Installation • To create a floor for the K-rail, move large rocks and obstructions. Place washed gravel and gravel -filled bags to create a level surface for K-rails to sit. Washed gravel should always be used. • Place the bottom two K-rails adjacent to each other, and parallel to the direction of flow; fill the center portion with gravel bags. Then place the third K-rail on top of the bottom two. There should be sufficient gravel bags between the bottom K-rails such that the top rail is supported by the gravel. Place plastic sheeting around the K-rails, and secure at the bottom with gravel bags. • Further support can be added by pinning and cabling the K-rails together. Also, large riprap and boulders can be used to support either side of the K-rail, especially where there is strong current. Inspection and Maintenance: ■ The barrier should be inspected, and any leaks, holes, or other problems should be addressed immediately. • Sediment should be allowed to settle for at least 6 to 12 hours prior to removal of sediment, and for 6 to 12 hours prior to removal of the barrier. Stream Diversions The selection of which stream diversion technique to use will depend upon the type of work involved, physical characteristics of the site, and the volume of water flowing through the project. Advantages of a Pumped Diversion • Downstream sediment transport can be nearly eliminated. • Dewatering of the work area is possible. • Pipes can be moved around to allow construction operations. • The dams can serve as temporary access to the site. • Increased flows can be managed by adding more pumping capacity. Disadvantages of a Pumped Diversion • Flow volume is limited by pump capacity. A pumped diversion requires 24-hour monitoring of pumps. vi Sudden rain could overtop dams. ■ Erosion at the outlet. December 2019 CASQA BMP Handbook 8 of 10 Construction www.casqa.org Agreement No. 6574 Cle.ar Water: Diversion NS-5 il m Minor in -stream disturbance is required to install and remove dams. Advantages of Excavated Channels and Flumes • Excavated channels isolate work from water flow and allow dewatering. ■ Excavated channels can handle larger flows than pumps. Disadvantages of Excavated Channels and Flumes • Bypass channel or flume must be sized to handle flows, including possible floods. • Channels must be protected from erosion. • Flow diversion and re -direction with small dams involves in -stream disturbance and mobilization of sediment. Design and Installation • Installation guidelines will vary based on existing site conditions and type of diversion used. • Pump capacity must be sufficient for design flow. • A standby pump is required in case a primary pump fails. Dam materials used to create dams upstream and downstream of diversion should be erosion resistant; materials such as steel plate, sheet pile, sandbags, continuous berms, inflatable water bladders, etc., would be acceptable. When constructing a diversion channel, begin excavation of the channel at the proposed downstream end, and work upstream. Once the watercourse to be diverted is reached and the excavated channel is stable, breach the upstream end and allow water to flow down the new channel. Once flow has been established in the diversion channel, install the diversion weir in the main channel; this will force all water to be diverted from the main channel. Inspection and Maintenance • Pumped diversions require 24-hour monitoring of pumps. • Inspect embankments and diversion channels for damage to the linings, accumulating debris, sediment buildup, and adequacy of the slope protection. Remove debris and repair linings and slope protection as required. Remove holes, gaps, or scour. • Upon completion of work, the diversion or isolation structure should be removed, and flow should be redirected through the new culvert or back into the original stream channel. Recycle or reuse if applicable. • Revegetate areas disturbed by BMP removal if needed. Costs Costs of clear water diversion vary considerably and can be very high. December 2019 CASQA BMP Handbook 9 of 10 Construction www.casqa.org Agreement No. 6574 Clear Water l Inspection and Maintenance • Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Refer to BMP-specific inspection and maintenance requirements. References California Bank and Shore Rock Slope Protection Design — Practitioners Guide and Field Evaluations of Riprap Methods, Caltrans Study No. F9oTL03, October 2000. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 10 of 10 Construction www.casqa.org Agreement No. 6574 111micit Connection/ Discharge ., Description and Purpose Procedures and practices designed for construction contractors to recognize illicit connections or illegally dumped or discharged materials on a construction site and report incidents. Suitable Applications This best management practice (BMP) applies to all construction projects. Illicit connection/discharge and reporting is applicable anytime an illicit connection or discharge is discovered„ or illegally dumped material is found on the construction site. Limitations Illicit connections and illegal discharges or dumping, for the purposes of this BMP, refer to discharges and dumping caused by parties other than the contractor. If pre-existing hazardous materials or wastes are known to exist onsite, they should be identified in the SWPPP and handled as set forth in the SWPPP. Implementation Planning Review the SWPPP. Pre-existing areas of contamination should be identified and documented in the SWPPP. ■ Inspect site before beginning the job for evidence of illicit connections, illegal dumping or discharges. Document any pre-existing conditions and notify the owner. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater 0 Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ❑x Secondary Objective Targeted Constituents Sediment .,�„,.m....�,......�..,...�. Nutrients 0 Trash Q Metals Q Bacteria Q Oil and Grease 0 Organics Q Potential Alternatives None ��,M�.........� If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casga.org Agreement No. 6574 Ulicit Connectioln/Discharge • Inspect site regularly during project execution for evidence of illicit connections, illegal dumping or discharges. a Observe site perimeter for evidence for potential of illicitly discharged or illegally dumped material, which may enter the job site. Identification of Illicit Connections and Illegal Dumping or Discharges • General — unlabeled and unidentifiable material should be treated as hazardous. • Solids - Look for debris, or rubbish piles. Solid waste dumping often occurs on roadways with light traffic loads or in areas not easily visible from the traveled way. • Liquids - signs of illegal liquid dumping or discharge can include: - Visible signs of staining or unusual colors to the pavement or surrounding adjacent soils - Pungent odors coming from the drainage systems - Discoloration or oily substances in the water or stains and residues detained within ditches, channels or drain boxes - Abnormal water flow during the dry weather season ■ Urban Areas - Evidence of illicit connections or illegal discharges is typically detected at storm drain outfall locations or at manholes. Signs of an illicit connection or illegal discharge can include: - Abnormal water flow during the dry weather season - Unusual flows in sub drain systems used for dewatering - Pungent odors coming from the drainage systems - Discoloration or oily substances in the water or stains and residues detained within ditches, channels or drain boxes - Excessive sediment deposits, particularly adjacent to or near active offsite construction projects Rural Areas - Illicit connections or illegal discharges involving irrigation drainage ditches are detected by visual inspections. Signs of an illicit discharge can include: - Abnormal water flow during the non -irrigation season - Non-standard junction structures - Broken concrete or other disturbances at or near junction structures Reporting Notify the owner of any illicit connections and illegal dumping or discharge incidents at the time of discovery. For illicit connections or discharges to the storm drain system, notify the local stormwater management agency. For illegal dumping, notify the local law enforcement agency. Cleanup and Removal The responsibility for cleanup and removal of illicit or illegal dumping or discharges will vary by location. Contact the local stormwater management agency for further information. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 '' C / Mischa"' Costs Costs to look for and report illicit connections and illegal discharges and dumping are low. The best way to avoid costs associated with illicit connections and illegal discharges and dumping is to keep the project perimeters secure to prevent access to the site, to observe the site for vehicles that should not be there, and to document any waste or hazardous materials that exist onsite before taking possession of the site. Inspection and Maintenance ■ Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. a Inspect the site regularly to check for any illegal dumping or discharge. a Prohibit employees and subcontractors from disposing of non -job -related debris or materials at the construction site. Notify the owner of any illicit connections and illegal dumping or discharge incidents at the time of discovery. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92O05; USEPA, April 1992. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 wr otable Water/Irrigation NS-7 Description and Purpose Potable Water/Irrigation consists of practices and procedures to manage the discharge of potential pollutants generated (luring discharges from irrigation water lines, landscape irrigation, lawn or garden ,vrateri'ng, planmA and unplanned. discharges from potable water sources, water line lushing, and hydrant flushing. Suitable Applications Implement this BMP whenever potable water or irrigation water discharges occur at or enter a construction site. Limitations None identified. Implementation a Direct water from offsite sources around or through a construction site, where feasible, in a way that minimizes contact with the construction site. Discharges from water line flushing should be reused for landscaping purposes where feasible. a Shut off the water source to broken lines, sprinklers, or valves as soon as possible to prevent excess water flow. Protect downstream stormwater drainage systems and watercourses from water pumped or bailed from trenches excavated to repair water lines. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Objective 19 Secondary Objective Targeted Constituents Sediment Q Nutrients Q Trash Metals Q Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version., December 2019 CASQA 7P Handbook 1 of 2 Construction www.casga.org Agreement No. 6574 PotableIrrigation Inspect irrigated areas within the construction limits for excess watering. Adjust watering times and schedules to ensure that the appropriate amount of water is being used and to minimize runoff. Consider factors such as soil structure, grade, time of year, and type of plant material in determining the proper amounts of water for a specific area. Costs Cost to manage potable water and irrigation are low and generally considered to be a normal part of related activities. Inspection and Maintenance • Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. m Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Repair broken water lines as soon as possible. ■ Inspect irrigated areas regularly for signs of erosion and/or discharge. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 2 of 2 Construction www.casqa.org Agreement No. 6574 Description and Purpose Vehicle and equipment cleaning procedures and practices eliminate or reduce the discharge of pollutants to stormwater from vehicle and equipment cleaning operations. Procedures and practices indude but are not limited to: using offisite faeflities; washing in designated, contained areas only; eliniinating discharges to the storni drain by infiltrating the wash water; arid training eniployees, and subcontractors in proper cleaning procedures. Suitable Applications These procedures are suitable on all construction sites where vehicle and equipment cleaning is performed. Limitations Even phosphate -free, biodegradable soaps have been shown to be toxic to fish before the soap degrades. Sending vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit. Implementation Other options to washing equipment onsite include contracting with either an offsite or mobile commercial washing business. These btisinesses imy be better equipped to handle and dispose of the wash waters properly, Performing this work of can also be economical by eliminating the need for a separate washing operation onsite. If washing operations are to take place onsite, then: Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Primary Objective Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and Tooter below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 • Use phosphate -free, biodegradable soaps. • Educate employees and subcontractors on pollution prevention measures. • Do not permit steam cleaning onsite. Steam cleaning can generate significant pollutant concentrates. • Cleaning of vehicles and equipment with soap, solvents or steam should not occur on the project site unless resulting wastes are fully contained and disposed of. Resulting wastes should not be discharged or buried and must be captured and recycled or disposed according to the requirements of WM-1o, Liquid Waste Management or WM-6, Hazardous Waste Management, depending on the waste characteristics. Minimize use of solvents. Use of diesel for vehicle and equipment cleaning is prohibited. d All vehicles and equipment that regularly enter and leave the construction site must be cleaned offsite. • When vehicle and equipment washing and cleaning must occur onsite, and the operation cannot be located within a structure or building equipped with appropriate disposal facilities, the outside cleaning area should have the following characteristics: - Located away from storm drain inlets, drainage facilities, or watercourses - Paved with concrete or asphalt and bermed to contain wash waters and to prevent runon and runoff - Configured with a sump to allow collection and disposal of wash water - No discharge of wash waters to storm drains or watercourses - Used only when necessary a When cleaning vehicles and equipment with water: - Use as little water as possible. High-pressure sprayers may use less water than a hose and should be considered - Use positive shutoff valve to minimize water usage - Facility wash racks should discharge to a sanitary sewer, recycle system or other approved discharge system and must not discharge to the storm drainage system, watercourses, or to groundwater Costs Cleaning vehicles and equipment at an offsite facility may reduce overall costs for vehicle and equipment cleaning by eliminating the need to provide similar services onsite. When onsite cleaning is needed, the cost to establish appropriate facilities is relatively low on larger, long - duration projects, and moderate to high on small, short -duration projects. December 2019 SQA BMP Handbook CA2 of 3 Construction www.casqa.org Agreement No. 6574 Inspection and Maintenance a Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Inspection and maintenance is minimal, although some berm repair may be necessary. m Monitor employees and subcontractors throughout the duration of the construction project to ensure appropriate practices are being implemented. A Inspect sump regularly and remove liquids and sediment as needed. • Prohibit employees and subcontractors from washing personal vehicles and equipment on the construction site. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Swisher, R.D. Surfactant Biodegradation, Marcel Decker Corporation, 1987. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Vehicle an�d Equipment Fueling Description and Purpose Vehicle equipment fueling procedures and practices are designed to prevent fuel spills and leaks and reduce or eliminate contamination of stormwater. This can be accomplished by using offsite facilities, fueling in designated areas only, enclosing or covering stored f eel, implementing spill controls, and training employees and subcontractors in proper fueling procedures. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control Waste Management and WM Materials Pollution Control _._.. Legend: ........... _... Q Primary Objective ❑x Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Q Organics Suitable Applications Potential Alternatives�W These procedures are suitable on all construction sites where vehicle and equipment fueling takes place. None Limitations Onsite vehicle and equipment fueling should only be used,..m• where it is impractical to send vehicles and equipment offsite If User/Subscriber modifies this fact for fueling. Sending vehicles and equipment offsite should be sheet in any way, the CASQA name/logo and footer below must be done in conjunction with TC-1, Stabilized Construction removed from each page and not Entrance/ Exit. appear on the modified version. Implementation s Use offsite fueling stations as much as possible. These businesses are better equipped to handle fuel and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate fueling area at a site. ■ Discourage "topping -off' of fuel tanks. December 3019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 Vehicle nd uipn Fueling ■ Absorbent spill cleanup materials and spill kits should be available in fueling areas and on fueling trucks and should be disposed of properly after use. r Drip pans or absorbent pads should be used during vehicle and equipment fueling, unless the fueling is performed over an impermeable surface in a dedicated fueling area. • Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the adsorbent materials promptly and dispose of properly. • Avoid mobile fueling of mobile construction equipment around the site; rather, transport the equipment to designated fueling areas. With the exception of tracked equipment such as bulldozers and large excavators, most vehicles should be able to travel to a designated area with little lost time. ■ Train employees and subcontractors in proper fueling and cleanup procedures. • When fueling must take place onsite, designate an area away from drainage courses to be used. Fueling areas should be identified in the SWPPP. • Dedicated fueling areas should be protected from stormwater runon and runoff and should be located at least 50 ft away from downstream drainage facilities and watercourses. Fueling must be performed on level -grade areas. • Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills. ® Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff to control drips. Fueling operations should not be left unattended. • Use vapor recovery nozzles to help control drips as well as air pollution where required by Air Quality Management Districts (AQMD). • Federal, state, and local requirements should be observed for any stationary above ground storage tanks. Costs a All of the above measures are low cost except for the capital costs of above ground tanks that meet all local environmental, zoning, and fire codes. Inspection and Maintenance ® Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. s Vehicles and equipment should be inspected each day of use for leaks. Leaks should be repaired immediately, or problem vehicles or equipment should be removed from the project site. • Keep ample supplies of spill cleanup materials onsite. December 2019 CASQA MP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 Equipment Fueling 9 a Immediately clean up spills and properly dispose of contaminated soil and cleanup materials. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2319 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Description and Purpose Prevent or reduce the contaniinaticrra of storniivater resulting fronn vehicle and equipment maintenance by running, a "dry and clean site". The best option would be to perform maintenance activities at an offsite facility. If this option is not available then work should be performed in designated areas only, while providing cover for materials stored outside, checking for leaks and spills, and containing and cleaning up shills inirnediatel.y. Employees and subcontractors must be trained in proper procedures. Suitable Applications These procedures are suitable on all construction projects where an onsite yard area is necessary for storage and maintenance of heavy equipment and vehicles. Limitations Onsite vehicle and equipment maintenance should only be used where it is impractical to send vehicles and equipment offsite for maintenance and repair. Sending vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit. Outdoor vehicle or equipment maintenance is a potentially significant source of stormwater pollution. Activities that can contaminate stormwater include engine repair and service, changing or replacement of fluids, and outdoor equipment storage and parking (engine fluid leaks). For further information on vehicle or equipment servicing, see NS-8, Categories EC ry Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Objective ❑x Secondary Objective Targeted Constituents Sediment Nutrients 2 Trash Q Metals Bacteria Oil and Grease Q Organics [J1 Potential Alternatives None If User/Subscriber modifies this factmmrvW sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 Vehicle and Equipment Cleaning, and NS-9, Vehicle and Equipment Fueling. Implementation • Use offsite repair shops as much as possible. These businesses are better equipped to handle vehicle fluids and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate maintenance area. • If maintenance must occur onsite, use designated areas, located away from drainage courses. Dedicated maintenance areas should be protected from stormwater runon and runoff and should be located at least 50 ft from downstream drainage facilities and watercourses. • Drip pans or absorbent pads should be used during vehicle and equipment maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area. ■ Place a stockpile of spill cleanup materials where it will be readily accessible. • All fueling trucks and fueling areas are required to have spill kits and/or use other spill protection devices. m Use adsorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly. • Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately. to Keep vehicles and equipment clean; do not allow excessive build-up of oil and grease. • Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary containment and covers for these materials if stored onsite. • Train employees and subcontractors in proper maintenance and spill cleanup procedures. • Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than 1 hour. • For long-term projects, consider using portable tents or covers over maintenance areas if maintenance cannot be performed offsite. • Consider use of new, alternative greases and lubricants, such as adhesive greases, for chassis lubrication and fifth -wheel lubrication. ■ Properly dispose of used oils, fluids, lubricants, and spill cleanup materials. • Do not place used oil in a dumpster or pour into a storm drain or watercourse. • Properly dispose of or recycle used batteries. • Do not bury used tires. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 Repair leaks of fluids and oil immediately. Listed below is further information if you must perform vehicle or equipment maintenance onsite. Safer Alternative Products • Consider products that are less toxic or hazardous than regular products. These products are often sold under an "environmentally friendly" label. • Consider use of grease substitutes for lubrication of truck fifth -wheels. Follow manufacturers label for details on specific uses. ■ Consider use of plastic friction plates on truck fifth -wheels in lieu of grease. Follow manufacturers label for details on specific uses. Waste Reduction Parts are often cleaned using solvents such as trichloroethylene, trichloroethane, or methylene chloride. Many of these cleaners are listed in California Toxic Rule as priority pollutants. These materials are harmful and must not contaminate stormwater. They must be disposed of as a hazardous waste. Reducing the number of solvents makes recycling easier and reduces hazardous waste management costs. Often, one solvent can perform a job as well as two different solvents. Also, if possible, eliminate or reduce the amount of hazardous materials and waste by substituting non -hazardous or less hazardous materials. For example, replace chlorinated organic solvents with non -chlorinated solvents. Non -chlorinated solvents like kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check the list of active ingredients to see whether it contains chlorinated solvents. The "chlor" term indicates that the solvent is chlorinated. Also, try substituting a wire brush for solvents to clean parts. Recycling and Disposal Separating wastes allows for easier recycling and may reduce disposal costs. Keep hazardous wastes separate, do not mix used oil solvents, and keep chlorinated solvents (like,- trichloroethane) separate from non -chlorinated solvents (like kerosene and mineral spirits). Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans or other open containers lying around. Provide cover and secondary containment until these materials can be removed from the site. Oil filters can be recycled. Ask your oil supplier or recycler about recycling oil filters. Do not dispose of extra paints and coatings by dumping liquid onto the ground or throwing it into dumpsters. Allow coatings to dry or harden before disposal into covered dumpsters. Store cracked batteries in a non -leaking secondary container. Do this with all cracked batteries, even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Costs All of the above are low cost measures. Higher costs are incurred to setup and maintain onsite maintenance areas. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 Inspection and Maintenance al Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. • Keep ample supplies of spill cleanup materials onsite. • Maintain waste fluid containers in leak proof condition. • Vehicles and equipment should be inspected on each day of use. Leaks should be repaired immediately, or the problem vehicle(s) or equipment should be removed from the project site. • Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as needed. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Plile Driving Operationsi Description and Purpose The construction and retrofit of bridges and retaining walls often include driving piles for foundation support and shoring operations. Driven piles are typically constructed of precast concrete, steel, or timber. Driven sheet piles are also used for shoring and cofferdam construction. Proper control and use of equipment, materials, and waste products from pile driving operations will reduce or eliminate the discharge of potential pollutants to the storm drain system, watercourses, and waters of the United States. Suitable Applications These procedures apply to all construction sites near or adjacent to a watercourse or groundwater where permanent and temporary pile driving (impact and vibratory) takes place, including operations using pile shells as well as construction of cast -in -steel -shell and cast -in -drilled -hole piles. Limitations None identified. Implementation a Use drip pans or absorbent pads during vehicle and equipment operation, maintenance, cleaning, fueling, and storage. Refer to NS-8, Vehicle and Equipment Cleaning, NS-9, Vehicle and Equipment Fueling, and NS-1o, Vehicle and Equipment Maintenance. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Materials pollution Control Legend: Q Primary Objective ❑X Secondary Objective Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Q' Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 2 Construction www.casqa.org Agreement No. 6574 Pille DrivingOperations • Have spill kits and cleanup materials available at all locations of pile driving. Refer to WM- 4, Spill Prevention and Control. m Equipment that is stored or in use in streambeds, or on docks, barges, or other structures over water bodies should be kept leak free. • Park equipment over plastic sheeting or equivalent where possible. Plastic is not a substitute for drip pans or absorbent pads. The storage or use of equipment in streambeds or other bodies of water must comply with all applicable permits. ■ Implement other BMPs as applicable, such as NS-2, Dewatering Operations, WM-5, Solid Waste Management, WM-6, Hazardous Waste Management, and WM-io, Liquid Waste Management. • When not in use, store pile -driving equipment away from concentrated flows of stormwater, drainage courses, and inlets. Protect hammers and other hydraulic attachments from runon and runoff by placing them on plywood and covering them with plastic or a comparable material prior to the onset of rain. • Use less hazardous products, e.g., vegetable oil, when practicable. Costs All of the above measures can be low cost. Inspection and Maintenance m, Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Inspect equipment every day at startup and repair equipment as needed (i.e., worn or damaged hoses, fittings, and gaskets). Recheck equipment at shift changes or at the end of the day and scheduled repairs as needed. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 2 of 2 Construction www.casqa.org Agreement No. 6574 CuringConcrete Description and Purpose Concrete curing is used in the construction of structures such as bridges, retaining walls, pump houses, large slabs, and structured foundations. Concrete curing includes the use of both chemical and water methods. Concrete and its associated curing materials have basic chemical properties that can raise the pH of water to levels outside of the permitted range. Discharges of stormwater and non-stormwater exposed to concrete during curing may have a high pH and may contain chemicals, metals, and fines. The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Proper procedures and care should be taken when managing concrete curing materials to prevent thern from coning into contact ivitli stormwater flows„ which could result in a. higlr pH discharge. Suitable Applications Suitable applications include all projects where Portland Cement Concrete (PCC) and concrete curing chemicals are placed where they can be exposed to rainfall, runoff from other areas, or where runoff from the PCC will leave the site. Categories EC.. ......... .Erosion Control,�.�un,� .w ,.�.. SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Q Materials Pollution Control Legend: 0 Primary Category ❑x Secondary Category Targeted µConstituents Sediment Q Nutrients Trash Metals Q Bacteria Oil and Grease Q Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in anyway, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. Limitations im in Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations. I wm VmWJepw o��w�avww �Y,taruur IN December 2019 CASQA BMP Handbook 1 of 3 Construction www.casga.org Agreement No. 6574 Implementation Chemical Curing • Avoid over spray of curing compounds. • Minimize the drift by applying the curing compound close to the concrete surface. Apply an amount of compound that covers the surface but does not allow any runoff of the compound. • Use proper storage and handling techniques for concrete curing compounds. Refer to WM- 1, Material Delivery and Storage. • Protect drain inlets prior to the application of curing compounds. ■ Refer to WM-4, Spill Prevention and Control. Water Curing for Bridge Decks, Retaining Walls, and other Structures • Direct cure water away from inlets and watercourses to collection areas for evaporation or other means of removal in accordance with all applicable permits. See WM-8 Concrete Waste Management. • Collect cure water at the top of slopes and transport to a concrete waste management area in a non -erosive manner. See EC-9 Earth Dikes and Drainage Swales, EC-1o, Velocity Dissipation Devices, and EC-11, Slope Drains. • Utilize wet blankets or a similar method that maintains moisture while minimizing the use and possible discharge of water. Education •' Educate employees, subcontractors, and suppliers on proper concrete curing techniques to prevent contact with discharge as described herein. Arrange for the QSP or the appropriately trained contractor's superintendent or representative to oversee and enforce concrete curing procedures. Costs All of the above measures are generally low cost. Inspection and Maintenance ■ Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. a Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Sample non-stormwater discharges and stormwater runoff that contacts uncured and partially cured concrete as required by the General Permit. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 a Ensure that employees and subcontractors implement appropriate measures for storage, handling, and use of curing compounds. Inspect cure containers and spraying equipment for leaks. References Blue Print for a Clean Bay -Construction -Related Industries: Best Management Practices for Stormwater Pollution Prevention; Santa Clara Valley Non -Point Source Pollution Control Program,1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casga.org Agreement No. 6574 Concrete i i Description and Purpose Concrete finishing methods are used for bridge deck rehabilitation, paint removal, curing compound removal, and final surface finish appearances. Methods include sand blasting, shot blasting, grinding, or high-pressure water blasting, Stormwatter and non-st:orrnwater exposed to concrete finishing by-products may have a High pH and may contain chemicals, metals, and fines. Proper procedures and implementation of appropriate BMPs can minimize the impact that concrete -finishing methods may have on stormwater and non-stormwater discharges. The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Concrete and its associated curing materials have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these neater ials to prevent thern from corning into contact with storrwater flows, which could lead to e,xceedances of the General Permit requirements. Suitable Applications These procedures apply to all construction locations where concrete finishing operations are performed. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control WM Waste Management and Q Materials Pollution Control _.... ................. Legend: Q Primary Category 0 secondary Category Targeted Constituents Sediment Nutrients Trash Metals Q Bacteria Oil and Grease Organics Q Potential Alternatives None� If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. � wmiruvu:ww��pm,wwaww.°wmww'wwx. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casga.org Agreement No. 6574 Concrete Finishing NS-,13 Limitations Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations. Implementation • Collect and properly dispose of water from high-pressure water blasting operations. • Collect contaminated water from blasting operations at the top of slopes. Transport or dispose of contaminated water while using BNI Ps such as those for erosion control. Refer to EC-g, Earth Dikes and Drainage Swales, EC-1o, Velocity Dissipation Devices, and EC-1i, Slope Drains. • Direct waster from blasting operations away from inlets and watercourses to collection areas for infiltration or other means of removal (dewatering,). Refer to 1 5-2 Dewatering Operations. • Protect inlets during sandblasting operations. Refer to SE-1o, Storm Drain Inlet Protection. ■ Refer to WM-8, Concrete Waste Management for disposal of concrete debris. • Minimize the drift of dust and blast material as much as possible by keeping the blasting nozzle close to the surface. • When blast residue contains a potentially hazardous waste, refer to WM-6, Hazardous Waste Management. Education • Educate employees, subcontractors, and suppliers on proper concrete finishing techniques to prevent contact with discharge as described herein. • Arrange for the QSP or the appropriately trained contractor's superintendent or representative to oversee and enforce concrete finishing procedures. Costs These measures are generally of low cost. Inspection and Maintenance a Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Sample non-stormwater discharges and stormwater runoff that contacts concrete dust and debris as required by the General Permit. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casga.org Agreement No. 6574 Concrete Finishing NS-13 a Sweep or vacuum up debris from sandblasting at the end of each shift. a At the end of each work shift, remove and contain liquid and solid waste from containment structures, if any, and from the general work area. m Inspect containment structures for damage prior to use and prior to onset of forecasted rain. References Blueprint for a Clean Bay: Best Management Practices to Prevent Storinwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 279 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Material'Over Water NS-14 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WIVI Waste Management and Materials Pollution Control Legend: Primary Objective Secondary Objective Targeted Constituents Description and Purpose . . ........ . Procedures for the proper use, storage, and disposal of Sediment Nutrients materials and, equipment on barges, boats, ternporar IN construction pads, or similar locations filat minimize or Trash eliminate the discharge of potential pollutants to a watercourse. Metals Bacteria 571 Suitable Applications Oil and Grease Applies where materials and, equipment are Used on barges, Organics boats, docks, and other platforins over or adjacent to a watercourse including waters of the United States. These procedures should be implemented for construction materials Potential Alternatives and wastes (solid and liquid), soil or dredging materials, or any . .......... None other materials that may cause or contribute to exceedances of water quality standards. Limitations Dredge and fill activities are regulated by the US Army Corps of If User/Subscriber modifies this fact Engineers and regional Boards under Section 404/401 of the sheet in any way, the CASQA Clean Water Act. name/logo and footer below must be removed from each page and not Implementation appear on the modified version. a Refer to WM-1, Material Delivery and Storage and WM-4, Spill Prevention and Control. • Use drip pans and absorbent materials for equipment and vehicles and ensure that an adequate supply of spill clean up materials is available. • Drip pans should be placed under all vehicles and equipment placed on docks, barges, or other structures over December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 Mate�rialr water bodies when the vehicle or equipment is expected to be idle for more than 1 hour. • Maintain equipment in accordance with NS-1o, Vehicle and Equipment Maintenance. If a leaking line cannot be repaired, remove equipment from over the water. • Provide watertight curbs or toe boards to contain spills and prevent materials, tools, and debris from leaving the barge, platform, dock, etc. • Secure all materials to prevent discharges to receiving waters via wind. ■ Identify types of spill control measures to be employed, including the storage of such materials and equipment. Ensure that staff is trained regarding the use of the materials, deployment and access of control measures, and reporting measures. • In case of spills, contact the local Regional Board as soon as possible but within 48 hours. • Refer to WM-5, Solid Waste Management (non -hazardous) and WM-6, Hazardous Waste Management. Ensure the timely and proper removal of accumulated wastes • Comply with all necessary permits required for construction within or near the watercourse, such as Regional Water Quality Control Board, U.S. Army Corps of Engineers, Department of Fish and Game or and other local permitting. • Discharges to waterways should be reported to the Regional Water Quality Control Board immediately upon discovery. A written discharge notification must follow within 7 days. Follow the spill reporting procedures contained in SWPPP. Costs These measures are generally of low to moderate cost. Exceptions are areas for temporary storage of materials, engine fluids, or wastewater pump out. Inspection and Maintenance ■ Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. • Ensure that employees and subcontractors implement the appropriate measures for storage and use of materials and equipment. • Inspect and maintain all associated BMPs and perimeter controls to ensure continuous protection of the water courses, including waters of the United States. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 Material Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Description and Purpose Procedures to protect water bodies from debris and wastes associated with structure demolition or removal over or adjacent to watercourses. Suitable Applications Full bridge demolition and removal, partial bridge removal (barrier rail, edge of deck) associated with bridge widening projects, concrete channel removal, or any other structure removal that could potentially affect water quality. Limitations None identified. Implementation a Refer to NS-5, Clear Water Diversion, to direct water away from work areas. a Use attachments on construction equipment such as backhoes to catch debris from small demolition operations a Use covers or platforms to collect debris. a Platforms and covers are to be approved by the owner. a Stockpile accumulated debris and waste generated during demolition away from watercourses and in accordance with WM-3, Stockpile Management. a Ensure safe passage of wildlife, as necessary. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Q Management Control Waste Management and WM Materials Pollution Control .—........._-- Legend: .......... ......... - Q Primary Objective 0 Secondary Objective Targeted Constituents Sediment Q Nutrients Q Trash Q Metals Q Bacteria Q Oil and Grease Q Organics Q Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 2 Construction www.casqa.org Agreement No. 6574 Demolition Adjacent to Water Discharges to waterways shall be reported to the Regional Water Quality Control Board immediately upon discovery. A written discharge notification must follow within 7 days. Follow the spill reporting procedures in the SWPPP. For structures containing hazardous materials, i.e., lead paint or asbestos, refer to BMP WM-6, Hazardous Waste Management. For demolition work involving soil excavation around lead -painted structures, refer to WM-7, Contaminated Soil Management. Costs Cost may vary according to the combination of practices implemented. Inspection and Maintenance ■ Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. ■ Any debris -catching devices shall be emptied regularly. Collected debris shall be removed and stored away from the watercourse and protected from runon and runoff. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 279 CASQA BMP Handbook 2 of 2 Construction www.casqa.org Agreement No. 6574 Ternporary Bat,ch Plants NS-16 Description and Purpose The construction of roads, bridges, retaining walls, and other large structures in remote areas, often requires temporary batch plant facilities to manufacture Portland Cement Concrete (PCC) or asphalt cement (AC). Temporary batch plant facilities typically consist of silos eontaining fly ash, lime, and cement; heated tanks of liquid asphalt; sand and gravel material storage areas; mixing equipment; above ground storage tanks containing concrete additives and water; and designated areas for sand and gravel truck unloading, concrete truck loading, and concrete truck washout. Proper control and use of equipment, materials, and waste products from temporary batch plant facilities will reduce the discharge of potential pollutants to the storm drain system or watercourses, reduce air emissions, and mitigate noise impacts. The General Permit draft incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Many types of batch plant materials, including mortar, concrete, cement and block and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent therm frorn coming into contact with storinwater flows whichi-nay cause an exceedance of the General Permit requirements. Suitable Applications These procedures typically apply to construction sites where temporary batch plant facilities are used; however, some of the Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NIS Non-Stormwater Management Control Waste Management and WIVI Materials Pollution Control Legend: Primary Category secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 practices described are applicable to construction sites with general concrete use. Limitations The General Permit for discharges of stormwater associated with industrial activities (General Industrial Permit) maybe applicable to temporary batch plants. Specific permit requirements or mitigation measures such as Air Resources Board (ARB), Air Quality Management District (AQMD), Air Pollution Control District (APCD, Regional Water Quality Control Board (PWQCB), county ordinances and city ordinances may require alternative mitigation measures for tempoa ark° batch plants. Contact the local regulatory agencies to determine ifa permitis required. Implementation Planning • Temporary batch plants may be subject to the General Industrial Permit. To obtain a copy of this permit and the application forms, visit http://www.waterboards.ca.gov or contact the State Water Resources Control Board. • Proper planning, design, and construction of temporary batch plants should be implemented to minimize potential water quality, air pollution, and noise impacts associated with temporary batch plants. • BMPs and a Construction Site Monitoring Plan (CSMP) should be included in the pr•gject Storinivater° Pollution prevention Plan (SWPPP). BMPs should be implemented, inspected, and maintained in accordance with these plans. ® Temporary batch plants should be managed to comply with AQMD Statewide Registration Program and/or local AQMD Portable Equipment Registration requirements. ■ Construct temporary batch plants downwind of existing developments whenever possible. • Placement of access roads should be planned to mitigate water and air quality impacts. Layout and Design rr Temporary batch plants should be properly located and designed to mitigate water quality impacts to receiving water bodies, Batch plants should be located away from watercourses, drainage courses, and drain inlets, Batch plants should be located to minimize the potential for st:ormwater r-unon onto the site. • Temporarily batch plant facilities (including associated stationary equipment and stockpiles) should be located at least 300 ft from any recreational area, school, residence, or other structure not associated with the construction project. • Construct continuous interior AC or PCC berms around batch plant equipment (mixing equipment, silos, concrete drop points, conveyor belts, admixture tanks, etc.) to facilitate proper containment and cleanup of releases. Rollover or flip top curbs or dikes should be placed at ingress and egress points (5E-12, Temporary Silt Dike). • Direct runoff from the paved or unlaa\?ed portion of the batch plant into a sump and pipe to a liners washout area or dewatering tank. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casga.org Agreement No. 6574 Temporary! aaa Direct stormwater and non-stormwater runoff from unpaved portions of batch plant facility to catchment ponds or tanks. Construct and remove concrete washout facilities in accordance with WM-8, Concrete Waste Management. so Layout of a typical batch plant and associated BMP is located at the end of this BMP fact sheet. Operational Procedures ar Washout of concrete trucks should be conducted in a designated area in accordance with WM-8, Concrete Waste Management. a Do not dispose of concrete into drain inlets, the stormwater drainage system, or watercourses. a Washing of concrete mixing and transport equipment (including concrete truck washout) should occur in a designated area in accordance with WM-8, Concrete Waste Management. w Washing equipment, tools, or vehicles to remove PCC should be conducted in accordance with NS-7, Potable Water/Irrigation, NS-8, Vehicle and Equipment Cleaning, and WM-8, Concrete Waste Management. All dry material transfer points should be ducted through a fabric or cartridge type filter unless there are no visible emissions from the transfer point. a Equip all bulk storage silos, including auxiliary bulk storage trailers, with fabric or cartridge type filter(s). w Maintain silo vent filters in proper operating condition. aaa Equip silos and auxiliary bulk storage trailers with dust -tight service hatches. aaa Fabric dust collection system should be capable of controlling particulate matter in accordance with the California Air Resources Control Board and local Air Pollution Control District Regulations. as Fabric dust collectors (except for vent filters) should be equipped with an operational pressure differential gauge to measure the pressure drop across the filters. as All transfer points should be equipped with a wet suppression system to control fugitive particulate emissions unless there are no visible emissions. ■ All conveyors should be covered, unless the material being transferred results in no visible emissions. There should be no visible emissions beyond the property line, while the equipment is being operated. v Collect dust emissions from the loading of open -bodied trucks, at the drip point of dry batch plants, or dust emissions from the drum feed for central mix plants. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Equip silos and auxiliary bulk storage trailers with a visible and/or audible warning mechanism to warn operators that the silo or trailer is full. All open -bodied vehicles transporting material should be loaded with a final layer of wet sand and the truck should be covered with a tarp to reduce emissions. Tracking Control • Plant roads (batch truck and material delivery truck roads) and areas between stockpiles and conveyor hoppers should be stabilized (TC-2, Stabilized Construction Roadway), watered, treated with dust-suppressant chemicals (WE-1, Wind Erosion Control), or paved with a cohesive hard surface that can be repeatedly swept, maintained intact, and cleaned as necessary to control dust emissions. • Trucks should not track PCC from plants onto public roads. Use appropriate practices from TC-1, Stabilized Construction Entrance/Exit, to prevent tracking. Materials Storage w WM-1, Material Delivery and Storage, should be implemented at all batch plants using concrete components or compounds. An effective strategy is to cover and contain materials. WM-2, Material Use should be conducted in a way to minimize or eliminate the discharge of materials to storm drain system or watercourse. a Ensure that finer materials are not dispersed into the air during operations, such as unloading of cement delivery trucks. a Stockpiles should be covered and enclosed with perimeter sediment barriers per WM-3, Stockpile Management. Uncovered stockpiles should be sprayed with water and/or dust- suppressant chemicals as necessary to control dust emissions, unless the stockpiled material results in no visible emissions. An operable stockpile watering system should be onsite at all times. a Store bagged and boxed materials on pallets and cover or store in a completely enclosed storage area on non -working days and prior to rain. a Minimize stockpiles of demolished PCC by recycling them in a timely manner. Provide secondary containment for liquid materials (WM-1, Material Delivery and Storage, WM-1o, Liquid Waste Management). Containment should provide sufficient volume to contain precipitation from a 25-year storm plus lo% of the aggregate volume of all containers or plus 100% of the largest container, whichever is greater. ■ Handle solid and liquid waste in accordance with WM-5, Solid Waste Management, WM-1o, Liquid Waste Management, and WM-8, Concrete Waste Management. w Maintain adequate supplies of spill cleanup materials and train staff to respond to spills per WM-4, Spill Prevention and Control. x Immediately contain and clean up spilled cement and fly ash and contain. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casga.org Agreement No. 6574 Temporary Batch Equipment Maintenance Equipment should be maintained to prevent fluid leaks and spills per NS-9, Vehicle and Equipment Fueling, and NS-1o, Vehicle and Equipment Maintenance. a Maintain adequate supplies of spill cleanup materials and train staff to respond to spills per WM-4, Spill Prevention and Control. Incorporate other BMPs such as WM-5, Solid Waste Management, WM-6, Hazardous Waste Management, and WM-io, Liquid Waste Management. Costs Costs will vary depending on the size of the facility and combination of BMPs implemented. Inspection and Maintenance • Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. ■ Sample non-stormwater discharges and stormwater runoff that contacts cementitious materials or fly ash as required by the General Permit. • Inspect and repair equipment (for damaged hoses, fittings, and gaskets). ® Inspect and maintain a Stabilized Construction Entrance/Exit (TC-1) as needed. • Inspect and maintain stabilized haul roads as needed (TC-2, Stabilized Construction Roadway). • Inspect and maintain materials and waste storage areas as needed. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. IN December 5079 CASQA BMP Handbook 5 of 6 Construction www.casga.org Agreement No. 6574 TemporaryBatch Plants SiL 0ONTAl3L, PERIMETER SEDIMENT CONTROL OR M; TRAFFIC BARRIER AS APPLICABLE WASHWO ' N '° 11, rW wwaawww�ww I FLY ASH ' rm SILO 1 l` 11 CONCerm IA WASHOUT AREA NMI70MC o 1 .. 1' a-1 WNM.Z CONCIli[ w a cowRDeTE Lo all�iQ rN�woowwu�Numwioi�wwu�wuwmlaoiu��( rwirmrm�Nuwwwwmwr�fi iuw�uu���wmwwrrrmw�w�w�mwuww .,,�,e.. � MA ^TAENIINZE "`"" STAMNNI�RI 04TRANCE *I,,,, " 4,00W Y M .� rox 6U iSAND i w BILE "EifULIZED ADDTTN� (NENN 4, �* Z�„ »� YhAI"'EAIAL (VYM-l) ZTADILiED *O� UNLOADINd/STORAO! AT ENTZ�CE°A AlEA - (WNM-1, WM-3) NOW DIRECT OWNAt1wt OF II,AW PAV0 A AW0" W** O TO CATCHWNT P*NO 00* DEWAY101il KNOMANIMPOWRINGNiTN AICCOMANCI W"M NINE-2 MI Typical Temporary Batch December 2019 CASQA BMP Handbook 6 of 6 Construction www.casga.org Agreement No. 6574 Silt, Fence Description and Purpose A silt fence is made of a woven geotextile that has been entrenched, attached to supporting poles, and sometimes backed by a plastic or wire mesh for support. The silt fence detains water, promoting sedimentation of coarse sediment behind the fence. Silt fence does not retain soil fine particles like clays or silts. Suitable Applications Silt fences are suitable for perimeter control, placed below areas where sheet flows discharge from the site. They could also be used as interior controls below disturbed areas where runoff may occur in the form of sheet and rill erosion and around inlets within disturbed areas (Storm Drain Inlet Protection, SE-1o). Silt fences should not be used in locations where the flow is concentrated. Silt fences should always be used in combination with erosion controls. Suitable applications include: w At perimeter of a project (although they should not be installed up and down slopes). • Below the toe or down slope of exposed and erodible slopes. w Along streams and channels. • Around temporary spoil areas and stockpiles. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control Non-Stormwater NS Management Control Waste Management and W Materials Pollution M Control-.......... ................._ Legend: Q Primary Category Secondary Category Targeted Constituents Sediment (coarse sediment) MMm Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-5 Fiber Rolls SE-6 Gravel Bag Berm SE-12 Manufactured Linear Sediment Controls SE-13 Compost Socks and Berms SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 10 Construction www.casqa.org Agreement No. 6574 Silt Fence r Do not use in locations where ponded water may cause a flooding hazard. • Do not use silt fence to divert water flows or place across any contour line. • Improperly installed fences are subject to failure from undercutting, overtopping, or collapsing. IN Must be trenched and keyed in. • According to the State Water Board's CGP Review, Issue #2 (2014), silt fences reinforced with metal or plastic mesh should be avoided due to plastic pollution and wildlife concerns. • Not intended for use as a substitute for Fiber Rolls (SE-5), when fiber rolls are being used as a slope interruption device. ■ Do not use on slopes subject to creeping, slumping, or landslides. Implementation General A silt fence is a temporary sediment barrier consisting of woven geotextile stretched across and attached to supporting posts, trenched -in, and, depending upon the strength of fabric used, supported with plastic or wire mesh fence. Silt fences trap coarse sediment by intercepting and detaining sediment -laden runoff from disturbed areas in order to promote sedimentation behind the fence. The following layout and installation guidance can improve performance and should be followed: Silt fence should be used in combination with erosion controls up -slope in order to provide the most effective sediment control. IN Silt fence alone is not effective at reducing turbidity. (Barrett and Malina, 2004) IN Designers should consider diverting sediment laden water to a temporary sediment basin or trap. (EPA, 2012) • Use principally in areas where sheet flow occurs. • Install along a level contour, so water does not pond more than 1.5 ft. at any point along the silt fence. December 2019 CASQA BMP Handbook 2 of 10 Construction www.casga.org Agreement No. 6574 Smilt Fence SE-1 Provide sufficient room for runoff to pond behind the fence and to allow sediment removal equipment to pass between the silt fence and toes of slopes or other obstructions. About 120O ft.2 of ponding area should be provided for every acre draining to the fence. Efficiency of silt fences is primarily dependent on the detention time of the runoff behind the control. (Barrett and Malina, 2004) n The drainage area above any fence should not exceed a quarter of an acre. (Rule of Thumb- ioo-feet of silt fence per 10,000 ft.2 of disturbed area.) (EPA, 2012) The maximum length of slope draining to any point along the silt fence should be too ft. per ft of silt fence. a Turn the ends of the filter fence uphill to prevent stormwater from flowing around the fence. Leave an undisturbed or stabilized area immediately down slope from the fence where feasible. ■ Silt fences should remain in place until the disturbed area draining to the silt fence is permanently stabilized, after which, the silt fence fabric and posts should be removed and properly disposed. J-hooks, which have ends turning up the slope to break up long runs of fence and provide multiple storage areas that work like mini -retention areas, may be used to increase the effectiveness of silt fence. ■I Be aware of local regulations regarding the type and installation requirements of silt fence, which may differ from those presented in this fact sheet. Design and Layout In areas where high winds are anticipated the fence should be supported by a plastic or wire mesh. The geotextile fabric of the silt fence should contain ultraviolet inhibitors and stabilizers to provide longevity equivalent to the project life or replacement schedule. a Layout in accordance with the attached figures. a For slopes that contain a high number of rocks or large dirt clods that tend to dislodge, it maybe necessary to protect silt fence from rocks (e.g., rockfall netting) ensure the integrity of the silt fence installation. December 2019 CASQA BMP Handbook 3 of 10 Construction www.casqa.org Agreement No. 6574 Silt Standard vs. Heavy Duty Silt Fence Standard Silt Fence Generally applicable in cases where the area draining to fence produces moderate sediment loads. Heavy Duty Silt Fence Heavy duty silt fence usually has 1 or more of the following characteristics, not possessed by standard silt fence. o Fabric is reinforced with wire backing or additional support. o Posts are spaced closer than pre -manufactured, standard silt fence products. a Use is generally limited to areas affected by high winds. a Area draining to fence produces moderate sediment loads. Materials Standard Silt Fence ■ Silt fence material should be woven geotextile with a minimum width of 36 in. The fabric should conform to the requirements in ASTM designation D6461. ■ Wooden stakes should be commercial quality lumber of the size and shape shown on the plans. Each stake should be free from decay, splits or cracks longer than the thickness of the stake or other defects that would weaken the stakes and cause the stakes to be structurally unsuitable. • Staples used to fasten the fence fabric to the stakes should be not less than 1.75 in. long and should be fabricated from 15-gauge or heavier wire. The wire used to fasten the tops of the stakes together when joining two sections of fence should be 9 gauge or heavier wire. Galvanizing of the fastening wire will not be required. Heavy -Duty Silt Fence a Some silt fence has a wire backing to provide additional support, and there are products that may use prefabricated plastic holders for the silt fence and use metal posts instead of wood stakes. Installation Guidelines — Traditional Method Silt fences are to be constructed on a level contour. Sufficient area should exist behind the fence for ponding to occur without flooding or overtopping the fence. ■ A trench should be excavated approximately 6 in. wide and 6 in. deep along the line of the proposed silt fence (trenches should not be excavated wider or deeper than necessary for proper silt fence installation). • Bottom of the silt fence should be keyed -in a minimum of 12 in. • Posts should be spaced a maximum of 6 ft. apart and driven securely into the ground a minimum of 18 in. or 12 in. below the bottom of the trench. i When standard strength geotextile is used, a plastic or wire mesh support fence should be fastened securely to the upslope side of posts using heavy—duty wire staples at least 1 in. long. The mesh should extend into the trench. December 2019 CASQA BMP Handbook 4 of 10 Construction www.casqa.org Agreement No. 6574 Silt Fence SE-1 • When extra -strength geotextile and closer post spacing are used, the mesh support fence may be eliminated. • Woven geotextile should be purchased in a long roll, then cut to the length of the barrier. When joints are necessary, geotextile should be spliced together only at a support post, with a minimum 6 in. overlap and both ends securely fastened to the post. • The trench should be backfilled with native material and compacted. • Construct the length of each reach so that the change in base elevation along the reach does not exceed 1/3 the height of the barrier; in no case should the reach exceed 500 ft. • Cross barriers should be a minimum of 1/3 and a maximum of 1/2 the height of the linear barrier. m See typical installation details at the end of this fact sheet. December 2019 CASQA BMP Handbook 5 of 10 Construction www.casqa.org Agreement No. 6574 Silt Fence SE-1_ Installation Guidelines - Static Slicing Method a Static Slicing is defined as insertion of a narrow blade pulled behind a tractor, similar to a plow blade, at least io in. into the soil while at the same time pulling silt geotextile fabric into the ground through the opening created by the blade to the depth of the blade. Once the geotextile is installed, the soil is compacted using tractor tires. ■ This method will not work with pre -fabricated, wire backed silt fence. • Benefits: o Ease of installation (most often done with a 2-person crew). o Minimal soil disturbance. o Better level of compaction along fence, less susceptible to undercutting o Uniform installation. Limitations: o Does not work in shallow or rocky soils. o Complete removal of geotextile material after use is difficult. o Be cautious when digging near potential underground utilities. Costs a It should be noted that costs vary greatly across regions due to available supplies and labor costs. ra Average annual cost for installation using the traditional silt fence installation method (assumes 6 month useful life) is $7 per linear foot based on vendor research. Range of cost is $3.50 - $9.10 per linear foot. Inspection and Maintenance a BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. w Repair undercut silt fences. • Repair or replace split, torn, slumping, or weathered fabric. The lifespan of silt fence fabric is generally 5 to 8 months. • Silt fences that are damaged and become unsuitable for the intended purpose should be removed from the site of work, disposed, and replaced with new silt fence barriers. • Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches 1/3 of the barrier height. r Silt fences should be left in place until the upgradient area is permanently stabilized. Until then, the silt fence should be inspected and maintained regularly. December 2019 CASQA BMP Handbook 6 of 10 Construction www.casqa.org Agreement No. 6574 Silt Fence SE- 1 Remove silt fence when upgradient areas are stabilized. Fill and compact post holes and anchor trench, remove sediment accumulation, grade fence alignment to blend with adjacent ground, and stabilize disturbed area. References CGP Review #2, State Water Resources Control Board, 2014. Available online at: http: //www.waterboards.ca.gov/water_issues/programs/stormwater/docs/training/cgp_revie w_issue2.pdf. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Monitoring Data on Effectiveness of Sediment Control Techniques, Proceedings of World Water and Environmental Resources Congress, Barrett M. and Malina J. 2004. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group -Working Paper, USEPA, April 1992. Sedimentation and Erosion Control Practices, and Inventory of Current Practices (Draft), USEPA, 1990. Southeastern Wisconsin Regional Planning Commission (SWRPC). Costs of Urban Nonpoint Source Water Pollution Control Measures. Technical Report No. 31. Southeastern Wisconsin Regional Planning Commission, Waukesha, WI. 1991. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991. U.S. Environmental Protection Agency (USEPA). Stormwater Best Management Practices: Silt Fences. U.S. Environmental Protection Agency, Office of Water, Washington, DC, 2012. U.S. Environmental Protection Agency (USEPA). Stormwater Management for Industrial Activities: Developing Pollution Prevention Plans and Best Management Practices. U.S. Environmental Protection Agency, Office of Water, Washington, DC,1992. Water Quality Management Plan for the Lake Tahoe Region, Volume 11, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 7 of 10 Construction www.casqa.org Agreement No. 6574 M pp tj gL v V. b- kt .0 Ptt g, 03 yy Spa CA 0 31 -00 o In 0 L6 K ai Oi j LL■ 0 0 00 I -Y 0 CD N E a) u a) 0 Agreement No. 6574 I o wa Nn O O O ru Ca ce u Ln O Agreement No. 6574 Silt Fenice SE- 1 . ................ SWPPIP preparer Lo specify length of J-Piook based on anticipated Sediment lood :\Ov I,-" sek, Continuous Fence C, abric Pioce post odic -cent and bind at top with wir� V IM 3-HOOK December 2019 CASQA BMP Handbook 10 of 10 Construction www.casqa.org Agreement No. 6574 Sediment:, Description and Purpose A sediment basin is a temporary basin formed by excavation or by constructing an embankment so that sediment -laden runoff is temporarily detained under quiescent conditions, allowing sediment to settle out before the runoff is released. Sediment basin design guidance presented in this fact sheet is intended to provide options, methods, and techniques to optimize temporary sediment basin performance and basin sediment removal. Basin design guidance provided in this fact sheet is not intended to guarantee basin effluent compliance with numeric discharge limits (numeric action levels or numeric effluent limits for turbidity). Compliance with discharge limits requires a thoughtful approach to comprehensive BMP planning, implementation, and maintenance. Therefore, optimally designed and maintained sediment basins should be used in conjunction with a comprehensive system of BMPs that includes: ■ Diverting runoff from undisturbed areas away from the basin m Erosion control practices to minimize disturbed areas on - site and to provide temporary stabilization and interim sediment controls (e.g., stockpile perimeter control, check dams, perimeter controls around individual lots) to reduce the basin's influent sediment concentration. At some sites, sediment basin design enhancements may be required to adequately remove sediment. Traditional Categories EC Erosion Control SE Sediment Control Q TIC Tracking Control WE Wind Erosion Control Non-Stormwater NS Management Control Waste Management and WM Materials Pollution Control ..........._........._...n Legend: Q Primary Category 0 Secondary Category Targeted Constituents Sediment Q Nutrients Trash Q Metals Bacteria Oil and Grease Organics Potential Alternatives SE-3 Sediment Trap (for smaller areas) If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. 'W 4 9m 1 N 4 nab � 41YA?04u144Y III a December 2019 CASQA BMP Handbook 1 of 18 Construction www.casga.org Agreement No. 6574 Sediment Basin (a.k.a. "physical") enhancements such as alternative outlet configurations or flow deflection baffles increase detention time and other techniques such as outlet skimmers preferentially drain flows with lower sediment concentrations. These "physical" enhancement techniques are described in this fact sheet. To further enhance sediment removal particularly at sites with fine soils or turbidity sensitive receiving waters, some projects may need to consider implementing Active Treatment Systems (ATS) whereby coagulants and flocculants are used to enhance settling and removal of suspended sediments. Guidance on implementing ATS is provided in SE-11. Suitable Applications Sediment basins may be suitable for use on larger projects with sufficient space for constructing the basin. Sediment basins should be considered for use: ■ Where sediment -laden water may enter the drainage system or watercourses ■ On construction projects with disturbed areas during the rainy season • At the outlet of disturbed watersheds between 5 acres and 75 acres and evaluated on a site by site basis • Where post construction detention basins are required • In association with dikes, temporary channels, and pipes used to convey runoff from disturbed areas Limitations Sediment basins must be installed only within the property limits and where failure of the structure will not result in loss of life, damage to homes or buildings, or interruption of use or service of public roads or utilities. In addition, sediment basins are attractive to children and can be very dangerous. Local ordinances regarding health and safety must be adhered to. If fencing of the basin is required, the type of fence and its location should be shown in the SWPPP and in the construction specifications. • As a general guideline, sediment basins are suitable for drainage areas of 5 acres or more, but not appropriate for drainage areas greater than 75 acres. However, the tributary area should be evaluated on a site by site basis. • Sediment basins may become an "attractive nuisance" and care must be taken to adhere to all safety practices. If safety is a concern, basin may require protective fencing. • Sediment basins designed according to this fact sheet are only effective in removing sediment down to about the silt size fraction. Sediment -laden runoff with smaller size fractions (fine silt and clay) may not be adequately treated unless chemical (or other appropriate method) treatment is used in addition to the sediment basin. • Basins with a height of 25 ft or more or an impounding capacity of 5o ac-ft or more must obtain approval from California Department of Water Resources Division of Safety of Dams (lip; www.water.ca_,,ov dar .saiew). December 2019 CASQA BMP Handbook 2 of 18 Construction www.casqa.org Agreement No. 6574 BasinSediment a Water that stands in sediment basins longer than 96 hours may become a source of mosquitoes (and midges), particularly along perimeter edges, in shallow zones, in scour or below -grade pools, around inlet pipes, along low -flow channels, and among protected habitats created by emergent or floating vegetation (e.g. cattails, water hyacinth), algal mats, riprap, etc. Basins require large surface areas to permit settling of sediment. Size may be limited by the available area. Implementation General A sediment basin is a controlled stormwater release structure formed by excavation or by construction of an embankment of compacted soil across a drainage way, or other suitable location. It is intended to trap sediment before it leaves the construction site. The basin is a temporary measure expected to be used during active construction in most cases and is to be maintained until the site area is permanently protected against erosion or a permanent detention basin is constructed. Sediment basins are suitable for nearly all types of construction projects. Whenever possible, construct the sediment basins before clearing and grading work begins. Basins should be located at the stormwater outlet from the site but not in any natural or undisturbed stream. A typical application would include temporary dikes, pipes, and/or channels to convey runoff to the basin inlet. Many development projects in California are required by local ordinances to provide a stormwater detention basin for post -construction flood control, desilting, or stormwater pollution control. A temporary sediment basin may be constructed by rough grading the post - construction control basins early in the project. Sediment basins if properly designed and maintained can trap a significant amount of the sediment that flows into them. However, traditional basins do not remove all inflowing sediment. Therefore, they should be used in conjunction with erosion control practices such as temporary seeding, mulching, diversion dikes, etc., to reduce the amount of sediment flowing into the basin. Planning To improve the effectiveness of the basin, it should be located to intercept runoff from the largest possible amount of disturbed area. Locations best suited for a sediment basin are generally in lower elevation areas of the site (or basin tributary area) where site drainage would not require significant diversion or other means to direct water to the basin but outside jurisdictional waterways. However, as necessary, drainage into the basin can be improved by the use of earth dikes and drainage swales (see BMP EC-9).. The basin should not be located where its failure would result in the loss of life or interruption of the use or service of public utilities or roads. Construct before clearing and grading work begins when feasible. a Do not locate the basin in a jurisdictional stream. December 2019 CASQA BMP Handbook Construction 3of18 www.casqa.org Agreement No. 6574 Sediment«. • Basin sites should be located where failure of the structure will not cause loss of life, damage to homes or buildings, or interruption of use or service of public roads or utilities. m Basins with a height of 25 ft or more or an impounding capacity of 5o ac-ft must obtain approval from the Division of Dam Safety. Local dam safety requirements maybe more stringent. • Limit the contributing area to the sediment basin to only the runoff from the disturbed soil areas. Use temporary concentrated flow conveyance controls to divert runoff from undisturbed areas away from the sediment basin. • The basin should be located: (1) by excavating a suitable area or where a low embankment can be constructed across a swale, (2) where post -construction (permanent) detention basins will be constructed, and (3) where the basins can be maintained on a year-round basis to provide access for maintenance, including sediment removal and sediment stockpiling in a protected area, and to maintain the basin to provide the required capacity. Design When designing a sediment basin, designers should evaluate the site constraints that could affect the efficiency of the BMP. Some of these constraints include: the relationship between basin capacity, anticipated sediment load, and freeboard, available footprint for the basin, maintenance frequency and access, and hydraulic capacity and efficiency of the temporary outlet infrastructure. Sediment basins should be designed to maximize sediment removal and to consider sediment load retained by the basin as it affects basin performance. Three Basin Design Options (Part A) are presented below along with a Typical Sediment/Detention Basin Design Methodology (Part B). Regardless of the design option that is selected, designers also need to evaluate the sediment basin capacity with respect to sediment accumulation (See "Step 3. Evaluate the Capacity of the Sediment Basin") and should incorporate approaches identified in "Step 4. Other Design Considerations" to enhance basin performance. A) Basin Design Options: Option 1: Design sediment basin(s) using the standard equation: A= — 1.2Q K (Eq. 1) Where: A, = Minimum surface area for trapping soil particles of a certain size VS = Settling velocity of the design particle size chosen (Vs = 0.00028 ft/s for a design particle size of o.o1 mm at 68°F) 1.2 = Factor of safety recommended by USEPA to account for the reduction in basin efficiency caused due to turbulence and other non ideal conditions. December 2019 CASQA BMP Handbook 4 of 18 Construction www.casqa.org Agreement No. 6574 Sed"Iment Bassin Q = CIA (Eq.2) Where Q = Peak basin influent flow rate measured in cubic feet per second (ft3/s) C = Runoff coefficient (unitless) I = Peak rainfall intensity for the to -year, 6-hour rain event (in/hr) A = Area draining into the sediment basin in acres The design particle size should be the smallest soil grain size determined by wet sieve analysis, or the fine silt sized (o.ol mm [or 0.0004 in.]) particle, and the Vs used should be loo percent of the calculated settling velocity. This sizing basin method is dependent on the outlet structure design or the total basin length with an appropriate outlet. If the designer chooses to utilize the outlet structure to control the flow duration in the basin, the basin length (distance between the inlet and the outlet) should be a minimum of twice the basin width; the depth should not be less than 3 ft nor greater than 5 ft for safety reasons and for maximum efficiency (2 ft of sediment storage, 2 ft of capacity). If the designer chooses to utilize the basin length (with appropriate basin outlet) to control the flow duration in the basin, the basin length (distance between the inlet and the outlet) should be a specifically designed to capture t00% of the design particle size; the depth should not be less than 3 ft nor greater than 5 ft for safety reasons and for maximum efficiency (2 ft of sediment storage, 2 ft of capacity). Basin design guidance provided herein assumes standard water properties (e.g., estimated average water temperature, kinematic viscosity, etc.) as a basis of the design. Designers can use an alternative design (Option 3) with site specific water properties as long as the design is as protective as Option 1. The design guidance uses the peak influent flow rate to size sediment basins. Designers can use an alternative design (Option 3) with site specific average flow rates as long as the design is as protective as Option i. The basin should be located on the site where it can be maintained on a year-round basis and should be maintained on a schedule to retain the 2 ft of capacity. Option 2: Design pursuant to local ordinance for sediment basin design and maintenance, provided that the design efficiency is as protective or more protective of water quality than Option 1. Option 3: The use of an equivalent surface area design or equation provided that the design efficiency is as protective or more protective of water quality than Option 1. December 2019 CASQA BMP Handbook 5 of 18 Construction www.casqa.org Agreement No. 6574 B) Typical Sediment/Detention Basin Design Methodology: Design of a sediment basin requires the designer to have an understanding of the site constraints, knowledge of the local soil (e.g., particle size distribution of potentially contributing soils), drainage area of the basin, and local hydrology. Designers should not assume that a sediment basin for location A is applicable to location B. Therefore, designers can use this factsheet as guidance but will need to apply professional judgment and knowledge of the site to design an effective and efficient sediment basin. The following provides a general overview of typical design methodologies: Step 1. Hydrologic Design w Evaluate the site constraints and assess the drainage area for the sediment basin. Designers should consider on- and off -site flows as well as changes in the drainage area associated with site construction/disturbance. To minimize additional construction during the course of the project, the designer should consider identifying the maximum drainage area when calculating the basin dimensions. ■ If a local hydrology manual is not available, it is recommended to follow standard rational method procedures to estimate the flow rate. The references section of this factsheet provides a reference to standard hydrology textbooks that can provide standard methodologies. If local rainfall depths are not available, values can be obtained from standard precipitation frequency maps from NOAA (downloaded from htt wwww.wr c.dri.eclll c nf,re .titnnl). Step 2. Hydraulic Design Calculate the surface area required for the sediment basin using Equation 1. In which the flow rate is estimated for a 10-yr 6-hr event using rational method procedure listed in local hydrology manual and Vs is estimated using Stokes Law presented in Equation 3. V = 2.81d2 (Eq•3) Where VS = Settling velocity in feet per second at 68 o F d = diameter of sediment particle in millimeters (smallest soil grain size determined by wet sieve analysis or fine silt (0.01 mm [or 0.0004 in.]) In general, the basin outlet design requires an iterative trial and error approach that considered the maximum water surface elevation, the elevation versus volume (stage - storage) relationship, the elevation verses basin outflow (a.k.a.-discharge) relationship, and the estimated inflow hydrograph. To adequately design the basins to settle sediment, the outlet configuration and associated outflow rates can be estimated by numerous methodologies. The following provides some guidance for design the basin outlet: ■ An outlet should have more than one orifice. An outlet design typically utilizes multiple horizontal rows of orifices (approximately 3 or more) with at least 2 orifices per row (see Figures 1 and 2 at the end of this fact sheet). December 2019 CASQA BMP Handbook 6 of 18 Construction www.casqa.org Agreement No. 6574 Sediment a Orifices can vary in shape. ni Select the appropriate orifice diameter and number of perforations per row with the objective of minimizing the number of rows while maximizing the detention time. • The diameter of each orifice is typically a maximum of 3-4 inches and a minimum of 0.25-0.5 inches. • If a rectangular orifice is used, it is recommended to have minimum height of 0.5 inches and a maximum height of 6 inches. • Rows are typically spaced at three times the diameter center to center vertically with a minimum distance of approximately 4 inches on center and a maximum distance of i foot on center. • To estimate the outflow rate, each row is calculated separately based on the flow through a single orifice then multiplied by the number of orifices in the row. This step is repeated for each of the rows. Once all of the orifices are estimated, the total outflow rate versus elevation (stage -discharge curve) is developed to evaluate the detention time within the basin. ■ Flow through a single orifice can be estimated using an Equation 4: Q = BCA(2gH)"s (Eq•4) Where Q = Outflow rate in ft3/s C" = Orifice coefficient (unitless) A = Area of the orifice (ft2) g = acceleration due to gravity (ft3/s) H = Head above the orifice (ft) B = Anticipated Blockage or clogging factor (unitless), It is dependent on anticipated sediment and debris load, trash rack configuration etc, so the value is dependent on design engineer's professional judgment and/or local requirements (B is never greater than 1 and a value of 0.5 is generally used) ■ Care must be taken in the selection of orifice coefficient ("C ""); o.6o is most often recommended and used. However, based on actual tests, Young and Graziano (1.989), "Outlet Hydraulics of Extended Detention Facilities for Northern Virginia Planning District Commission", recommends the following: ■ C" = o.66 for thin materials; where the thickness is equal to or less than the orifice diameter, or • C' = o.8o when the material is thicker than the orifice diameter ■ If different sizes of orifices are used along the riser then they have to be sized such that not more than 50 percent of the design storm event drains in one-third of the drawdown time (to provide adequate settling time for events smaller than the design storm event) December 2019 CASQA BMP Handbook 7 of 18 Construction www.casqa.org Agreement No. 6574 and the entire volume drains within 96 hours or as regulated by the local vector control agency. If a basin fails to drain within 96 hours, the basin must be pumped dry. • Because basins are not maintained for infiltration, water loss by infiltration should be disregarded when designing the hydraulic capacity of the outlet structure. ■ Floating Outlet Skimmer: The floating skimmer (see Figure 3 at the end of this fact sheet is an alternative outlet configuration (patented) that drains water from upper portion of the water column. This configuration has been used for temporary and permanent basins and can improve basin performance by eliminating bottom orifices which have the potential of discharging solids. Some design considerations for this alternative outlet device includes the addition of a sand filter or perforated under drain at the low point in the basin and near the floating skimmer. These secondary drains allow the basin to fully drain. More detailed guidelines for sizing the skimmer can be downloaded from htt : I/www.fairclothskimmencom /. Hold and Release Valve: An ideal sediment/detention basin would hold all flows to the design storm level for sufficient time to settle solids, and then slowly release the storm water. Implementing a reliable valve system for releasing detention basins is critical to eliminate the potential for flooding in such a system. Some variations of hold and release valves include manual valves, bladder devices or electrically operated valves. When a precipitation event is forecast, the valve would be close for the duration of the storm and appropriate settling time. When the settling duration is met (approximately 24 or 48 hours), the valve would be opened and allow the stormwater to be released at a rate that does not resuspend settled solids and in a non -erosive manner. If this type of system is used the valve should be designed to empty the entire basin within 96 hours or as stipulated by local vector control regulations. Step 3. Evaluate the Capacity of the Sediment Basin a Typically, sediment basins do not perform as designed when they are not properly maintained or the sediment yield to the basin is larger than expected. As part of a good sediment basin design, designers should consider maintenance cycles, estimated soil loss and/or sediment yield, and basin sediment storage volume. The two equations below can be used to quantify the amount of soil entering the basin. The Revised Universal Soil Loss Equation (RUSLE, Eq.S) can be used to estimate annual soil loss and the Modified Universal Soil Equation (MUSLE, Eq.6) can be used to estimate sediment yield from a single storm event. A=RxKxLSxCxP (Eq.S) Y=95(Oxgj"'xKxLSxCxP (Eq.6) Where: A = annual soil loss, tons/acre-year R = rainfall erosion index, in ioo ft. Tons/acre.in/hr. December 2019 CASQA BMP Handbook 8 of 18 Construction www.casqa.org Agreement No. 6574 OrdBasin K = soil erodibility factor, tons/acre per unit of R LS = slope length and steepness factor (unitless) C = vegetative cover factor (unitless) P = erosion control practice factor (unitless) Y = single storm sediment yield in tons Q = runoff volume in acre-feet qp = peak flow in cfs a Detailed descriptions and methodologies for estimating the soil loss can be obtained from standard hydrology text books (See References section). Determination of the appropriate equation should consider construction duration and local environmental factors (soils, hydrology, etc.). For example, if a basin is planned for a project duration of 1 year and the designer specifies one maintenance cycle, RUSLE could be used to estimate the soil loss and thereby the designer could indicate that the sediment storage volume would be half of the soil loss value estimated. As an example, for use of MUSLE, a project may have a short construction duration thereby requiring fewer maintenance cycles and a reduced sediment storage volume. MUSLE would be used to estimate the anticipated soil loss based on a specific storm event to evaluate the sediment storage volume and appropriate maintenance frequency. m The soil loss estimates are an essential step in the design, and it is essential that the designer provide construction contractors with enough information to understand maintenance frequency and/or depths within the basin that would trigger maintenance. Providing maintenance methods, frequency and specification should be included in design bid documents such as the SWPPP Site Map. a Once the designer has quantified the amount of soil entering the basin, the depth required for sediment storage can be determined by dividing the estimated sediment loss by the surface area of the basin. Step 4. Other Design Considerations a Consider designing the volume of the settling zone for the total storm volume associated with the 2-year event or other appropriate design storms specified by the local agency. This volume can be used as a guide for sizing the basin without iterative routing calculations. The depth of the settling zone can be estimated by dividing the estimated 2-yr storm volume by the surface area of the basin. n The basin volume consists of two zones: - A sediment storage zone at least 1 ft deep. - A settling zone at least 2 ft deep. December 2019 CASQA BMP Handbook 9 of 18 Construction www.casqa.org Agreement No. 6574 Sediment - The basin depth must be no less than 3 ft (not including freeboard). m Proper hydraulic design of the outlet is critical to achieving the desired performance of the basin. The outlet should be designed to drain the basin within 24 to 96 hours (also referred to as "drawdown time"). The 24-hour limit is specified to provide adequate settling time; the 96-hour limit is specified to mitigate vector control concerns. • Confirmation of the basin performance can be evaluated by routing the design storm (lo-yr 6-hr, or as directed by local regulations) through the basin based on the basin volume (stage - storage curve) and the outlet design (stage -discharge curve based on the orifice configuration or equivalent outlet design). • Sediment basins, regardless of size and storage volume, should include features to accommodate overflow or bypass flows that exceed the design storm event. - Include an emergency spillway to accommodate flows not carried by the principal spillway. The spillway should consist of an open channel (earthen or vegetated) over undisturbed material (not fill) or constructed of a non -erodible riprap (or equivalent protection) on fill slopes. - The spillway control section, which is a level portion of the spillway channel at the highest elevation in the channel, should be a minimum of 20 ft in length. • Rock, vegetation or appropriate erosion control should be used to protect the basin inlet, outlet, and slopes against erosion. e The total depth of the sediment basin should include the depth required for sediment storage, depth required for settling zone and freeboard of at least i foot or as regulated by local flood control agency for a flood event specified by the local agency. • The basin alignment should be designed such that the length of the basin is more than twice the width of the basin; the length should be determined by measuring the distance between the inlet and the outlet. If the site topography does not allow for this configuration baffles should be installed so that the ratio is satisfied. If a basin has more than one inflow point, any inflow point that conveys more than 30 percent of the total peak inflow rate has to meet the required length to width ratio. • An alternative basin sizing method proposed by Fifield (2004) can be consulted to estimate an alternative length to width ratio and basin configuration. These methods can be considered as part of Option 3 which allows for alternative designs that are protective or more protective of water quality. Baffles (see Figure 4 at the end of this fact sheet) can be considered at project sites where the existing topography or site constraints limit the length to width ratio. Baffles should be constructed of earthen berms or other structural material within the basin to divert flow in the basin, thus increasing the effective flow length from the basin inlet to the outlet riser. Baffles also reduce the change of short circuiting and allows for settling throughout the basin. December 2019 CASQA BMP Handbook 10 of 18 Construction www.casqa.org Agreement No. 6574 d "Iment Basin SE-2 Baffles are typically constructed from the invert of the basin to the crest of the emergency spillway (i.e., design event flows are meant to flow around the baffles and flows greater than the design event would flow over the baffles to the emergency spillway). Use of other materials for construction of basin baffles (such as silt fence) may not be appropriate based on the material specifications and will require frequent maintenance (maintain after every storm event). Maintenance may not be feasible when required due to flooded conditions resulting from frequent (i.e., back to back) storm events. Use of alternative baffle materials should not deviate from the intended purpose of the material, as described by the manufacturer. Sediment basins are best used in conjunction with erosion controls. ■ Basins with an impounding levee greater than 4.5 ft tall, measured from the lowest point to the impounding area to the highest point of the levee, and basins capable of impounding more than 35,O0O ft3, should be designed by a Registered Civil Engineer. The design should include maintenance requirements, including sediment and vegetation removal, to ensure continuous function of the basin outlet and bypass structures. A forebay, constructed upstream of the basin, may be provided to remove debris and larger particles. w The outflow from the sediment basin should be provided with velocity dissipation devices (see BMP EC-1o) to prevent erosion and scouring of the embankment and channel. a The principal outlet should consist of a corrugated metal, high density polyethylene (HDPE), or reinforced concrete riser pipe with dewatering holes and an anti -vortex device and trash rack attached to the top of the riser, to prevent floating debris from flowing out of the basin or obstructing the system. This principal structure should be designed to accommodate the inflow design storm. a A rock pile or rock -filled gabions can serve as alternatives to the debris screen, although the designer should be aware of the potential for extra maintenance involved should the pore spaces in the rock pile clog. ri The outlet structure should be placed on a firm, smooth foundation with the base securely anchored with concrete or other means to prevent floatation. Attach riser pipe (watertight connection) to a horizontal pipe (barrel). Provide anti -seep collars on the barrel. a Cleanout level should be clearly marked on the riser pipe. Installation a Securely anchor and install an anti -seep collar on the outlet pipe/riser and provide an emergency spillway for passing major floods (see local flood control agency). x Areas under embankments must be cleared and stripped of vegetation. December 2019 CASQA BMP Handbook 11 of 18 Construction www.casqa.org Agreement No. 6574 Sediment Basin SE-2 Chain link fencing should be provided around each sediment basin to prevent unauthorized entry to the basin or if safety is a concern. Costs The cost of a sediment basin is highly variable and is dependent of the site configuration. To decrease basin construction costs, designers should consider using existing site features such as berms or depressed area to site the sediment basin. Designers should also consider potential savings associated with designing the basin to minimize the number of maintenance cycles and siting the basin in a location where a permanent BMP (e.g., extended detention basin) is required for the project site. Inspection and Maintenance in BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level and as required by local requirements. It is recommended that at a minimum, basins be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Examine basin banks for seepage and structural soundness. u Check inlet and outlet structures and spillway for any damage or obstructions. Repair damage and remove obstructions as needed. ■ Check inlet and outlet area for erosion and stabilize if required. ® Check fencing for damage and repair as needed. ■ Sediment that accumulates in the basin must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when sediment accumulation reaches one- half the designated sediment storage volume. Sediment removed during maintenance should be managed properly. The sediment should be appropriately evaluated and used or disposed of accordingly. Options include: incorporating sediment into earthwork on the site (only if there is no risk that sediment is contaminated); or off -site export/disposal at an appropriate location (e.g., sediment characterization and disposal to an appropriate landfill) ■ Remove standing water from basin within 96 hours after accumulation. ■ If the basin does not drain adequately (e.g., due to storms that are more frequent or larger than the design storm or other unforeseen site conditions), dewatering should be conducted in accordance with appropriate dewatering BMPs (see NS-2) and in accordance with local permits as applicable. • To minimize vector production: - Remove accumulation of live and dead floating vegetation in basins during every inspection. - Remove excessive emergent and perimeter vegetation as needed or as advised by local or state vector control agencies. December 2019 CASQA BMP Handbook 12 of 18 Construction www.casga.org Agreement No. 6574 Sediment Basin SE-2 References A Current Assessment of Urban Best Management Practices: Techniques for Reducing Nonpoint Source Pollution in the Coastal Zones, Metropolitan Washington Council of Governments, March 1992. Draft -Sedimentation and Erosion Control, an Inventory of Current Practices, USEPA. April 1990. U.S. Environmental Protection Agency (USEPA). Erosion and Sediment Control, Surface Mining in the Eastern U.S., U.S. Environmental Protection Agency, Office of Water, Washington, DC,Washington, D.C., 1976. Fifield, J.S. Designing for Effective Sediment and Erosion Control on Construction Sites. Forester Press, Santa Barbara, CA. 2004. Goldman S.J., Jackson K. and Bursztynsky T.A. Erosion and Sediment Control Handbook. McGraw-Hill Book Company, 1986. U.S. Environmental Protection Agency (USEPA). Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters. EPA 84o-B-9-002. U.S. Environmental Protection Agency, Office of Water, Washington, DC, 1993• Guidelines for the Design and Construction of Small Embankment Dams, Division of Safety of Dams, California Department of Water Resources, March 1986. Haan C.T., Barfield B.J. and Hayes J.C. Design Hydrology and Sedimentology for Small Catchments. Academic Press.1994• Inlet/Outlet Alternatives for Extended Detention Basins. State of California Department of Transportation (Caltrans), 2001. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• McLean, J., 2000. Mosquitoes in Constructed Wetlands: A Management Bugaboo? In T.R. Schueler and H.K. Holland [eds.], The Practice of Watershed Protection. pp. 29-33. Center for Watershed Protection, Ellicott City, MD, 2000. Metzger, M.E., D. F. Messer, C. L. Beitia, C. M. Myers, and V. L. Kramer. The Dark Side of Stormwater Runoff Management: Disease Vectors Associated with Structural BMPs, 2002. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Water, Work Group -Working Paper, USEPA, April 1992. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. December 2019 CASQA BMP Handbook 13 of 18 Construction www.casqa.org Agreement No. 6574 Sediment Basin SE-2 Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Water Quality Management Plan for the Lake Tahoe Region, Volume II Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. Young, G.K. and Graziano, F., Outlet Hydraulics of Extended Detention Facilities for Northern Virginia Planning District Commission,1989. December 2019 CASQA BMP Handbook 14 of 18 Construction www.casqa.org Agreement No. 6574 SedimentBas"in SE-2 FIGURE 1: TYPICAL TEMPORARY SEDIMENT BASIN _........................ _........................_. MULTIPLE ORIFICE DEwSwIwGN, NOT TO SCALE December 2019 CASQA BMP Handbook 15 of 18 Construction www.casqa.org Agreement No. 6574 Sed�imen�t Basmin SE-2 ...... . ....... ....... FIGURE 2: MULTIPLE ORIFICE OUTLETRISER NOT TO SCALE December 2019 CASQA BMP Handbook 16 of 18 Construction www.casqa.org Agreement No. 6574 Sediment Basuin SE-2 PROFILE N,QU$-:" 1 THE MOST IMPORTANT DESIGN PARAMETER IS THE CONTROL OF ORIFICE SIZE, 104CH CAN CONTROL DESIRED -D-EWATERING TWE-THE LONGER THE DEWATERING TIME, THE BMEER THE QUAUTY OF WATER DISCHARGED FROM THE SEDWEENT BASIN, 2, DESIGN BY W. FAACLOTH ? PXi ENT #5,820.751). 3 RQUIRE iS MEANT TO C014VEY CONCEPT ONLY SVES/P.ATERiALS SPECIFIED DURiNG DETAILED oi!SIGN a OUTLET END: FLOAT CONNFCTION TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN FLEXIBLE JOINT OUT U-7 PIPE -(W� ETRK-NIEW FIGU.R,E,: TYPICAL SKIMMER NOT TO SCALE VENT PIPE PVC PIPE INLET END ORIFICE INSIDE SCREEN AND ACCESSIBLE THROUGH DOOR December 2019 CASQA BIVIP Handbook 17 of 18 Construction www.casqa.org Agreement No. 6574 Sediment Basin SE-2 EARTHEN BAFFLE (TYP.) STABILIZED INLET— \ ELEVATION VAR�Es­ SECT A -A' MAX, WATER _X—SURFACE ELEVATION _y CLEVATION VARI", WMIRIM. M190 NOTE: 1. RAFFLES ARE TO BE CONSTRUCTED TO MEET 714h KVQkJIRFA.' LkNCIW 10 W01H fWzJQS. Z. 'REST OF "rHE fi>VFLES SHOULD fiat, LEVEL WHH OR JUST BELOW THE CREST OF THE EIVERCENCY SPILLWAY. TOP OF WJ FILE RiSER —EMBANKMENT 51DE :SLOPEE5 3; 1 (H;V) MAX OUITLET PROTECTION EMERGENCY SPILLWAY FIGLWE 4aypicAL,rFuPORARY SEDIMENT BASIN WITH BAFFLES NOT TO SCALE December 2019 CASQA BMP Handbook 18 of 18 Construction www.casqa.org Agreement No. 6574 Sedimentr Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective 0 Secondary Objective Targeted Constituents Description and Purpose Sediment Q A sediment trap is a containment area where sediment -laden Nutrients runoff is temporarily detained under quiescent conditions, Trash allowing sediment to settle out or before the runoff is Metals discharged by gravity flow. Sediment traps are formed by excavating or constructing an earthen embankment across a Bacteria waterway or low drainage area. Oil and Grease Organics Trap design guidance provided in this fact sheet is not intended to guarantee compliance with numeric discharge limits (numeric action levels or numeric effluent limits for turbidity). potential Alternatives �Mwp Compliance with discharge limits requires a thoughtful SE-2 Sediment Basin (for larger approach to comprehensive BMP planning, implementation, areas) and maintenance. Therefore, optimally designed and maintained sediment traps should be used in conjunction with a comprehensive system of BMPs. Suitable Applications If User/Subscriber modifies this fact Sediment traps should be considered for use: sheet in any way, the CASQA name/logo and footer below must be • At the perimeter of the site at locations where sediment- removed from each page and not laden runoff is discharged offsite. appear on the modified version. • At multiple locations within the project site where sediment control is needed. Around or upslope from storm drain inlet protection measures. Sediment traps maybe used on construction projects where the drainage area is less than 5 acres. Traps would be „,API 1A ,4 December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 placed where sediment -laden stormwater may enter a storm drain or watercourse. SE-2, Sediment Basins, must be used for drainage areas greater than 5 acres. a As a supplemental control, sediment traps provide additional protection for a water body or for reducing sediment before it enters a drainage system. Limitations • Requires large surface areas to permit infiltration and settling of sediment. • Not appropriate for drainage areas greater than 5 acres. • Only removes large and medium sized particles and requires upstream erosion control. • Attractive and dangerous to children, requiring protective fencing. • Conducive to vector production. • Should not be located in live streams. Implementation Design A sediment trap is a small temporary ponding area, usually with a gravel outlet, formed by excavation or by construction of an earthen embankment. Its purpose is to collect and store sediment from sites cleared or graded during construction. It is intended for use on small drainage areas with no unusual drainage features and projected for a quick build -out time. It should help in removing coarse sediment from runoff. The trap is a temporary measure with a design life of approximately six months to one year and is to be maintained until the site area is permanently protected against erosion by vegetation and/or structures. Sediment traps should be used only for small drainage areas. If the contributing drainage area is greater than 5 acres, refer to SE-2, Sediment Basins, or subdivide the catchment area into smaller drainage basins. Sediment usually must be removed from the trap after each rainfall event. The SWPPP should detail how this sediment is to be disposed, such as in fill areas onsite, or removal to an approved offsite dump. Sediment traps used as perimeter controls should be installed before any land disturbance takes place in the drainage area. Sediment traps are usually small enough that a failure of the structure would not result in a loss of life, damage to home or buildings, or interruption in the use of public roads or utilities. However, sediment traps are attractive to children and can be dangerous. The following recommendations should be implemented to reduce risks: a Install continuous fencing around the sediment trap or pond. Consult local ordinances regarding requirements for maintaining health and safety. it Restrict basin side slopes to 3:1 or flatter. Sediment trap size depends on the type of soil, size of the drainage area, and desired sediment removal efficiency (see SE-2, Sediment Basin). As a rule of thumb, the larger the basin volume December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Seddimenta the greater the sediment removal efficiency. Sizing criteria are typically established under the local grading ordinance or equivalent. The runoff volume from a 2-year storm is a common design criterion for a sediment trap. The sizing criteria below assume that this runoff volume is 0.042 acre-ft/acre (0.5 in. of runoff). While the climatic, topographic, and soil type extremes make it difficult to establish a statewide standard, the following criteria should trap moderate to high amounts of sediment in most areas of California: • Locate sediment traps as near as practical to areas producing the sediment. A Trap should be situated according to the following criteria: (1) by excavating a suitable area or where a low embankment can be constructed across a swale, (2) where failure would not cause loss of life or property damage, and (3) to provide access for maintenance, including sediment removal and sediment stockpiling in a protected area. • Trap should be sized to accommodate a settling zone and sediment storage zone with recommended minimum volumes of 67 yd3/acre and 33 yd3/acre of contributing drainage area, respectively, based on 0.5 in. of runoff volume over a 24-hour period. In many cases, the size of an individual trap is limited by available space. Multiple traps or additional volume may be required to accommodate specific rainfall, soil, and site conditions. • Traps with an impounding levee greater than 4.5 ft tall, measured from the lowest point to the impounding area to the highest point of the levee, and traps capable of impounding more than 35,000 ft3, should be designed by a Registered Civil Engineer. The design should include maintenance requirements, including sediment and vegetation removal, to ensure continuous function of the trap outlet and bypass structures. • The outlet pipe or open spillway must be designed to convey anticipated peak flows. • Use rock or vegetation to protect the trap outlets against erosion. • Fencing should be provided to prevent unauthorized entry. Installation Sediment traps can be constructed by excavating a depression in the ground or creating an impoundment with a small embankment. Sediment traps should be installed outside the area being graded and should be built prior to the start of the grading activities or removal of vegetation. To minimize the area disturbed by them, sediment traps should be installed in natural depressions or in small swales or drainage ways. The following steps must be followed during installation: a The area under the embankment must be cleared, grubbed, and stripped of any vegetation and root mat. The pool area should be cleared. a The fill material for the embankment must be free of roots or other woody vegetation as well as oversized stones, rocks, organic material, or other objectionable material. The embankment may be compacted by traversing with equipment while it is being constructed. • All cut -and -fill slopes should be 3:1 or flatter. • When a riser is used, all pipe joints must be watertight. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Sediment Trap SE-3 • When a riser is used, at least the top two-thirds of the riser should be perforated with 0.5 in. diameter holes spaced 8 in. vertically and 10 to 12 in. horizontally. See SE-2, Sediment Basin. • When an earth or stone outlet is used, the outlet crest elevation should be at least i ft below the top of the embankment. • When crushed stone outlet is used, the crushed stone used in the outlet should meet AASHTO M43, size No. 2 or 24, or its equivalent such as MSHA No. 2. Gravel meeting the above gradation may be used if crushed stone is not available. Costs Average annual cost per installation is $15 ft 2 and plus additional costs for the design and maintenance. Inspection and Maintenance a Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. El Inspect outlet area for erosion and stabilize if required. ■ Inspect trap banks for seepage and structural soundness, repair as needed. ■ Inspect outlet structure and spillway for any damage or obstructions. Repair damage and remove obstructions as needed. • Inspect fencing for damage and repair as needed. ■ Inspect the sediment trap for area of standing water during every visit. Corrective measures should be taken if the BMP does not dewater completely in 96 hours or less to prevent vector production. • Sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the trap capacity. Sediment removed during maintenance may be incorporated into earthwork on the site or disposed of at an appropriate location. ■ Remove vegetation from the sediment trap when first detected to prevent pools of standing water and subsequent vector production. • BMPs that require dewatering shall be continuously attended while dewatering takes place. Dewatering BMPs per NS-2 shall be implemented at all times during dewatering activities. References Brown, W., and T. Schueler. The Economics of Stormwater BMPs in the Mid -Atlantic Region. Prepared for Chesapeake Research Consortium, Edgewater, MD, by the Center for Watershed Protection, Ellicott City, MD, 1997• December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 Sediment s Draft — Sedimentation and Erosion Control, an Inventory of Current Practices, USEPA, April 1990. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Metzger, M.E., D.F. Messer, C.L. Beitia, C.M. Myers, and V.L. Kramer, The Dark Side of Stormwater Runoff Management: Disease Vectors Associated with Structural BMPs, 2002. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group -Working Paper, USEPA, April 1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft,1991. U.S. Environmental Protection Agency (USEPA). Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters. EPA 840-B-9-002. U.S. Environmental Protection Agency, Office of Water, Washington, DC, 1993• Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 5 of 6 Construction www.casqa.org Agreement No. 6574 Sediment Trap SiE-3 December 2019 CASQA BMP Handbook 6 of 6 Construction www.casqa.org Agreement No. 6574 Check Dams 4 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WIN Waste Management and Materials Pollution Control Legend: 0 Primary Category ❑X Secondary Category ❑x 0 Targeted Constituents Description and Purpose sediment A check dam is a small barrier constructed of rock, gravel bags, Nutrients sandbags, fiber rolls, or other proprietary products, placed Trash across a constructed swale or drainage ditch. Check dams reduce the effective slope of the channel, thereby reducing Metals scour and channel erosion by reducing flow velocity and Bacteria increasing residence time within the channel, allowing Oil and Grease sediment to settle. Organics Suitable Applications Check dams may be appropriate in the following situations: Potential Alternatives SE-5 Fiber Rolls • To promote sedimentation behind the dam. SE-6 Gravel Bag Berm ■ To prevent erosion by reducing the velocity of channel flow SE-8 Sandbag Barrier in small intermittent channels and temporary swales. SE-12 Manufactured Linear • In small open channels that drain io acres or less. Sediment Controls SE-14 Biofilter Bags • In steep channels where stormwater runoff velocities„ exceed 5 ft/s. If User/Subscriber modifies this fact sheet in any way, the CASQA • During the establishment of grass linings in drainage name/logo and footer below must be ditches or channels. removed from each page and not appear on the modified version. • In temporary ditches where the short length of service does not warrant establishment of erosion -resistant linings. i -._._ To act as a grade control structure. rt..�m m�m� o, m �:or mmamm�rvww � mm mm December 2019 CASQA BMP Handbook 1 of 7 Construction www.casga.org Agreement No. 6574 Check Dams SE-4 Limitations a Not to be used in live streams or in channels with extended base flows. • Not appropriate in channels that drain areas greater than 10 acres. • Not appropriate in channels that are already grass -lined unless erosion potential or sediment -laden flow is expected, as installation may damage vegetation. ■ Require extensive maintenance following high velocity flows. m Promotes sediment trapping which can be re -suspended during subsequent storms or removal of the check dam. • Do not construct check dams with straw bales or silt fence. • Water suitable for mosquito production may stand behind check dams, particularly if subjected to daily non-stormwater discharges. Implementation General Check dams reduce the effective slope and create small pools in swales and ditches that drain 10 acres or less. Using check dams to reduce channel slope reduces the velocity of stormwater flows, thus reducing erosion of the swale or ditch and promoting sedimentation. Thus, check dams are dual-purpose and serve an important role as erosion controls as well as sediment controls. Note that use of 1-2 isolated check dams for sedimentation will likely result in little net removal of sediment because of the small detention time and probable scour during longer storms. Using a series of check dams will generally increase their effectiveness. A sediment trap (SE-3) may be placed immediately upstream of the check dam to increase sediment removal efficiency. Design and Layout Check dams work by decreasing the effective slope in ditches and swales. An important consequence of the reduced slope is a reduction in capacity of the ditch or swale. This reduction in capacity should be considered when using this BMP, as reduced capacity can result in overtopping of the ditch or swale and resultant consequences. In some cases, such as a "permanent" ditch or swale being constructed early and used as a "temporary" conveyance for construction flows, the ditch or Swale may have sufficient capacity such that the temporary reduction in capacity due to check dams is acceptable. When check dams reduce capacities beyond acceptable limits, either: x Don't use check dams. Consider alternative BMPs, or. a Increase the size of the ditch or swale to restore capacity Maximum slope and velocity reduction is achieved when the toe of the upstream dam is at the same elevation as the top of the downstream dam (see "Spacing Between Check Dams" detail at the end of this fact sheet). The center section of the dam should be lower than the edge sections (at least 6 inches), acting as a spillway, so that the check dam will direct flows to the center of December 2019 CASQA BMP Handbook 2 of 7 Construction www.casqa.org Agreement No. 6574 Check ., ms SE-4 the ditch or swale (see "Typical Rock Check Dam" detail at the end of this fact sheet). Bypass or side -cutting can occur if a sufficient spillway is not provided in the center of the dam. Check dams are usually constructed of rock, gravel bags, sandbags, and fiber rolls. A number of products can also be used as check dams (e.g. HDPE check dams, temporary silt dikes (SE-12)), and some of these products can be removed and reused. Check dams can also be constructed of logs or lumber and have the advantage of a longer lifespan when compared to gravel bags, sandbags, and fiber rolls. Check dams should not be constructed from straw bales or silt fences, since concentrated flows quickly wash out these materials. Rock check dams are usually constructed of 8 to 12 in. rock. The rock is placed either by hand or mechanically, but never just dumped into the channel. The dam should completely span the ditch or swale to prevent washout. The rock used should be large enough to stay in place given the expected design flow through the channel. It is recommended that abutments be extended 18 in. into the channel bank. Rock can be graded such that smaller diameter rock (e.g. 2-4 in) is located on the upstream side of larger rock (holding the smaller rock in place); increasing residence time. Log check dams are usually constructed of 4 to 6 in. diameter logs, installed vertically. The logs should be embedded into the soil at least 18 in. Logs can be bolted or wired to vertical support logs that have been driven or buried into the soil. See fiber rolls, SE-5, for installation of fiber roll check dams. Gravel bag and sand bag check dams are constructed by stacking bags across the ditch or swale, shaped as shown in the drawings at the end of this fact sheet (see "Gravel Bag Check Dam" detail at the end of this fact sheet). Manufactured products, such as temporary silt dikes (SE-12), should be installed in accordance with the manufacturer's instructions. Installation typically requires anchoring or trenching of products, as well as regular maintenance to remove accumulated sediment and debris. If grass is planted to stabilize the ditch or swale, the check dam should be removed when the grass has matured (unless the slope of the swales is greater than 4%). The following guidance should be followed for the design and layout of check dams: a Install the first check dam approximately 16 ft from the outfall device and at regular intervals based on slope gradient and soil type. a Check dams should be placed at a distance and height to allow small pools to form between each check dam. a For multiple check dam installation, backwater from a downstream check dam should reach the toes of the upstream check dam. a A sediment trap provided immediately upstream of the check dam will help capture sediment. Due to the potential for this sediment to be resuspended in subsequent storms, the sediment trap should be cleaned following each storm event. December 2019 CASQA BMP Handbook 3 of 7 Construction www.casqa.org Agreement No. 6574 Check Dams SE-4 • High flows (typically a 2-year storm or larger) should safely flow over the check dam without an increase in upstream flooding or damage to the check dam. x Where grass is used to line ditches, check dams should be removed when grass has matured sufficiently to protect the ditch or swale. Materials • Rock used for check dams should typically be 8-12 in rock and be sufficiently sized to stay in place given expected design flows in the channel. Smaller diameter rock (e.g. 2 to 4 in) can be placed on the upstream side of larger rock to increase residence time. • Gravel bags used for check dams should conform to the requirements of SE-6, Gravel Bag Berms. ■ Sandbags used for check dams should conform to SE-8, Sandbag Barrier. r Fiber rolls used for check dams should conform to SE-5, Fiber Rolls. w Temporary silt dikes used for check dams should conform to SE-12, Temporary Silt Dikes. Installation • Rock should be placed individually by hand or by mechanical methods (no dumping of rock) to achieve complete ditch or swale coverage. • Tightly abut bags and stack according to detail shown in the figure at the end of this section (pyramid approach). Gravel bags and sandbags should not be stacked any higher than 3 ft. • Upper rows or gravel and sand bags shall overlap joints in lower rows. s Fiber rolls should be trenched in, backfilled, and firmly staked in place. • Install along a level contour. • HDPE check dams, temporary silt dikes, and other manufactured products should be used and installed per manufacturer specifications. Costs Cost consists of labor costs if materials are readily available (such as gravel on -site). If material must be imported, costs will increase. For other material and installation costs, see SE-5, SE-6, SE-8, SE-12, and SE-14. Inspection and Maintenance a BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Replace missing rock, bags, rolls, etc. Replace bags or rolls that have degraded or have become damaged. December 2019 CASQA BMP Handbook 4 of 7 Construction www.casga.org Agreement No. 6574 Check Dams SE-4 • If the check dam is used as a sediment capture device, sediment that accumulates behind the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. • If the check dam is used as a grade control structure, sediment removal is not required as long as,the system continues to control the grade. • Inspect areas behind check dams for pools of standing water, especially if subjected to daily non-stormwater discharges. • Remove accumulated sediment prior to permanent seeding or soil stabilization. • Remove check dam and accumulated sediment when check dams are no longer needed. References Draft — Sedimentation and Erosion Control, and Inventory of Current Practices, USEPA, April 1990. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. Metzger, M.E. 2004. Managing mosquitoes in stormwater treatment devices. University of California Division of Agriculture and Natural Resources, Publication 8125. On-line: http:// anrcatalog.ucdavis.edu/pdf/8125.pdf December 2019 CASQA BMP Handbook 5 of 7 Construction www.casqa.org Agreement No. 6574 Check Diams SE-4 .......... December 2019 CASQA BMP Handbook 6 of 7 Construction www.casqa.org Agreement No. 6574 Check Da;ms SE-4 r w00 •'�JM�'Fi+p.:�Wew4�� . Mtl�`t ...... A SEMEN CRECK DMS ------------- December 2019 CASQA BMP Handbook 7 of 7 Construction www.casqa.org Agreement No. 6574 Fiber Rolls, SE-5 Description and Purpose A fiber roll (also known as wattles or logs) consists of straw, coir, curled wood fiber, or other biodegradable materials bound into a tight tubular roll wrapped by plastic netting, which can be photodegradable, or natural fiber, such as jute, cotton, or sisal. Additionally, gravel core fiber rolls are available, which contain an imbedded ballast material such as gravel or sand for additional weight when staking the rolls are not feasible (such as use as inlet protection). When fiber rolls are placed at the toe and on the face of slopes along the contours, they intercept runoff, reduce its flow velocity, release the runoff as sheet flow, and provide removal of sediment from the runoff (through sedimentation). By interrupting the length of a slope, fiber rolls can also reduce sheet and rill erosion until vegetation is established. Suitable Applications Fiber rolls maybe suitable: ■ Along the toe, top, face, and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. • At the end of a downward slope where it transitions to a steeper slope. • Along the perimeter of a project. in As check dams in unlined ditches with minimal grade. a Down -slope of exposed soil areas. Categories EC . �������Erosion Control��........����..... FicKI SE Sediment Control Q TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Category ❑X Secondary Category Targeted Constituents .,..Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-�1 Silt Fence� SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-12 Manufactured Linear Sediment Controls SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version, December 2019 CASQA BMP Handbook K m•,��IIWu7mm.�4;0 mi, mo-l'W.mnmm oro m,s�mr q Construction www.casqa.org Agreement No. 6574 RollsFiber • At operational storm drains as a form of inlet protection. • Around temporary stockpiles. Limitations wry Fiber rolls should be used in conjunction with erosion control, such as hydroseed, RECPs, etc. ■ Only biodegradable fiber rolls containing no plastic can remain on a site applying for a Notice of Termination due to plastic pollution and wildlife concerns (State Water Board, 2016). Fiber rolls containing plastic that are used on a site must be disposed of for final stabilization. wri Fiber rolls are not effective unless trenched in and staked. If not properly staked and trenched in, fiber rolls will not work as intended and could be transported by high flows. ■ Not intended for use in high flow situations (i.e., for concentrated flows). • Difficult to move once saturated. • Fiber rolls have a limited sediment capture zone. vi Fiber rolls should not be used on slopes subject to creep, slumping, or landslide. ww Rolls typically function for 12-24 months, depending upon local conditions and roll material. Implementation Fiber Roll Materials • Fiber rolls should be prefabricated. • Fiber rolls may come manufactured containing polyacrylamide (PAM), a flocculating agent within the roll. Fiber rolls impregnated with PAM provide additional sediment removal capabilities and should be used in areas with fine, clayey or silty soils to provide additional sediment removal capabilities. Monitoring may be required for these installations. • Fiber rolls are made from weed -free rice straw, flax, curled wood fiber, or coir bound into a tight tubular roll by netting or natural fiber (see Limitations above regarding plastic netting). war Typical fiber rolls vary in diameter from 6 in. to 20 in. Larger diameter rolls are available as well. The larger the roll, the higher the sediment retention capacity. • Typical fiber rolls lengths are 4, 10, 20 and 25 ft., although other lengths are likely available. Installation a Locate fiber rolls on level contours spaced as follows: - Slope inclination of 4:1 (H:V) or flatter: Fiber rolls should be placed at a maximum interval of 20 ft. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 Fiber Rolls - Slope inclination between 4:1 and 2:1 (H:V): Fiber Rolls should be placed at a maximum interval of 15 ft. (a closer spacing is more effective). - Slope inclination 2:1 (H:V) or greater: Fiber Rolls should be placed at a maximum interval of 10 ft. (a closer spacing is more effective). • Prepare the slope before beginning installation. m Dig small trenches across the slope on the contour. The trench depth should be 1/4 to 1/3 of the thickness of the roll, and the width should equal the roll diameter, in order to provide area to backfill the trench. ■ It is critical that rolls are installed perpendicular to water movement, and parallel to the slope contour. mi Start building trenches and installing rolls from the bottom of the slope and work up. a It is recommended that pilot holes be driven through the fiber roll. Use a straight bar to drive holes through the roll and into the soil for the wooden stakes. Turn the ends of the fiber roll up slope to prevent runoff from going around the roll. • Stake fiber rolls into the trench. Drive stakes at the end of each fiber roll and spaced 4 ft maximum on center. Use wood stakes with a nominal classification of 0.75 by 0.75 in. and minimum length of 24 in. • If more than one fiber roll is placed in a row, the rolls should be overlapped, not abutted. • See typical fiber roll installation details at the end of this fact sheet. Removal Fiber rolls can be left in place or removed depending on the type of fiber roll and application (temporary vs. permanent installation). Fiber rolls encased with plastic netting or containing any plastic material will need to be removed from the site for final stabilization. Fiber rolls used in a permanent application are to be encased with a non -plastic material and are left in place. Removal of a fiber roll used in a permanent application can result in greater disturbance; therefore, during the BMP planning phase, the areas where fiber rolls will be used on final slopes, only fiber rolls wrapped in non -plastic material should be selected. * Temporary installations should only be removed when up gradient areas are stabilized per General Permit requirements, and/or pollutant sources no longer present a hazard. But they should also be removed before vegetation becomes too mature so that the removal process does not disturb more soil and vegetation than is necessary. December 2019 CASQA BMP Handbook 3 of 5 Construction www.casqa.org Agreement No. 6574 Fiber Rolls SE-5 Costs Material costs for straw fiber rolls range from $26 - $38 per 25-ft. roll, and curled wood fiber rolls range from $30 - $40 per r0112. Material costs for PAM impregnated fiber rolls range between $9.00-$12.0o per linear foot, based upon vendor research, . Inspection and Maintenance a, BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Repair or replace split, torn, unraveling, or slumping fiber rolls. • If the fiber roll is used as a sediment capture device, or as an erosion control device to maintain sheet flows, sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when sediment accumulation reaches one-third the designated sediment storage depth. • If fiber rolls are used for erosion control, such as in a check dam, sediment removal should not be required as long as the system continues to control the grade. Sediment control BMPs will likely be required in conjunction with this type of application. • Repair any rills or gullies promptly. References General Construction — Frequently Asked Questions, Storm Water Program website, State Water Resources Control Board, 2009 updated in 2016. Available online at: http: //www.waterboards.ca.gov/water_issues/programs/stormwater/gen_const_faq.shtml. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. Adjusted for inflation (2oi6 dollars) by Tetra Tech, Inc. Costs estimated based on vendor query by Tetra Tech, Inc. 2o16. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casga.org Agreement No. 6574 Fiber Rolls 61BSI Note� y au Install fiber roll along ri level contour. -V ki 'V V Fiber rolls -V -V VerLicnl spacing rneasured r ilong the face of Lhe slope varies between Install a flber roll near 10' and 20' slope where it transitions 14 into a steeper slope fYPICAI FIBER R01 I INS FALLA FION .................. . N T, '3, Fiber roll 8" rnin 3/4" x 3/4" wood stakes rnox 4' spacing ENTR[NCHMEN I DETAIL December 2019 CASQA BMP Handbook 5 of 5 Construction www.casqa.org Agreement No. 6574 Gravel aF Description and Purpose A gravel bag berm is a series of gravel -filled bags placed on a level contour to intercept sheet flows. Gravel bags pond sheet flow runoff, allowing sediment to settle out, and release runoff slowly as sheet flow, preventing erosion. Suitable Applications Gravel bag berms may be suitable: s As a linear sediment control measure: - Below the toe of slopes and erodible slopes - As sediment traps at culvert/pipe outlets - Below other small cleared areas - Along the perimeter of a site - Down slope of exposed soil areas - Around temporary stockpiles and spoil areas - Parallel to a roadway to keep sediment off paved areas - Along streams and channels • As a linear erosion control measure: - Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. Categories EC Erosion Control ❑x SE Sediment Control 0 TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: -.......... ............................ 0 Primary Category ❑x Secondary Category Targeted Constituents Sediment C�J Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-5 Fiber Roll SE-8 Sandbag Barrier SE-12 Temporary Silt Dike SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 - At the top of slopes to divert runoff away from disturbed slopes. - As chevrons (small check dams) across mildly sloped construction roads. For use check dam use in channels, see SE-4, Check Dams. Limitations ■ Gravel berms may be difficult to remove. a Removal problems limit their usefulness in landscaped areas. • Gravel bag berm may not be appropriate for drainage areas greater than 5 acres. s Runoff will pond upstream of the berm, possibly causing flooding if sufficient space does not exist. • Degraded gravel bags may rupture when removed, spilling contents. • Installation can be labor intensive. ® Durability of gravel bags is somewhat limited, and bags may need to be replaced when installation is required for longer than 6 months. ■ Easily damaged by construction equipment. ■ When used to detain concentrated flows, maintenance requirements increase. Implementation General A gravel bag berm consists of a row of open graded gravel -filled bags placed on a level contour. When appropriately placed, a gravel bag berm intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding allows sediment to settle. The open graded gravel in the bags is porous, which allows the ponded runoff to flow slowly through the bags, releasing the runoff as sheet flows. Gravel bag berms also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Gravel bag berms are similar to sand bag barriers but are more porous. Generally, gravel bag berms should be used in conjunction with temporary soil stabilization controls up slope to provide effective erosion and sediment control. Design and Layout mi Locate gravel bag berms on level contours. When used for slope interruption, the following slope/sheet flow length combinations apply: Slope inclination of 4:1(H:V) or flatter: Gravel bags should be placed at a maximum interval of 20 ft, with the first row near the slope toe. Slope inclination between 4:1 and 2:1 (H:V): Gravel bags should be placed at a maximum interval of 15 ft. (a closer spacing is more effective), with the first row near the slope toe. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casga.org Agreement No. 6574 Gravel Bag Berm Slope inclination 2:1 (H:V) or greater: Gravel bags should be placed at a maximum interval of 10 ft. (a closer spacing is more effective), with the first row near the slope toe. Turn the ends of the gravel bag barriers up slope to prevent runoff from going around the berm. a Allow sufficient space up slope from the gravel bag berm to allow ponding, and to provide room for sediment storage. For installation near the toe of the slope, gravel bag barriers should be set back from the slope toe to facilitate cleaning. Where specific site conditions do not allow for a set -back, the gravel bag barrier may be constructed on the toe of the slope. To prevent flows behind the barrier, bags can be placed perpendicular to a berm to serve as cross barriers. • Drainage area should not exceed 5 acres. • In Non -Traffic Areas: Height = 18 in. maximum - Top width = 24 in. minimum for three or more -layer construction Top width = 12 in. minimum for one- or two -layer construction - Side slopes = 2:1(H:V) or flatter In Construction Traffic Areas: - Height = 12 in. maximum - Top width = 24 in. minimum for three or more -layer construction. - Top width =12 in. minimum for one- or two -layer construction. - Side slopes = 2:1(H:V) or flatter. a Butt ends of bags tightly. ol On multiple row, or multiple layer construction, overlap butt joints of adjacent row and row beneath. w Use a pyramid approach when stacking bags. Materials a Bag Material: Bags should be woven polypropylene, polyethylene or polyamide fabric or burlap, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 in conformance with the requirements in ASTM designation D3786, and ultraviolet stability exceeding 70% in conformance with the requirements in ASTM designation D4355• December 2019 CASQA BMP Handbook 3 of 4 Construction www.casga.org Agreement No. 6574 Gravelr 6 ■ Bag Size: Each gravel -filled bag should have a length of 18 in., width of 12 in., thickness of 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal and may vary based on locally available materials. Fill Material: Fill material should be 0.5 to 1 in. Crushed rock, clean and free from clay, organic matter, and other deleterious material, or other suitable open graded, non -cohesive, porous gravel. Costs Material costs for gravel bags are average and are dependent upon material availability. $3.20- $3.8o per filled gravel bag is standard based upon vendor research (Adjusted for inflation, 2016 dollars, by Tetra Tech, Inc.). Inspection and Maintenance • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Gravel bags exposed to sunlight will need to be replaced every two to three months due to degrading of the bags. ■ Reshape or replace gravel bags as needed. • Repair washouts or other damage as needed. • Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. • Remove gravel bag berms when no longer needed and recycle gravel fill whenever possible and properly dispose of bag material. Remove sediment accumulation and clean, re -grade, and stabilize the area. References Handbook of Steel Drainage and Highway Construction, American Iron and Steel Institute, 1983. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Pollution Plan Handbook, First Edition, State of California, Department of Transportation Division of New Technology, Materials and Research, October 1992. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 VacuumingStreet Sweeping and r Description and Purpose Street sweeping and vacuuming includes use of self-propelled and walk -behind equipment to remove sediment from streets and roadways and to clean paved surfaces in preparation for final paving. Sweeping and vacuuming prevents sediment from the project site from entering storm drains or receiving waters. Suitable Applications Sweeping and vacuuming are suitable anywhere sediment is tracked from the project site onto public or private paved streets and roads, typically at points of egress. Sweeping and vacuuming are also applicable during preparation of paved surfaces for final paving. Limitations Sweeping and vacuuming may not be effective when sediment is wet or when tracked soil is caked (caked soil may need to be scraped loose). Sweeping may be less effective for fine particle soils (i.e., clay). Implementation w Controlling the number of points where vehicles can leave the site will allow sweeping and vacuuming efforts to be focused and perhaps save money. ■ Inspect potential sediment tracking locations daily. Categories EC Erosion Control SE Sediment Control ❑x TC Tracking Control Q WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: ............... Q Primary Objective 0 Secondary Objective Targeted Constituents Sediment Q Nutrients Trash Q Metals Bacteria Oil and Grease Q Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA namellogo and footer below must be removed from each page and not appear on the modified version, December 2019 CASQA BMP Handbook 1 of 2 Construction www.casqa.org Agreement No. 6574 Street S�weeping and Vacuuming SE-7 a Visible sediment tracking should be swept or vacuumed on a daily basis. a, Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than remove it. a If not mixed with debris or trash, consider incorporating the removed sediment back into the project Costs Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental. Expect rental rates from $ 65o/day to $2,5oo/day,, plus operator costs. Hourly production rates vary with the amount of area to be swept and amount of sediment. Match the hopper size to the area and expect sediment load to minimize time spent dumping. Inspection and Maintenance a Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ When actively in use, points of ingress and egress must be inspected daily. • When tracked or spilled sediment is observed outside the construction limits, it must be removed at least daily. More frequent removal, even continuous removal, may be required in some jurisdictions. ■ Be careful not to sweep up any unknown substance or any object that may be potentially hazardous. ■ Adjust brooms frequently; maximize efficiency of sweeping operations. ■ After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I Based on contractor query conducted by Tetra Tech, Inc. November 2016. December 2019 CASQA BMP Handbook 2 of 2 Construction www.casqa.org Agreement No. 6574 Sandbag Barrier SE-�8 Description and Purpose A sandbag barrier is a series of sand -filled bags placed on a level contour to intercept or to divert sheet flows. Sandbag barriers placed on a level contour pond sheet flow runoff, allowing sediment to settle out. Suitable Applications Sandbag barriers may be a suitable control measure for the applications described below. It is important to consider that sand bags are less porous than gravel bags and ponding or flooding can occur behind the barrier. Also, sand is easily transported by runoff if bags are damaged or ruptured. The SWPPP Preparer should select the location of a sandbag barrier with respect to the potential for flooding, damage, and the ability to maintain the BMP. a As a linear sediment control measure: Below the toe of slopes and erodible slopes. As sediment traps at culvert/pipe outlets. - Below other small cleared areas. - Along the perimeter of a site. - Down slope of exposed soil areas. - Around temporary stockpiles and spoil areas. Parallel to a roadway to keep sediment off paved areas. - Along streams and channels. Categories EC .. . . . ..... Erosion Conte rol SE Sediment Control Q TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control Waste Management and WM Materials Pollution Control ................. Legend: .................. Q Primary Category ❑X Secondary Category Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-5 Fiber Rolls SE-6 Gravel Bag Berm SE-12 Manufactured Linear Sediment Controls SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version.. KAMUMN911 wrt� December 2019 CASQA BMP Handbook 1 of 6 Construction www.casga.org Agreement No. 6574 Sandbag Barrier a As linear erosion control measure: - Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. - At the top of slopes to divert runoff away from disturbed slopes. - As check dams across mildly sloped construction roads. Limitations o It is necessary to limit the drainage area upstream of the barrier to 5 acres. • Sandbags are not intended to be used as filtration devices. • Easily damaged by construction equipment. • Degraded sandbags may rupture when removed, spilling sand. • Installation can be labor intensive. • Durability of sandbags is somewhat limited, and bags will need to be replaced when there are signs of damage or wear. ® Burlap should not be used for sandbags. Implementation General A sandbag barrier consists of a row of sand -filled bags placed on a level contour. When appropriately placed, a sandbag barrier intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding allows sediment to settle. Sand -filled bags have limited porosity, which is further limited as the fine sand tends to quickly plug with sediment, limiting or completely blocking the rate of flow through the barrier. If a porous barrier is desired, consider SE-1, Silt Fence, SE-5, Fiber Rolls, SE-6, Gravel Bag Berms or SE-14, Biofilter Bags. Sandbag barriers also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets which erode rills, and ultimately gullies, into disturbed, sloped soils. Sandbag barriers are similar to gravel bag berms, but less porous. Generally, sandbag barriers should be used in conjunction with temporary soil stabilization controls up slope to provide effective erosion and sediment control. Design and Layout A Locate sandbag barriers on a level contour. When used for slope interruption, the following slope/sheet flow length combinations apply: - Slope inclination of 4:1(H:V) or flatter: Sandbags should be placed at a maximum interval of 20 ft, with the first row near the slope toe. - Slope inclination between 4:1 and 2:1(H:V): Sandbags should be placed at a maximum interval of 15 ft. (a closer spacing is more effective), with the first row near the slope toe. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casga.org Agreement No. 6574 - Slope inclination 2:1 (H:V) or greater: Sandbags should be placed at a maximum interval of io ft. (a closer spacing is more effective), with the first row near the slope toe. m Turn the ends of the sandbag barrier up slope to prevent runoff from going around the barrier. ■ Allow sufficient space up slope from the barrier to allow ponding, and to provide room for sediment storage. • For installation near the toe of the slope, sand bag barriers should be set back from the slope toe to facilitate cleaning. Where specific site conditions do not allow for a set -back, the sand bag barrier may be constructed on the toe of the slope. To prevent flows behind the barrier, bags can be placed perpendicular to a berm to serve as cross barriers. • Drainage area should not exceed 5 acres. • Butt ends of bags tightly. • Overlap butt joints of row beneath with each successive row. w Use a pyramid approach when stacking bags. • In non -traffic areas - Height = 18 in. maximum - Top width = 24 in. minimum for three or more -layer construction - Side slope = 2:1 (H:V) or flatter a In construction traffic areas - Height = 12 in. maximum - Top width = 24 in. minimum for three or more -layer construction. - Side slopes = 2:1 (H:V) or flatter. • See typical sandbag barrier installation details at the end of this fact sheet. Materials • Sandbag Material: Sandbag should be woven polypropylene, polyethylene or polyamide fabric, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 in conformance with the requirements in ASTM designation D3786, and ultraviolet stability exceeding 70% in conformance with the requirements in ASTM designation D4355• Use of burlap is not an acceptable substitute, as sand can more easily mobilize out of burlap. • Sandbag Size: Each sand -filled bag should have a length of 18 in., width of 12 in., thickness of 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal and may vary based on locally available materials. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Fill Material: All sandbag fill material should be non -cohesive, Class 3 (Caltrans Standard Specification, Section 25) or similar permeable material free from clay and deleterious material, such as recycled concrete or asphalt. Costs Empty sandbags cost $0.25 - $0.75. Average cost of fill material is $8 per yd3. Additional labor is required to fill the bags. Pre -filled sandbags are more expensive at $1.50 - $2.00 per bag. These costs are based upon vendor research. Inspection and Maintenance i BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Sandbags exposed to sunlight will need to be replaced every two to three months due to degradation of the bags. • Reshape or replace sandbags as needed. • Repair washouts or other damage as needed. • Sediment that accumulates behind the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. • Remove sandbags when no longer needed and recycle sand fill whenever possible and properly dispose of bag material. Remove sediment accumulation, and clean, re -grade, and stabilize the area. References Standard Specifications for Construction of Local Streets and Roads, California Department of Transportation (Caltrans), July 2002. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 C7 :�iFz CS t^ v w,. �- t ar r Cy 4 t,t3 Q ° E Yy LD c c £ c zj u v if3 w. 0, -c ^r �' a +°•` T �'• 3 m 41 .i - u° rr S- ko w 0 Ln O O C 0) �p O O = U a zi Q m tf) c 3 O' U 3 Q U Agreement No. 6574 ne u 6 �W N n. s7i Agreement No. 6574 Description and Purpose A straw bale barrier is a series of straw bales placed on a level contour to intercept sheet flows. Straw bale barriers pond sheet -flow runoff, allowing sediment to settle out. Suitable Applications Straw bale barriers may be suitable: As a linear sediment control measure: - Below the toe of slopes and erodible slopes - As sediment traps at culvert/pipe outlets - Below other small cleared areas - Along the perimeter of a site - Down slope of exposed soil areas - Around temporary stockpiles and spoil areas - Parallel to a roadway to keep sediment off paved areas - Along streams and channels a As linear erosion control measure: - Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Objective 0 Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics ❑x Q M Potential Alternatives SE-1 Silt Fence SE-5 Fiber Rolls SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-12 Temporary Silt Dike SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and Tooter below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casga.org Agreement No. 6574 Straw Bale Barrier SE-9 - At the top of slopes to divert runoff away from disturbed slopes - As check dams across mildly sloped construction roads Limitations Straw bale barriers: • Are not to be used for extended periods of time because they tend to rot and fall apart • Are suitable only for sheet flow on slopes of 10 % or flatter ■ Are not appropriate for large drainage areas, limit to one acre or less ■ May require constant maintenance due to rotting ■ Are not recommended for concentrated flow, inlet protection, channel flow, and live streams • Cannot be made of bale bindings of jute or cotton ® Require labor-intensive installation and maintenance ® Cannot be used on paved surfaces ■ Should not to be used for drain inlet protection • Should not be used on lined ditches • May introduce undesirable non-native plants to the area Implementation General A straw bale barrier consists of a row of straw bales placed on a level contour. When appropriately placed, a straw bale barrier intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding provides quiescent conditions allowing sediment to settle. Straw bale barriers also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Straw bale barriers have not been as effective as expected due to improper use. These barriers have been placed in streams and drainage ways where runoff volumes and velocities have caused the barriers to wash out. In addition, failure to stake and entrench the straw bale has allowed undercutting and end flow. Use of straw bale barriers in accordance with this BMP should produce acceptable results. Design and Layout it Locate straw bale barriers on a level contour. - Slopes up to 1o:1(H:V): Straw bales should be placed at a maximum interval of 50 ft (a closer spacing is more effective), with the first row near the toe of slope. - Slopes greater than 1o:1(H:V): Not recommended. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Straw ■ Barrier • Turn the ends of the straw bale barrier up slope to prevent runoff from going around the barrier. • Allow sufficient space up slope from the barrier to allow ponding, and to provide room for sediment storage. • For installation near the toe of the slope, consider moving the barrier away from the slope toe to facilitate cleaning. To prevent flow behind the barrier, sand bags can be placed perpendicular to the barrier to serve as cross barriers. • Drainage area should not exceed 1 acre, or 0.25 acre per 10o ft of barrier. • Maximum flow path to the barrier should be limited to ioo ft. • Straw bale barriers should consist of two parallel rows. - Butt ends of bales tightly - Stagger butt joints between front and back row - Each row of bales must be trenched in and firmly staked • Straw bale barriers are limited in height to one bale laid on its side. • Anchor bales with either two wood stakes or four bars driven through the bale and into the soil. Drive the first stake towards the butt joint with the adjacent bale to force the bales together. • See attached figure for installation details. Materials • Straw Bale Size: Each straw bale should be a minimum of 14 in. wide, 18 in. in height, 36 in. in length and should have a minimum mass of 50 lbs. The straw bale should be composed entirely of vegetative matter, except for the binding material. • Bale Bindings: Bales should be bound by steel wire, nylon or polypropylene string placed horizontally. Jute and cotton binding should not be used. Baling wire should be a minimum diameter of 14 gauge. Nylon or polypropylene string should be approximately 12 gauge in diameter with a breaking strength of 80 lbs force. • Stakes: Wood stakes should be commercial quality lumber of the size and shape shown on the plans. Each stake should be free from decay, splits or cracks longer than the thickness of the stake, or other defects that would weaken the stakes and cause the stakes to be structurally unsuitable. Steel bar reinforcement should be equal to a #4 designation or greater. End protection should be provided for any exposed bar reinforcement. Costs Straw bales cost $5 - $7 each. Adequate labor should be budgeted for installation and maintenance. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Straw Bale Barrier Inspection and Maintenance Maintenance ■ Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Straw bales degrade, especially when exposed to moisture. Rotting bales will need to be replaced on a regular basis. • Replace or repair damaged bales as needed. • Repair washouts or other damages as needed. • Sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Sediment removed during maintenance may be incorporated into earthwork on the site or disposed at an appropriate location. ® Remove straw bales when no longer needed. Remove sediment accumulation, and clean, re - grade, and stabilize the area. Removed sediment should be incorporated in the project or disposed of. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 in Y L EL 4 � L Peel M I p u re f„ k c G m Q { { 471 a v r v v c r : L xr r ye ,U�' � j$4r 9 Ct �n q S L C_ A C3 C p G Ci G us cn , r- r- T 0 Ln O O c: C 0 fp O O { ru 6 co Ln U cy U Q U N N N E v N Agreement No. 6574 I,] 701 Yam' J t, t o r_ g P L4 — in u K w i. cr I� m � cr v u -S 4 U S Cam.. v s v c r m nyy w CJ o w c� M. d 1-1 cs Cl w L� 0 Y 0 0 0 C ru O O = U cO d 7 i� u m N U au� U 3 Q v Agreement No. 6574 Description and Purpose Storm drain inlet protection consists of a sediment filter or an impounding area in, around or upstream of a storm drain, drop inlet, or curb inlet. Storm drain inlet protection measures temporarily pond runoff before it enters the storm drain, allowing sediment to settle. Some filter configurations also remove sediment by filtering, but usually the ponding action results in the greatest sediment reduction. Temporary geotextile storm drain inserts attach underneath storm drain grates to capture and filter storm water. Suitable Applications a Every storm drain inlet receiving runoff from unstabilized or otherwise active work areas should be protected. Inlet protection should be used in conjunction with other erosion and sediment controls to prevent sediment -laden stormwater and non-stormwater discharges from entering the storm drain system. Limitations • Drainage area should not exceed 1 acre. ■ In general straw bales should not be used as inlet protection. ■, Requires an adequate area for water to pond without encroaching into portions of the roadway subject to traffic. a Sediment removal may be inadequate to prevent sediment discharges in high flow conditions or if runoff is heavily sediment laden. If high flow conditions are expected, use Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Q Primary Category 0 Secondary Category F& Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-5 Fiber Rolls SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-14 Biofilter Bags SE-13 Compost Socks and Berms If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. 6"JAJ ,164„,32,T@X A, 11) V olio da,Ilii01111RW HMV" 04111i December 2019 CASQA BMP Handbook 1 of 10 Construction www.casqa.org Agreement No. 6574 ProtectionStorm Drain Inlet other onsite sediment trapping techniques in conjunction with inlet protection. r Frequent maintenance is required. • Limit drainage area to 1 acre maximum. For drainage areas larger than 1 acre, runoff should be routed to a sediment -trapping device designed for larger flows. See BMPs SE-2, Sediment Basin, and SE-3, Sediment Traps. ■ Excavated drop inlet sediment traps are appropriate where relatively heavy flows are expected, and overflow capability is needed. Implementation General Inlet control measures presented in this handbook should not be used for inlets draining more than one acre. Runoff from larger disturbed areas should be first routed through SE-2, Sediment Basin or SE-3, Sediment Trap and/or used in conjunction with other drainage control, erosion control, and sediment control BMPs to protect the site. Different types of inlet protection are appropriate for different applications depending on site conditions and the type of inlet. Alternative methods are available in addition to the methods described/shown herein such as prefabricated inlet insert devices, or gutter protection devices. Design and Layout Identify existing and planned storm drain inlets that have the potential to receive sediment - laden surface runoff. Determine if storm drain inlet protection is needed and which method to use. ■ The key to successful and safe use of storm drain inlet protection devices is to know where runoff that is directed toward the inlet to be protected will pond or be diverted as a result of installing the protection device. - Determine the acceptable location and extent of ponding in the vicinity of the drain inlet. The acceptable location and extent of ponding will influence the type and design of the storm drain inlet protection device. Determine the extent of potential runoff diversion caused by the storm drain inlet protection device. Runoff ponded by inlet protection devices may flow around the device and towards the next downstream inlet. In some cases, this is acceptable; in other cases, serious erosion or downstream property damage can be caused by these diversions. The possibility of runoff diversions will influence whether or not storm drain inlet protection is suitable; and, if suitable, the type and design of the device. m! The location and extent of ponding, and the extent of diversion, can usually be controlled through appropriate placement of the inlet protection device. In some cases, moving the inlet protection device a short distance upstream of the actual inlet can provide more efficient sediment control, limit ponding to desired areas, and prevent or control diversions. 81 Seven types of inlet protection are presented below. However, it is recognized that other effective methods and proprietary devices exist and may be selected. December 2019 CASQA BMP Handbook 2 of 10 Construction www.casqa.org Agreement No. 6574 Storm Dranin Inlet Silt Fence: Appropriate for drainage basins with less than a 5% slope, sheet flows, and flows under 0.5 cfs. Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap sediment (SE-3). Gravel bag barrier: Used to create a small sediment trap upstream of inlets on sloped, paved streets. Appropriate for sheet flow or when concentrated flow may exceed 0.5 cfs, and where overtopping is required to prevent flooding. Block and Gravel Filter: Appropriate for flows greater than o.5 cfs. - Temporary Geotextile Storm drain Inserts: Different products provide different features. Refer to manufacturer details for targeted pollutants and additional features. - Biofilter Bag Barrier: Used to create a small retention area upstream of inlets and can be located on pavement or soil. Biofilter bags slowly filter runoff allowing sediment to settle out. Appropriate for flows under 0.5 cfs. - Compost Socks: Allow filtered run-off to pass through the compost while retaining sediment and potentially other pollutants (SE-13). Appropriate for flows under 1.o cfs. ■ Select the appropriate type of inlet protection and design as referred to or as described in this fact sheet. • Provide area around the inlet for water to pond without flooding structures and property. • Grates and spaces around all inlets should be sealed to prevent seepage of sediment -laden water. • Excavate sediment sumps (where needed) 1 to 2 ft with 2:1 side slopes around the inlet. Installation DI Protection Type 1 - Silt Fence - Similar to constructing a silt fence; see BMP SE-1, Silt Fence. Do not place fabric underneath the inlet grate since the collected sediment may fall into the drain inlet when the fabric is removed or replaced and water flow through the grate will be blocked resulting in flooding. See typical Type 1 installation details at the end of this fact sheet. 1. Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence inlet protection device. 2. Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum of 3 ft apart and drive them at least 18 in. into the ground or 12 in. below the bottom of the trench. The stakes should be at least 48 in. 3. Lay fabric along bottom of trench, up side of trench, and then up stakes. See SE-1, Silt Fence, for details. The maximum silt fence height around the inlet is 24 in. 4. Staple the filter fabric (for materials and specifications, see SE-1, Silt Fence) to wooden stakes. Use heavy-duty wire staples at least 1 in. in length. December 2019 CASQA BMP Handbook 3 of 10 Construction www.casqa.org Agreement No. 6574 Storm Drain Inlet wr 0 5. Backfill the trench with gravel or compacted earth all the way around. • DI Protection Type 2 - Excavated Drop Inlet Sediment Trap - Install filter fabric fence in accordance with DI Protection Type 1. Size excavated trap to provide a minimum storage capacity calculated at the rate 67 yd3/acre of drainage area. See typical Type 2 installation details at the end of this fact sheet. • DI Protection Type 3 - Gravel bag - Flow from a severe storm should not overtop the curb. In areas of high clay and silts, use filter fabric and gravel as additional filter media. Construct gravel bags in accordance with SE-6, Gravel Bag Berm. Gravel bags should be used due to their high permeability. See typical Type 3 installation details at the end of this fact sheet. 1. Construct on gently sloping street. 2. Leave room upstream of barrier for water to pond and sediment to settle. 3. Place several layers of gravel bags — overlapping the bags and packing them tightly together. 4. Leave gap of one bag on the top row to serve as a spillway. Flow from a severe storm (e.g., 10-year storm) should not overtop the curb. ■ DI Protection Type 4 — Block and Gravel Filter - Block and gravel filters are suitable for curb inlets commonly used in residential, commercial, and industrial construction. See typical Type 4 installation details at the end of this fact sheet. i. Place hardware cloth or comparable wire mesh with 0.5 in. openings over the drop inlet so that the wire extends a minimum of i ft beyond each side of the inlet structure. If more than one strip is necessary, overlap the strips. Place woven geotextile over the wire mesh. 2. Place concrete blocks lengthwise on their sides in a single row around the perimeter of the inlet, so that the open ends face outward, not upward. The ends of adjacent blocks should abut. The height of the barrier can be varied, depending on design needs, by stacking combinations of blocks that are 4 in., 8 in., and 12 in. wide. The row of blocks should be at least 12 in. but no greater than 24 in. high. 3. Place wire mesh over the outside vertical face (open end) of the concrete blocks to prevent stone from being washed through the blocks. Use hardware cloth or comparable wire mesh with 0.5 in. opening. 4. Pile washed stone against the wire mesh to the top of the blocks. Use 0.75 to 3 in. DI Protection Type 5 — Temporary Geotextile Insert (proprietary) - Many types of temporary inserts are available. Most inserts fit underneath the grate of a drop inlet or inside of a curb inlet and are fastened to the outside of the grate or curb. These inserts are removable, and many can be cleaned and reused. Installation of these inserts differs between manufacturers. Please refer to manufacturer instruction for installation of proprietary devices. December 2019 CASQA BMP Handbook 4 of 10 Construction www.casqa.org Agreement No. 6574 DI Protection Type 6 - Biofilter bags — Biofilter bags may be used as a substitute for gravel bags in low -flow situations. Biofilter bags should conform to specifications detailed in SE-14, Biofilter bags. 1. Construct in a gently sloping area. 2. Biofilter bags should be placed around inlets to intercept runoff flows. 3. All bag joints should overlap by 6 in. 4. Leave room upstream for water to pond and for sediment to settle out. 5. Stake bags to the ground as described in the following detail. Stakes may be omitted if bags are placed on a paved surface. ■ DI Protection Type 7 —Compost Socks —A compost sock can be assembled on site by filling a mesh sock (e.g., with a pneumatic blower). Compost socks do not require special trenching compared to other sediment control methods (e.g., silt fence). Compost socks should conform to specification detailed in 5E-13, Compost Socks and Berms. Costs al Average annual cost for installation and maintenance of DI Type 1-4 and 6 (one-year useful life) is $200 per inlet. w Temporary geotextile inserts are proprietary, and cost varies by region. These inserts can often be reused and may have greater than 1 year of use if maintained and kept undamaged. Average cost per insert ranges from $50-75 plus installation, but costs can exceed $too. This cost does not include maintenance. See SE-13 for Compost Sock cost information. Inspection and Maintenance • BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Silt Fences. If the fabric becomes clogged, torn, or degrades, it should be replaced. Make sure the stakes are securely driven in the ground and are in good shape (i.e., not bent, cracked, or splintered, and are reasonably perpendicular to the ground). Replace damaged stakes. At a minimum, remove the sediment behind the fabric fence when accumulation reaches one-third the height of the fence or barrier height. r Gravel Filters. If the gravel becomes clogged with sediment, it should be carefully removed from the inlet and either cleaned or replaced. Since cleaning gravel at a construction site may be difficult, consider using the sediment -laden stone as fill material and put fresh stone around the inlet. Inspect bags for holes, gashes, and snags, and replace bags as needed. Check gravel bags for proper arrangement and displacement. December 2019 CASQA BMP Handbook 5 of 10 Construction www.casqa.org Agreement No. 6574 Storm Dramin Inlet Protection ■ Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Inspect and maintain temporary geotextile insert devices according to manufacturer's specifications. w Remove storm drain inlet protection once the drainage area is stabilized. - Clean and regrade area around the inlet and clean the inside of the storm drain inlet, as it should be free of sediment and debris at the time of final inspection. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. December 2019 CASQA BMP Handbook 6 of 10 Construction www.casqa.org Agreement No. 6574 Storm Drain Inlet Protection SE-10 � NOTES: l For use in areas where grading hoa been completed and finol soil stobi|izution nnd seeding are pending, 2Not opphcohIe M paved areas 3 Not oppUcoble with concentrated flows Construction w=w.casqa.org Agreement No. 6574 Storm Drain, inlet Proteicti'on SE-10 .......... . .............. .. ...... ... -------------- X X x Notes 1 For use, in cleared and grubbed and in graded cress 2 Shope basin so that longest inflow area faces longest length 3 For concentrated flows, shope basin in 2: 1 raiio with engi:h towards direction of flow. December 2019 CASQA BMP Handbook 8 of 10 Construction www.casqa.org Agreement No. 6574 Storm Dra"In Inlet Protection SiE-10 Grave|baqs �-2—�ugsxig� NOTL�� 2 uu,m v� � m|ow for p'nprr moioto"n^�c oou c�000up ^ Bogs must b� romnvru u�t*r od�c�o+ op�mtivn is cnmp|e��d 5 No/ o�p|i�ome in o/eos wgI aiMs o1 yy wiNou� �Ko, fouric 6 Pmtedioill canbeefl:ecdveeve nif1111!is noti[nmedia � ek/adjacenttothein|etpm*ided Construction **w.casqo.nng Agreement No. 6574 oProtection 0 December 2019 CASQA BMP Handbook 10 of 10 Construction www.casga.org Agreement No. 6574 Description and Purpose Active Treatment Systems (ATS) reduce turbidity of construction site runoff by introducing chemicals to stormwater through direct dosing or an electrical current to enhance flocculation, coagulation, and settling of the suspended sediment. Coagulants and flocculants are used to enhance settling and removal of suspended sediments and generally include inorganic salts and polymers (USACE, 2001). The increased flocculation aids in sedimentation and ability to remove fine suspended sediments, thus reducing stormwater runoff turbidity and improving water quality. Suitable Applications ATS can reliably provide exceptional reductions of turbidity and associated pollutants and should be considered where turbid discharges to sediment and turbidity sensitive waters cannot be avoided using traditional BMPs. Additionally, it may be appropriate to use an ATS when site constraints inhibit the ability to construct a correctly sized sediment basin, when clay and/or highly erosive soils are present, or when the site has very steep or long slope lengths. Limitations Dischargers choosing to utilize chemical treatment in an ATS must follow all guidelines of the Construction General Permit Attachment F — Active Treatment System Requirements. General limitations are as follows: Categories EC Erosion Control.ri.riri....1Z SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category Secondary Category Targeted Constituents Sediment Lf Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. m �m uuw47aw w:auu, ��wm�w^mw poi, ur m� December 2019 CASQA BMP Handbook 1 of 8 Construction www.casqa.org Agreement No. 6574 Active Treatment Systems SE-11 • Numeric Effluent Limit (NEL) for all discharges (10 NTU daily flow -weighted average) • Limited availability of chemical residual testing procedures that meet permit requirements for flow -through treatment • Specific field and classroom ATS training required to operate equipment • Batch treatment requires extensive toxicity testing of effluent • Batch treatment requires large footprint to accommodate treatment cells • Requires additional filtration to remove residual floc and treatment chemicals prior to discharge • Petroleum based polymers should not be used mi Requires site -specific design and equipment • Limited discharge rates depending on receiving water body a Labor intensive operation and maintenance m ATS costs are higher on a unit basis for smaller sites that would be expected to have a lower volume of treated runoff • ATS costs are seasonably variable due to increases or decreases in rainfall volumes Implementation Turbidity is difficult to control once fine particles are suspended in stormwater runoff from a construction site. Sedimentation ponds are effective at removing larger particulate matter by gravity settling but are ineffective at removing smaller particulates such as clay and fine silt. Sediment ponds are typically designed to remove sediment no smaller than medium silt (0.02 mm). ATS may be used to reduce the turbidity of stormwater runoff. With an ATS, very high turbidities can be reduced to levels comparable to what is found in streams during dry weather. Criteria for ATS Product Use Chemically treated stormwater discharged from construction sites must be non -toxic to aquatic organisms. The following protocol should be used to evaluate chemicals proposed for stormwater treatment at construction sites. Authorization to use a chemical in the field based on this protocol does not relieve the applicant from responsibility for meeting all discharge and receiving water criteria applicable to a site. ■ An ATS Plan, which includes an Operation and Maintenance component, a Monitoring, Sampling and Reporting component, a Health and Safety component, and a Spill Prevention component must be prepared and submitted to the Regional Water Quality Control Board (RWQCB). December 2019 CASQA BMP Handbook 2 of 8 Construction www.casga.org Agreement No. 6574 Active Treatment Siystems SE-11 Treatment chemicals should be approved by EPA for potable water use or otherwise be demonstrated to be protective of human health and the environment. Chemical residual or whole effluent toxicity testing is required. Prior to field use of chemical treatment, jar tests are to be conducted to demonstrate that turbidity reduction necessary to meet the NELs and receiving water criteria can be achieved. Test conditions, including but not limited to raw water quality and jar test procedures, should be indicative of field conditions. Although these small-scale tests cannot be expected to reproduce performance under field conditions, they are indicative of treatment capability. A minimum of six site -specific jar tests must be conducted per chemical. ■ The proposed maximum dosage should be at least a factor of five lower than the no observed effects concentration (NOEC). m Effluent discharge from an ATS to a receiving water is conditional upon the favorable results of full-scale whole effluent bioassay/toxicity testing for batch treatment systems and upon chemical residuals testing for flow -through systems. Contact the RWQCB for a list of treatment chemicals that may be pre -approved for use. Active Treatment System Design Considerations The design and operation of an ATS should take into consideration the factors that determine optimum, cost-effective performance. While site characteristics will influence system design, it is important to recognize the following overriding considerations: a The right chemical must be used at the right dosage. A dosage that is either too low or too high will not produce the lowest turbidity. There is an optimum dosage rate. This is a situation where the adage "adding more is always better" is not the case. s The coagulant must be mixed rapidly into the water to insure proper dispersion. m The mixing system for batch treatment must be sized to provide adequate mixing for the design storage volume. Lack of adequate mixing during the flocculation phase results in flocs that are too small and/or insufficiently dense. Too much mixing can rapidly destroy floc as it is formed. a Care must be taken in the design of the withdrawal system to minimize outflow velocities and to prevent floc discharge. The discharge should be directed through a filtration system such as sand, bag, or cartridge filter that would catch any unintended floc discharge. a ATS is also regulated for pH of the discharge. A pH -adjusting chemical should be added into the treated water to control pH if the selected coagulant requires alteration of the pH of the discharge outside of the acceptable range. Active Treatment System Design ATS can be designed as batch treatment systems using either ponds or portable trailer -mounted tanks, or as flow -through systems using any number of proprietary designed systems. December 2019 CASQA BMP Handbook 3 of 8 Construction www.casqa.org Agreement No. 6574 Active Treatment Systems SE-111 'ray /l��le�lra «� ��irt�r» rrrr/Ji %err„„ar Ilt!?ie For and Talmo, Snwn� {N�wMpl Figure has been adapted from Port of Seattle response to Washington Dept. of Ecology Action Order 2948 Batch Tm°g�a a1a tg , Batch Treatment systems consist of the stormwater collection system (either temporary diversion or the permanent site drainage system); a sediment basin, trap or holding tanks; pumps; a chemical feed system; treatment cells; and, interconnecting piping. Batch treatment systems should use a minimum of two lined treatment cells. Multiple treatment cells allow for clarification of treated water while other cells are being filled or emptied. Treatment cells may be basins, traps, or tanks. Portable tanks may also be suitable for some sites. The following equipment should be located in a secured, covered location: * The chemical injector ol Secondary contaminant for acid, caustic, buffering compound, and treatment chemical • Emergency shower and eyewash • Monitoring equipment which consists of a pH meter and a turbidimeter (if not already within the instrumentation panel of the chemical injector) I; �w t1 ') teatent. At a minimum, a flow -through ATS system consists of the stormwater collection system (either temporary diversion or the permanent site drainage system), an untreated stormwater storage pond or holding tank, and a chemically enhanced filtration system. Stormwater is collected at interception point(s) on the site and is diverted by gravity or by pumping to an untreated stormwater storage pond or other untreated stormwater holding area. December 2019 CASQA BMP Handbook 4 of 8 Construction www.casga.org Agreement No. 6574 Active Treatment The stormwater is stored until treatment occurs. It is important that the holding pond be large enough to provide adequate storage. Stormwater is then pumped from the untreated stormwater storage pond to the chemically enhanced filtration system where polymer is added. Adjustments to pH maybe necessary before chemical addition. The filtration system continually monitors the stormwater for turbidity and pH. If the discharge water is out of the acceptable turbidity or pH range, the water is recycled to the untreated stormwater pond (or holding tank) where it can be retreated. Flow through systems must ensure that: • Cumulative flow volume shall be recorded daily. The data recording system shall have the capacity to record a minimum of seven days of continuous data. ■ Instrumentation systems are interfaced with system control to provide auto shutoff or recirculation in the event that effluent measurements exceed turbidity or pH. • Upon system upset, power failure, or other catastrophic event, the ATS will default to a recirculation mode or safe shut down. a The instrumentation system provides a method for controlling coagulant dose, to prevent potential overdosing. Sizing Criteria An ATS shall be designed and approved by a Certified Professional in Erosion and Sediment Control (CPESC), a Certified Professional in Storm Water Quality (CPSWQ); a California registered civil engineer; or any other California registered engineer. ATS must be designed to capture and treat (within 72 hours) runoff from the to -year 24-hour storm event. The runoff volume of the watershed area to be treated from this size storm event is required to be calculated using the Rational Method with a runoff coefficient of i. If sediment basins are used to capture flow -through or batch treatment, see SE-2, Sediment Basin, for design criteria. Bypass should be provided around the ATS to accommodate extreme storm events. Primary settling should be encouraged in the sediment basin/storage pond. A forebay with access for maintenance may be beneficial. The permissible discharge rate governed by potential downstream effect should be used to calculate the recommended size of the treatment cells. Local requirements related to Phase I or Phase II NPDES permit thresholds should be considered in developing maximum discharge rates the ATS Plan. Costs Costs for ATS may be significant due to equipment rental requirements and cost of chemicals. ATS cost is lower on a treated unit -basis for large construction sites with large volumes of runoff. Inspection and Maintenance ATS must be operated and maintained by individuals with experience in their use and trained in accordance with training requirements below. ATS should be monitored continuously while in December 2019 CASQA BMP Handbook 5 of 8 Construction www.casqa.org Agreement No. 6574 Active r t nt Systems use. A designated responsible person shall be on site daily at all times during treatment operations. Daily on -site visual monitoring of the system for proper performance shall be conducted and recorded in the project data log. The name, phone number, and training documentation of the person responsible for system operation and monitoring shall be included in the project data log. The following monitoring requirements and results should be recorded in the data log: Operational and Compliance Monitoring • Effluent flow rate and volume shall be continuously monitored and recorded at 15- minute or less intervals. • Influent and effluent pH must be continuously monitored and recorded at 15-minute or less intervals. • Influent and effluent turbidity (expressed in NTU) must be continuously monitored and recorded at 15-minute or less intervals. • The type and amount of chemical used for pH adjustment, if any, shall be monitored and recorded. • Dose rate of chemical used in the ATS system (expressed in mg/L) shall be monitored and reported 15-minutes after startup and every 8 hours of operation. • Laboratory duplicates — monthly laboratory duplicates for residual coagulant analysis must be performed and records shall be maintained onsite. • Effluent shall be monitored and recorded for residual chemical/additive levels. • If a residual chemical/additive test does not exist and the ATS is operating in a batch treatment mode of operation refer to the toxicity monitoring requirements below. Toxicity Monitoring Batch Treatment, Toxicity testing for systems operated in batch treatment mode should be made in accordance with the following: • Acute toxicity testing on effluent samples representing effluent from each batch prior to discharge shall be undertaken. All bioassays shall be sent to a laboratory certified by the Department of Health Services (DHS) Environmental Laboratory Accreditation Program (ELAP). The required field of testing number for Whole Effluent Toxicity (WET) testing is E113. • Acute toxicity tests shall be conducted with the following species and protocols. The methods to be used in the acute toxicity testing shall be those outlined for a 96-hour acute test in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Water to Freshwater and Marine Organisms, USEPA-841-R-02-012" for Fathead minnow, Pimephales promelas. Rainbow trout, Oncorhynchus mykiss, may be used as a substitute for fathead minnow. December 2019 CASQA BMP Handbook 6 of 8 Construction www,casga.org Agreement No. 6574 Active Treatment Systems SE-11 All toxicity tests shall meet quality assurance criteria and test acceptability criteria in the most recent versions of the EPA test method for WET testing. i to"r.-wt ,rou h Trgatment Toxicity testing for systems operated in flow -through treatment mode should be made in accordance with the following: A residual chemical test method shall be used that has a method detection limit (MDL) of io% or less than the maximum allowable threshold concentration (MATC) for the specific coagulant in use and for the most sensitive species of the chemical used. The MATC is equal to the geometric mean of the No Observed Effect Concentration (NOEL) and Lowest Observed Effect Concentration (LOEC) Acute and Chronic toxicity results for most sensitive species determined for the specific coagulant. " The residual chemical test method shall produce a result within one hour of sampling. A California State certified laboratory shall validate the selected residual chemical test. Specifically, the lab will review the test protocol, test parameters, and the detection limit of the coagulant. The discharger shall electronically submit this documentation as part of the ATS Plan. Numeric Effluent Limit (NEL) Compliance: All chemically treated stormwater must be sampled and tested for compliance with pH and turbidity limits. These limits have been established by the Construction General Permit. Sampling and testing for other pollutants may also be necessary at some sites. Turbidity limits have been set as io NTU as a daily flow -weighted average or 20 NTU from a single sample. pH must be within the range of 6.o to 9.o standard units. It is often possible to discharge treated stormwater that has a lower turbidity than the receiving water and that matches the pH. Treated stormwater samples and measurements should be taken from the discharge pipe or another location representative of the nature of the treated stormwater discharge. Samples used for determining compliance with the water quality standards in the receiving water should not be taken from the treatment pond prior to decanting. Compliance with the water quality standards is determined in the receiving water. Operator Training: Operators shall have training specific to using an ATS and liquid coagulants for stormwater discharges in California. The training shall be in the form of a formal class with a certificate and requirements for testing and certificate renewal. Training shall include a minimum of eight hours classroom and 32 hours field training. Standard BMPs: Erosion and sediment control BMPs should be implemented throughout the site to prevent erosion and discharge of sediment to the ATS. Some types of chemical coagulation and flocculation are only achievable in water below a certain turbidity; therefore, minimizing the amount of sediment reaching the system will increase the likelihood of meeting effluent limits and will potentially lower costs of chemical dosing. December 2019 CASQA BMP Handbook 7 of 8 Construction www.casga.org Agreement No. 6574 Active Treatment Siystems SE-11 Sediment Removal and Disposal ' Sediment shall be removed from the storage or treatment cells as necessary to ensure that the cells maintain their required water storage (i.e., volume) capability. Handling and disposal of all solids generated during ATS operations shall be done in accordance with all local, state, and federal laws and regulations. If sediment is determined to be non -toxic, it may be incorporated into the site away from drainages. References Engineering and Design — Precipitation/Coagulation/Flocculation. United States Army Corps of Engineers, EM 1110-1-4012, 2001. Evaluation of Active Treatment Systems (ATS) for Construction Site Runoff. California Building and Industry Association (prepared by Geosyntec Consultants), 2Oo8. Stormwater Management Manual for Western Washington, Volume II — Construction Stormwater Pollution Prevention, Washington State Department of Ecology, August 2001. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 8 of 8 Construction www.casqa.org Agreement No. 6574 Manufactured Linear Sediment Description and Purpose Manufactured linear sediment controls (MLSQ are pre - manufactured devices that are typically specified and installed for drainage and sediment control on the perimeter of disturbed sites or stockpiles and as check dams within channels. Typically, MLSCs can be reused. This fact sheet is intended to provide guidance on BMP selection and implementation of proprietary or vendor - supplied products, for sediment control. Products should be evaluated for project -specific implementation and used if determined to be appropriate by the SWPPP Preparer. Suitable Applications Categories EC Erosion Control 0 SE Sediment Control Q TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and 0 Materials Pollution Control Legend: 0 Primary Category 0 Secondary Category Targeted Constituents Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-5 Fiber Roll SE-6 Gravel Bag Berm SE-8 Sandbag Barrier MLSCs are generally used in areas as a substitute for fiber rolls and silt fences in sediment control applications to slow down If User/Subscriber modifies this fact runoff water, divert drainage or contain fines and sediment. sheet in any way, the CASQA MLSCs are a linear control and application suitability varies name/logo and footer below must be based on the specific product type. They may be suitable: removed from each page and not appear on the modified version. a On paved surfaces for perimeter protection. x As check structures in channels. a Along the perimeter of disturbed sites in lieu of silt fence. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 ■ At operational storm drains as a form of inlet protection. • Around temporary stockpiles or material/equipment storage areas. n At the interface between graveled driveways and pavement. u• Along the toe of exposed and erodible slopes. Limitations ■ Limitations vary by product. Product manufacturer's printed product use instructions should be reviewed by the SWPPP Preparer to determine the project -specific applicability of MLSCs. Implementation General When appropriately placed, MLSCs intercept and slow sheet flow runoff, causing temporary ponding. The temporary ponding provides quiescent conditions allowing sediment to settle. The device is porous, which allows the ponded runoff to flow slowly through the device, releasing the runoff as sheet flows. Generally, MLSCs should be used in conjunction with temporary soil stabilization controls up -slope to provide an effective combination of erosion and sediment control. Design and Layout MLSCs used on soil should be trenched or attached to the ground per manufacturer specifications in a manner that precludes runoff or ponded water from flowing around or under the device. MLSCs designed for use on asphalt or concrete may be attached using a variety of methods, including nailing the device to the pavement, or using a high strength adhesive. e Follow manufacturer written specifications when installing MLSCs. 01 Allow sufficient space up -slope from the silt dike to allow ponding, and to provide room for sediment storage. a For installation near the toe of the slope, MLSCs should be set back 3 feet from the slope toe to facilitate cleaning. Where site conditions do not allow set back, the sediment control may be constructed on the toe of the slope. To prevent flows behind the barrier, sand or gravel bags can be placed perpendicular and between the sediment control and slope to serve as a barrier to parallel flow. Drainage area should not exceed 5 acres. Materials a Several manufactured products are available. The following search terms or combination of terms can be used with an internet search engine to find manufactured linear sediment controls: December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 M .. j - "silt barrier" - "reusable silt fence" - "silt fence alternative" or "perimeter sediment control" Costs Manufacturers should be contacted directly for current pricing. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. n Reshape or replace sections of damaged MLSCs as needed. 9 Repair washouts or other damage as needed. m Sediment that accumulates behind the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. m Remove MLSCs when no longer needed. Remove sediment accumulation and clean, re - grade, and stabilize the area. Removed sediment should be incorporated in the project or disposed of properly. References City of Elko Construction Site Best Management Practices Handbook, December 2005. Construction Site Best Management Practices Handbook, June 2008 Update, Truckee Meadows Regional Stormwater Quality Management Program, June 2008. Complying with the Edwards Aquifer Rules Technical Guidance on Best Management Practices, Texas Commission on Environmental Quality, Revised July 2005, Addendum Sheet, January26, 2011. Stormwater Management Manual for Western Washington Volume II, Construction Stormwater Pollution Prevention, Washington State Department of Ecology, February 2005. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casga.org Agreement No. 6574 Compost Socksand'Ble a Description and Purpose Compost socks and berms act as three-dimensional biodegradable filtering structures to intercept runoff where sheet flow occurs and are generally placed at the site perimeter or at intervals on sloped areas. Compost socks are generally a mesh sock containing compost and a compost berm is a dike of compost, trapezoidal in cross section. When employed to intercept sheet flow, both BMPs are placed perpendicular to the flow of runoff, allowing filtered runoff to pass through the compost and retaining sediment (and potentially other pollutants). A compost sock can be assembled on site by filling a mesh sock (e.g. with a pneumatic blower). The compost berm should be constructed using a backhoe or equivalent and/or a pneumatic delivery (blower) system and should be properly compacted. Compost socks and berms act as filters, reduce runoff velocities, and in some cases, aid in establishing vegetation. Compost is organic, biodegradable, and renewable. Compost provides soil structure that allows water to infiltrate the compost medium which helps prevent rill erosion and the retained moisture promotes seed germination and vegetation growth, in addition to providing organic matter and nutrients important for fostering vegetation. Compost improves soil quality and productivity, as well as erosion and sediment control. Categories EC Erosion Control w.M.... ,., ,,..,..,....p SE Sediment Control Q TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: .-........_......... Q Primary Category ❑X Secondary Category Targeted Constituents Sediment Q Nutrients Trash Metals ❑x Bacteria ❑x Oil and Grease ❑x Organics Potential Alternatives ._W.- SE-1 Silt Fence SE-5 Fiber Roll SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-14 Biofilter Bags If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 8 Construction www.casga.org Agreement No. 6574 SocksCompost The compost of the compost sock or berm can be selected that targets site specific objectives in capturing sediment and other pollutants, supporting vegetation, or additional erosion control. Compost is typically derived from combinations of feedstocks, biosolids, leaf and yard trimmings, manure, wood, or mixed solid waste. Many types of compost are products of municipal recycle or "Green waste" programs. Compost is organic and biodegradable and can be left onsite. There are many types of compost with a variety of properties with specific functions, and accordingly compost selection is an important design consideration in the application of this type of erosion and sediment control. Suitable Applications • Along the toe, top, face, and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow (compost berms should only be used at the top of slopes or on slopes 4:1(H:V) or flatter, all other slope applications should use compost socks) • Along the perimeter of a project a As check dams in unlined ditches (compost socks only) • Down -slope of exposed soil areas • At operational storm drains as a form of inlet protection (compost socks only) • Around temporary stockpiles Compost socks and berms do not require special trenching or BMP removal compared to other sediment control methods (e.g. silt fence or fiber rolls). Compost socks and berms can remain in place after earth disturbing activities are completed or the compost components can be spread over the site providing nutrients for plant growth and augmenting soil structure. BMPs that remain in place are particularly advantageous below embankments, especially adjacent streams, by limiting re-entry and the disturbance to sensitive areas. Compost can be pre -seeded prior to application (recommended by the EPA for construction site stormwater runoff control and required for compost socks) or seeded after installation (for compost berms only). The compost medium can also remove pollutants in stormwater including heavy metals; oil and grease; and hydrocarbons. Limitations Compost can potentially leach nutrients (dissolved phosphorus and nitrogen) into runoff and potentially impact water quality. Compost should not be used directly upstream from nutrient impaired waterbodies (Adams et. al, 2oo8). w Compost may also contain other undesirable constituents that are detrimental to water quality. Compost should be obtained from a supplier certified by the California Integrated Waste Management Board or compost should otherwise meet the environmental health standards of Title 14, California Code of Regulations, Division 7, Chapter 3.1, Article 7. Carefully consider the qualifications and experience of any compost producer/supplier. December 2019 CASQA BMP Handbook 2 of 8 Construction www.casqa.org Agreement No. 6574 Application by hand is more time intensive and potentially costly. Using a pneumatic blower truck is the recommended cost-effective method of assembly. Compost socks and berms should not be employed at the base of slopes greater than 2:1 (H:V). They can be employed with other erosion control methods for steeper slopes. u Difficult to move once saturated. Compost berms should not be applied in areas of concentrated flows. m Compost socks and berms are easy to fix; however, they are susceptible to damage by frequent traffic. Compost socks can be used around heavy machinery, but regular disturbance decreases sock performance. Implementation Compost Materials a California Compost Regulations (Title 14, California Code of Regulations, Division 7, Chapter 3.1, Article 7, Section 17868.3) define and require a quality of compost for application. Compost should comply with all physical and chemical requirements. Specific requirements are provided in Table 1, taken from Caltrans Standard Specifications (2015). M The Caltrans SSP, Section 21-2.02Q, Compost Socks, states that the sock used to retain the compost must be composed of natural, biodegradable products, such as cotton, jute, sisal, burlap or coir. IN The compost producer should be fully permitted as specified under the California Integrated Waste Management Board, Local Enforcement Agencies and any other State and Local Agencies that regulate Solid Waste Facilities. If exempt from State permitting requirements, the composting facility should certify that it follows guidelines and procedures for production of compost meeting the environmental health standards of Title 14, California Code of Regulations, Division 7, Chapter 3.1, Article 7. n The compost producer should be a participant in United States Composting Council's Seal of Testing Assurance program. • Compost medium parameter specifications for compost socks and berms have been developed to assist in compost selection, such as those provided by the American Association of State Highway Transportation Officials (AASHTO). a Particle size is important parameter for selecting compost. Well consolidated, coarser grades of compost (e.g., small and large pieces) perform better for filtration objectives, while finer grades better support vegetation. Particle size of the compost should be selected based on site conditions, such as expected precipitation, and filtration goals and / or long-term plant nutrients. • Compost moisture should be considered for composition quality and application purposes. A range of 30-50% is typical. Compost that is too dry is hard to apply and compost that is too wet is more difficult (and more expensive) to transport. For and or semi -arid areas, or for application during the dry season, use compost with greater moisture content than areas with wetter climates. For wetter or more humid climates or for application during the wet December 2019 CASQA BMP Handbook 3 of 8 Construction www.casqa.org Agreement No. 6574 Compost and Berms SE-13 season, drier composts can be used as the compost will absorb moisture from the ambient air.. ® If vegetation establishment is a desired function of the compost, a compost sample should be inspected by a qualified individual. Vegetation has different nutrient and moisture needs. • Organic content of the compost is also important and should range from 30 to 65% depending on site conditions. • Compost should not be derived from mixed municipal solid waste and should be reasonably free of visible contaminates. • Compost should not contain paint, petroleum products, pesticides or any other chemical residues harmful to animal life or plant growth. Metal concentrations in compost should not exceed the maximum metal concentrations listed under Title 14, California Code of Regulations, Division 7, Chapter 3.1, Section 17868.2. ■ Compost should not possess objectionable odors. mi Compost should be weed free. December 2019 CASQA BMP Handbook 4 of 8 Construction www.casqa.org Agreement No. 6574 Compost Socks and Berms SE-13 Table 1. Physical/Chemical Requirements of Compost Cal Rr cd trans SSP so - _..._ Erosion Conh•ol Blanket (C� onlc�r �__�.... Prop??,, a Test Method . s —6 _— ...... ....... Requirement � . � �.. pH _... ........ TMECC 04.11-A 6 o-8 5 —.wd .._............ Soluble Salts —.mm.. TMECC o4.io-A.�. ....._........... _ 0-10.0 _....._—��........6 _ ... Moisture Content ��.� �......__�. TMECC 03.o9-A ... �._ ._.... 3o-60 _ _�..... __. Organic _._............ TMECC 05.0�7-A __�.... Content 30-100 Maturity TMECC 05.05-A 80 or Above 80 or Above Stability TMECC 05.o8-B 8 or below �.._ m...._ .. _ , Y _ _ ... aci size far fine compost: dry �vt.igh �� ..... __......_..._........ 95 Pass 5/8-inch sieve (min, %) TMECC 02.o2-B 70 Pass 8 ....cla sieve (n' 1 9ii) � _... m.m.... Particle size for medium : dr edium compost; dr}� weight _ ...... f 95 Pass 2-inch sieve (min, %) TMECC o2.o2-B 30 LParticle size for coarse compost: dry weight�� 99 Pass 2-1/2-inch sieve (min, %) TMECC o2.o2-B 40 w Pass�8-inch sieve (max, %) Pathogen Fecal Coliform Bacteria TMECC 0�7.ol-B < 1,000 dry wt. ................. Pathogen Salmonella TMECC o�.oi-B <3 4 grams dry wt. Physical Contaminants (% dry weight) TMECC 02.02-C Combined Total: Plastics, glass, and metal < 1.0 Physical ; } ants ._ ._....... —..... ....... ... (% dry weight)_.... TMECC 0202-C . None Detected refers "TestMethods for r t Examination of Composting and Compost," published by the United� �y States Department Agriculture t United Compost Council (USCC). Installation a Prior to application, prepare locations for socks and berms by removing brush and thick vegetation. The compost of the sock and/or berm should be allowed to come in full contact with the ground surface. ■ Select method to apply the compost sock or berm. A pneumatic blower is most cost effective and most adaptive in applying compost to steep, rough terrain, and hard to reach locations. The compost of the berm should be distributed evenly to the surface, compacted, and shaped trapezoidal in cross section. Berm design is generally consisting of a base two times the height. AASHTO specification MP 9-03 provides compost berm dimensions based on anticipated site precipitation (AASHTO, 2003 and USEPA, 2009). State agencies, such as Oregon Department of Environmental Quality (ODEQ) have developed berm dimension based on slope steepness and length (ODEQ, 2004). December 2019 CASQA BMP Handbook 5 of 8 Construction www.casga.org Agreement No. 6574 Compost Socks anid Berms SE-:1;3 Compost socks can be assembled on site by filling mesh socks with the selected compost. Mesh socks can be tied at one end, filled, and then tied at the other end. The ends of socks can be interlocked until the desired length is achieved. The sock diameter is a function of slope steepness and length. Again, ASSHTO provides specifications for various parameters. Compost socks range from 8" to 18" but arc typically 12" to 18" in diameter. a Compost socks are typically placed in contours perpendicular to sheet flow. They can also be placed in V formation on a slope. Compost socks need to be anchored, typically stakes, through the center of the sock. To prevent water flowing around them, the ends of compost socks should be placed upslope. n Locate compost socks and berms on level contours spaced as follows: - Slope inclination of 4:1(H:V) or flatter: Socks and/or berms should be placed at a maximum interval of 20 ft. - Slope inclination between 4:1 and 2:1(H:V): Socks should be placed at a maximum interval of 15 ft. (a closer spacing is more effective). - Slope inclination 2:1(H:V) or greater: Socks should be placed at a maximum interval of 10 ft. (a closer spacing is more effective). • Place perimeter socks and berms using a j-hook installation. Use of vegetation will also provide additional anchoring. ■ Compost socks and berms can be placed around the perimeter of an affected area, like a silt fence, if the area is flat or on a contour. Do not place these socks and berms where ponded water could become an issue. • If used at the toe of slopes, the compost sock or berm should at a minimum of 5 to 10 feet away. • Use additional anchoring and erosion control BMPs in conjunction of the compost socks and berms as needed. • Consider using compost berms or socks as necessary at the top and/or bottom of the slope for additional erosion control performance. • Compost socks and berms can also be effective over rocky and frozen ground if installed properly. • It is recommended that the drainage areas of these compost BMPs do not exceed 0.25 acre per too feet placement interval and runoff does not exceed 1 cubic foot per second. December 2019 CASQA BMP Handbook 6 of 8 Construction www.casqa.org Agreement No. 6574 Socksand B erms SE-13 Costs Recently obtained vendor costs indicated $4.50 per linear foot for compost berm application and $2.50 per linear foot for 8" socks and $3.20 per linear foot for 12"socks (Adjusted for inflation ,2o16 dollars, by Tetra Tech, Inc.). Costs do not include final compost sock or berm functions at the end of construction activities, including spreading or removal, if required. ODEQ estimates that compost berms cost 30 percent less than silt fences to install. Inspection and Maintenance a BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. n Once damage is identified, mend or reapply the sock or berm as needed. Washed out areas should be replaced. If the sock or berm height is breached during a storm, an additional sock can be stacked to increase the sock height and similarly the berm dimensions can be increased, as applicable. An additional sock or berm may be installed upslope, as needed. It may be necessary to apply an additional type of stormwater BMP, such as a compost blanket. ■ Sediment contained by the sock or berm should be removed prior reaching 1/3 of the exposed height of the BMP. The sediment can be stabilized with the compost sock or berm with vegetation at the end of construction activities. w Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require reapplication of BMPs. Limit traffic to minimize damage to BMPs or impede vegetation establishment. References An analysis of Composting as an Environmental Remediation Technology, U.S. Environmental Protection Agency (USEPA), Solid Waste and Emergency Response (5305W), EPA53o-R-8-oo8, 1998. Characteristics of Compost: Moisture Holding and Water Quality Improvement, Center for Research in Water Resources, Kirchoff, C., Malina, J., and Barrett, M., 2003. Compost Utilization for Erosion Control, The University of Georgia College of Agricultural and Environmental Sciences, pubs.caes.uga.edu/caespubs/pubcd/B120O.htm, Faucette, B. and Risse, M., 2001. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. Standard Specifications, State of California, California State Transportation Agency, Department of Transportation (Caltrans), 2015. Available online at: http: //www. dot. ca.gov/hq/esc/oe/construction_contract_standards/std_specs/ 2015_StdSpecs /2015_StdSpecs.pdf. December 2019 CASQA BMP Handbook 7 of 8 Construction www.casga.org Agreement No. 6574 Compost" Evaluation of Environmental Benefits and Impacts of Compost and Industry Standard Erosion and Sediment Controls Measures Used in Construction Activities, Dissertation, Institute of Ecology, University of Georgia, Faucette, B., 2004. National Pollutant Discharge Elimination System (NPDES), Compost Blankets, U.S. Environmental Protection Agency (USEPA). htt.: .e v n des stornlwater men uofb s index.cfm:�action-factsh t r suits&vie w sjpecifig&,hrnp=11 , 2009. Standard Specifications for Transportation Materials and Methods of Sampling and Testing, Designation MP-9, Compost for Erosion/Sediment Control (Filter Berms), Provisional, American Association of State Highway Transportation Officials (AASHTO), 2003. Stormwater Best Management Practices (BMPs) Field Trials of Erosion Control Compost in Reclamation of Rock Quarry Operations, Nonpoint Source Protection Program CWA §319(h), Texas Commission on Environmental Quality, Adams, T., McFarland, A., Hauck, L., Barrett, M., and Eck, B., 20o8. December 2019 CASQA BMP Handbook 8 of 8 Construction www.casqa.org Agreement No. 6574 Biloffiter11 I Categories EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: m................__................... 0 Primary Category ❑x Secondary Category 01 Description and Purpose ar9e ted Constituents Biofilter bags, or bio-bags, are a multi -purpose sediment Sediment control BMP consisting of a plastic mesh bag filled with l00% Nutrients recycled wood product waste. Biofilter bags come in a variety Trash of sizes (30" x 18" and 30" x 9" being common) and generally Metals have between 1-2 cubic yards of recycled wood waste (or wood Bacteria chips). Biofilter bags work by detaining flow and allowing a Oil and Grease slow rate of discharge through the wood media. This action Organics removes suspended sediment through gravity settling of the detained water and filtration within the bag.Mti w-----,•-�mmmmm�m��a, Potential Alternatives Suitable Applications,,,,n,a........._......,,,o..... nn... SE-1 Silt Fence Biofilter bags are a short-term BMP that can be rapidly deployed, maintained, and replaced. Biofilter bags can be an SE 4 Check Dams effective short-term solution to place in developed rills to SE-5 Fiber Roll prevent further erosion until permanent measures can be SE-6 Gravel Bag Berm established. Suitable short-term applications include: SE-8 Sandbag Barrier s As a linear sediment control measure: SE-10 Storm Drain Inlet Protection Below the toe of slopes and erodible slopes — p p If. User/Subscriber modifies this fact sheet in any way, the CASQA — Below other small cleared areas name/logo and footer below must be removed from each page and not - Along the perimeter of a site (with low -expected flow) appear on the modified version. - Down slope of exposed soil areas - Around temporary stockpiles and spoil areas - Parallel to a roadway to keep sediment off paved areas December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 r Bags, �i rr o', r -- Along streams and channels As linear erosion control measure: Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow - At the top of slopes to divert runoff away from disturbed slopes - As check dams across mildly sloped construction roads Inlet Protection (See SE-1o) a Supplement to silt fences or other sediment control devices Limitations mi Short life -span (maximum usefulness of 2-3 months and should be replaced more frequently if needed); regular maintenance and replacement required to ensure effectiveness. Bags will rapidly fill with sediment and reduce permeability. • Easily damaged by construction vehicles. m If not properly staked, will fail on slope applications. • If improperly installed can allow undercutting or side -cutting flow. • Not effective where water velocities or volumes are high. • Potentially buoyant and easily displaced if not properly installed. Implementation General Biofilter bags are a relatively low cost temporary BMP that are easily deployed and have a simple installation that can be performed by hand. Without proper installation, however, biofilter bags can fail due to their light weight, potential displacement, and multiple joint locations. One of the benefits of utilizing biofilter bags is that the media (wood -product) can be recycled or used onsite when no longer needed (where acceptable). Design and Layout — Linear control ■ Locate biofilter bags on level contours. - Slopes between 20:1 and 4:1 (H:V): Biofilter bags should be placed at a maximum interval of 20 ft, with the first row near the slope toe. - Slopes between 4:1 and 2:1 (H:V): Biofilter bags should be placed at a maximum interval Of 15 ft, with the first row near the slope toe. - Slopes 2:1(H:V) or steeper: Biofilter bags should be placed at a maximum interval of 10 ft., with the first row placed the slope toe. December 2019 CASQA BMP Handbook Construction 2 of 3 www.casga.org Agreement No. 6574 B o' a Turn the ends of the biofilter bag barriers up slope to prevent runoff from going around the berm. Allow sufficient space up slope from the biofilter bag berm to allow ponding, and to provide room for sediment storage. m Stake biofilter bags into a 1 to 2 in. deep trench with a width equal to the bag. - Drive one stake at each end of the bag. - Use wood stakes with a nominal classification of 0.75 by o.75 in. and minimum length of 24 in. ■ Biofilter bags should be overlapped (6 in.), not abutted. Costs Pre -filled biofilter bags cost approximately $3.20-$4.50 per bag, dependent upon size (Adjusted for inflation, 2016 dollars, by Tetra Tech, Inc.). Inspection and Maintenance mi BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ® Biofilter bags exposed to sunlight will need to be replaced every two to three months due to degrading of the bags. • Reshape or replace biofilter bags as needed. • Repair washouts or other damage as needed. • Sediment that is retained by the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. ■ Remove biofilter bag berms when no longer needed. Remove sediment accumulation and clean, re -grade, and stabilize the area. Biofilter media may be used on -site, if allowed. References Catalog of Stormwater Best Management Practices for Idaho Cities and Counties. Volume 2, Section 7, BMP 34 — Biofilter Bags, Idaho Department of Environmental Quality, 2005. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Stabilized s c io ra ce/ xi Description and Purpose A stabilized construction access is defined by a point of entrance/exit to a construction site that is stabilized to reduce the tracking of mud and dirt onto public roads by construction vehicles. Suitable Applications Use at construction sites: a Where dirt or mud can be tracked onto public roads. a Adjacent to water bodies. in Where poor soils are encountered. a Where dust is a problem during dry weather conditions, Limitations a Entrances and exits require periodic top dressing with additional stones. a This BMP should be used in conjunction with street sweeping on adjacent public right of way. a Entrances and exits should be constructed on level ground only. a Stabilized construction entrances are rather expensive to construct and when a wash rack is included, a sediment trap of some kind must also be provided to collect wash water runoff. Categories EC M..�m,.�..�..�. ErosionControl SE Sediment Control ❑x TC Tracking Control Q WE Wind Erosion Control NS Non-Stormwater Management Control Waste Management and WM Materials Pollution Control _._. ..................... Legend: Q Primary Objective Secondary Objective Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives ..None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version,. (AR WWUkS.V'A &OTA December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 Stabilized Construction Entrance/Exit TC-1 Implementation General A stabilized construction entrance is a pad of aggregate underlain with filter cloth located at any point where traffic will be entering or leaving a construction site to or from a public right of way, street, alley, sidewalk, or parking area. The purpose of a stabilized construction entrance is to reduce or eliminate the tracking of sediment onto public rights of way or streets. Reducing tracking of sediments and other pollutants onto paved roads helps prevent deposition of sediments into local storm drains and production of airborne dust. Where traffic will be entering or leaving the construction site, a stabilized construction entrance should be used. NPDES permits require that appropriate measures be implemented to prevent tracking of sediments onto paved roadways, where a significant source of sediments is derived from mud and dirt carried out from unpaved roads and construction sites. Stabilized construction entrances are moderately effective in removing sediment from equipment leaving a construction site. The entrance should be built on level ground. Advantages of the Stabilized Construction Entrance/Exit is that it does remove some sediment from equipment and serves to channel construction traffic in and out of the site at specified locations. Efficiency is greatly increased when a washing rack is included as part of a stabilized construction entrance/exit. Design and Layout • Construct on level ground where possible. • Select 3 to 6 in. diameter stones. • Use minimum depth of stones of 12 in. or as recommended by soils engineer. • Construct length of 50 ft or maximum site will allow, and 10 ft minimum width or to accommodate traffic. ■ Rumble racks constructed of steel panels with ridges and installed in the stabilized entrance/exit will help remove additional sediment and to keep adjacent streets clean. • Provide ample turning radii as part of the entrance. s Limit the points of entrance/exit to the construction site. • Limit speed of vehicles to control dust. • Properly grade each construction entrance/exit to prevent runoff from leaving the construction site. • Route runoff from stabilized entrances/exits through a sediment trapping device before discharge. ■ Design stabilized entrance/exit to support heaviest vehicles and equipment that will use it December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Stabilizedns r_ctilon Entrance/Exit T'C- , u Select construction access stabilization (aggregate, asphaltic concrete, concrete) based on longevity, required performance, and site conditions. Do not use asphalt concrete (AC) grindings for stabilized construction access/roadway. m If aggregate is selected, place rrnshed aggregate over geotextile fabric to at least 12 in. depth, or place aggregate to a depth recommended by a geotechnical engineer. A crushed aggregate greater than 3 in. but smaller than 6 in. should be used. i Designate combination or single purpose entrances and exits to the construction site. Require that all employees, subcontractors, and suppliers utilize the stabilized construction access. • Implement SE-7, Street Sweeping and Vacuuming, as needed. • All exit locations intended to be used for more than a two -week period should have stabilized construction entrance/exit BMPs. Inspection and Maintenance A Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMPs are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect local roads adjacent to the site daily. Sweep or vacuum to remove visible accumulated sediment. Remove aggregate, separate and dispose of sediment if construction entrance/exit is clogged with sediment. • Keep all temporary roadway ditches clear. • Check for damage and repair as needed. • Replace gravel material when surface voids are visible. • Remove all sediment deposited on paved roadways within 24 hours. ■ Remove gravel and filter fabric at completion of construction Costs Average annual cost for installation and maintenance may vary from $1,500 to $6,10o each, averaging $3,10O per entrance. Costs will increase with addition of washing rack and sediment trap. With wash rack, costs range from $1,500 - $7,7Oo each, averaging $4,6O0 per entrance (All costs adjusted for inflation, 2016 dollars, by Tetra Tech Inc. References Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• December 2019 CASQA BMP Handbook 3 of 6 Construction www.casga.org Agreement No. 6574 National Management Measures to Control Nonpoint Source Pollution from Urban Areas, USEPA Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation and Recreation, Division of Soil and Water Conservation, 1991. Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters, EPA 84o-B-9-oo2, USEPA, Office of Water, Washington, DC, 1993• Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 Match (2) On small sites length should be the Existing Grade PLAN WM— Stabilized ns r c i n r c/ xi Crushed aggregate greater than 3" but smaller than fi° Filter fabric Original t grgde 12 " Min, unless otherwise specified by a sails engineer SECTION B—B Rm NOTE- Construct sediment barrier and channeiiae runoff to sediment trapping device (1) Length should be extended to 12 times the diameter of the largest construction vehicle tire. maximum allowed by site. 10'min or as required to accornodate anticipated traffic, whichever is greater December 2019 CASQA BMP Handbook 5 of 6 Construction www.casga.org Agreement No. 6574 Stabilized nstruct' on ntranc _ / xi Crushed aggregate greater than 3" but smnaller than E", Filter fabric original grade 12" Min, unless otherwise specified by a soils engineer SECTION 8—S TMF Crushed aggregate greater than 3" but smaller than 6". Corrugated steel panels 12" Mir:, unless otherwise specified by a soils engineer Filter fabric NOTE: Construct sediment barrier and chonn line runoff to sediment trapping device ra SECTION A ----A �Sediment trapping device gI" . panels 6� AA WAII aas required to — c,• *yM .� anticipated traffic, whichever Is cireater. or max allowed Ey —site G shoulddiameter the argest construction vehicle tire. ME NEW M- PLAN December 2019 CASQA BMP Handbook 6 of 6 Construction www.casga.org Agreement No. 6574 Stabilized Construction R"' . . Description and Purpose Access roads, subdivision roads, parking areas, and other onsite vehicle transportation routes should be stabilized immediately after grading, and frequently maintained to prevent erosion and control dust. Suitable Applications This BMP should be applied for the following conditions: Temporary Construction Traffic: - Phased construction projects and offsite road access Construction during wet weather a Construction roadways and detour roads: - Where mud tracking is a problem during wet weather - Where dust is a problem during dry weather - Adjacent to water bodies - Where poor soils are encountered Limitations a The roadway must be removed or paved when construction is complete. Categories EC Erosion Control x❑ SE Sediment Control TC Tracking Control 0 WE Wind Erosion Control Non-Stormwater NS Management Control Waste Management and WM Materials Pollution Control Legend: 0 Primary Objective ❑x Secondary Objective Targeted Constituents Sediment C�J Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies thi.wW,d.ww�,.rt s fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. m, ��mwum�m�akmnm,n7m«wmmmma December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 Stabollized Construction Roadway TC-2; • Certain chemical stabilization methods may cause stormwater or soil pollution and should not be used. See WE-1, Wind Erosion Control. s Management of construction traffic is subject to air quality control measures. Contact the local air quality management agency. ml Materials will likely need to be removed prior to final project grading and stabilization. a Use of this BMP may not be applicable to very short duration projects. Implementation General Areas that are graded for construction vehicle transport and parking purposes are especially susceptible to erosion and dust. The exposed soil surface is continually disturbed, leaving no opportunity for vegetative stabilization. Such areas also tend to collect and transport runoff waters along their surfaces. During wet weather, they often become muddy quagmires that generate significant quantities of sediment that may pollute nearby streams or be transported offsite on the wheels of construction vehicles. Dirt roads can become so unstable during wet weather that they are virtually unusable. Efficient construction road stabilization not only reduces onsite erosion but also can significantly speed onsite work, avoid instances of immobilized machinery and delivery vehicles, and generally improve site efficiency and working conditions during adverse weather Installation/Application Criteria Permanent roads and parking areas should be paved as soon as possible after grading. As an alternative where construction will be phased, the early application of gravel or chemical stabilization may solve potential erosion and stability problems. Temporary gravel roadway should be considered during the rainy season and on slopes greater than 5%. Temporary roads should follow the contour of the natural terrain to the maximum extent possible. Slope should not exceed 15%. Roadways should be carefully graded to drain transversely. Provide drainage swales on each side of the roadway in the case of a crowned section or one side in the case of a super elevated section. Simple gravel berms without a trench can also be used. Installed inlets should be protected to prevent sediment laden water from entering the storm sewer system (SE-1o, Storm Drain Inlet Protection). In addition, the following criteria should be considered. ■ Road should follow topographic contours to reduce erosion of the roadway. • The roadway slope should not exceed 15%. ■ Chemical stabilizers or water are usually required on gravel or dirt roads to prevent dust (WE-1, Wind Erosion Control). • Properly grade roadway to prevent runoff from leaving the construction site. • Design stabilized access to support heaviest vehicles and equipment that will use it. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 • Stabilize roadway using aggregate, asphalt concrete, or concrete based on longevity, required performance, and site conditions. The use of cold mix asphalt or asphalt concrete (AC) grindings for stabilized construction roadway is not allowed. • Coordinate materials with those used for stabilized construction entrance/exit points. • If aggregate is selected, place crushed aggregate over geotextile fabric to at least 12 in. depth. A crushed aggregate greater than 3 in. but smaller than 6 in. should be used. Inspection and Maintenance • Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Keep all temporary roadway ditches clear. • When no longer required, remove stabilized construction roadway and re -grade and repair slopes. • Periodically apply additional aggregate on gravel roads. ■ Active dirt construction roads are commonly watered three or more times per day during the dry season. Costs Gravel construction roads are moderately expensive, but cost is often balanced by reductions in construction delay. No additional costs for dust control on construction roads should be required above that needed to meet local air quality requirements. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casga.org Agreement No. 6574 Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation and Recreation, Division of Soil and Water Conservation, 1991. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Description and Purpose A tire wash is an area located at stabilized construction access points to remove sediment from tires and under carriages and to prevent sediment from being transported onto public roadways. Suitable Applications Tire washes maybe used on construction sites where dirt and mud tracking onto public roads by construction vehicles may occur. Limitations a The tire wash requires a supply of wash water,. a A turnout or doublewide exit is required to avoid having entering vehicles drive through the wash area. a Do not use where wet tire trucks leaving the site leave the road dangerously slick. Implementation a Incorporate with a stabilized construction entrance/exit. See TC-1, Stabilized Construction Entrance/Exit. a Construct on level ground when possible, on a pad of coarse aggregate greater than 3 in. but smaller than 6 in. A geotextile fabric should be placed below the aggregate. a Wash rack should be designed and constructed/manufactured for anticipated traffic loads. TC-3 Categories EC Erosion Control SE Sediment Control ❑p TC Tracking Control Q WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control _ ................................ Legend: Q Primary Objective ❑x Secondary Objective Targeted Constituents Sediment Q Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives TC-1 Stabilized Construction Entrance/Exit If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 • Provide a drainage ditch that will convey the runoff from the wash area to a sediment trapping device. The drainage ditch should be of sufficient grade, width, and depth to carry the wash runoff. ■ Use hoses with automatic shutoff nozzles to prevent hoses from being left on. • Require that all employees, subcontractors, and others that leave the site with mud caked tires and undercarriages to use the wash facility. u Implement SC-7, Street Sweeping and Vacuuming, as needed. Costs Costs are low for installation of wash rack. Inspection and Maintenance ■ Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. • Remove accumulated sediment in wash rack and/or sediment trap to maintain system performance. m Inspect routinely for damage and repair as needed. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995• Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 Entrance/Outlet Tire Wash TC-3 Ditch \o cor,y ,unoff —� to o s�dirn�n� �/o�p�ng device i ~�~ \ ^~� ~ T oecemberzozy CA50A BMpHanUboox 3vf3 Construction w~wzasqa.ung Agreement No. 6574 Wind Erosion Control Description and Purpose Wind erosion or dust control consists of applying water or other chemical dust suppressants as necessary to prevent or alleviate dust nuisance generated by construction activities. Covering small stockpiles or areas is an alternative to applying water or other dust palliatives. California's Mediterranean climate, with a short "wet" season and a typically long, hot "dry" season, allows the soils to thoroughly dry out. During the dry season, construction activities are at their peak, and disturbed and exposed areas are increasingly subject to wind erosion, sediment tracking, and dust generated by construction equipment. Site conditions and climate can make dust control more of an erosion problem than water -based erosion. Additionally, many local agencies, including Air Quality Management Districts, require dust control and/or dust control permits in order to comply with local nuisance laws, opacity laws (visibility impairment) and the requirements of the Clean Air Act. Wind erosion control is required to be implemented at all construction sites greater than 1 acre by the General Permit. Suitable Applications Most BMPs that provide protection against water -based erosion will also protect against wind -based erosion and dust control requirements required by other agencies will generally meet wind erosion control requirements for water quality protection. Wind erosion control BMPs are suitable during the following construction activities: Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: ..............._.................�_... 0 Primary Category 0 Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics -61 701 Potential Alternatives EC-5 Soil Binders.�..ww���.�.�......,,��, If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 5 Construction www.casqa.org Agreement No. 6574 ControlWind Erosion 11 Construction vehicle traffic on unpaved roads a, Drilling and blasting activities • Soils and debris storage piles • Batch drop from front-end loaders • Areas with unstabilized soil Final grading/site stabilization Limitations • Watering prevents dust only for a short period (generally less than a few hours) and should be applied daily (or more often) to be effective. • Over watering may cause erosion and track -out. • Oil or oil -treated subgrade should not be used for dust control because the oil may migrate into drainageways and/or seep into the soil. a• Chemical dust suppression agents may have potential environmental impacts. Selected chemical dust control agents should be environmentally benign. m Effectiveness of controls depends on soil, temperature, humidity, wind velocity and traffic. • Chemical dust suppression agents should not be used within loo feet of wetlands or water bodies. • Chemically treated subgrades may make the soil water repellant, interfering with long-term infiltration and the vegetation/re-vegetation of the site. Some chemical dust suppressants may be subject to freezing and may contain solvents and should be handled properly. ■ In compacted areas, watering and other liquid dust control measures may wash sediment or other constituents into the drainage system. • If the soil surface has minimal natural moisture, the affected area may need to be pre -wetted so that chemical dust control agents can uniformly penetrate the soil surface. Implementation Dust Control Practices Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or track dust particles. The following table presents dust control practices that can be applied to varying site conditions that could potentially cause dust. For heavily traveled and disturbed areas, wet suppression (watering), chemical dust suppression, gravel asphalt surfacing, temporary gravel construction entrances, equipment wash -out areas, and haul truck covers can be employed as dust control applications. Permanent or temporary vegetation and mulching can be employed for areas of occasional or no construction traffic. Preventive measures include minimizing surface areas to be disturbed, limiting onsite vehicle traffic to 15 mph or less, and controlling the number and activity of vehicles on a site at any given time. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 Wind Erosion Control WE-J1 Chemical dust suppressants include: mulch and fiber based dust palliatives (e.g. paper mulch with gypsum binder), salts and brines (e.g. calcium chloride, magnesium chloride), non - petroleum based organics (e.g. vegetable oil, lignosulfonate), petroleum based organics (e.g. asphalt emulsion, dust oils, petroleum resins), synthetic polymers (e.g. polyvinyl acetate, vinyl, acrylic), clay additives (e.g. bentonite, montmorillonite) and electrochemical products (e.g. enzymes, ionic products). ............... Dust Control ..... ��..�._ ......� Slte Wet Chemical Gravel Temporary Gravel Minimize C4Dalt70n Permanent Construction Synthetic Extent of Mulching Suppression Dust or Vegetation (Watering) Suppression Asphalt Entrances/Equipment Covers Disturbed Wash Down Area Di�Ett d, gssnot- , X x X x X x �ubjec[to ;' 'Tl afii��� j*98 / Aloes ,s,tujEkn X X X x 0 %ii74��a„1t 7 X X X X X �t{fcltpf ee; DemoUhons X X X ,w.............�_...w,e.,.., ................ ,...----,� ----------------- ..,._.........�...,.... ,.,.._...... ......_....... tW"" J. X X Tistre)C / X X X X X of �o ioi,f:. Additional preventive measures include: • Schedule construction activities to minimize exposed area (see EC-1, Scheduling). ■ Quickly treat exposed soils using water, mulching, chemical dust suppressants, or stone/gravel layering. • Identify and stabilize key access points prior to commencement of construction. • Minimize the impact of dust by anticipating the direction of prevailing winds. • Restrict construction traffic to stabilized roadways within the project site, as practicable. • Water should be applied by means of pressure -type distributors or pipelines equipped with a spray system or hoses and nozzles that will ensure even distribution. r All distribution equipment should be equipped with a positive means of shutoff. • Unless water is applied by means of pipelines, at least one mobile unit should be available at all times to apply water or dust palliative to the project. a If reclaimed waste water is used, the sources and discharge must meet California Department of Health Services water reclamation criteria and the Regional Water Quality December 2019 CASQA BMP Handbook 3 of 5 Construction www.casga.org Agreement No. 6574 Wind Erosion Control Board (RWQCB) requirements. Non -potable water should not be conveyed in tanks or drain pipes that will be used to convey potable water and there should be no connection between potable and non -potable supplies. Non -potable tanks, pipes, and other conveyances should be marked, "NON -POTABLE WATER - DO NOT DRINK." ■ Pave or chemically stabilize access points where unpaved traffic surfaces adjoin paved roads. Provide covers for haul trucks transporting materials that contribute to dust. w Provide for rapid clean up of sediments deposited on paved roads. Furnish stabilized construction road entrances and wheel wash areas. i Stabilize inactive areas of construction sites using temporary vegetation or chemical stabilization methods. For chemical stabilization, there are many products available for chemically stabilizing gravel roadways and stockpiles. If chemical stabilization is used, the chemicals should not create any adverse effects on stormwater, plant life, or groundwater and should meet all applicable regulatory requirements. Costs Installation costs for water and chemical dust suppression vary based on the method used and the length of effectiveness. Annual costs may be high since some of these measures are effective for only a few hours to a few days. Inspection and Maintenance Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Check areas protected to ensure coverage. Most water -based dust control measures require frequent application, often daily or even multiple times per day. Obtain vendor or independent information on longevity of chemical dust suppressants. References Best Management Practices and Erosion Control Manual for Construction Sites, Flood Control District of Maricopa County, Arizona, September 1992. California Air Pollution Control Laws, California Air Resources Board, updated annually. Construction Manual, Chapter 4, Section 10, "Dust Control"; Section 17, "Watering"; and Section 18, "Dust Palliative", California Department of Transportation (Caltrans), July 2001. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casqa.org Agreement No. 6574 Wiind Erosion Prospects for Attaining the State Ambient Air Quality Standards for Suspended Particulate Matter (PMio), Visibility Reducing Particles, Sulfates, Lead, and Hydrogen Sulfide, California Air Resources Board, April 1991. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. December 2019 CASQA BMP Handbook 5 of 5 Construction www.casqa.org Agreement No. 6574 Delivery and Storage M Description and Purpose Prevent, reduce, or eliminate the discharge of pollutants from material delivery and storage to the stormwater system or watercourses by minimizing the storage of hazardous materials onsite, storing materials in watertight containers and/or a completely enclosed designated area, installing secondary containment, conducting regular inspections, and training employees and subcontractors. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control INS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control ........................ Legend: Q Primary Category ® Secondary Category TargetedConstituents Sediment Q Nutrients Q Trash Q Metals Q Bacteria Oil and Grease Q Organics Q This best management practice covers only material delivery and storage. For other information on materials, see WM-2, potential Alternatives Material Use, or WM-4, Spill Prevention and Control. For......... information on wastes, see the waste management BMPs in this None section. Suitable Applications These procedures are suitable for use at all construction sites with delivery and storage of the following materials: • Soil stabilizers and binders • Pesticides and herbicides s Fertilizers • Detergents Plaster 91 Petroleum products such as fuel, oil, and grease If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 5 Construction www.casga.org Agreement No. 6574 Material liar r t ra_ I_ s Asphalt and concrete components • Hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing compounds • Concrete compounds • Other materials that may be detrimental if released to the environment Limitations Space limitation may preclude indoor storage. is Storage sheds often must meet building and fire code requirements. Implementation The following steps should be taken to minimize risk: • Chemicals must be stored in water tight containers with appropriate secondary containment or in a storage shed. • When a material storage area is located on bare soil, the area should be lined and bermed. ■ Use containment pallets or other practical and available solutions, such as storing materials within newly constructed buildings or garages, to meet material storage requirements. • Stack erodible landscape material on pallets and cover when not in use. ■ Contain all fertilizers and other landscape materials when not in use. ■ Temporary storage areas should be located away from vehicular traffic. • Material Safety Data Sheets (MSDS) should be available on -site for all materials stored that have the potential to effect water quality. • Construction site areas should be designated for material delivery and storage. ■ Material delivery and storage areas should be located away from waterways, if possible. - Avoid transport near drainage paths or waterways. - Surround with earth berms or other appropriate containment BMP. See EC-9, Earth Dikes and Drainage Swales. - Place in an area that will be paved. • Storage of reactive, ignitable, or flammable liquids must comply with the fire codes of your area. Contact the local Fire Marshal to review site materials, quantities, and proposed storage area to determine specific requirements. See the Flammable and Combustible Liquid Code, NFPA3o. ml An up to date inventory of materials delivered and stored onsite should be kept. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 Material Delivery a • Hazardous materials storage onsite should be minimized. • Hazardous materials should be handled as infrequently as possible. • Keep ample spill cleanup supplies appropriate for the materials being stored. Ensure that cleanup supplies are in a conspicuous, labeled area. • Employees and subcontractors should be trained on the proper material delivery and storage practices. • Employees trained in emergency spill cleanup procedures must be present when dangerous materials or liquid chemicals are unloaded. ■ If significant residual materials remain on the ground after construction is complete, properly remove and dispose of materials and any contaminated soil. See WM-7, Contaminated Soil Management. If the area is to be paved, pave as soon as materials are removed to stabilize the soil. Material Storage Areas and Practices Liquids, petroleum products, and substances listed in 40 CFR Parts 110, 117, or 302 should be stored in approved containers and drums and should not be overfilled. Containers and drums should be placed in temporary containment facilities for storage. im A temporary containment facility should provide for a spill containment volume able to contain precipitation from a 25-year storm event, plus the greater of lo% of the aggregate volume of all containers or l00% of the capacity of the largest container within its boundary, whichever is greater. • A temporary containment facility should be impervious to the materials stored therein for a minimum contact time of 72 hours. ■ A temporary containment facility should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be collected and placed into drums. These liquids should be handled as a hazardous waste unless testing determines them to be non -hazardous. All collected liquids or non -hazardous liquids should be sent to an approved disposal site. w Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access. ■ Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility. in Materials should be covered prior to, and during rain events. Materials should be stored in their original containers and the original product labels should be maintained in place in a legible condition. Damaged or otherwise illegible labels should be replaced immediately. December 2019 CASQA BMP Handbook 3 of 5 Construction www.casqa.org Agreement No. 6574 Materinal Deliveryand Storage WM-i • Bagged and boxed materials should be stored on pallets and should not be allowed to accumulate on the ground. To provide protection from wind and rain throughout the rainy season, bagged and boxed materials should be covered during non -working days and prior to and during rain events. • Stockpiles should be protected in accordance with WM-3, Stockpile Management. • Materials should be stored indoors within existing structures or completely enclosed storage sheds when available. ■ Proper storage instructions should be posted at all times in an open and conspicuous location. An ample supply of appropriate spill clean up material should be kept near storage areas. r Also see WM-6, Hazardous Waste Management, for storing of hazardous wastes. Material Delivery Practices ® Keep an accurate, up-to-date inventory of material delivered and stored onsite. • Arrange for employees trained in emergency spill cleanup procedures to be present when dangerous materials or liquid chemicals are unloaded. Spill Cleanup 01 Contain and clean up any spill immediately. ■ Properly remove and dispose of any hazardous materials or contaminated soil if significant residual materials remain on the ground after construction is complete. See WM-7, Contaminated Soil Management. • See WM-4, Spill Prevention and Control, for spills of chemicals and/or hazardous materials. A If spills or leaks of materials occur that are not contained and could discharge to surface waters, non -visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required. Cost ■ The largest cost of implementation may be in the construction of a materials storage area that is covered and provides secondary containment. Inspection and Maintenance BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. a Keep storage areas clean and well organized, including a current list of all materials onsite. a Inspect labels on containers for legibility and accuracy. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casqa.org Agreement No. 6574 Material,: Storage im Repair or replace perimeter controls, containment structures, covers, and liners as needed to maintain proper function. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92O05; USEPA, April 1992. December 2019 CASQA BMP Handbook 5 of 5 Construction www.casga.org Agreement No. 6574 Material Use WMI-2 Description and Purpose Prevent or reduce the discharge of pollutants to the storm drain system or watercourses from material use by using alternative products, minimizing hazardous material use onsite, and training employees and subcontractors. Suitable Applications This BMP is suitable for use at all construction projects. These procedures apply when the following materials are used or prepared onsite: Pesticides and herbicides In Fertilizers In Detergents s, Petroleum products such as fuel, oil, and grease s Asphalt and other concrete components • Other hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing compounds • Other materials that may be detrimental if released to the environment Categories EC Erosion Control SE Sediment Control TIC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Q Materials Pollution Control Legend: Q Primary Category 0 Secondary Category Targeted Constituents Sediment ��.. Nutrients Nutrients Q Trash Q Metals Q Bacteria Oil and Grease Q Organics Q Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. wu wplm11�M'mmot December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 Material Use MA-2 Limitations Safer alternative building and construction products may not be available or suitable in every instance. Implementation The following steps should be taken to minimize risk: • Minimize use of hazardous materials onsite. ■, Follow manufacturer instructions regarding uses, protective equipment, ventilation, flammability, and mixing of chemicals. ■i Train personnel who use pesticides. The California Department of Pesticide Regulation and county agricultural commissioners license pesticide dealers, certify pesticide applicators, and conduct onsite inspections. x The preferred method of termiticide application is soil injection near the existing or proposed structure foundation/slab; however, if not feasible, soil drench application of termiticides should follow EPA label guidelines and the following recommendations (most of which are applicable to most pesticide applications): ■ Do not treat soil that is water -saturated or frozen. ® Application shall not commence within 24-hours of a predicted precipitation event with a 40% or greater probability. Weather tracking must be performed on a daily basis prior to termiticide application and during the period of termiticide application. ml Do not allow treatment chemicals to runoff from the target area. Apply proper quantity to prevent excess runoff. Provide containment for and divert stormwater from application areas using berms or diversion ditches during application. • Dry season: Do not apply within io feet of storm drains. Do not apply within 25 feet of aquatic habitats (such as, but not limited to, lakes; reservoirs; rivers; permanent streams; marshes or ponds; estuaries; and commercial fish farm ponds). • Wet season: Do not apply within 50 feet of storm drains or aquatic habitats (such as, but not limited to, lakes; reservoirs; rivers; permanent streams; marshes or ponds; estuaries; and commercial fish farm ponds) unless a vegetative buffer is present (if so, refer to dry season requirements). ■ Do not make on -grade applications when sustained wind speeds are above io mph (at application site) at nozzle end height. ■u Cover treatment site prior to a rain event in order to prevent run-off of the pesticide into non -target areas. The treated area should be limited to a size that can be backfilled and/or covered by the end of the work shift. Backfilling or covering of the treated area shall be done by the end of the same work shift in which the application is made. • The applicator must either cover the soil him/herself or provide written notification of the above requirement to the contractor on site and to the person commissioning the December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 aterial e application (if different than the contractor). If notice is provided to the contractor or the person commissioning the application, then they are responsible under the Federal Insecticide Fungicide, and Rodenticide Act (FIFRA) to ensure that: 1) if the concrete slab cannot be poured over the treated soil within 24 hours of application, the treated soil is covered with a waterproof covering (such as polyethylene sheeting), and 2) the treated soil is covered if precipitation is predicted to occur before the concrete slab is scheduled to be poured. Do not over -apply fertilizers, herbicides, and pesticides. Prepare only the amount needed. Follow the recommended usage instructions. Over -application is expensive and environmentally harmful. Unless on steep slopes, till fertilizers into the soil rather than hydraulic application. Apply surface dressings in several smaller applications, as opposed to one large application, to allow time for infiltration and to avoid excess material being carried offsite by runoff. Do not apply these chemicals before predicted rainfall. • Train employees and subcontractors in proper material use. • Supply Material Safety Data Sheets (MSDS) for all materials. ■ Dispose of latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths, when thoroughly dry and are no longer hazardous, with other construction debris. ■ Do not remove the original product label; it contains important safety and disposal information. Use the entire product before disposing of the container. • Mix paint indoors or in a containment area. Never clean paintbrushes or rinse paint containers into a street, gutter, storm drain, or watercourse. Dispose of any paint thinners, residue, and sludge(s) that cannot be recycled, as hazardous waste. • For water -based paint, clean brushes to the extent practicable, and rinse to a drain leading to a sanitary sewer where permitted or contain for proper disposal off site. For oil -based paints, clean brushes to the extent practicable, and filter and reuse thinners and solvents. e Use recycled and less hazardous products when practical. Recycle residual paints, solvents, non -treated lumber, and other materials. • Use materials only where and when needed to complete the construction activity. Use safer alternative materials as much as possible. Reduce or eliminate use of hazardous materials onsite when practical. • Document the location, time, chemicals applied, and applicator's name and qualifications. • Keep an ample supply of spill clean up material near use areas. Train employees in spill clean up procedures. ■ Avoid exposing applied materials to rainfall and runoff unless sufficient time has been allowed for them to dry. • Discontinue use of erodible landscape material within 2 days prior to a forecasted rain event and materials should be covered and/or bermed. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casga.org Agreement No. 6574 Material a Provide containment for material use areas such as masons' areas or paint mixing/preparation areas to prevent materials/pollutants from entering stormwater, Costs All of the above are low cost measures. Inspection and Maintenance n Inspect and verify that activity -based BMPs are in place prior to the commencement of associated activities. BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. a Ensure employees and subcontractors throughout the job are using appropriate practices. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992. Comments on Risk Assessments Risk Reduction Options for Cypermethrin: Docket No. OPP- 2005-0293; California Stormwater Quality Association (CASQA) letter to USEPA, 2oo6.Environmental Hazard and General Labeling for Pyrethroid Non -Agricultural Outdoor Products, EPA-HQ-OPP-2008-0331-0021; USEPA, 2008. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casga.org Agreement No. 6574 Stockpile "" Description and Purpose Stockpile management procedures and practices are designed to reduce or eliminate air and stormwater pollution from stockpiles of soil, soil amendments, sand, paving materials such as Portland cement concrete (PCQ rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate sub base or pre -mixed aggregate, asphalt minder (so called "cold mix" asphalt), and pressure treated wood. Suitable Applications Implement in all projects that stockpile soil and other loose materials. Limitations Plastic sheeting as a stockpile protection is temporary and hard to manage in windy conditions. Where plastic is used, consider use of plastic tarps with nylon reinforcement which may be more durable than standard sheeting. s Plastic sheeting can increase runoff volume due to lack of infiltration and potentially cause perimeter control failure. Plastic sheeting breaks down faster in sunlight. a The use of Plastic materials and photodegradable plastics should be avoided. Implementation Protection of stockpiles is a year-round requirement. To properly manage stockpiles: Treat Categories EC E_ �,���..��.�o w'..... ... ..... sion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater ❑x Management Control WM Waste Management and Q Materials Pollution Control egend:......... Legend:. ........ Q Primary Category ❑x Secondary Category Targeted Constituents Sediment Q Nutrients Q Trash Q Metals Q Bacteria Oil and Grease Q Organics Q Potential Alternatives None 1If User/Subscriber modifies this this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. M m,p,0�w�imm l^w'e mu �e0.Oi��t miW�� December 2019 CASQA BMP Handbook 1 of 3 Construction www.casqa.org Agreement No. 6574 Stockpile .; • On larger sites, a minimum of 5o ft separation from concentrated flows of stormwater, drainage courses, and inlets is recommended. • After 14 days of inactivity, a stockpile is non -active and requires further protection described below. All stockpiles are required to be protested as non -active stockpiles immediately if they are not scheduled to be used within 14 days. • Protect all stockpiles from stormwater run-on using temporary perimeter sediment barriers such as compost berms (SE-13), temporary silt dikes (SE-12), fiber rolls (SE-5), silt fences (SE-1), sandbags (SE-8), gravel bags (SE-6), or biofilter bags (SE-14). Refer to the individual fact sheet for each of these controls for installation information. • Implement wind erosion control practices as appropriate on all stockpiled material. For specific information, see WE-1, Wind Erosion Control. a Manage stockpiles of contaminated soil in accordance with W34-7, Contaminated Soil Management. ■ Place bagged materials on pallets and under cover. • Ensure that stockpile coverings are installed securely to protect from wind and rain. ■ Some plastic covers withstand weather and sunlight better than others. Select cover materials or methods based on anticipated duration of use. Protection of Non Active Stockpiles A stockpile is considered non -active if it either is not used for 14 days or if it is scheduled not to be used for 14 days or more. Stockpiles need to be protected immediately if they are not scheduled to be used within 14 days. Non -active stockpiles of the identified materials should be protected as follows: Soil stockpiles Soil stockpiles should be covered or protected with soil stabilization measures and a temporary perimeter sediment barrier at all times. Temporary vegetation should be considered for topsoil piles that will be stockpiled for extended periods. Stockpiles of Portland cement concrete rubble, asphalt concrete, asphalt concrete rubble, aggregate base, or aggregate sub base ■ Stockpiles should be covered and protected with a temporary perimeter sediment barrier at all times. Stockpiles of "cold mix" a Cold mix stockpiles should be placed on and covered with plastic sheeting or comparable material at all times and surrounded by a berm. Stockpiles offly ash, stucco, hydrated lime December 2019 CASQA BMP Handbook 2 of 3 Construction www.casga.org Agreement No. 6574 Stockpile Stockpiles of materials that may raise the pH of runoff (i.e., basic materials) should be covered with plastic and surrounded by a berm. Stockpiles/Storage of treated wood ■ Treated wood should be covered with plastic sheeting or comparable material at all times and surrounded by a berm. Protection ofActiue Stockpiles A stockpile is active when it is being used or is scheduled to be used within 14 days of the previous use. Active stockpiles of the identified materials should be protected as follows: • All stockpiles should be covered and protected with a temporary linear sediment barrier prior to the onset of precipitation. • Stockpiles of "cold mix" and treated wood, and basic materials should be placed on and covered with plastic sheeting or comparable material and surrounded by a berm prior to the onset of precipitation. r The downstream perimeter of an active stockpile should be protected with a linear sediment barrier or berm and runoff should be diverted around or away from the stockpile on the upstream perimeter. Costs For cost information associated with stockpile protection refer to the individual erosion or sediment control BMP fact sheet considered for implementation (For example, refer to SE-1 Silt Fence for installation of silt fence around the perimeter of a stockpile.) Inspection and Maintenance ■ Stockpiles must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. It may be necessary to inspect stockpiles covered with plastic sheeting more frequently during certain conditions (for example, high winds or extreme heat). * Repair and/or replace perimeter controls and covers as needed to keep them functioning properly. Sediment shall be removed when it reaches one-third of the barrier height. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casqa.org Agreement No. 6574 Spill Prevention � NO, Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control Non-Stormwater NS Management Control WM Waste Management and Q Materials Pollution Control ti Legend: QPrimaryObjective a Secondary Objective �, Diu Targeted Constituents Description and Purpose Sediment Prevent or reduce the discharge of pollutants to drainage Nutrients Q systems or watercourses from leaks and spills by reducing the Trash Q chance for spills, stopping the source of spills, containing and Metals Q cleaning up spills, properly disposing of spill materials, and training employees. Bacteria Oil and Grease Q This best management practice covers only spill prevention and Organics Q control. However, WM-1, Materials Delivery and Storage, and WM-2, Material Use, also contain useful information, potential Alternatives particularly on spill prevention. For information on wastes, see the waste management BMPs in this section. None� Suitable Applications This BMP is suitable for all construction projects. Spill control _ Procedures are implemented anytime chemicals or hazardous If User/Subscriber - modifies this fact substances are stored on the construction site, including the sheet in any way, the CASQA following materials: name/logo and footer below must be removed from each page and not Soil stabilizers/binders appear on the modified version. • Dust palliatives s Herbicides s Growth inhibitors • Fertilizers • Deicing/anti-icing chemicals il',�":WW'&"iWW.Nl W'!WW"N'�Wv.7&vWl�ri.%JIMl'.. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 Spill Prieventioln and Control WM-4 • Fuels • Lubricants r Other petroleum distillates Limitations ■ In some cases, it may be necessary to use a private spill cleanup company. ■ This BMP applies to spills caused by the contractor and subcontractors. • Procedures and practices presented in this BMP are general. Contractor should identify appropriate practices for the specific materials used or stored onsite Implementation The following steps will help reduce the stormwater impacts of leaks and spills: Education • Be aware that different materials pollute in different amounts. Make sure that each employee knows what a "significant spill" is for each material they use, and what is the appropriate response for "significant" and "insignificant" spills. • Educate employees and subcontractors on potential dangers to humans and the environment from spills and leaks. ■ Hold regular meetings to discuss and reinforce appropriate disposal procedures (incorporate into regular safety meetings). • Establish a continuing education program to indoctrinate new employees. ■ Have contractor's superintendent or representative oversee and enforce proper spill prevention and control measures. General Measures • To the extent that the work can be accomplished safely, spills of oil, petroleum products, substances listed under 40 CFR parts 110,117, and 302, and sanitary and septic wastes should be contained and cleaned up immediately. • Store hazardous materials and wastes in covered containers and protect from vandalism. • Place a stockpile of spill cleanup materials where it will be readily accessible. • Train employees in spill prevention and cleanup. • Designate responsible individuals to oversee and enforce control measures. • Spills should be covered and protected from stormwater runon during rainfall to the extent that it doesn't compromise clean up activities. • Do not bury or wash spills with water. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 Spill Prevention 4 • Store and dispose of used clean up materials, contaminated materials, and recovered spill material that is no longer suitable for the intended purpose in conformance with the provisions in applicable BMPs. • Do not allow water used for cleaning and decontamination to enter storm drains or watercourses. Collect and dispose of contaminated water in accordance with WM-io, Liquid Waste Management. • Contain water overflow or minor water spillage and do not allow it to discharge into drainage facilities or watercourses. • Place proper storage, cleanup, and spill reporting instructions for hazardous materials stored or used on the project site in an open, conspicuous, and accessible location. • Keep waste storage areas clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function. Cleanup • Clean up leaks and spills immediately. • Use a rag for small spills on paved surfaces, a damp mop for general cleanup, and absorbent material for larger spills. If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to either a certified laundry (rags) or disposed of as hazardous waste. ® Never hose down or bury dry material spills. Clean up as much of the material as possible and dispose of properly. See the waste management BMPs in this section for specific information. Minor Spills • Minor spills typically involve small quantities of oil, gasoline, paint, etc. which can be controlled by the first responder at the discovery of the spill. • Use absorbent materials on small spills rather than hosing down or burying the spill. • Absorbent materials should be promptly removed and disposed of properly. ■ Follow the practice below for a minor spill: - Contain the spread of the spill. - Recover spilled materials. - Clean the contaminated area and properly dispose of contaminated materials. Semi -Significant Spills ■ Semi -significant spills still can be controlled by the first responder along with the aid of other personnel such as laborers and the foreman, etc. This response may require the cessation of all other activities. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Spill Prevention and l 4 Spills should be cleaned up immediately: - Contain spread of the spill. - Notify the project foreman immediately. - If the spill occurs on paved or impermeable surfaces, clean up using "dry" methods (absorbent materials, cat litter and/or rags). Contain the spill by encircling with absorbent materials and do not let the spill spread widely. - If the spill occurs in dirt areas, immediately contain the spill by constructing an earthen dike. Dig up and properly dispose of contaminated soil. - If the spill occurs during rain, cover spill with tarps or other material to prevent contaminating runoff. Significant/Hazardous Spills For significant or hazardous spills that cannot be controlled by personnel in the immediate vicinity, the following steps should be taken: - Notify the local emergency response by dialing 911. In addition to 911, the contractor will notify the proper county officials. It is the contractor's responsibility to have all emergency phone numbers at the construction site. - Notify the Governor's Office of Emergency Services Warning Center, (916) 845-8911. - For spills of federal reportable quantities, in conformance with the requirements in 40 CFR parts 110,119, and 302, the contractor should notify the National Response Center at (800) 424-8802. - Notification should first be made by telephone and followed up with a written report. - The services of a spill's contractor or a Haz-Mat team should be obtained immediately. Construction personnel should not attempt to clean up until the appropriate and qualified staffs have arrived at the job site. - Other agencies which may need to be consulted include, but are not limited to, the Fire Department, the Public Works Department, the Coast Guard, the Highway Patrol, the City/County Police Department, Department of Toxic Substances, California Division of Oil and Gas, Cal/OSHA, etc. Reporting in Report significant spills to local agencies, such as the Fire Department; they can assist in cleanup. m Federal regulations require that any significant oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hours). Use the following measures related to specific activities: December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 Spill Prevention r .r Vehicle and Equipment Maintenance d If maintenance must occur onsite, use a designated area and a secondary containment, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills. • Regularly inspect onsite vehicles and equipment for leaks and repair immediately • Check incoming vehicles and equipment (including delivery trucks, and employee and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite. • Always use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids. N Place drip pans or absorbent materials under paving equipment when not in use. • Use absorbent materials on small spills rather than hosing down or burying the spill. Remove the absorbent materials promptly and dispose of properly. • Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans or other open containers lying around A Oil filters disposed of in trashcans or dumpsters can leak oil and pollute stormwater. Place the oil filter in a funnel over a waste oil -recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask the oil supplier or recycler about recycling oil filters. • Store cracked batteries in a non -leaking secondary container. Do this with all cracked batteries even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Vehicle and Equipment Fueling ■ If fueling must occur onsite, use designate areas, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills. * Discourage "topping off' of fuel tanks. Always use secondary containment, such as a drain pan, when fueling to catch spills/ leaks. Costs Prevention of leaks and spills is inexpensive. Treatment and/ or disposal of contaminated soil or water can be quite expensive. Inspection and Maintenance Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. December 2019 CASQA BMP Handbook 5 of 6 Construction www.casqa.org Agreement No. 6574 Spill "reventi '' ioln Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 6 of 6 Construction www.casqa.org Agreement No. 6574 Solid Management WM_5 Description and Purpose Solid waste management procedures and practices are designed to prevent or reduce the discharge of pollutants to stormwater from solid or construction waste by providing designated waste collection areas and containers, arranging for regular disposal, and training employees and subcontractors. Suitable Applications This BMP is suitable for construction sites where the following wastes are generated or stored: a Solid waste generated from trees and shrubs removed during land clearing, demolition of existing structures (rubble), and building construction a Packaging materials including wood, paper, and plastic a Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces, and masonry products a Domestic wastes including food containers such as beverage cans, coffee cups, paper bags, plastic wrappers, and cigarettes a Construction wastes including brick, mortar, timber, steel and metal scraps, pipe and electrical cuttings, non- hazardous equipment parts, styrofoam and other materials used to transport and package construction materials Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Q Materials Pollution Control Legend: Q Primary Objective ❑X Secondary Objective Targeted Constituents Sediment Q Nutrients Q Trash Q Metals Q Bacteria Oil and Grease Q Organics Q Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 Solid Waste Management WM-5 s Highway planting wastes, including vegetative material, plant containers, and packaging materials Limitations Temporary stockpiling of certain construction wastes may not necessitate stringent drainage related controls during the non -rainy season or in desert areas with low rainfall. Implementation The following steps will help keep a clean site and reduce stormwater pollution: ■ Select designated waste collection areas onsite. • Inform trash -hauling contractors that you will accept only watertight dumpsters for onsite use. Inspect dumpsters for leaks and repair any dumpster that is not watertight. • Locate containers in a covered area or in a secondary containment. ■ Provide an adequate number of containers with lids or covers that can be placed over the container to keep rain out or to prevent loss of wastes when it is windy. • Cover waste containers at the end of each work day and when it is raining. ■ Plan for additional containers and more frequent pickup during the demolition phase of construction. • Collect site trash daily, especially during rainy and windy conditions. • Remove this solid waste promptly since erosion and sediment control devices tend to collect litter. • Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. • Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash hauling contractor. ■ Arrange for regular waste collection before containers overflow. a Clean up immediately if a container does spill. ni Make sure that construction waste is collected, removed, and disposed of only at authorized disposal areas. Education • Have the contractor's superintendent or representative oversee and enforce proper solid waste management procedures and practices. • Instruct employees and subcontractors on identification of solid waste and hazardous waste. ■ Educate employees and subcontractors on solid waste storage and disposal procedures. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 Sol"Id Waste Management WM-5. • Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings). • Require that employees and subcontractors follow solid waste handling and storage procedures. o Prohibit littering by employees, subcontractors, and visitors. • Minimize production of solid waste materials wherever possible. Collection, Storage, and Disposal • Littering on the project site should be prohibited. • To prevent clogging of the storm drainage system, litter and debris removal from drainage grates, trash racks, and ditch lines should be a priority. • Trash receptacles should be provided in the contractor's yard, field trailer areas, and at locations where workers congregate for lunch and break periods. • Litter from work areas within the construction limits of the project site should be collected and placed in watertight dumpsters at least weekly, regardless of whether the litter was generated by the contractor, the public, or others. Collected litter and debris should not be placed in or next to drain inlets, stormwater drainage systems, or watercourses. • Dumpsters of sufficient size and number should be provided to contain the solid waste generated by the project. • Full dumpsters should be removed from the project site and the contents should be disposed of by the trash hauling contractor. • Construction debris and waste should be removed from the site biweekly or more frequently as needed. • Construction material visible to the public should be stored or stacked in an orderly manner. • Stormwater runon should be prevented from contacting stored solid waste through the use of berms, dikes, or other temporary diversion structures or through the use of measures to elevate waste from site surfaces. • Solid waste storage areas should be located at least 50 ft from drainage facilities and watercourses and should not be located in areas prone to flooding or ponding. • Except during fair weather, construction and highway planting waste not stored in watertight dumpsters should be securely covered from wind and rain by covering the waste with tarps or plastic. ■ Segregate potentially hazardous waste from non -hazardous construction site waste. • Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 Sioli'd Waste Management For disposal of hazardous waste, see WM-6, Hazardous Waste Management. Have hazardous waste hauled to an appropriate disposal and/or recycling facility. Salvage or recycle useful vegetation debris, packaging and surplus building materials when practical. For example, trees and shrubs from land clearing can be used as a brush barrier, or converted into wood chips, then used as mulch on graded areas. Wood pallets, cardboard boxes, and construction scraps can also be recycled. Costs All of the above are low cost measures. Inspection and Maintenance • Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur ■ Inspect construction waste area regularly. • Arrange for regular waste collection. References Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Hazardous+;; Description and Purpose Prevent or reduce the discharge of pollutants to stormwater from hazardous waste through proper material use, waste disposal, and training of employees and subcontractors. Suitable Applications This best management practice (BMP) applies to all construction projects. Hazardous waste management practices are implemented on construction projects that generate waste from the use of: - Petroleum Products - Concrete Curing Compounds - Palliatives - Septic Wastes - Stains - Wood Preservatives - Asphalt Products - Pesticides - Acids - Paints - Solvents - Roofing Tar - Any materials deemed a hazardous waste in California, Title 22 Division 4.5, or listed in 40 CFR Parts 11o, 117, 261, or 302 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Q Materials Pollution Control ..........._ ............. Legend: Q Primary Objective ❑x Secondary Objective Targeted Constituents Sediment �.w.���....,..�.� Nutrients Q Trash Q Metals Q Bacteria Q Oil and Grease Q Organics Q Potential Alternatives �.None � .....w If User/Subscriber modifies this fact sheet in anyway, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 6 Construction www.casqa.org Agreement No. 6574 H�aizardous, In addition, sites with existing structures may contain wastes, which must be disposed of in accordance with federal, state, and local regulations. These wastes include: • Sandblasting grit mixed with lead-, cadmium-, or chromium -based paints • Asbestos • PCBs (particularly in older transformers) Limitations • Hazardous waste that cannot be reused or recycled must be disposed of by a licensed hazardous waste hauler. • Nothing in this BMP relieves the contractor from responsibility for compliance with federal, state, and local laws regarding storage, handling, transportation, and disposal of hazardous wastes. • This BMP does not cover aerially deposited lead (ADL) soils. For ADL soils refer to WM-7, Contaminated Soil Management. Implementation The following steps will help reduce stormwater pollution from hazardous wastes: Material Use ® Wastes should be stored in sealed containers constructed of a suitable material and should be labeled as required by Title 22 CCR, Division 4.5 and 49 CFR Parts 172, 173, 178, and 179. r! All hazardous waste should be stored, transported, and disposed as required in Title 22 CCR, Division 4.5 and 49 CFR 261-263. ■ Waste containers should be stored in temporary containment facilities that should comply with the following requirements: Temporary containment facility should provide for a spill containment volume equal to 1.5 times the volume of all containers able to contain precipitation from a 25-year storm event, plus the greater of 1o% of the aggregate volume of all containers or t00% of the capacity of the largest tank within its boundary, whichever is greater. Temporary containment facility should be impervious to the materials stored there for a minimum contact time of 72 hours. - Temporary containment facilities should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be placed into drums after each rainfall. These liquids should be handled as a hazardous waste unless testing determines them to be non -hazardous. Non -hazardous liquids should be sent to an approved disposal site. - Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access. December 2019 CASQA BMP Handbook 2 of 6 Construction www.casqa.org Agreement No. 6574 - Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility. - Throughout the rainy season, temporary containment facilities should be covered during non -working days, and prior to rain events. Covered facilities may include use of plastic tarps for small facilities or constructed roofs with overhangs. a Drums should not be overfilled, and wastes should not be mixed. Unless watertight, containers of dry waste should be stored on pallets. Do not over -apply herbicides and pesticides. Prepare only the amount needed. Follow the recommended usage instructions. Over application is expensive and environmentally harmful. Apply surface dressings in several smaller applications, as opposed to one large application. Allow time for infiltration and avoid excess material being carried offsite by runoff. Do not apply these chemicals just before it rains. People applying pesticides must be certified in accordance with federal and state regulations. • Paint brushes and equipment for water and oil -based paints should be cleaned within a contained area and should not be allowed to contaminate site soils, watercourses, or drainage systems. Waste paints, thinners, solvents, residues, and sludges that cannot be recycled or reused should be disposed of as hazardous waste. When thoroughly dry, latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths should be disposed of as solid waste. • Do not clean out brushes or rinse paint containers into the dirt, street, gutter, storm drain, or stream. "Paint out" brushes as much as possible. Rinse water -based paints to the sanitary sewer. Filter and reuse thinners and solvents. Dispose of excess oil -based paints and sludge as hazardous waste. • The following actions should be taken with respect to temporary contaminant: - Ensure that adequate hazardous waste storage volume is available. - Ensure that hazardous waste collection containers are conveniently located. - Designate hazardous waste storage areas onsite away from storm drains or watercourses and away from moving vehicles and equipment to prevent accidental spills. - Minimize production or generation of hazardous materials and hazardous waste on the job site. - Use containment berms in fueling and maintenance areas and where the potential for spills is high. - Segregate potentially hazardous waste from non -hazardous construction site debris. - Keep liquid or semi -liquid hazardous waste in appropriate containers (closed drums or similar) and under cover. December 2019 CASQA BMP Handbook 3 of 6 Construction www.casqa.org Agreement No. 6574 Management'lazardous Waste w - Clearly label all hazardous waste containers with the waste being stored and the date of accumulation. Place hazardous waste containers in secondary containment. - Do not allow potentially hazardous waste materials to accumulate on the ground. - Do not mix wastes. Use all of the product before disposing of the container. Do not remove the original product label; it contains important safety and disposal information. Waste Recycling Disposal ■ Select designated hazardous waste collection areas onsite. • Hazardous materials and wastes should be stored in covered containers and protected from vandalism. ■ Place hazardous waste containers in secondary containment. • Do not mix wastes, this can cause chemical reactions, making recycling impossible and complicating disposal. • Recycle any useful materials such as used oil or water -based paint. • Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. • Arrange for regular waste collection before containers overflow. • Make sure that hazardous waste (e.g., excess oil -based paint and sludge) is collected, removed, and disposed of only at authorized disposal areas. Disposal Procedures • Waste should be disposed of by a licensed hazardous waste transporter at an authorized and licensed disposal facility or recycling facility utilizing properly completed Uniform Hazardous Waste Manifest forms. ■ A Department of Health Services certified laboratory should sample waste to determine the appropriate disposal facility. ® Properly dispose of rainwater in secondary containment that may have mixed with hazardous waste. • Attention is directed to "Hazardous Material", "Contaminated Material", and "Aerially Deposited Lead" of the contract documents regarding the handling and disposal of hazardous materials. December 2019 CASQA BMP Handbook 4 of 6 Construction www.casqa.org Agreement No. 6574 Education Educate employees and subcontractors on hazardous waste storage and disposal procedures. Educate employees and subcontractors on potential dangers to humans and the environment from hazardous wastes. ■ Instruct employees and subcontractors on safety procedures for common construction site hazardous wastes. a Instruct employees and subcontractors in identification of hazardous and solid waste. • Hold regular meetings to discuss and reinforce hazardous waste management procedures (incorporate into regular safety meetings). ■ The contractor's superintendent or representative should oversee and enforce proper hazardous waste management procedures and practices. • Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas. • Warning signs should be placed in areas recently treated with chemicals. • Place a stockpile of spill cleanup materials where it will be readily accessible. • If a container does spill, clean up immediately. Costs All of the above are low cost measures. Inspection and Maintenance • Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur • Hazardous waste should be regularly collected. • A foreman or construction supervisor should monitor onsite hazardous waste storage and disposal procedures. • Waste storage areas should be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. n Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function. December 2019 CASQA BMP Handbook 5 of 6 Construction www.casqa.org Agreement No. 6574 • Hazardous spills should be cleaned up and reported in conformance with the applicable Material Safety Data Sheet (MSDS) and the instructions posted at the project site. • The National Response Center, at (800) 424-8802, should be notified of spills of federal reportable quantities in conformance with the requirements in 40 CFR parts 110, 117, and 302. Also notify the Governors Office of Emergency Services Warning Center at (916) 845- 8911. • A copy of the hazardous waste manifests should be provided. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995• Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973• Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 6 of 6 Construction www.casqa.org Agreement No. 6574 �w114�.. Description and Purpose Prevent or reduce the discharge of pollutants to stormwater from contaminated soil and highly acidic or alkaline soils by conducting pre -construction surveys, inspecting excavations regularly, and remediating contaminated soil promptly. Suitable Applications Contaminated soil management is implemented on construction projects in highly urbanized or industrial areas where soil contamination may have occurred due to spills, illicit discharges, aerial deposition, past use and leaks from underground storage tanks. Limitations Contaminated soils that cannot be treated onsite must be disposed of offsite by a licensed hazardous waste hauler. The presence of contaminated soil may indicate contaminated water as well. See NS-2, Dewatering Operations, for more information. The procedures and practices presented in this BMP are general. The contractor should identify appropriate practices and procedures for the specific contaminants known to exist or discovered onsite. Implementation Most owners and developers conduct pre -construction environmental assessments as a matter of routine. Contaminated soils are often identified during project planning and development with known locations identified in the plans, specifications and in the SWPPP. The contractor should review applicable reports and investigate appropriate call -outs in the Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and 0 Materials Pollution Control Legend: 0 Primary Objective 0 Secondary Objective Targeted Constituents _ ...... Sediment......... ...._ Nutrients 0 Trash 0 Metals 0 Bacteria 0 Oil and Grease 0 Organics 0 Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 5 Construction www.casqa.org Agreement No. 6574 ContaminatedillManagement plans, specifications, and SWPPP. Recent court rulings holding contractors liable for cleanup costs when they unknowingly move contaminated soil highlight the need for contractors to confirm a site assessment is completed before earth moving begins. The following steps will help reduce stormwater pollution from contaminated soil: a Conduct thorough, pre -construction inspections of the site and review documents related to the site. If inspection or reviews indicated presence of contaminated soils, develop a plan before starting work. Look for contaminated soil as evidenced by discoloration, odors, differences in soil properties, abandoned underground tanks or pipes, or buried debris. w Prevent leaks and spills. Contaminated soil can be expensive to treat and dispose of properly. However, addressing the problem before construction is much less expensive than after the structures are in place. ni The contractor may further identify contaminated soils by investigating: - Past site uses and activities - Detected or undetected spills and leaks .. Acid or alkaline solutions from exposed soil or rock formations high in acid or alkaline forming elements Contaminated soil as evidenced by discoloration, odors, differences in soil properties, abandoned underground tanks or pipes, or buried debris. - Suspected soils should be tested at a certified laboratory. Education • Have employees and subcontractors complete a safety training program which meets 29 CFR 1910.12o and 8 CCR 5192 covering the potential hazards as identified, prior to performing any excavation work at the locations containing material classified as hazardous. m Educate employees and subcontractors in identification of contaminated soil and on contaminated soil handling and disposal procedures. • Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings). Handling Procedures for Material with Aerially Deposited Lead (ADL) ■ Materials from areas designated as containing (ADL) may, if allowed by the contract special provisions, be excavated, transported, and used in the construction of embankments and/or backfill. is Excavation, transportation, and placement operations should result in no visible dust. n Caution should be exercised to prevent spillage of lead containing material during transport. December 2019 CASQA BMP Handbook 2 of 5 Construction www.casqa.org Agreement No. 6574 FT r m Quality should be monitored during excavation of soils contaminated with lead. Handling Procedures for Contaminated Soils • Minimize onsite storage. Contaminated soil should be disposed of properly in accordance with all applicable regulations. All hazardous waste storage will comply with the requirements in Title 22, CCR, Sections 66265.250 to 66265.26o. • Test suspected soils at an approved certified laboratory. 81 Work with the local regulatory agencies to develop options for treatment or disposal if the soil is contaminated. r Avoid temporary stockpiling of contaminated soils or hazardous material. • Take the following precautions if temporary stockpiling is necessary: - Cover the stockpile with plastic sheeting or tarps. - Install a berm around the stockpile to prevent runoff from leaving the area. - Do not stockpile in or near storm drains or watercourses. • Remove contaminated material and hazardous material on exteriors of transport vehicles and place either into the current transport vehicle or into the excavation prior to the vehicle leaving the exclusion zone. r Monitor the air quality continuously during excavation operations at all locations containing hazardous material. • Procure all permits and licenses, pay all charges and fees, and give all notices necessary and incident to the due and lawful prosecution of the work, including registration for transporting vehicles carrying the contaminated material and the hazardous material. • Collect water from decontamination procedures and treat or dispose of it at an appropriate disposal site. • Collect non -reusable protective equipment, once used by any personnel, and dispose of at an appropriate disposal site. • Install temporary security fence to surround and secure the exclusion zone. Remove fencing when no longer needed. • Excavate, transport, and dispose of contaminated material and hazardous material in accordance with the rules and regulations of the following agencies (the specifications of these agencies supersede the procedures outlined in this BMP): - United States Department of Transportation (USDOT) - United States Environmental Protection Agency (USEPA) - California Environmental Protection Agency (CAL -EPA) December 2019 CASQA BMP Handbook 3 of 5 Construction www.casga.org Agreement No. 6574 Contaminated California Division of Occupation Safety and Health Administration (CAL -OSHA) Local regulatory agencies Procedures for Underground Storage Tank Removals • Prior to commencing tank removal operations, obtain the required underground storage tank removal permits and approval from the federal, state, and local agencies that have jurisdiction over such work. s To determine if it contains hazardous substances, arrange to have tested, any liquid or sludge found in the underground tank prior to its removal. • Following the tank removal, take soil samples beneath the excavated tank and perform analysis as required by the local agency representative(s). • The underground storage tank, any liquid or sludge found within the tank, and all contaminated substances and hazardous substances removed during the tank removal and transported to disposal facilities permitted to accept such waste. Water Control s All necessary precautions and preventive measures should be taken to prevent the flow of water, including ground water, from mixing with hazardous substances or underground storage tank excavations. Such preventative measures may consist of, but are not limited to, berms, cofferdams, grout curtains, freeze walls, and seal course concrete or any combination thereof. ■ If water does enter an excavation and becomes contaminated, such water, when necessary to proceed with the work, should be discharged to clean, closed top, watertight transportable holding tanks, treated, and disposed of in accordance with federal, state, and local laws. Costs Prevention of leaks and spills is inexpensive. Treatment or disposal of contaminated soil can be quite expensive. Inspection and Maintenance • Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Arrange for contractor's Water Pollution Control Manager, foreman, and/or construction supervisor to monitor onsite contaminated soil storage and disposal procedures. ol Monitor air quality continuously during excavation operations at all locations containing hazardous material. Coordinate contaminated soils and hazardous substances/waste management with the appropriate federal, state, and local agencies. December 2019 CASQA BMP Handbook 4 of 5 Construction www.casqa.org Agreement No. 6574 ■ Implement W34-4, Spill Prevention and Control, to prevent leaks and spills as much as possible. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973• Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. December 2019 CASQA BMP Handbook 5 of 5 Construction www.casga.org Agreement No. 6574 Concrete Waste Description and Purpose Prevent the discharge of pollutants to stormwater from concrete waste by conducting washout onsite or offsite in a designated area, and by employee and subcontractor training. The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Many types of construction materials, including mortar, concrete, stucco, cement and block and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows and raising pH to levels outside the accepted range. Suitable Applications Concrete waste management procedures and practices are implemented on construction projects where: s Concrete is used as a construction material or where concrete dust and debris result from demolition activities. n Slurries containing Portland cement concrete (PCC) are generated, such as from saw cutting, coring, grinding, grooving, and hydro -concrete demolition. w Concrete trucks and other concrete -coated equipment are washed onsite. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Q Materials Pollution Control Legend: Q Primary Category ❑x Secondary Category Targeted Constituents Sediment������. �..,,,,,.....a Nutrients Trash Metals Q Bacteria Oil and Grease Organics Potential Alternatives None If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 7 Construction www.casqa.org Agreement No. 6574 ManagementConcrete Waste 8 • Mortar -mixing stations exist. • Stucco mixing and spraying. • See also NS-8, Vehicle and Equipment Cleaning. Limitations mi Offsite washout of concrete wastes may not always be possible. ■ Multiple washouts may be needed to assure adequate capacity and to allow for evaporation. Implementation The following steps will help reduce stormwater pollution from concrete wastes: w Incorporate requirements for concrete waste management into material supplier and subcontractor agreements. • Store dry and wet materials under cover, away from drainage areas. Refer to WM-1, Material Delivery and Storage for more information. • Avoid mixing excess amounts of concrete. ■ Perform washout of concrete trucks in designated areas only, where washout will not reach stormwater. ■ Do not wash out concrete trucks into storm drains, open ditches, streets, streams or onto the ground. Trucks should always be washed out into designated facilities. • Do not allow excess concrete to be dumped onsite, except in designated areas. • For onsite washout: - On larger sites, it is recommended to locate washout areas at least 50 feet from storm drains, open ditches, or water bodies. Do not allow runoff from this area by constructing a temporary pit or bermed area large enough for liquid and solid waste. - Washout wastes into the temporary washout where the concrete can set, be broken up, and then disposed properly. - Washouts shall be implemented in a manner that prevents leaching to underlying soils. Washout containers must be water tight and washouts on or in the ground must be lined with a suitable impervious liner, typically a plastic type material. • Do not wash sweepings from exposed aggregate concrete into the street or storm drain. Collect and return sweepings to aggregate base stockpile or dispose in the trash. ■ See typical concrete washout installation details at the end of this fact sheet. Education s Educate employees, subcontractors, and suppliers on the concrete waste management techniques described herein. December 2019 CASQA BMP Handbook 2 of 7 Construction www.casqa.org Agreement No. 6574 Concrete Waste Managernient • Arrange for contractor's superintendent or representative to oversee and enforce concrete waste management procedures. • Discuss the concrete management techniques described in this BMP (such as handling of concrete waste and washout) with the ready -mix concrete supplier before any deliveries are made. Concrete Demolition Wastes m Stockpile concrete demolition waste in accordance with BMP WM-3, Stockpile Management. • Dispose of or recycle hardened concrete waste in accordance with applicable federal, state or local regulations. Concrete Slurry Wastes • PCC and AC waste should not be allowed to enter storm drains or watercourses. • PCC and AC waste should be collected and disposed of or placed in a temporary concrete washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below). • A foreman or construction supervisor should monitor onsite concrete working tasks, such as saw cutting, coring, grinding and grooving to ensure proper methods are implemented. • Saw -cut concrete slurry should not be allowed to enter storm drains or watercourses. Residue from grinding operations should be picked up by means of a vacuum attachment to the grinding machine or by sweeping. Saw cutting residue should not be allowed to flow across the pavement and should not be left on the surface of the pavement. See also NS-3, Paving and Grinding Operations; and WM-1o, Liquid Waste Management. e Concrete slurry residue should be disposed in a temporary washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below) and allowed to dry. Dispose of dry slurry residue in accordance with WM-5, Solid Waste Management. Onsite Temporary Concrete Washout Facility, Transit Truck Washout Procedures • Temporary concrete washout facilities should be located a minimum of 50 ft from storm drain inlets, open drainage facilities, and watercourses. Each facility should be located away from construction traffic or access areas to prevent disturbance or tracking. • A sign should be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities. • Temporary concrete washout facilities should be constructed above grade or below grade at the option of the contractor. Temporary concrete washout facilities should be constructed and maintained in sufficient quantity and size to contain all liquid and concrete waste generated by washout operations. December 2019 CASQA BMP Handbook 3 of 7 Construction www.casqa.org Agreement No. 6574 Concrete Waste Management =Trfiz�1_8 a Temporary washout facilities should have a temporary pit or bermed areas of sufficient volume to completely contain all liquid and waste concrete materials generated during washout procedures. • Temporary washout facilities should be lined to prevent discharge to the underlying ground or surrounding area. • Washout of concrete trucks should be performed in designated areas only. • Only concrete from mixer truck chutes should be washed into concrete wash out. n Concrete washout from concrete pumper bins can be washed into concrete pumper trucks and discharged into designated washout area or properly disposed of or recycled offsite. m Once concrete wastes are washed into the designated area and allowed to harden, the concrete should be broken up, removed, and disposed of per WM-5, Solid Waste Management. Dispose of or recycle hardened concrete on a regular basis. Temporary Concrete Washout Facility (Type Above Grade) - Temporary concrete washout facility (type above grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of io ft; however, smaller sites or jobs may only need a smaller washout facility. With any washout, always maintain a sufficient quantity and volume to contain all liquid and concrete waste generated by washout operations. - Materials used to construct the washout area should conform to the provisions detailed in their respective BMPs (e.g., SE-8 Sandbag Barrier). - Plastic lining material should be a minimum of io mil in polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material. - Alternatively, portable removable containers can be used as above grade concrete washouts. Also called a "roll -off'; this concrete washout facility should be properly sealed to prevent leakage and should be removed from the site and replaced when the container reaches 75% capacity. Temporary Concrete Washout Facility (Type Below Grade) - Temporary concrete washout facilities (type below grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of io ft. The quantity and volume should be sufficient to contain all liquid and concrete waste generated by washout operations. - Lath and flagging should be commercial type. - Plastic lining material should be a minimum of 10 mil polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material. December 2019 CASQA BMP Handbook 4 of 7 Construction www.casqa.org Agreement No. 6574 Coincrete Waste Management WM-8 The base of a washout facility should be free of rock or debris that may damage a plastic liner. Removal of Temporary Concrete Washout Facilities • When temporary concrete washout facilities are no longer required for the work, the hardened concrete should be removed and properly disposed or recycled in accordance with federal, state or local regulations. Materials used to construct temporary concrete washout facilities should be removed from the site of the work and properly disposed or recycled in accordance with federal, state or local regulations. • Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities should be backfilled and repaired. Costs All of the above are low cost measures. Roll -off concrete washout facilities can be more costly than other measures due to removal and replacement; however, provide a cleaner alternative to traditional washouts. The type of washout facility, size, and availability of materials will determine the cost of the washout. Inspection and Maintenance r, BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. Temporary concrete washout facilities should be maintained to provide adequate holding capacity with a minimum freeboard of 4 in. for above grade facilities and 12 in. for below grade facilities. Maintaining temporary concrete washout facilities should include removing and disposing of hardened concrete and returning the facilities to a functional condition. Hardened concrete materials should be removed and properly disposed or recycled in accordance with federal, state or local regulations. Washout facilities must be cleaned, or new facilities must be constructed and ready for use once the washout is 75% full. Inspect washout facilities for damage (e.g. torn liner, evidence of leaks, signage, etc.). Repair all identified damage. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995- Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000, Updated March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992• December 2019 CASQA BMP Handbook 5 of 7 Construction www.casqa.org Agreement No. 6574 Concrete Wa�ste Management WMI-8 "� FLAC�|� ON Al S|DE':, 1O IV L I I I , I I".I � NOT TO SCALE TYPE ~BELOYY CRADE~ W�N �TAKE TYP) 2 X 12 ROU(M WOOU FRAWE ���Kj NOT TO SCALE TYPE A8OVE GRADE^ NDBAO 5ANDBA� NOT 10 SCALE ,o v I 'Al STENED AROUND ENT|RE Pl TEN YNTH TVO STAK"S C, (l� �-1 NOT 10 ""CALF oecemberan1* cAs0AsMpHandbook 6or7 Construction w*w.cuspuung Agreement No. 6574 Concrete Waste Management RAYY BALE ~"` \� /r/ ` TYPE ~ABOVE CIR ^ VNTH �TRAW BALE-� STAPLES (2 PER BALE\ NATIVE N11ATER|AL �OP�ONAL� P1 AS11C I NIN� WOOD OR--� METAL STAKE� (2 PER BALE� �—�� NOT TO 5CALE 4O^ X 24~ rmn1cu VVn/Ic BLACK LETTER3 LA WOOD POST X 8' CONCRETE �ASHOUl S|CN DET�|L (OR EOU|VALENT) BINDING Y0RE STRAYY BALE Construction Agreement No. 6574 e Management ar / 'e ic Waste -�, Description and Purpose Proper sanitary and septic waste management prevent the discharge of pollutants to stormwater from sanitary and septic waste by providing convenient, well -maintained facilities, and arranging for regular service and disposal. Suitable Applications Sanitary septic waste management practices are suitable for use at all construction sites that use temporary or portable sanitary and septic waste systems. Limitations None identified. Implementation Sanitary or septic wastes should be treated or disposed of in accordance with state and local requirements. In many cases, one contract with a local facility supplier will be all that it takes to make sure sanitary wastes are properly disposed. Storage and Disposal Procedures ■ Temporary sanitary facilities should be located away from drainage facilities, watercourses, and from traffic circulation. If site conditions allow, place portable facilities a minimum of 50 feet from drainage conveyances and traffic areas. When subjected to high winds or risk of high winds, temporary sanitary facilities should be secured to prevent overturning. Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend 0 Primary Category ❑x Secondary Category Targeted Constituents Sediment Nutrients Q Trash Q Metals Bacteria Q Oil and Grease Organics Q Potential Alternatives . If User/Subscriber modifies this fact sheet in any way, the CASQA name/logo and footer below must be removed from each page and not appear on the modified version. December 2019 CASQA BMP Handbook 1 of 3 Construction www.casga.org Agreement No. 6574 Temporary sanitary facilities must be equipped with containment to prevent discharge of pollutants to the stormwater drainage system of the receiving water. ■ Consider safety as well as environmental implications before placing temporary sanitary facilities. • Wastewater should not be discharged or buried within the project site. ■ Sanitary and septic systems that discharge directly into sanitary sewer systems, where permissible, should comply with the local health agency, city, county, and sewer district requirements. • Only reputable, licensed sanitary and septic waste haulers should be used. • Sanitary facilities should be located in a convenient location. al Temporary septic systems should treat wastes to appropriate levels before discharging. • If using an onsite disposal system (OSDS), such as a septic system, local health agency requirements must be followed. ■ Temporary sanitary facilities that discharge to the sanitary sewer system should be properly connected to avoid illicit discharges. ■ Sanitary and septic facilities should be maintained in good working order by a licensed service. x Regular waste collection by a licensed hauler should be arranged before facilities overflow. If a spill does occur from a temporary sanitary facility, follow federal, state and local regulations for containment and clean-up. Education • Educate employees, subcontractors, and suppliers on sanitary and septic waste storage and disposal procedures. • Educate employees, subcontractors, and suppliers of potential dangers to humans and the environment from sanitary and septic wastes. ■i Instruct employees, subcontractors, and suppliers in identification of sanitary and septic waste. Hold regular meetings to discuss and reinforce the use of sanitary facilities (incorporate into regular safety meetings). Establish a continuing education program to indoctrinate new employees. Costs All of the above are low cost measures. December 2019 CASQA BMP Handbook 2 of 3 Construction www.casqa.org Agreement No. 6574 Inspection and Maintenance m BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. • Arrange for regular waste collection. • If high winds are expected, portable sanitary facilities must be secured with spikes or weighed down to prevent over turning. • If spills or leaks from sanitary or septic facilities occur that are not contained and discharge from the site, non -visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92O05; USEPA, April 1992. December 2019 CASQA BMP Handbook 3 of 3 Construction www.casga.org Agreement No. 6574 Uquid Waste Management Categories EC Erosion Control � SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Q Materials Pollution Control ................ Legend: . Q Primary Objective ❑x Secondary Objective Targeted Constituents Description and Purpose Sediment .......... Liquid waste management includes procedures and practices to Nutrients Q prevent discharge of pollutants to the storm drain system or to Trash Q watercourses as a result of the creation, collection, and disposal of non -hazardous liquid wastes. Metals Q Bacteria Suitable Applications Oil and Grease Liquid waste management is applicable to construction projects Organics that generate any of the following non -hazardous by-products, residuals, or wastes:,.mmmmmmmm..wda.......,.,,,,,,a,w.. Potential Alternatives • Drilling slurries and drilling fluids None • Grease -free and oil -free wastewater and rinse water • Dredgings e Other non-stormwater liquid discharges not permitted by If User/Subscriber modifies this fact separate permits sheet in any way, the CASQA name/logo and footer below must be Limitations removed from each page and not ® Disposal of some liquid wastes may be subject to specific appear on the modified version. laws and regulations or to requirements of other permits secured for the construction project (e.g., NPDES permits, Army Corps permits, Coastal Commission permits, etc.). • Liquid waste management does not apply to dewatering`� operations (NS-2 Dewatering Operations), solid waste management (WM-5, Solid Waste Management), hazardous wastes (WM-6, Hazardous Waste Management), or December 2019 CASQA BMP Handbook 1 of 4 Construction www.casqa.org Agreement No. 6574 concrete slurry residue (WM-8, Concrete Waste Management). Typical permitted non-stormwater discharges can include: water line flushing; landscape irrigation; diverted stream flows; rising ground waters; uncontaminated pumped ground water; discharges from potable water sources; foundation drains; irrigation water; springs; water from crawl space pumps; footing drains; lawn watering; flows from riparian habitats and wetlands; and discharges or flows from emergency fire fighting activities. Implementation General Practices A Instruct employees and subcontractors how to safely differentiate between non -hazardous liquid waste and potential or known hazardous liquid waste. • Instruct employees, subcontractors, and suppliers that it is unacceptable for any liquid waste to enter any storm drainage device, waterway, or receiving water. • Educate employees and subcontractors on liquid waste generating activities and liquid waste storage and disposal procedures. • Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings). • Verify which non-stormwater discharges are permitted by the statewide NPDES permit; different regions might have different requirements not outlined in this permit. • Apply NS-8, Vehicle and Equipment Cleaning for managing wash water and rinse water from vehicle and equipment cleaning operations. Containing Liquid Wastes • Drilling residue and drilling fluids should not be allowed to enter storm drains and watercourses and should be disposed of. ■ If an appropriate location is available, drilling residue and drilling fluids that are exempt under Title 23, CCR § 2511(g) may be dried by infiltration and evaporation in a containment facility constructed in conformance with the provisions concerning the Temporary Concrete Washout Facilities detailed in WM-8, Concrete Waste Management. • Liquid wastes generated as part of an operational procedure, such as water -laden dredged material and drilling mud, should be contained and not allowed to flow into drainage channels or receiving waters prior to treatment. M Liquid wastes should be contained in a controlled area such as a holding pit, sediment basin, roll -off bin, or portable tank. •, Containment devices must be structurally sound and leak free. • Containment devices must be of sufficient quantity or volume to completely contain the liquid wastes generated. December 2019 CASQA BMP Handbook 2 of 4 Construction www.casqa.org Agreement No. 6574 Liquidn n Precautions should be taken to avoid spills or accidental releases of contained liquid wastes. Apply the education measures and spill response procedures outlined in WM-4, Spill Prevention and Control. a Containment areas or devices should not be located where accidental release of the contained liquid can threaten health or safety or discharge to water bodies, channels, or storm drains. Capturing Liquid Wastes • Capture all liquid wastes that have the potential to affect the storm drainage system (such as wash water and rinse water from cleaning walls or pavement), before they run off a surface. o Do not allow liquid wastes to flow or discharge uncontrolled. Use temporary dikes or berms to intercept flows and direct them to a containment area or device for capture. • Use a sediment trap (SE-3, Sediment Trap) for capturing and treating sediment laden liquid waste or capture in a containment device and allow sediment to settle. Disposing of Liquid Wastes • A typical method to handle liquid waste is to dewater the contained liquid waste, using procedures such as described in NS-2, Dewatering Operations, and SE-2, Sediment Basin, and dispose of resulting solids per WM-5, Solid Waste Management. • Methods of disposal for some liquid wastes may be prescribed in Water Quality Reports, NPDES permits, Environmental Impact Reports, 401 or 404 permits, and local agency discharge permits, etc. Review the SWPPP to see if disposal methods are identified. • Liquid wastes, such as from dredged material, may require testing and certification whether it is hazardous or not before a disposal method can be determined. • For disposal of hazardous waste, see WM-6, Hazardous Waste Management. w If necessary, further treat liquid wastes prior to disposal. Treatment may include, though is not limited to, sedimentation, filtration, and chemical neutralization. Costs Prevention costs for liquid waste management are minimal. Costs increase if cleanup or fines are involved. Inspection and Maintenance a Inspect and verify that activity —based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and of two -week intervals in the non -rainy season to verify continued BMP implementation. mi Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. December 2019 CASQA BMP Handbook 3 of 4 Construction www.casqa.org Agreement No. 6574 ManagementLiquid Waste Remove deposited solids in containment areas and capturing devices as needed and at the completion of the task. Dispose of any solids as described in WM-5, Solid Waste Management. a Inspect containment areas and capturing devices and repair as needed. References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. December 2019 CASQA BMP Handbook 4 of 4 Construction www.casqa.org Agreement No. 6574 Appendix Permit El Segundo Boulevard Improvements Project 94 CASQA SWPPP Template Preparation Date August 26, 2022 January 2015 AState Water Resources Control Board reement NoF Division o Water ua i 9 1001 I Street •Sacramento, California 95814 • (916) 341-5455 4 Mailing Address: P.O. Box 100 • Sacramento, California • 95812-0100 L W„ Linda S. Adams Fax (916) 341-5463 • http://www.waterboards.ca.gov Secretary for Environmental Protection Arnold Schwarzenegger Governor CONSTRUCTION GENERAL PERMIT FACT SHEET TABLE OF CONTENTS 1. BACKGROUND.....................................................................................................1 A. History..............................................................................................................................................................1 B. Legal Challenges and Court Decisions...........................................................................................................1 C. Blue Ribbon Panel of Experts and Feasibility of Numeric Effluent Limitations.......................................4 D. Summary of Panel Findings on Construction Activities..............................................................................4 E. How the Panel's Findings are Used in this General Permit............................................................ .... „........ 5 F. Summary of Significant Changes in This General Permit...........................................................................5 II. RATIONALE.......................................................................................................... 7 A. General Permit Approach...............................................................................................................................7 B. Construction Activities Covered.....................................................................................................................7 C. Construction Activities Not Covered....................................................................................................»........9 D. Obtaining and Terminating Permit Coverage.........................................................................................„..12 E. Discharge Prohibitions..................................................................................................................................iz F. Effluent Standards for All Types of Discharges..........................................................................................13 G. Receiving Water Limitations........................................................................................................................20 H. Training Qualifications and Requirements.................................................................................................20 I. Sampling, Monitoring, Reporting and Record Keeping.............................................................................21 J. Risk Determination................................................................................................................„...,....................27 K. ATS Requirements.........................................................................................................................................35 L. Post -Construction Requirements.................................................................................................................37 M. Storm Water Pollution Prevention Plans....................................................................................................46 N. Regional Water Board Authorities...............................................................................................................48 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 LIST OF TABLES Table 1 - Regional Water Board Basin Plans, Water Quality Objectives for Turbidity 16 Table 2 - Results of Ecoregion Analysis 16 Table 3 — ACL Sampling Data taken by Regional Water Board Staff 17 Table 4 - Required Monitoring Elements for Risk Levels 21 Table 5 - Storm Water Effluent Monitoring Requirements by Risk Level 23 Table 6 - Receiving Water Monitoring Requirements 26 Table 7 - Combined Risk Level Matrix 29 Table 8 -National Oceanic and Atmospheric Administration (NOAA) Definition of Probability of Precipitation (PoP) 31 Table 9 - Qualified SWPPP Developer/ Qualified SWPPP Practitioner Certification Criteria 47 LIST OF FIGURES Figure 1 -Statewide Map of K * LS 28 Figure 2 - Suite of Storm Events 37 Figure 3 - Northern CA (2009) Counties / Cities With SUSMP-Plus Coverage 39 Figure 4 - Southern CA (2009) Counties / Cities With SUSMP-Plus Coverage 40 Figure 5 - Schematic of the Lane Relationship 42 Figure 6 - Channel Changes Associated with Urbanization 43 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 I. BACKGROUND A. History In 1972, the Federal Water Pollution Control Act (also referred to as the Clean Water Act [CWA]) was amended to provide that the discharge of pollutants to waters of the United States from any point source is unlawful unless the discharge is,in compliance with a National Pollutant Discharge Elimination System (NPDES) permit. The 1987 amendments to the CWA added Section 402(p), which establishes a framework for regulating municipal and industrial storm water discharges under the NPDES Program. On November 16, 1990, the U.S. Environmental Protection Agency (USEPA) published final regulations that established storm water permit application requirements for specified categories of industries. The regulations provide that discharges of storm water to waters of the United States from construction projects that encompass five or more acres of soil disturbance are effectively prohibited unless the discharge is in compliance with an NPDES Permit. Regulations (Phase II Rule) that became final on December 8, 1999 lowered the permitting threshold from five acres to one acre. While federal regulations allow two permitting options for storm water discharges (Individual Permits and General Permits), the State Water Board has elected to adopt only one statewide General Permit at this time that will apply to most storm water discharges associated with construction activity. On August 19, 1999, the State Water Board reissued the General Construction Storm Water Permit (Water Quality Order 99-08-DWQ). On December 8, 1999 the State Water Board amended Order 99-08- DWQ to apply to sites as small as one acre. The General Permit accompanying this fact sheet regulates storm water runoff from construction sites. Regulating many storm water discharges under one permit will greatly reduce the administrative burden associated with permitting individual storm water discharges. To obtain coverage under this General Permit, dischargers shall electronically file the Permit Registration Documents (PRDs), which includes a Notice of Intent (NOI), Storm Water Pollution Prevention Plan (SWPPP), and other compliance related documents required by this General Permit and mail the appropriate permit fee to the State Water Board. It is expected that as the storm water program develops, the Regional Water Quality Control Boards (Regional Water Boards) may issue General Permits or Individual Permits containing more specific permit provisions. When this occurs, this General Permit will no longer regulate those dischargers. B. Legal Challenges and Court Decisions 1. Early Court Decisions Shortly after the passage of the CWA, the USEPA promulgated regulations exempting most storm water discharges from the NPDES permit requirements. (See 40 C.F.R. § 125.4 (1975); see also Natural Resources Defense Council v. Costle (D.C. Cir. 1977) 568 F.2d 1369, 1372 (Costle); Defenders of Wildlife v. Browner (9th Cir. 1999) 191 F.3d 1159, 1163 (Defenders of Wildlife).) When environmental groups challenged this exemption in federal court, the District of Columbia Court of Appeals invalidated the regulation, holding that the USEPA "does not have authority to exempt categories of point sources from the permit requirements of [CWA] § 402." (Costle, 568 F.2d at 1377.) The Costle court rejected the USEPA's argument that effluent -based storm sewer regulation was administratively infeasible because of the variable nature of storm water pollution and the number of affected storm sewers throughout the country. (Id. at 1377-82.) Although the court acknowledged the practical problems relating to storm sewer regulation, the court found the USEPA had the flexibility under the CWA to design regulations that would overcome these problems. (ld. at 1379-83.) In particular, the court pointed to general permits and permits based on requiring best management practices (BMPs). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 During the next 15 years, the USEPA made numerous attempts to reconcile the statutory requirement of point source regulation with the practical problem of regulating possibly millions of diverse point source discharges of storm water. (See Defenders of Wildlife, 191 F.3d at 1163; see also Gallagher, Clean Water Act in Environmental Law Handbook (Sullivan, edit., 2003) p. 300 (Environmental Law Handbook); Eisen, Toward a Sustainable Urbanism: Lessons from Federal Regulation of Urban Storm Water Runoff (1995) 48 Wash. U.J. Urb. & Contemp. L.1, 40-41 [Regulation of Urban Storm Water Runoff].) In 1987, Congress amended the CWA to require NPDES permits for storm water discharges. (See CWA § 402(p), 33 U.S.C. § 1342(p); Defenders of Wildlife, 191 F.3d at 1163; Natural Resources Defense Council v. USEPA (9th Cir. 1992) 966 F.2d 1292, 1296.) In these amendments, enacted as part of the Water Quality Act of 1987, Congress distinguished between industrial and municipal storm water discharges. With respect to industrial storm water discharges, Congress provided that NPDES permits "shall meet all applicable provisions of this section and section 1311 [requiring the USEPA to establish effluent limitations under specific timetables]." (CWA § 402(p)(3)(A), 33 U.S.C. § 1342(p)(3)(A); see also Defenders of Wildlife, 191 F.3d at 1163-64. ) In 1990, USEPA adopted regulations specifying what activities were considered "industrial" and thus required discharges of storm water associated with those activities to obtain coverage under NPDES permits. (55 Fed. Reg. 47,990 (1990); 40 C.F.R. § 122.26(b)(14).) Construction activities, deemed a subset of the industrial activities category, must also be regulated by an NPDES permit. (40 C.F.R. § 122.26(b)(14)(x)). In 1999, USEPA issued regulations for "Phase II" of storm water regulation, which required most small construction sites (1-5 acres) to be regulated under the NPDES program. (64 Fed. Reg. 68,722; 40 C.F.R. § 122.26(b)(15)(i).) 2. Court Decisions on Public Participation Two recent federal court opinions have vacated USEPA rules that denied meaningful public review of NPDES permit conditions. On January 14, 2003, the Ninth Circuit Court of Appeals held that certain aspects of USEPA's Phase II regulations governing MS4s were invalid primarily because the general permit did not contain express requirements for public participation. (Environmental Defense Center v. USEPA (9th Cir. 2003) 344 F.3d 832.) Specifically, the court determined that applications for general permit coverage (including the Notice of Intent (NOI) and Storm Water Management Program (SWMP)) must be made available to the public, the applications must be reviewed and determined to meet the applicable standard by the permitting authority before coverage commences, and there must be a process to accommodate public hearings. (Id. at 852-54.) Similarly, on February 28, 2005, the Second Circuit Court of Appeals held that the USEPA's confined animal feeding operation (CAFO) rule violated the CWA because it allowed dischargers to write their own nutrient management plans without public review. (WaterkeeperAlliance v. USEPA (2d Cir. 2005) 399 F.3d 486.) Although neither decision involved the issuance of construction storm water permits, the State Water Board's Office of Chief Counsel has recommended that the new General Permit address the courts' rulings where feasible'. ' In Texas Independent Producers and Royalty Owners Assn. v. USEPA (7th Cir. 2005) 410 F.3d 964, the Seventh Circuit Court of Appeals held that the USEPA's construction general permit was not required to provide the public with the opportunity for a public hearing on the Notice of Intent or Storm Water Pollution Prevention Plan. The Seventh Circuit briefly discussed why it agreed with the Ninth Circuit's dissent in Environmental Defense Center, but 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 The CWA and the USEPA's regulations provide states with the discretion to formulate permit terms, including specifying best management practices (BMPs), to achieve strict compliance with federal technology -based and water quality -based standards. (Natural Resources Defense Council v. USEPA (9th Cir. 1992) 966 F.2d 1292, 1308.) Accordingly, this General Permit has developed specific BMPs as well as numeric action levels (NALs) in order to achieve these minimum federal standards. In addition, the General Permit requires a SWPPP and REAP (another dynamic, site -specific plan) to be developed but has removed all language requiring the discharger to implement these plans — instead, the discharger is required to comply with specific requirements. By requiring the dischargers to implement these specific BMPs and NALs, this General Permit ensures that the dischargers do not "write their own permits." As a result this General Permit does not require each discharger's SWPPP and REAP to be reviewed and approved by the Regional Water Boards. This General Permit also requires dischargers to electronically file all permit -related compliance documents. These documents include, but are not limited to, NOls, SWPPPs, annual reports, Notice of Terminations (NOTs), and numeric action level (NAL) exceedance reports. Electronically submitted compliance information is immediately available to the public, as well as the Regional Water Quality Control Board (Regional Water Board) offices, via the Internet. In addition, this General Permit enables public review and hearings on permit applications when appropriate. Under this General Permit, the public clearly has a meaningful opportunity to participate in the permitting process. generally did not discuss the substantive holdings in Environmental Defense Center and Waterkeeper Alliance, because neither court addressed the initial question of whether the plaintiffs had standing to challenge the permits at issue. However, notwithstanding the Seventh Circuit's decision, it is not binding or controlling on the State Water Board because California is located within the Ninth Circuit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 C. Blue Ribbon Panel of Experts and Feasibility of Numeric Effluent Limitations In 2005 and 2006, the State Water Board convened an expert panel (panel) to address the feasibility of numeric effluent limitations (NELs) in California's storm water permits. Specifically, the panel was asked to address: "Is it technically feasible to establish numeric effluent limitations, or some other quantifiable limit, for inclusion in storm water permits? How would such limitations or criteria be established, and what information and data would be required?" "The answers should address industrial general permits, construction general permits, and area -wide municipal permits. The answers should also address both technology -based limitations or criteria and water quality -based limitations or criteria. In evaluating establishment of any objective criteria, the panel should address all of the following: The ability of the State Water Board to establish appropriate objective limitations or criteria; How compliance determinations would be made; The ability of dischargers and inspectors to monitor for compliance; and The technical and financial ability of dischargers to comply with the limitations or criteria." Through a series of public participation processes (State Water Board meetings, State Water Board workshops, and the solicitation of written comments), a number of water quality, public process and overall program effectiveness problems were identified. Some of these problems are addressed through this General Permit. D. Summary of Panel Findings on Construction Activities The panel's final report can be downloaded and viewed through links at www.waterboards,cai.gov or by clicking here2. The panel made the following observations: "Limited field studies indicate that traditional erosion and sediment controls are highly variable in performance, resulting in highly variable turbidity levels in the site discharge." "Site -to -site variability in runoff turbidity from undeveloped sites can also be quite large in many areas of California, particularly in more and regions with less natural vegetative cover and steep slopes." 2 htt y uww .waterboards...ca. ovls�tormwtrddocslnu..meric/s . anel final repo . df 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 4 Agreement No. 6574 "Active treatment technologies involving the use of polymers with relatively large storage systems now exist that can provide much more consistent and very low discharge turbidity. However, these technologies have as yet only been applied to larger construction sites, generally five acres or greater. Furthermore, toxicity has been observed at some locations, although at the vast majority of sites, toxicity has not occurred. There is also the potential for an accidental large release of such chemicals with their use." "To date most of the construction permits have focused on TSS and turbidity, but have not addressed other, potentially significant pollutants such as phosphorus and an assortment of chemicals used at construction sites." "Currently, there is no required training or certification program for contractors, preparers of soil erosion and sediment control Storm Water Pollution Prevention Plans, or field inspectors." "The quality of storm water discharges from construction sites that effectively employ BMPs likely varies due to site conditions such as climate, soil, and topography." "The States of Oregon and Washington have recently adopted similar concepts to the Action Levels described earlier." In addition, the panel made the following conclusions: "It is the consensus of the Panel that active treatment technologies make Numeric Limits technically feasible for pollutants commonly associated with storm water discharges from construction sites (e.g. TSS and turbidity) for larger construction sites. Technical practicalities and cost-effectiveness may make these technologies less feasible for smaller sites, including small drainages within a larger site, as these technologies have seen limited use at small construction sites. If chemical addition is not permitted, then Numeric Limits are not likely feasible." "The Board should consider Numeric Limits or Action Levels for other pollutants of relevance to construction sites, but in particular pH. It is of particular concern where fresh concrete or wash water from cement mixers/equipment is exposed to storm water." "The Board should consider the phased implementation of Numeric Limits and Action Levels, commensurate with the capacity of the dischargers and support industry to respond." E. How the Panel's Findings are Used in this General Permit The State Water Board carefully considered the findings of the panel and related public comments. The State Water Board also reviewed and considered the comments regarding statewide storm water policy and the reissuance of the Industrial General Permit. From the input received the State Water Board identified some permit and program performance gaps that are addressed in this General Permit. The Summary of Significant Changes (below) in this General Permit are a direct result of this process. F. Summary of Significant Changes in This General Permit The State Water Board has significant changes to Order 99-08-DWQ. This General Permit differs from Order 99-08-DWQ in the following significant ways: Rainfall Erdoswvily Waiver: this General Permit includes the option allowing a small construction site (>1 and <5 acres) to self -certify if the rainfall erosivity value (R value) for their site's given location and time frame compute to be less than or equal to 5. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 5 Agreement No. 6574 Technolqqy78ased Numeric Action Levels:: this General Permit includes NALs for pH and turbidity Risk -Based Permitting roach. this General Permit establishes three levels of risk possible for a construction site. Risk is calculated in two parts: 1) Project Sediment Risk, and 2) Receiving Water Risk, Minimum Requirements S ecified: this General Permit imposes more minimum BMPs and requirements that were previously only required as elements of the SWPPP or were suggested by guidance. Project Site Sail Characteristics Monitoring and Reporting: this General Permit provides the option for dischargers to monitor and report the soil characteristics at their project location. The primary purpose of this requirement is to provide better risk determination and eventually better program evaluation. Effluent monitoring and Reporting: this General Permit requires effluent monitoring and reporting for pH and turbidity in storm water discharges. The purpose of this monitoring is to evaluate whether NALs and NELs for Active Treatment Systems included in this General Permit are exceeded. Receiving Water Monitoring and Reporting: this General Permit requires some Risk Level 3 and LUP Type 3 dischargers to monitor receiving waters and conduct bioassessments. P' 'st-Coanstructimn Storm Water Performance Standards: this General Permit specifies runoff reduction requirements for all sites not covered by a Phase I or Phase II MS4 NPDES permit, to avoid, minimize and/or mitigate post -construction storm water runoff impacts. Rain Event Action Plan: this General Permit requires certain sites to develop and implement a Rain Event Action Plan (REAP) that must be designed to protect all exposed portions of the site within 48 hours prior to any likely precipitation event. Annual Reporting: this General Permit requires all projects that are enrolled for more than one continuous three-month period to submit information and annually certify that their site is in compliance with these requirements. The primary purpose of this requirement is to provide information needed for overall program evaluation and pubic information. Certificationi/Train Ing Re uirements for Key Project Personnel: this General Permit requires that key personnel (e.g., SWPPP preparers, inspectors, etc.) have specific training or certifications to ensure their level of knowledge and skills are adequate to ensure their ability to design and evaluate project specifications that will comply with General Permit requirements. Linear tinder around/Overhead Projects: this General Permit includes requirements for all Linear Underground/Overhead Projects (LUPs). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 6 Agreement No. 6574 II. RATIONALE A. General Permit Approach A general permit for construction activities is an appropriate permitting approach for the following reasons: 1. A general permit is an efficient method to establish the essential regulatory requirements for a broad range of construction activities under differing site conditions; 2. A general permit is the most efficient method to handle the large number of construction storm water permit applications; 3. The application process for coverage under a general permit is far less onerous than that for individual permit and hence more cost effective; 4. A general permit is consistent with USEPA's four -tier permitting strategy, the purpose of which is to use the flexibility provided by the CWA in designing a workable and efficient permitting system; and 5. A general permit is designed to provide coverage for a group of related facilities or operations of a specific industry type or group of industries. It is appropriate when the discharge characteristics are sufficiently similar, and a standard set of permit requirements can effectively provide environmental protection and comply with water quality standards for discharges. In most cases, the general permit will provide sufficient and appropriate management requirements to protect the quality of receiving waters from discharges of storm water from construction sites. There may be instances where a general permit is not appropriate for a specific construction project. A Regional Water Board may require any discharger otherwise covered under the General Permit to apply for and obtain an Individual Permit or apply for coverage under a more specific General Permit. The Regional Water Board must determine that this General Permit does not provide adequate assurance that water quality will be protected, or that there is a site -specific reason why an individual permit should be required. B. Construction Activities Covered 1. Construction activity subject to this General Permit: Any construction or demolition activity, including, but not limited to, clearing, grading, grubbing, or excavation, or any other activity that results in a land disturbance of equal to or greater than one acre. Construction activity that results in land surface disturbances of less than one acre if the construction activity is part of a larger common plan of development or sale of one or more acres of disturbed land surface. Construction activity related to residential, commercial, or industrial development on lands currently used for agriculture including, but not limited to, the construction of buildings related to agriculture that are considered industrial pursuant to USEPA regulations, such as dairy barns or food processing facilities. Construction activity associated with LUPs including, but not limited to, those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment and associated ancillary facilities) and include, but are not limited to, underground utility mark -out, potholing, concrete 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 7 Agreement No. 6574 and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/tower pad and cable/wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/or pavement repair or replacement, and stockpile/borrow locations. Discharges of sediment from construction activities associated with oil and gas exploration, production, processing, or treatment operations or transmission facilities.' Storm water discharges from dredge spoil placement that occur outside of U.S. Army Corps of Engineers jurisdiction (upland sites) and that disturb one or more acres of land surface from construction activity are covered by this General Permit. Construction projects that intend to disturb one or more acres of land within the jurisdictional boundaries of a CWA § 404 permit should contact the appropriate Regional Water Board to determine whether this permit applies to the project. 2. Linear Underground/Overhead Projects (LUPs) subject to this General Permit: Underground/overhead facilities typically constructed as LUPs include, but are not limited to, any conveyance, pipe, or pipeline for the transportation of any gaseous, liquid (including water, wastewater for domestic municipal services), liquescent, or slurry substance; any cable line or wire for the transmission of electrical energy; any cable line or wire for communications (e.g., telephone, telegraph, radio or television messages); and associated ancillary facilities. Construction activities associated with LUPs include, but are not limited to, those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment and associated ancillary facilities) and include, but are not limited to, underground utility mark -out, potholing, concrete and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/tower pad and cable/wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/or pavement repair or replacement, and stockpile/borrow locations. Water Quality Order 2003-0007-DWQ regulated construction activities associated with small LUPs that resulted in land disturbances greater than one acre, but less than five acres. These projects were considered non-traditional construction projects. Attachment A of this Order now regulates all construction activities from LUPs resulting in land disturbances greater than one acre. 3. Common Plan of Development or Sale USEPA regulations include the term "common plan of development or sale" to ensure that acreage within a common project does not artificially escape the permit requirements because construction activities are phased, split among smaller parcels, or completed by different owners/developers. In the absence of an ' Pursuant to the Ninth Circuit Court of Appeals' decision in NRDC v. EPA (9th Cir. 2008) 526 F.3d 591, and subsequent denial of the USEPA's petition for reconsideration in November 2008, oil and gas construction activities discharging storm water contaminated only with sediment are no longer exempt from the NPDES program. 4 A construction site that includes a dredge and/or fill discharge to any waiter of the United States (e.gi., wetland, channel, pond, or marine water) requires a CWA Section 404 permit from the U.S. Army Corps of Engineers and a CWA Section 401 Water Quality Certification from the Regional Water Board or State Water Board. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 8 Agreement No. 6574 exact definition of "common plan of development or sale," the State Water Board is required to exercise its regulatory discretion in providing a common sense interpretation of the term as it applies to construction projects and permit coverage. An overbroad interpretation of the term would render meaningless the clear 'one acre" federal permitting threshold and would potentially trigger permitting of almost any construction activity that occurs within an area that had previously received area -wide utility or road improvements. Construction projects generally receive grading and/nr hiiilding permits (Loral Permits) from local authorities prior to initiating construction activity. These Local Permits spell out the scope of the project, the parcels involved, the type of construction approved, etc. Referring to the Local Permit helps define "common plan of development or sale." In cases such as tract home development, a Local Permit will include all phases of the construction project including rough grading, utility and road installation, and vertical construction. All construction activities approved in the Local Permit are part of the common plan and must remain under the General Permit until construction is completed. For custom home construction, Local Permits typically only approve vertical construction as the rough grading, utilities, and road improvements were already independently completed under the a previous Local Permit. In the case of a custom home site, the homeowner must submit plans and obtain a distinct and separate Local Permit from the local authority in order to proceed. It is not the intent of the State Water Board to require permitting for an individual homeowner building a custom home on a private lot of less than one acre if it is subject to a separate Local Permit. Similarly, the installation of a swimming pool, deck, or landscaping that disturbs less than one acre that was not part of any previous Local Permit are not required to be permitted. The following are several examples of construction activity of less than one acre that would require permit coverage: a. A landowner receives a building permit(s) to build tract homes on a 100-acre site split into 200 one-third acre parcels, (the remaining acreage consists of streets and parkways) which are sold to individual homeowners as they are completed. The landowner completes and sells all the parcels except for two. Although the remaining two parcels combined are less than one acre, the landowner must continue permit coverage for the two parcels. b. One of the parcels discussed above is sold to another owner who intends to complete the construction as already approved in the Local Permit. The new landowner must file Permit Registration Documents (PRDs) to complete the construction even if the new landowner is required to obtain a separate Local Permit. c. Landowner in (1) above purchases 50 additional one half -acre parcels adjacent to the original 200-acre project. The landowner seeks a Local Permit (or amendment to existing Local permit) to build on 20 parcels while leaving the remaining 30 parcels for future development. The landowner must amend PRDs to include the 20 parcels 14 days prior to commencement of construction activity on those parcels. C. Construction Activities Not Covered 1. Traditional Construction Projects Not Covered This General Permit does not apply to the following construction activity: a. Routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 9 Agreement No. 6574 b. Disturbances to land surfaces solely related to agricultural operations such as disking, harrowing, terracing and leveling, and soil preparation. c, Discharges of storm water from areas on tribal lands; construction on tribal lands is regulated by a federal permit. d. Discharges of storm water within the Lake Tahoe Hydrologic Unit. The Lahontan Regional Water Board has adopted its own permit to regulate storm water discharges from construction activity in the Lake Tahoe Hydrologic Unit (Regional Water Board 6SLT). Owners of construction projects in this watershed must apply for the Lahontan Regional Water Board permit rather than the statewide Construction General Permit. Construction projects within the Lahontan region must also comply with the Lahontan Region Project Guideline for Erosion Control (R6T-2005-0007 Section), which can be found at http-//www.waterboards.ca.govilahontan/`Ad'opted Carders/2Ot05/r6t 2005 0007. df e. Construction activity that disturbs less than one acre of land surface, unless part of a larger common plan of development or the sale of one or more acres of disturbed land surface. f. Construction activity covered by an individual NPDES Permit for storm water discharges. g. Landfill construction activity that is subject to the Industrial General Permit. h. Construction activity that discharges to Combined Sewer Systems. i. Conveyances that discharge storm water runoff combined with municipal sewage. j. Discharges of storm water identified in CWA § 402(/)(2), 33 U.S.C. § 1342(/)(2). 2. Linear Projects Not Covered a. LUP construction activity does not include linear routine maintenance projects. Routine maintenance projects are projects associated with operations and maintenance activities that are conducted on existing lines and facilities and within existing right-of-way, easements, franchise agreements, or other legally binding agreements of the discharger. Routine maintenance projects include, but are not limited to projects that are conducted to: I. Maintain the original purpose of the facility or hydraulic capacity. il. Update existing lines5 and facilities to comply with applicable codes, standards, and regulations regardless if such projects result in increased capacity. Repairing leaks. 5Update existing lines includes replacing existing lines with new materials or pipes. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 10 Agreement No. 6574 Routine maintenance does not include construction of news lines or facilities resulting from compliance with applicable codes, standards, and regulations. Routine maintenance projects do not include those areas of maintenance projects that are outside of an existing right-of-way, franchise, easements, or agreements. When a project must secure new areas, those areas may be subject to this General Permit based on the area of disturbed land outside the original right-of-way, easement, or agreement. b. LUP construction activity does not include field activities associated with the planning and design of a project (e.g., activities associated with route selection). c. Tie-ins conducted immediately adjacent to "energized" or "pressurized" facilities by the discharger are not considered construction activities where all other LUP construction activities associated with the tie-in are covered by an NOI and SWPPP of a third party or municipal agency. 3. EPA's Small Construction Rainfall Erosivity Waiver EPA's Storm Water Phase II Final Rule provides the option for a Small Construction Rainfall Erosivity Waiver. This waiver applies to small construction sites between 1 and 5 acres, and allows permitting authorities to waive those sites that do not have adverse water quality impacts. Dischargers eligible for this waiver are exempt from Construction General Permit Coverage. In order to obtain the waiver, the discharger must certify to the State Water Board that small construction activity will occur only when the rainfall erosivity factor is less than 5 ("R" in the Revised Universal Soil Loss Equation). The period of construction activity begins at initial earth disturbance and ends with final stabilization. Where vegetation will be used for final stabilization, the date of installation of a practice that provides interim non -vegetative stabilization can be used for the end of the construction period. The operator must agree (as a condition waiver eligibility) to periodically inspect and properly maintain the area until the criteria for final stabilization as defined in the General Permit have been met. If use of this interim stabilization eligibility condition was relied on to qualify for the waiver, signature on the waiver with a certification statement constitutes acceptance of and commitment to complete the final stabilization process. The discharger must submit a waiver certification to the State Board prior to commencing construction activities. USEPA funded a cooperative agreement with Texas A&M University to develop an online rainfall erosivity calculator. Dischargers can access the calculator from EPA's website at: ww wr,epa qov'/npdes/storm water/cqp. Use of the calculator allows the discharger to determine potential eligibility for the rainfall erosivity waiver. It may also be useful in determining the time periods during which construction activity could be waived from permit coverage. 6New lines are those that are not associated with existing facilities and are not part of a project to update or replace existing lines. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 11 Agreement No. 6574 D. Obtaining and Terminating Permit Coverage The appropriate Legally Responsible Person (LRP) must obtain coverage under this General Permit. To obtain coverage, the LRP or the LRP's Approved Signatory must file Permit Registration Documents (PRDs) prior to the commencement of construction activity. Failure to obtain coverage under this General Permit for storm water discharges to waters of the United States is a violation of the CWA and the California Water Code. To obtain coverage under this General Permit, LRPs must electronically file the PRDs, which include a Notice of Intent (NOI), Storm Water Pollution Prevention Plan (SWPPP), and other documents required by this General Permit, and mail the appropriate permit fee to the State Water Board. It is expected that as the storm water program develops, the Regional Water Boards may issue General Permits or Individual Permits that contain more specific permit provisions. When this occurs, this General Permit will no longer regulate those dischargers that obtain coverage under Individual Permits. Any information provided to the Regional Water Board shall comply with the Homeland Security Act and any other federal law that concerns security in the United States; any information that does not comply should not be submitted. The application requirements of the General Permit establish a mechanism to clearly identify the responsible parties, locations, and scope of operations of dischargers covered by the General Permit and to document the discharger's knowledge of the General Permit's requirements. This General Permit provides a grandfathering exception to existing dischargers subject to Water Quality Order No. 99-08-DWQ. Construction projects covered under Water Quality Order No. 99-08-DWQ shall obtain permit coverage at Risk Level 1. LUP projects covered under Water Quality Order No. 2003-0007- DWQ shall obtain permit coverage at LUP Type 1. The Regional Water Boards have the authority to require Risk Determination to be performed on projects currently covered under Water Quality Order No. 99-08-DWQ and 2003-0007-DWQ where they deem necessary. LRPs must file a Notice of Termination (NOT) with the Regional Water Board when construction is complete and final stabilization has been reached or ownership has been transferred. The discharger must certify that all State and local requirements have been met in accordance with this General Permit. In order for construction to be found complete, the discharger must install post -construction storm water management measures and establish a long-term maintenance plan. This requirement is intended to ensure that the post -construction conditions at the project site do not cause or contribute to direct or indirect water quality impacts (i.e., pollution and/or hydromodification) upstream and downstream. Specifically, the discharger must demonstrate compliance with the post -construction standards set forth in this General Permit (Section XIII). The discharger is responsible for all compliance issues including all annual fees until the NOT has been filed and approved by the local Regional Water Board. E. Discharge Prohibitions This General Permit authorizes the discharge of storm water to surface waters from construction activities that result in the disturbance of one or more acres of land, provided that the discharger satisfies all permit conditions set forth in the Order. This General Permit prohibits the discharge of pollutants other than storm water and non -storm water discharges authorized by this General Permit or another NPDES permit. This General Permit also prohibits all discharges which contain a hazardous substance in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. In addition, this General Permit incorporates discharge prohibitions contained in water quality control plans, as implemented by the nine Regional Water Boards. Discharges to Areas of Special Biological Significance (ASBS) are prohibited unless covered by an exception that the State Water Board has approved. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 12 Agreement No. 6574 Non -storm water discharges include a wide variety of sources, including improper dumping, spills, or leakage from storage tanks or transfer areas. Non -storm water discharges may contribute significant pollutant loads to receiving waters. Measures to control spills, leakage, and dumping, and to prevent illicit connections during construction must be addressed through structural as well as non-structural BMPs. The State Water Board recognizes, however, that certain non -storm water discharges may be necessary for the completion of construction projects. Authorized non -storm water discharges may include those from de -chlorinated potable water sources such as: fire hydrant flushing, irrigation of vegetative erosion control measures, pipe flushing and testing, water to r_.nntrol deist, iincontaminated ground water dewatering, and other discharges not subject to a separate general NPDES permit adopted by a region. Therefore this General Permit authorizes such discharges provided they meet the following conditions. These authorized non -storm water discharges must: 1. be infeasible to eliminate; 2. comply with BMPs as described in the SWPPP; 3. filter or treat, using appropriate technology, all dewatering discharges from sedimentation basins; 4. meet the NALs for pH and turbidity; and 5. not cause or contribute to a violation of water quality standards. Additionally, authorized non -storm water discharges must not be used to clean up failed or inadequate construction or post -construction BMPs designed to keep materials onsite. Authorized non -storm water dewatering discharges may require a permit because some Regional Water Boards have adopted General Permits for dewatering discharges. This General Permit prohibits the discharge of storm water that causes or threatens to cause pollution, contamination, or nuisance. F. Effluent Standards for All Types of Discharges 1. Technology -Based Effluent Limitations Permits for storm water discharges associated with construction activity must meet all applicable provisions of Sections 301 and 402 of the CWA. These provisions require controls of pollutant discharges that utilize best available technology economically achievable (BAT) for toxic pollutants and non conventional pollutants and best conventional pollutant control technology (BCT) for conventional pollutants. Additionally, these provisions require controls of pollutant discharges to reduce pollutants and any more stringent controls necessary to meet water quality standards. The USEPA has already established such limitations, known as effluent limitation guidelines (ELGs), for some industrial categories. This is not the case with construction discharges. In instances where there are no ELGs the permit writer is to use best professional judgment (BPJ) to establish requirements that the discharger must meet using BAT/BCT technology. This General Permit contains only narrative effluent limitations and does not contain numeric effluent limitations, except for Active Treatment Systems (ATS). Order No. 2009-0009-DWQ, as originally adopted by the State Water Board on September 2, 2009, contained numeric effluent limitations for pH (within the range of 6.0 and 9.0 pH units) and turbidity (500 NTU) that applied only to Risk Level 3 and LUP Type 3 construction sites. The State Water Board adopted the numeric effluent limitations as technology -based effluent limitations based upon its best professional judgment. The California Building Industry Association, the Building Industry Legal Defense 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 13 Agreement No. 6574 Foundation, and the California Business Properties Association (petitioners) challenged Order No. 2009- 0009-DWQ in California Building Industry Association et al. v. State Water Resources Control Board. On December 27, 2011, the Superior Court issued a judgment and writ of mandamus. The Superior Court ruled in favor of the State Water Board on almost all of the issues the petitioners raised, but the Superior Court invalidated the numeric effluent limitations for pH and turbidity for Risk Level 3 and LUP Type 3 sites because it determined that the State Water Board did not have sufficient BMP performance data to support those numeric effluent limitations. Therefore, the Superior Court concluded that the State Water Board did not comply with the federal regulations that apply to the use of best professional judgment. In invalidating the numeric effluent limitations, the Superior Court also suspended two ancillary requirements (a compliance storm event provision and receiving water monitoring at Risk Level 3 and LUP Type 3 sites that violated the numeric effluent limitations) that related solely to the invalidated numeric effluent limitations. As a result of the Superior Court's writ of mandamus, this Order no longer contains numeric effluent limitations for pH and turbidity, except for ATS. In addition, as a result of the Superior Court's writ of mandamus, the receiving water monitoring requirements for Risk Level 3 and LUP Type 3 sites were suspended until the State Water Board amended this Order to restore the receiving water monitoring requirements. As amended, this Order now requires Risk Level 3 and LUP Type 3 Dischargers with direct discharges to surface waters to conduct receiving water monitoring whenever their effluent exceeds specified receiving water monitoring triggers. The receiving water monitoring triggers were established at the same levels as the previous numeric effluent limitations (effluent pH outside the range of 6.0 and 9.0 pH units or turbidity exceeding 500 NTU). In restoring the receiving water monitoring requirements, the State Water Board determined that it was appropriate to require receiving water monitoring for these types of sites with direct discharges to surface waters that exceeded the receiving water monitoring triggers under any storm event scenarios, because these sites represent the highest threat to receiving water quality. An exceedance of a receiving water monitoring trigger does not constitute a violation of this General Permit. These receiving water monitoring requirements, take effect on the effective date of the amendment to this Order. BAT/BCT technologies not only include passive systems such as conventional runoff and sediment control, but -also treatment systems such as coagulation/flocculation using sand filtration, when appropriate. Such technologies allow for effective treatment of soil particles less 0.02 mm (medium silt) in diameter. The discharger must install structural -controls, as necessary, such as erosion and sediment controls that meet BAT and BCT to achieve compliance with water quality standards. The narrative effluent limitations constitute compliance with the requirements of the CWA. Because the permit is an NPDES permit, there is no legal requirement to address the factors set forth in Water Code sections 13241 and 13263, unless the permit is more stringent than what federal law requires. (See City of Burbank v. State Water Resources Control Bd. (2005) 35 Cal.4th 613, 618, 627.) None of the requirements in this permit are more stringent than the minimum federal requirements, which include technology -based requirements achieving BAT/BCT and strict compliance with water quality standards. The inclusion of numeric effluent limitations (NELs) in the permit for Active Treatment Systems does not cause the permit to be more stringent than current federal law. NELs and best management practices are simply two different -methods of achieving the same federal requirement: strict compliance with state water quality standards. Federal law authorizes both narrative and numeric effluent limitations to meet state water quality standards. The use of NELs to achieve compliance with water quality standards is not a more stringent requirement than the use of BMPs. (State Water Board Order No. WQ 2006-0012 (Boeing).) Accordingly, the State Water Board does not need to take into account the factors in Water Code sections 13241 and 13263. The State Water Board has concluded that the establishment of BAT/BCT will not create or aggravate other environmental problems through increases in air pollution, solid waste generation, or energy consumption. —While there may be a slight increase in non -water quality impacts due to the implementation of additional monitoring or the construction of additional BMPs, these impacts will be negligible in comparison with the construction activities taking place on site and would be justified by the water quality benefits associated with compliance. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 14 Agreement No. 6574 pH Receiving Water Monitoring Trigger Given the potential contaminants, the minimum standard method for control of pH in runoff requires the use of preventive measures such as avoiding concrete pours during rainy weather, covering concrete and directing flow away from fresh concrete if a pour occurs during rain, covering scrap drywall and stucco materials when stored outside and potentially exposed to rain, and other housekeeping measures. If necessary, pH -impaired storm water from construction sites can be treated in a filter or settling pond or basin, with additional natural or chemical treatment required to meet pH limits set forth in this permit The basin or pond acts as a collection point and holds storm water for a sufficient period for the contaminants to be settled out, either naturally or artificially, and allows any additional treatment to take place. The State Water Board considers these techniques to be equivalent to BCT. In determining the pH concentration trigger for discharges, the State Water Board used BPJ to set these limitations. The chosen trigger was established by calculating three standard deviations above and below the mean pH of runoff from highway construction sites' in California. Proper implementation of BMPs should result in discharges that are within the range of 6.0 to 9.0 pH Units. Turbidity Receiving Water Monitoring Trigger The Turbidity receiving water monitoring trigger of 500 NTU is a technology -based trigger and was developed using three different analyses aimed at finding the appropriate threshold to set the technology - based limit to ensure environmental protection, effluent quality and cost-effectiveness. The analyses fell into three, main types: (1) an ecoregion-specific dataset developed by Simon et. al. (2004)$; (2) Statewide Regional Water Quality Control Board enforcement data; and (3) published, peer -reviewed studies and reports on in -situ performance of best management practices in terms of erosion and sediment control on active construction sites. A 1:3 relationship between turbidity (expressed as NTU) and suspended sediment concentration (expressed as mg/L) is assumed based on a review of suspended sediment and turbidity data from three gages used in the USGS National Water Quality Assessment Program: USGS 11074000 SANTA ANA R BL PRADO DAM CA USGS 11447650 SACRAMENTO R A FREEPORT CA USGS 11303500 SAN JOAQUIN R NR VERNALIS CA The receiving water monitoring trigger represents staff determination that the trigger value is the most practicable based on available data. The turbidity receiving water monitoring trigger represents a bridge between the narrative effluent limitations and receiving water limitations. To support this receiving water monitoring trigger, State Water Board staff analyzed construction site discharge information (monitoring data, estimates) and receiving water monitoring information. Since the turbidity receiving water monitoring trigger represents an appropriate threshold level expected at a site, compliance with this value does not necessarily represent compliance with either the narrative effluent limitations (as enforced through the BAT/BCT standard) or the receiving water limitations. In the San Diego region, some inland surface waters have a receiving water objective for turbidity equal to 20 NTU. Obviously a discharge up to, but not exceeding, the turbidity receiving water monitoring trigger of Caltrans Construction Sites Runoff Characterization Study, 2002. Available at: htt -,// .dot,.ca. o:v/h /etiv/storm water/odf/CTSW-HT-02-05 . df. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 15 Agreement No. 6574 500 NTU may still cause or contribute to the exceedance of the 20 NTU standard. Most of the waters of the State are protected by turbidity objectives based on background conditions. Table 1 - Regio nal Water Board Basin Plans„ Water Qualpt Ob'ectives for Turbidit % , � } ° y, r 1 �!J�prllr �!F ���ri. �� fr '/ f� r r, iF / du r, d o�'l)r�/^, � 1, " ; W��Ji '/ I/���/%l'?aiil�'���ff� 'NY" l r� Ni f /I;r!', �! 1 Based on All levels 20% backround......._........_......._....._ ................... aaa 2 Based on > 50 NTU 10% background _ mm. _W.. . Based on 0-50 JTU 20%. background 50-100 JTU 10 NTU > 100 JTU 10% 4 Based on 0-50 NTU 20% background > 50 NTU 10% .��... 5 Based on 0-5 NTU 1 NTU background 5-50 NTU 20% 50-100 NTU 10 NTU ........ .-..................._................_. >100 NTU 10% 6 Based on �.._..._...._ All levels . 10% background .. __ ..._....._ ........ .... Based on N/A N/A background _ .............._�............................ 8........-Based on 0-50 NTU background 50-100 NTU 10 NTU ww >100 NTU 10% 9 _.._............... Inland Surface ...... . .... _..... Waters, 20 NTU All others, based on background 0-50 NTU 20% 50-100 NTU 10 NTU >100 NTU 10% Table 2 shows the suspended sediment concentrations at the 1.5 year flow recurrence interval for the 12 ecoregions in California from Simon et. al (2004). Table 2 - 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 16 Agreement No. 6574 If a 1:3 relationship between turbidity and suspended sediment is assumed, the median turbidity is 544 NTU. The following table is composed of turbidity readings measured in NTUs from administrative civil liability (ACL) actions for construction sites from 2003 - 2009. This data was derived from the complete listing of construction -related ACLs for the six year period. All ACLs were reviewed and those that included turbidimeter readings at the point of storm water discharge were selected for this dataset. Table 3 — ACL Sam lnr Data taken i 'Re innal Water Board Staff ._..............�..... WDID# Region .Di�s...................�. ...._...................m.. i charger `Turbidity (NTU) 5S34C331884 5S Bradshaw 1800 Interceptor Section 6B 0 5S Bridalwood 1670 Subdivision 5S48C336297 �5�...�����_�...... , Cheyenne at—......._......�....1629..........�—... Browns Valley_ ................_.......����—.......... ... 5R32C314271 .._5........................... R Grizzly Ranch 1400 Construction 6A090406008 6T EI Dorado County 97.4 _....................................... Department of Transportation, _ W5S03C346861 „ m mmmmmmm -Anora Creek .............................m_. 5S TML 1600' Development, LLC .._ 6A39 C325917 6T ___.... ...Northstar Village See Subdata Set Subdata Set- Turbidity for point of storm water runoff dischn Date Turbidity Location (NTU) 10/5/2006..........900 Middle M......................� �_� artis Creek 11/2/2006 190 Middle Martis Creek 01/04/2007 36 West Fork, West Martis Creek 02/08/2007�180 �.. Middlew.wwti.Martis Creek 02/09/2007 130 ... .... Middle MartiLs Creek 02/09/2007 290 M.................._ITITIT.......T fiddle Martis _a_............__W...________— Creek 02/09/2007 100 w — _ West Fork, West Martis Creek .........._._ 02/10/2007 28 Middle Martis Creek 02/10/2007 23 _.......... —... W....._ Middle Martis Creek 02/10/2007.. 32 Mid �.�.�..�eM—���.a www..... �.��..... dlartis Creek /10/2007 12 Middle Martis Creek 02/10/2007 60 West Fork, West Martis Creek 02/10/2007 ___ West Fork, West Marti........_s Creek at Northstar Village A 95% confidence interval for mean turbidity in an ACL order was constructed. The data set used was a small sample size, so the 500 NTU (the value derived as the receiving water monitoring trigger for this General Permit) needed to be verified as a possible population mean. In this case, the population refers to a hypothetical population of turbidity measurements of which our sample of 20 represents. A t- distribution was assumed due to the small sample size: 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 17 Agreement No. 6574 Mean: 5..1.2.23NTU .......................... ......................._. Standard Deviation: 686.85 Margin of Error: 321.45 Confidence Interval: 190.78 NTU (Low) 833.68 NTU (High) Based on a constructed 95% confidence interval, an ACL order turbidity measurement will be between 190.78 — 833.68 NTU. 500 NTU falls within this range. Using the same data set, a small -sample hypothesis test was also performed to test if the ACL turbidity data set contains enough information to cast doubt on choosing a 500 NTU as a mean. 500 NTU was again chosen due to its proposed use as an acceptable value. The test was carried out using a 95% confidence interval. Results indicated that the ACL turbidity data set does not contain significant sample evidence to reject the claim of 500 NTU as an acceptable mean for the ACL turbidity population. There are not many published, peer -reviewed studies and reports on in -situ performance of best management practices in terms of erosion and sediment control on active construction sites. The most often cited study is a report titled, "Improving the Cost Effectiveness of Highway Construction Site Erosion and Pollution Control" (Horner, Guedry, and Kortenhof 1990, http://www.wsdot.wa.gov/Research/Reports/200/200.1.htm). In a comment letter summarizing this report sent to the State Water Board, the primary author, Dr. Horner, states: "The most effective erosion control product was wood fiber mulch applied at two different rates along with a bonding agent and grass seed in sufficient time before the tests to achieve germination. Plots treated in this way reduced influent turbidity by more than 97 percent and discharged effluent exhibiting mean and maximum turbidity values of 21 and 73 NTU, respectively. Some other mulch and blanket materials performed nearly as well. These tests demonstrated the control ability of widely available BMPs over a very broad range of erosion potential." Other technologies studied in this report produced effluent quality at or near 100 NTU. It is the BPJ of the State Water Board staff that erosion control, while preferred, is not always an option on construction sites and that technology performance in a controlled study showing effluent quality directly leaving a BMP is always easier and cheaper to control than effluent being discharged from the project (edge of property, etc.). As a result, it is the BPJ of the State Water Board staff that it is not cost effective or feasible, at this time, for all risk level and type 3 sites in California to achieve effluent discharges with turbidity values that are less than 100 NTU. To summarize, the analysis showed that: (1) results of the Simon et. al dataset reveals turbidity values in background receiving water in California's ecoregions range from 16 NTU to 1716 NTU (with a mean of 544 NTU); (2) based on a constructed 95% confidence interval, construction sites will be subject to administrative civil liability (ACL) when their turbidity measurement falls between 190.78 — 833.68 NTU; and (3) sites with highly controlled discharges employing and maintaining good erosion control practices can discharge effluent from the BMP with turbidity values less than 100 NTU. State Water Board staff has determined, using its BPJ, that it is most cost effective to set the receiving water monitoring trigger for turbidity at 500 NTU. i. Compliance Storm Event While this General Permit no longer contains "compliance storm event" exceptions from technology -based NELs, the "compliance storm event" exception from the ATS NELs remain in effect. See Section K of this Fact Sheet, and Attachment F of this General Permit for more information. a. TMDLs and Waste Load Allocations Dischargers located within the watershed of a CWA § 303(d) impaired water body, for which a TMDL for sediment has been adopted by the Regional Water Board or USEPA, must comply with the approved TMDL if it identifies "construction activity" or land disturbance as a source of sediment. If it does, the 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 18 Agreement No. 6574 TMDL should include a specific waste load allocation for this activity/source. The discharger, in this case, may be required by a separate Regional Water Board order to implement additional BMPs, conduct additional monitoring activities, and/or comply with an applicable waste load allocation and implementation schedule. If a specific waste load allocation has been established that would apply to a specific discharge, the Regional Water Board may adopt an order requiring specific implementation actions necessary to meet that allocation. In the instance where an approved TMDL has specified a general waste load allocation to construction storm water discharges, but no specific requirements for construction sites have been identified in the TMDI , dischargers must consult with the state TMDL authority9 to confirm that adherence to a SWPPP that meets the requirements of the General Permit will be consistent with the approved TMDL. 2. Determining Compliance with Effluent Standards a. Technology -Based Numeric Action Levels (NALs) This General Permit contains technology -based NALs for pH and turbidity, and requirements for effluent monitoring at all Risk level 2 & 3,, and LUP Type 2 & 3 sites. Numeric action levels are essentially numeric benchmark values for certain parameters that, if exceeded in effluent sampling, trigger the discharger to take actions. Exceedance of an NAL does not itself constitute a violation of the General Permit. If the discharger fails to take the corrective action required by the General Permit, though, that may consititute a violation. The primary purpose of NALs is to assist dischargers in evaluating the effectiveness of their on -site measures. Construction sites need to employ many different systems that must work together to achieve compliance with the permit's requirements. The NALs chosen should indicate whether the systems are working as intended. Another purpose of NALs is to provide information regarding construction activities and water quality impacts. This data will provide the State and Regional Water Boards and the rest of the storm water community with more information about levels and types of pollutants present in runoff and how effective the dischargers BMPs are at reducing pollutants in effluent. The State Water Board also hopes to learn more about the linkage between effluent and receiving water quality. In addition, these requirements will provide information on the mechanics needed to establish compliance monitoring programs at construction sites in future permit deliberations. I. pH The chosen limits were established by calculating one standard deviation above and below the mean pH of runoff from highway construction sites10 in California. Proper implementation of BMPs should result in discharges that are within the range of 6.5 to 8.5 pH Units. 9 htt i/www.waterboards,gg.gov/tmd /tmr40t I. Caltrans Construction Sites Runoff Characterization Study, 2002. Available at: htt l/www.dot.ca,aov`/ha/env/storm w2terlradf"CTSyw-RT-02.055.od '. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 19 Agreement No. 6574 The Caltrans study included 33 highway construction sites throughout California over a period of four years, which included 120 storm events. All of these sites had BMPs in place that would be generally implemented at all types of construction sites in California. ii. Turbidity BPJ was used to develop an NAL that can be used as a learning tool to help dischargers improve their site controls, and to provide meaningful information on the effectiveness of storm water controls. A statewide turbidity NAL has been set at 250 NTU. G. Receiving Water Limitations Construction -related activities that cause or contribute to an exceedance of water quality standards must be addressed. The dynamic nature of construction activity gives the discharger the ability to quickly identify and monitor the source of the exceedances. This is because when storm water mobilizes sediment, it provides visual cues as to where corrective actions should take place and how effective they are once implemented. This General Permit requires that storm water discharges and authorized non -storm water discharges must not contain pollutants that cause or contribute to an exceedance of any applicable water quality objective or water quality standards. The monitoring requirements in this General Permit for sampling and analysis procedures will help determine whether BMPs installed and maintained are preventing pollutants in discharges from the construction site that may cause or contribute to an exceedance of water quality standards. Water quality standards consist of designated beneficial uses of surface waters and the adoption of ambient criteria necessary to protect those uses. When adopted by the State Water Board or a Regional Water Board, the ambient criteria are termed "water quality objectives." If storm water runoff from construction sites contains pollutants, there is a risk that those pollutants could enter surface waters and cause or contribute to an exceedance of water quality standards. For that reason, dischargers should be aware of the applicable water quality standards in their receiving waters. (The best method to ensure compliance with receiving water limitations is to implement BMPs that prevent pollutants from contact with storm water or from leaving the construction site in runoff.) In California, water quality standards are published in the Basin Plans adopted by each Regional Water Board, the California Toxics Rule (CTR), the National Toxics Rule (NTR), and the Ocean Plan. Dischargers can determine the applicable water quality standards by contacting Regional Water Board staff or by consulting one of the following sources. The actual Basin Plans that contain the water quality standards can be viewed at the website of the appropriate Regional Water Board. (bl!p.Li/www.waterboards,ca._qov/regions,htmi), the State Water Board site for statewide plans (ht1 :Pi www.waterboards.ca. ovl Ins ols/index.htm4), or the USEPA regulations for the NTR and CTR (40 C.F.R. §§ 131.36-38). Basin Plans and statewide plans are also available by mail from the appropriate Regional Water Board or the State Water Board. The USEPA regulations are available at h1tpJ/www.epa.qov/. Additional information concerning water quality standards can be accessed through htt ://w,w r.waterboards.ca. ov/stormwtrp en const.html. H. Training Qualifications and Requirements The Blue Ribbon Panel (BRP) made the following observation about the lack of industry -specific training requirements: "Currently, there is no required training or certification program for contractors, preparers of soil erosion and sediment control Storm Water Pollution Prevention Plans, or field inspectors." 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 20 Agreement No. 6574 Order 99-08-DWQ required that all dischargers train their employees on how to comply with the permit, but it did not specificy a curriculum or certification program. This has resulted in inconsistent implementation by all affected parties - the dischargers, the local governments where the construction activity occurs, and the regulators required to enforce 99-08-DWQ. This General Permit requires Qualified SWPPP Developers and practitioners to obtain appropriate training, and makes this curriculum mandatory two years after adoption, to allow time for course completion. The State and Regional Water Board are working with many stakeholders to develop the curriculum and mechanisms needed to develop and deliver the courses. To ensure that the preparation, implementation, and oversight of the SWPPP is sufficient for effective pollution prevention, the Qualified SWPPP Developer and Qualified SWPPP Practitioners responsible for creating, revising, overseeing, and implementing the SWPPP must attend a State Water Board - sponsored or approved Qualified SWPPP Developer and Qualified SWPPP Practitioner training course. I. Sampling, Monitoring, Reporting and Record Keeping 1. Traditional Construction Monitoring Requirements This General Permit requires visual monitoring at all sites, and effluent water quality at all Risk Level 2 & 3 sites. It requires receiving water monitoring at some Risk Level 3 sites. All sites are required to submit annual reports, which contain various types of information, depending on the site characteristics and events. A summary of the monitoring and reporting requirements is found in Table 4. Table 4 - Required Monitoring Elements for Risk Levels Risk Level 1 Risk Level 2 Risk Level 3 three types required for all Risk Levels: non -storm water, pre -rain and post - rain a. Visual where applicable H, turbidii As needed for all pH, turbidity Risk Levels (see below) not required not required (if Receiving Water Monitoring Trigger exceeded) pH, turbidity and SSC. Bioassessment for sites 30 acres or larcer'. All dischargers are required to conduct quarterly, non -storm water visual inspections. For these inspections, the discharger must visually observe each drainage area for the presence of (or indications of prior) unauthorized and authorized non -storm water discharges and their sources. For storm -related inspections, dischargers must visually observe storm water discharges at all discharge locations within two business days after a qualifying event. For this requirement, a qualifying rain event is one producing precipitation of/z inch or more of discharge. Dischargers must conduct a post -storm event inspection to (1) identify whether BMPs were adequately designed, implemented, and effective, and (2) identify any additional BMPs necessary and revise the SWPPP accordingly. Dischargers must maintain on -site records of all visual observations, personnel performing the observations, observation dates, weather conditions, locations observed, and corrective actions taken in response to the observations. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 21 Agreement No. 6574 b. Non -Visible Pollutant Monitoring This General Permit requires that all dischargers develop a sampling and analysis strategy for monitoring pollutants that are not visually detectable in storm water. Monitoring for non -visible pollutants must be required at any construction site when the exposure of construction materials occurs and where a discharge can cause or contribute to an exceedance of a water quality objective. Of significant concern for construction discharges are the pollutants found in materials used in large quantities at construction sites throughout California and exposed throughout the rainy season, such as cement, flyash, and other recycled materials or by-products of combustion. The water quality standards that apply to these materials will depend on their composition. Some of the more common storm water pollutants from construction activity are not CTR pollutants. Examples of non -visible pollutants include glyphosate (herbicides), diazinon and chlorpyrifos (pesticides), nutrients (fertilizers), and molybdenum (lubricants). The use of diazinon and chlorpyrifos is a common practice among landscaping professionals and may trigger sampling and analysis requirements if these materials come into contact with storm water. High pH values from cement and gypsum, high pH and SSC from wash waters, and chemical/fecal contamination from portable toilets, also are not CTR pollutants. Although some of these constituents do have numeric water quality objectives in individual Basin Plans, many do not and are subject only to narrative water quality standards (i.e. not causing toxicity). Dischargers are encouraged to discuss these issues with Regional Water Board staff and other storm water quality professionals. The most effective way to avoid the sampling and analysis requirements, and to ensure permit compliance, is to avoid the exposure of construction materials to precipitation and storm water runoff. Materials that are not exposed do not have the potential to enter storm water runoff, and therefore receiving waters sampling is not required. Preventing contact between storm water and construction materials is one of the most important BMPs at any construction site. Preventing or eliminating the exposure of pollutants at construction sites is not always possible. Some materials, such as soil amendments, are designed to be used in a manner that will result in exposure to storm water. In these cases, it is important to make sure that these materials are applied according to the manufacturer's instructions and at a time when they are unlikely to be washed away. Other construction materials can be exposed when storage, waste disposal or the application of the material is done in a manner not protective of water quality. For these situations, sampling is required unless there is capture and containment of all storm water that has been exposed. In cases where construction materials may be exposed to storm water, but the storm water is contained and is not allowed to run off the site, sampling will only be required when inspections show that the containment failed or is breached, resulting in potential exposure or discharge to receiving waters. The discharger must develop a list of potential pollutants based on a review of potential sources, which will include construction materials soil amendments, soil treatments, and historic contamination at the site. The discharger must review existing environmental and real estate documentation to determine the potential for pollutants that could be present on the construction site as a result of past land use activities. Good sources of information on previously existing pollution and past land uses include I. Environmental Assessments; ii. Initial Studies; iii. Phase 1 Assessments prepared for property transfers; and iv. Environmental Impact Reports or Environmental Impact Statements prepared under the requirements of the National Environmental Policy Act or the California Environmental Quality Act. In some instances, the results of soil chemical analyses may be available and can provide additional information on potential contamination. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 22 Agreement No. 6574 The potential pollutant list must include all non -visible pollutants that are known or should be known to occur on the construction site including, but not limited to, materials that: I. are being used in construction activities; II. are stored on the construction site; III. were spilled during construction operations and not cleaned up; iv. were stored (or used) in a manner that created the potential for a release of the materials during past land use activities; V. were spilled during previous land use activities and not cleaned up; or Vi. were applied to the soil as part of past land use activities. C. Effluent Monitoring Federal regulations" require effluent monitoring for discharges subject to NALs. Subsequently, all Risk Level 2 and 3 dischargers must perform sampling and analysis of effluent discharges to characterize discharges associated with construction activity from the entire area disturbed by the project. Dischargers must collect samples of stored or contained storm water that is discharged subsequent to a storm event producing precipitation of/z inch or more at the time of discharge. Table 5 - Storm Water Effluent Monitoring Requirements by Risk Level Risk Level 1 when applicable non -visible pollutant parameters (if applicable Risk Level 2 Minimum of 3 samples per day during qualifying pH, turbidity, and non -visible pollutant rain event characterizing discharges associated parameters (if applicable) with construction activity from the entire project disturbed area. wawa Risk Level 3 Minimum of 3 samples per day during qualifying pH, turbidity, and non -visible pollutant rain event characterizing discharges associated parameters if applicable with construction activity from the entire project disturbed area. Risk Level 1 dischargers must analyze samples for: i. any parameters indicating the presence of pollutants identified in the pollutant source assessment required in Attachment C contained in the General Permit. " 40 C.F.R. § 122.44. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 23 Agreement No. 6574 Risk Level 2 dischargers must analyze samples for: I. pH and turbidity; II. any parameters indicating the presence of pollutants identified in the pollutant source assessment required in Attachment D contained in the General Permit, and III. any additional parameters for which monitoring is required by the Regional Water Board. Risk Level 3 dischargers must analyze samples for: 1. pH, turbidity; II. any parameters indicating the presence of pollutants identified in the pollutant source assessment required in Attachment E contained in the General Permit, and any additional parameters for which monitoring is required by the Regional Water Board. 2. Linear Monitoring and Sampling Requirements Attachment A, establishes minimum monitoring and reporting requirements for all LUPs. It establishes different monitoring requirements depending on project complexity and risk to water quality. The monitoring requirements for Type 1 LUPs are less than Type 2 & 3 projects because Type 1 projects have a lower potential to impact water quality. A discharger shall prepare a monitoring program prior to the start of construction and immediately implement the program at the start of construction for LUPs. The monitoring program must be implemented at the appropriate level to protect water quality at all times throughout the life of the project. a. Type 1 LUP Monitoring Requirements A discharger must conduct daily visual inspections of Type 1 LUPs during working hours while construction activities are occurring. Inspections are to be conducted by qualified personnel and can be conducted in conjunction with other daily activities. Inspections will be conducted to ensure the BMPs are adequate, maintained, and in place at the end of the construction day. The discharger will revise the SWPPP, as appropriate, based on the results of the daily inspections. Inspections can be discontinued in non -active construction areas where soil disturbing activities have been completed and final stabilization has been achieved (e.g., trench has been paved, substructures have been installed, and successful final vegetative cover or other stabilization criteria have been met). A discharger shall implement the monitoring program for inspecting Type 1 LUPs. This program requires temporary and permanent stabilization BMPs after active construction is completed. Inspection activities will continue until adequate permanent stabilization has been established and will continue in areas where re -vegetation is chosen until minimum vegetative coverage has been established. Photographs shall be taken during site inspections and submitted to the State Water Board. b. Type 2 & 3 LUP Monitoring Requirements A discharger must conduct daily visual inspections of Type 2 & 3 LUPs during working hours while construction activities are occurring. Inspections are to be conducted by qualified personnel and can be in conjunction with other daily activities. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 24 Agreement No. 6574 All dischargers of Type 2 & 3 LUPs are required to conduct inspections by qualified personnel of the construction site during normal working hours prior to all anticipated storm events and after actual storm events. During extended storm events, the discharger shall conduct inspections during normal working hours for each 24-hour period. Inspections can be discontinued in non -active construction areas where soil disturbing activities have been completed and final stabilization has been achieved (e.g., trench has been paved, substructures installed, and successful vegetative cover or other stabilization criteria have been met). The goals of these inspections are (1) to identify areas contributing to a storm water discharge; (2) to evaluate whether measures to reduce pollutant loadings identified in the SWPPP are adequate and properly installed and functioning in accordance with the terms of the General Permit; and (3) to determine whether additional control practices or corrective maintenance activities are needed. Equipment, materials, and workers must be available for rapid response to failures and emergencies. All corrective maintenance to BMPs shall be performed as soon as possible, depending upon worker safety. All dischargers shall develop and implement a monitoring program for inspecting Type 2 & 3 LUPs that require temporary and permanent stabilization BMPs after active construction is completed. Inspections will be conducted to ensure the BMPs are adequate and maintained. Inspection activities will continue until adequate permanent stabilization has been established and will continue in areas where revegetation is chosen until minimum vegetative coverage has been established. A log of inspections conducted before, during, and after the storm events must be maintained in the SWPPP. The log will provide the date and time of the inspection and who conducted the inspection. Photographs must be taken during site inspections and submitted to the State Water Board. c. Sampling Requirements for all LUP Project Types LUPs are also subject to sampling and analysis requirements for visible pollutants (i.e., sedimentation/siltation, turbidity) and for non -visible pollutants. Sampling for visible pollutants is required for Type 2 & 3 LUPs. Non -visible pollutant monitoring is required for pollutants associated with construction sites and activities that (1) are not visually detectable in storm water discharges, and (2) are known or should be known to occur on the construction site, and (3) could cause or contribute to an exceedance of water quality objectives in the receiving waters. Sample collection for non -visible pollutants must only be required (1) during a storm event when pollutants associated with construction activities may be discharged with storm water runoff due to a spill, or in the event there was a breach, malfunction, failure, and/or leak of any BMP, and (2) when the discharger has failed to adequately clean the area of material and pollutants. Failure to implement appropriate BMPs will trigger the same sampling requirements as those required for a breach, malfunction and/or leak, or when the discharger has failed to implement appropriate BMPs prior to the next storm event. Additional monitoring parameters may be required by the Regional Water Boards. It is not anticipated that many LUPs will be required to collect samples for pollutants not visually detected in runoff due to the nature and character of the construction site and activities as previously described in this fact sheet. Most LUPs are constructed in urban areas with public access (e.g., existing roadways, road shoulders, parking areas, etc.). This raises a concern regarding the potential contribution of pollutants from vehicle use and/or from normal activities of the public (e.g., vehicle washing, landscape fertilization, pest spraying, etc.) in runoff from the project site. Since the dischargers are not the land owners of the project area and are not able to control the presence of these pollutants in the storm water that runs through their projects, it is not the intent of this General Permit to require dischargers to sample for these pollutants. This General Permit does not require the discharger to sample for these types of pollutants except where the discharger has brought materials onsite that contain these pollutants and when a condition (e.g., breach, failure, etc.) described above occurs. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 25 Agreement No. 6574 3. Receiving Water Monitoring In order to ensure that receiving water limitations are met, discharges subject to receiving water monitoring triggers (i.e., Risk Level 3 and LUP Type 3 sites) or numeric effluent limitations (i.e., Risk Level 3 and LUP Type 3 sites utilizing ATS with direct discharges into receiving waters) must also monitor the downstream receiving water(s) for turbidity, SSC, and pH (if applicable) when a receiving water monitoring trigger or NEL is exceeded. a. Bioassessment Monitoring This General Permit requires a bioassessment of receiving waters for dischargers of Risk Level 3 or LUP Type 3 construction projects equal to or larger than 30 acres with direct discharges into receiving waters. Benthic macroinvertebrate samples will be taken upstream and downstream of the site's discharge point in the receiving water. Bioassessments measure the quality of the stream by analyzing the aquatic life present. Higher levels of appropriate aquatic species tend to indicate a healthy stream; whereas low levels of organisms can indicate stream degradation. Active construction sites have the potential to discharge large amounts of sediment and pollutants into receiving waters. Requiring a bioassessment for large project sites, with the most potential to impact water quality, provides a snapshot of the health of the receiving water prior to initiation of construction activities. This snapshot can be used in comparison to the health of the receiving water after construction has commenced. Each ecoregion (biologically and geographically related area) in the State has a specific yearly peak time where stream biota is in a stable and abundant state. This time of year is called an Index Period. The bioassessment requirements in this General Permit, requires benthic macroinvertebrate sampling within a sites index period. The State Water Board has developed a map designating index periods for the ecoregions in the State (see State Water Board Website). This General Permit requires the bioassessment methods to be in accordance with the Surface Water Ambient Monitoring Program (SWAMP) in order to provide data consistency within the state as well as generate useable biological stream data. Table 6 - Receiving Water Monitoring Requirements Risk Level 1 /LUP Type 1 not required .................. Risk Level 2 / LUP Type 2 not required Risk Level 3 / LUP Type 3 If Receiving Water Monitoring Trigger exceeded: pH (if applicable), turbidity, and SSC. Bioassessment for sites 30 acres or larger. 4. Reporting Requirements a. NAL Exceedance Report All Risk Level 3 and LUP Type 3 dischargers must electronically submit all storm event sampling results to the State And Regional Boards, via the electronic data system, no later than 10 days after the conclusion of the storm event. b. Annual Report All dischargers must prepare and electronically submit an annual report no later than September 1 of each year using the Storm water Multi -Application Reporting and Tracking System (SMARTS). The 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 26 Agreement No. 6574 Annual Report must include a summary and evaluation of all sampling and analysis results, original laboratory reports, chain of custody forms, a summary of all corrective actions taken during the compliance year, and identification of any compliance activities or corrective actions that were not implemented. 5. Record Keeping According to 40 C.F.R. Parts 122.21(p) and 122.410), the discharger is required to retain paper or electronic copies of all records required by this General Permit for a period of at least three years from the date generated or the date submitted to the State Water Board or Regional Water Boards. A discharger must retain records for a period beyond three years as directed by Regional Water Board. J. Risk Determination 1. Traditional Projects a. Overall Risk Determination There are two major requirements related to site planning and risk determination in this General Permit. The project's overall risk is broken up into two elements — (1) project sediment risk (the relative amount of sediment that can be discharged, given the project and location details) and (2) receiving water risk (the risk sediment discharges pose to the receiving waters). Project Sediment Risk: Project Sediment Risk is determined by multiplying the R, K, and LS factors from the Revised Universal Soil Loss Equation (RUSLE) to obtain an estimate of project -related bare ground soil loss expressed in tons/acre. The RUSLE equation is as follows: A = (R)(K)(LS)(C)(P) Where: A = the rate of sheet and rill erosion R = rainfall -runoff erosivity factor K = soil erodibility factor LS = length -slope factor C = cover factor (erosion controls) P = management operations and support practices (sediment controls) The C and P factors are given values of 1.0 to simulate bare ground conditions. There is a map option and a manual calculation option for determining soil loss. For the map option, the R factor for the project is calculated using the online calculator at htt ://cf ub.e a. ov/n des/stormvMrater/LEW/lewCalculator.cfin. The product of K and LS are shown on Figure 1. To determine soil loss in tons per acre, the discharger multiplies the R factor times the value for K times LS from the map. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 27 Agreement No. 6574 Regional Board Bouridarraa USFPA EMAP Risk Categories kls / 0 0.2 0-3 0.4 = Q�i .4 016 ffP` 0.8 rr0,9 "o, 1.2 1.3- 1.4y /��/�,l / / %r/ / t�f/ ( 21 o State Water Resources Control Board,January 16, 2008 Figure 1 -Statewide Map of K * LS For the manual calculation option, the R factor for the project is calculated using the online calculator at htt :/icf ub.e e. ov/n des/slormwweter/LEW/lew Calctaletor..cfm. The K and LS factors are determined using Appendix 1. Soil loss of less than 15 tons/acre is considered low sediment risk. Soil loss between 15 and 75 tons/acre is medium sediment risk. Soil loss over 75 tons/acre is considered high sediment risk. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 28 Agreement No. 6574 The soil loss values and risk categories were obtained from mean and standard deviation RKLS values from the USEPA EMAP program. High risk is the mean RKLS value plus two standard deviations. Low risk is the mean RKLS value minus two standard deviations. Receiving Water Risk: Receiving water risk is based on whether a project drains to a sediment -sensitive waterbody. A sediment -sensitive waterbody is either on the most recent 303d list for waterbodies impaired for sediment; has a USEPA-approved Total Maximum Daily Load implementation plan for sediment; or has the beneficial uses of COLD, SPAWN, and MIGRATORY. A project that meets at least one of the three criteria has a high receiving water risk. A list of sediment - sensitive waterbodies will be posted on the State Water Board's website. It is anticipated that an interactive map of sediment sensitive water bodies in California will be available in the future. The Risk Levels have been altered by eliminating the possibility of a Risk Level 4, and expanding the constraints for Risk Levels 1, 2, and 3. Therefore, projects with high receiving water risk and high sediment risk will be considered a Risk Level 3 risk to water quality. In response to public comments, the Risk Level requirements have also been changed such that Risk Level 1 projects will be subject to minimum BMP and visual monitoring requirements, Risk Level 2 projects will be subject to NALs and some additional monitoring requirements, and Risk Level 3 projects will be subject to NALs, and more rigorous monitoring requirements such as receiving water monitoring and in some cases bioassessment. Table 7 - Combined Risk Level Matrix Combined Risk Level Matrix w�_�......................�....... W�uW�...... �...........................��...���_... w...................... _............ ..._ .. Sediment Risk .................................................. ` Low Medium High m `a Low Level Level m Y High Level 2 b. Effluent Standards All dischargers are subject to the narrative effluent limitations specified in the General Permit. The narrative effluent limitations require storm water discharges associated with construction activity to meet all applicable provisions of Sections 301 and 402 of the CWA. These provisions require controls of pollutant discharges that utilize BAT and BCT to reduce pollutants and any more stringent controls necessary to meet water quality standards. Risk Level 2 dischargers that pose a medium risk to water quality are subject to technology -based NALs for pH and turbidity. Risk Level 3 dischargers that pose a high risk to water quality are also subject to technology -based NALs for pH and turbidity. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 29 Agreement No. 6574 C. Good Housekeeping Proper handling and managing of construction materials can help minimize threats to water quality. The discharger must consider good housekeeping measures for: construction materials, waste management, vehicle storage & maintenance, landscape materials, and potential pollutant sources. Examples include; conducting an inventory of products used, implementing proper storage & containment, and properly cleaning all leaks from equipment and vehicles. d. Non -Storm Water Management Non -storm water discharges directly connected to receiving waters or the storm drain system have the potential to negatively impact water quality. The discharger must implement measures to control all non - storm water discharges during construction, and from dewatering activities associated with construction. Examples include; properly washing vehicles in contained areas, cleaning streets, and minimizing irrigation runoff. e. Erosion Control The best way to minimize the risk of creating erosion and sedimentation problems during construction is to disturb as little of the land surface as possible by fitting the development to the terrain. When development is tailored to the natural contours of the land, little grading is necessary and, consequently, erosion potential is lower.14 Other effective erosion control measures include: preserving existing vegetation where feasible, limiting disturbance, and stabilizing and re -vegetating disturbed areas as soon as possible after grading or construction activities. Particular attention must be paid to large, mass - graded sites where the potential for soil exposure to the erosive effects of rainfall and wind is great and where there is potential for significant sediment discharge from the site to surface waters. Until permanent vegetation is established, soil cover is the most cost-effective and expeditious method to protect soil particles from detachment and transport by rainfall. Temporary soil stabilization can be the single most important factor in reducing erosion at construction sites. The discharger is required to consider measures such as: covering disturbed areas with mulch, temporary seeding, soil stabilizers, binders, fiber rolls or blankets, temporary vegetation, and permanent seeding. These erosion control measures are only examples of what should be considered and should not preclude new or innovative approaches currently available or being developed. Erosion control BMPs should be the primary means of preventing storm water contamination, and sediment control techniques should be used to capture any soil that becomes eroded.12 Risk Level 3 dischargers pose a higher risk to water quality and are therefore additionally required to ensure that post -construction soil loss is equivalent to or less than the pre -construction levels. f. Sediment Control Sediment control BMPs should be the secondary means of preventing storm water contamination. When erosion control techniques are ineffective, sediment control techniques should be used to capture any soil that becomes eroded. The discharger is required to consider perimeter control measures such as: installing silt fences or placing straw wattles below slopes. These sediment control measures are only 12 U.S. Environmental Protection Agency. 2007. Developing Your Storm Water Pollution Prevention Plan: A Guide for Construction Sites. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 30 Agreement No. 6574 examples of what should be considered and should not preclude new or innovative approaches currently available or being developed. Because Risk Level 2 and 3 dischargers pose a higher risk to water quality, additional requirements for the application of sediment controls are imposed on these projects. This General Permit also authorizes the Regional Water Boards to require Risk Level 3 dischargers to implement additional site -specific sediment control requirements if the implementation of other erosion or sediment controls are not adequately protecting the receiving waters. g. Run-on and Runoff Control Inappropriate management of run-on and runoff can result in excessive physical impacts to receiving waters from sediment and increased flows. The discharger is required to manage all run-on and runoff from a project site. Examples include: installing berms and other temporary run-on and runoff diversions. Risk Level 1 dischargers with lower risks to impact water quality are not subject to the run-on and runoff control requirements unless an evaluation deems them necessary or visual inspections show that such controls are required. h. Inspection, Maintenance and Repair All measures must be periodically inspected, maintained and repaired to ensure that receiving water quality is protected. Frequent inspections coupled with thorough documentation and timely repair is necessary to ensure that all measures are functioning as intended. I. Rain Event Action Plan (REAP) A Rain Event Action Plan (REAP) is a written document, specific for each rain event. A REAP should be designed that when implemented it protects all exposed portions of the site within 48 hours of any likely precipitation event forecast of 50% or greater probability. This General Permit requires Risk Level 2 and 3 dischargers to develop and implement a REAP designed to protect all exposed portions of their sites within 48 hours prior to any likely precipitation event. The REAP requirement is designed to ensure that the discharger has adequate materials, staff, and time to implement erosion and sediment control measures that are intended to reduce the amount of sediment and other pollutants generated from the active site. A REAP must be developed when there is likely a forecast of 50% or greater probability of precipitation in the project area. (The National Oceanic and Atmospheric Administration (NOAA) defines a chance of precipitation as a probability of precipitation of 30% to 50% chance of producing precipitation in the project area.13 NOAA defines the probability of precipitation (PoP) as the likelihood of occurrence (expressed as a percent) of a measurable amount (0.01 inch or more) of liquid precipitation (or the water equivalent of frozen precipitation) during a specified period of time at any given point in the forecast area.) Forecasts are normally issued for 12- hour time periods. Descriptive terms for uncertainty and aerial coverage are used as follows: Table 8 -National Oceanic and Atmospheric Administration (NOAA) Definition of Probability of Precipitation (PoP) 13 h :/t'www.crhi.noaa. gvllorlsevereiwxterms.. Pt . 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 31 Agreement No. 6574 Expressions of Aerial Pop Uncertainty Coverage 0% none used none used 10% none used isolated 20% slight chance isolated 30-50% chance scattered 60-70% likely numerous 80-100% none used none used The discharger must obtain the precipitation forecast information from the National Weather Service Forecast Office (httDJ/www.srh.noaa.gov ). 2. Linear Projects a. Linear Risk Determination LUPs vary in complexity and water quality concerns based on the type of project. This General Permit has varying application requirements based on the project's risk to water quality. Factors that lead to the characterization of the project include location, sediment risk, and receiving water risk. Based on the location and complexity of a project area or project section area, LUPs are separated into project types. As described below, LUPs have been categorized into three project types. i. Type 1 LUPs Type 1 LUPs are those construction projects where. (1) 70 percent or more of the construction activity occurs on a paved surface and where areas disturbed during construction will be returned to preconstruction conditions or equivalent protection established at the end of the construction activities for the day, or (2) greater than 30 percent of construction activities occur within the non -paved shoulders or land immediately adjacent to paved surfaces, or where construction occurs on unpaved improved roads, including their shoulders or land immediately adjacent to them where: Areas disturbed during construction will be returned to pre -construction conditions or equivalent protection established at the end of the construction activities for the day to minimize the potential for erosion and sediment deposition, and 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 32 Agreement No. 6574 Areas where established vegetation was disturbed during construction will be stabilized and re -vegetated by the end of project. When required, adequate temporary stabilization Best Management Practices (BMPs) will be installed and maintained until vegetation is established to meet minimum cover requirements established in this General Permit for final stabilization. Type 1 LUPs typically do not have a high potential to impact storm water quality because (1) these construction activities are not typir:aily ccndurtPd during a rain event, (2) these projects are normally constructed over a short period of time14, minimizing the duration that pollutants could potentially be exposed to rainfall; and (3) disturbed soils such as those from trench excavation are required to be hauled away, backfilled into the trench, and/or covered (e.g., metal plates, pavement, plastic covers over spoil piles) at the end of the construction day. Type 1 LUPs are determined during the risk assessment found in Attachment A.1 to be 1) low sediment risk and low receiving water risk; 2) low sediment risk and medium receiving water risk; and 3) medium sediment risk and low receiving water risk. This General Permit requires the discharger to ensure a SWPPP is developed for these construction activities that is specific to project type, location and characteristics. II. Type 2 LUPs: Type 2 projects are determined to have a combination of High, Medium, and Low project sediment risk along with High, Medium, and Low receiving water risk. Like Type 1 projects, Type 2 projects are typically constructed over a short period of time. However, these projects have a higher potential to impact water quality because they: (1) typically occur outside the more urban/developed areas; (2) have larger areas of soil disturbance that are not closed or restored at the end of the day; (3) may have onsite stockpiles of soil, spoil and other materials; (4) cross or occur in close proximity to a wide variety of sensitive resources that may include, but are not limited to, steep topography and/or water bodies; and (5) have larger areas of disturbed soils that may be exposed for a longer time interval before final stabilization, cleanup and/or reclamation occurs. This General Permit requires the discharger to develop and implement a SWPPP for these construction activities that are specific for project type, location and characteristics. III. Type 3 LUPs: 14 Short period of time refers to a project duration of weeks to months, but typically less than one year in duration. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 33 Agreement No. 6574 Type 3 projects are determined to have a combination of High and Medium project sediment risk along with High and Medium receiving water risk. Similar to Type 2 projects, Type 3 projects have a higher potential to impact water quality because they: (1) typically occur outside of the more urban/developed areas; (2) have larger areas of soil disturbance that are not closed or restored at the end of the day; (3) may have onsite stockpiles of soil, spoil and other materials; (4) cross or occur in close proximity to a wide variety of sensitive resources that may include, but are not limited to, steep topography and/or water bodies; and (5) have larger areas of disturbed soils that may be exposed for a longer time interval before final stabilization, cleanup and/or reclamation occurs. This General Permit requires the discharger to develop and implement a SWPPP for these construction activities that are specific for project type, location, and characteristics. b. Linear Effluent Standards All LUPs are subject to the narrative effluent limitations specified in the General Permit. Type 2 and Type 3 projects are subject to technology -based NALs for pH and turbidity.. C. Linear Good Housekeeping Improper use and handling of construction materials could potentially cause a threat to water quality. In order to ensure proper site management of these construction materials, all LUP dischargers must comply with a minimum set of Good Housekeeping measures specified in Attachment A of this General Permit. d. Linear Non -Storm Water Management In order to ensure control of all non -storm water discharges during construction, all LUP dischargers must comply with the Non -Storm Water Management measures specified in Attachment A of this General Permit. e. Linear Erosion Control This General Permit requires all LUP dischargers to implement effective wind erosion control measures, and soil cover for inactive areas. Type 3 LUPs posing a higher risk to water quality are additionally required to ensure the post -construction soil loss is equivalent to or less than the pre -construction levels, f. Linear Sediment Control In order to ensure control and containment of all sediment discharges, all LUP dischargers must comply with the general Sediment Control measures specified in Attachment A or this General Permit. Additional requirements for sediment controls are imposed on Type 2 & 3 LUPs due to their higher risk to water quality. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 34 Agreement No. 6574 g. Linear Run-on and Runoff Control Discharges originating outside of a project's perimeter and flowing onto the property can adversely affect the quantity and quality of discharges originating from a project site. In order to ensure proper management of run-on and runoff, all LUPs must comply with the run-on and runoff control measures specified in Attachment A of this General Permit. Due to the lower risk of impacting water quality, Type 1 LUPs are not required to implement run-on and runoff controls unless deemed necessary by the discharger. h. Linear Inspection, Maintenance and Repair Proper inspection, maintenance, and repair activities are important to ensure the effectiveness of on -site measures to control water quality. In order to ensure that inspection, maintenance, and repair activities are adequately performed, the all LUP dischargers a re required to comply with the Inspection, Maintenance, and Repair requirements specified in Attachment A of this General Permit. K. ATS15 Requirements There are instances on construction sites where traditional erosion and sediment controls do not effectively control accelerated erosion. Under such circumstances, or under circumstances where storm water discharges leaving the site may cause or contribute to an exceedance of a water quality standard, the use of an Active Treatment System (ATS) may be necessary. Additionally, it may be appropriate to use an ATS when site constraints inhibit the ability to construct a correctly sized sediment basin, when clay and/or highly erosive soils are present., or when the site has very steep or long, slope lengths.16 Although treatment systems have been in use in some form since the mid-1990s, the ATS industry in California is relatively young, and detailed regulatory standards have not yet been developed. Many developers are using these systems to treat storm water discharges from their construction sites. The new ATS requirements set forth in this General Permit are based on those in place for small wastewater treatment systems, ATS regulations from the Central Valley Regional Water Quality Control Board (September 2005 memorandum "2005/2006 Rainy Season — Monitoring Requirements for Storm Water Treatment Systems that Utilize Chemical Additives to Enhance Sedimentation"), the Construction Storm Water Program at the State of Washington's Department of Ecology, as well as recent advances in technology and knowledge of coagulant performance and aquatic safety. The effective design of an ATS requires a detailed survey and analysis of site conditions. With proper planning, ATS performance can provide exceptional water quality discharge and prevent significant impacts to surface water quality, even under extreme environmental conditions. These systems can be very effective in reducing the sediment in storm water runoff, but the systems that use additives/polymers to enhance sedimentation also pose a potential risk to water quality (e.g., operational failure, equipment failure, additive/polymer release, etc.). The State Water Board is concerned about the potential acute and chronic impacts that the polymers and other chemical additives may have on fish and aquatic organisms if released in sufficient quantities or concentrations. In addition 15 An ATS is a treatment system that employs chemical coagulation, chemical flocculation, or electrocoagulation in order to reduce turbidity caused by fine suspended sediment. 16 Pitt, R., S. Clark, and D. Lake. 2006. Construction Site Erosion and Sediment Controls: Planning, Design, and Performance. DEStech Publications. Lancaster, PA. 370pp. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 35 Agreement No. 6574 to anecdotal evidence of polymer releases causing aquatic toxicity in California, the literature supports this concern 1' For example, catlonic polymers have been shown to bind with the negatively charged ,gills of fish, resulting in mechanical suffocation,'' Due to the potential toxicity impacts, which may be caused by the release of additives/polymers into receiving waters, this General Permit establishes residual polymer monitoring and toxicity testing requirements have been established in this General Permit for discharges from construction sites that utilize an ATS in order to protect receiving water quality and beneficial uses. The primary treatment process in an ATS is coagulation/flocculation. ATS's operate on the principle that the added coagulant is bound to suspended sediment, forming floc, which is gravitationally settled in tanks or a basin, or removed by sand filters. A typical installation utilizes an injection pump upstream from the clarifier tank, basin, or sand filters, which is electronically metered to both flow rate and suspended solids level of the influent, assuring a constant dose. The coagulant mixes and reacts with the influent, forming a dense floc. The floc may be removed by gravitational setting in a clarifier tank or basin, or by filtration. Water from the clarifier tank, basin, or sand filters may be routed through cartridge(s) and/or bag filters for final polishing. Vendor -specific systems use various methods of dose control, sediment/floc removal, filtration, etc., that are detailed in project -specific documentation. The particular coagulant/flocculant to be used for a given project is determined based on the water chemistry of the site because the coagulants are specific in their reactions with various types of sediments. Appropriate selection of dosage must be carefully matched to the characteristics of each site. ATS's are operated in two differing modes, either Batch or Flow -Through. Batch treatment can be defined as Pump -Treat -Hold -Test -Release. In Batch treatment, water is held in a basin or tank, and is not discharged until treatment is complete. Batch treatment involves holding or recirculating the treated water in a holding basin or tank(s) until treatment is complete or the basin or storage tank(s) is full. In Flow -Through treatment, water is pumped into the ATS directly from the runoff collection system or storm water holding pond, where it is treated and filtered as it flows through the system, and is then directly discharged. "Flow -Through Treatment" is also referred to as "Continuous Treatment." 1. Effluent Standards This General Permit establishes NELs for discharges from construction sites that utilize an ATS. These systems lend themselves to NELs for turbidity and pH because of their known reliable treatment. Advanced systems have been in use in some form since the mid-1990s. An ATS is considered reliable, can consistently produce a discharge of less than 10 NTU, and has been used successfully at many sites in several states since 1995 to reduce turbidity to very low levels.19 This General Permit contains "compliance storm event" exceptions from the technology -based NELs for ATS discharges. The rationale is that technology -based requirements are developed assuming a certain design storm. In the case of ATS the industry -standard design storm is 10-year, 24-hour (as stated in 17 Rom0en, K., B. Thu, and 0. Evensen. 2002. Immersion delivery of plasmid DNA II. A study of the potentials of a chitosan based delivery system in rainbow trout (Oncorhynchus mykiss) fry. Journal of Controlled Release 85: 215- 225. 18 Bullock, G., V. Blazer, S. Tsukuda, and S. Summerfelt. 2000. Toxicity of acidified chitosan for cultured rainbow trout (Oncorhynchus myki s), Aquaculture 185:273-280. 19 Currier, B., G. Minton R. Mitt, L. Roesner, K. Schiff, M. Stenstrom, E. Strassler, and E. Strecker. 2006. The Feasibility of Numeric Effluent Limits Applicable to Discharges of Storm Water Associated with Municipal, Industrial and Construction Activities. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 36 Agreement No. 6574 Attachment F of this General Permit), so the compliance storm event has been established as the 10-year 24-hour event as well to provide consistency. 2. Training Operator training is critical to the safe and efficient operation and maintenance of the ATS, and to ensure that all State Water Board monitoring and sampling requirements are met. The General Permit requires that all ATS operators have training specific to using ATS's liquid coagulants. L. Post -Construction Requirements Under past practices, new and redevelopment construction activities have resulted in modified natural watershed and stream processes. This is caused by altering the terrain, modifying the vegetation and soil characteristics, introducing impervious surfaces such as pavement and buildings, increasing drainage density through pipes and channels, and altering the condition of stream channels through straightening, deepening, and armoring. These changes result in a drainage system where sediment transport capacity is increased and sediment supply is decreased. A receiving channel's response is dependent on dominant channel materials and its stage of adjustment. Construction activity can lead to impairment of beneficial uses in two main ways. First, during the actual construction process, storm water discharges can negatively affect the chemical, biological, and physical properties of downstream receiving waters. Due to the disturbance of the landscape, the most likely pollutant is sediment, however pH and other non -visible pollutants are also of great concern. Second, after most construction activities are completed at a construction site, the finished project may result in significant modification of the site's response to precipitation. New development and redevelopment projects have almost always resulted in permanent post -construction water quality impacts because more precipitation ends up as runoff and less precipitation is intercepted, evapotranspired, and infiltrated. General Permit 99-08-DWQ required the SWPPP to include a description of all post -construction BMPs on a site and a maintenance schedule. An effective storm water management strategy must address the full suite of storm events (water quality, channel protection, overbank flood protection, extreme flood protection) (Figure 2). Figure 2 - Suite of Storm Events 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 37 Agreement No. 6574 The post -construction storm water performance standards in this General Permit specifically address water quality and channel protection events. Overbank flood protection and extreme flood protection events are tradltlonally dealt with in local drainage and flood protection ordinances. However, measures in this General Permit to address water quality and channel protection also reduce overbank and extreme flooding impacts. This General Permit aims to match post, construction runoff to pre -construction runoff for the 85`h percentile storm event, which not only reduces the risk of impact to the receiving water's channel morphology but also provides some protection of water quality. This General Permit clarifies that its runoff reduction requirements only apply to projects that lie outside of jurisdictions covered by a Standard Urban Storm water Management Plan (SUSMP) (or other more protective) post -construction requirements in either Phase I or Phase II permits. Figures 3 and 4, below, show the General Permit enrollees (to Order 99-08-DWQ, as of March 10, 2008) overlaid upon a map with SUSMP (or more protective) areas in blue and purple. Areas without blue or purple indicate where the General Permit's runoff reduction requirements would actually apply. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 38 Agreement No. 6574 Figure 3 - Northern CA (2009) Counties / Cities With SUSMP-Plus Coverage 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 39 Agreement No. 6574 Figure 4 - Southern CA (2009) Counties / Cities With SUSMP-Plus Coverage 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 40 Agreement No. 6574 Water Quality: This General Permit requires dischargers to replicate the pre -project runoff water balance (defined as the amount of rainfall that ends up as runoff) for the smallest storms up to the 85th percentile storm event, or the smallest storm event that generates runoff, whichever is larger. Contemporary storm water management generally routes these flows directly to the drainage system, increasing pollutant loads and potentially causing adverse effects on receiving waters. These smaller water quality events happen much more frequently than larger events and generate much higher pollutant loads on an annual basis. There are other adverse hydrolog"ur;al impacts thal residl frnm nut duisigning acrording to the site's re- construction water balance. In Maryland, Klein noted that baseflow decreases as the extent of urbanization increases. Ferguson and Suckling'' noted a, similar relation in watersheds in Georgia. On Long Island, Spinello and Simmons22 noted substantial decreases in base flow in intensely urbanized watersheds. The permit emphasizes runoff reduction through on -site storm water reuse, interception, evapo- transpiration and infiltration through non-structural controls and conservation design measures (e.g., downspout disconnection, soil quality preservation/enhancement, interceptor trees). Employing these measures close to the source of runoff generation is the easiest and most cost-effective way to comply with the pre -construction water balance standard. Using low -tech runoff reduction techniques close to the source is consistent with a number of recommendations in the literature.23 In many cases, BMPs implemented close to the source of runoff generation cast less than end -of the, pipe measures.za Dischargers are given the option of using Appendix 2 to calculate the required runoff volume or a watershed process -based, continuous simulation model such as the EPA's Storm Water Management Model (SWMMM) or Hydrologic Simulation Program Fortran (HSPF). Such methods used by the discharger will be reviewed by the Regional Water Board upon NOT application. Channel Protection: In order to address channel protection, a basic understanding of fluvial geomorphic concepts is necessary. A dominant paradigm in fluvial geomorphology holds that streams adjust their channel dimensions (width and depth) in response to long-term changes in sediment supply and bankfull discharge (1.5 to 2 year recurrence interval). The bankfull stage corresponds to the discharge at which channel maintenance is the most effective, that is, the discharge at which the moving sediment, forming or removing bars, forming or changing bends and meanders, and generally doing work that results in the average morphologic characteristics of channels. 25 Lane (1955 as cited in Rosgen 199626) showed the generalized relationship between sediment load, sediment size, stream discharge and stream slope in 20 Klein 1979 as cited in Delaware Department of Natural Resources (DDNR). 2004. Green Technology: The Delaware urban Runoff Management Approach. Dover, DE. 117 pp. 21 Ferguson and Suckling 1990 as cited Delaware Department of Natural Resources (DDNR). 2004. Green Technology: The Delaware Urban Runoff Management Approach. Dover, DE. 117 pp. 22 Center for Watershed Protection (CWP). 2000. The Practice of Watershed Protection: Techniques for protecting our nation's streams, lakes, rivers, and estuaries. Ellicott City, MD. 741 pp. 23 Bay Area Storm Water Management Agencies Association (BASMAA). 1997. Start at the Source: Residential Site Planning and Design Guidance Manual for Storm Water Quality Protection. Palo Alto, CA; McCuen, R.H. 2003 Smart Growth: hydrologic perspective. Journal of Professional Issues in Engineering Education and Practice. Vol (129), pp.151-154; Moglen, G.E. and S. Kim. 2007. Impervious imperviousness -are threshold based policies a good idea? Journal of the American Planning Association, Vol 73 No. 2. pp 161-171. 24 Delaware Department of natural Resources (DDNR). 2004. Green technology: The Delaware urban Runoff Management Approcah. Dover, DE. 117 pp. 25 Dunne„ T and L.B. Leopold. 1978. Water in Environmental Planning. San Francisco W.H. Freeman and Company 26 Rosgen. D.L. 1996. Applied River Morphology. Pagosa Springs. Wildland Hydrology 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 41 Agreement No. 6574 Figure 5. A change in any one of these variables sets up a series of mutual adjustments in the companion variables with a resulting direct change in the physical characteristics of the stream channel, . ".s d„ d F 01 SIZE —b. f 'ryrW 25Flei•.. Ada Y M> � o-- STKI 1il rir VA dP 0 dl ( Sediment LOAD ) x 1 Sediment SIZE I C>G ( Stream SLOPE ) x ( Stream DISCHARGE ) Figure 5 - Schematic of the Lane Relationship After Lane (1955) as cited in Rosgen (1996) Stream slope multiplied by stream discharge (the right side of the scale) is essentially an approximation of stream power, a unifying concept in fluvial geomorphology (Bledsoe 1999). Urbanization generally increases stream power and affects the resisting forces in a channel (sediment load and sediment size represented on the left side of the scale). During construction, sediment loads can increase from 2 to 40,000 times over pre -construction levels.27 Most of this sediment is delivered to stream channels during large, episodic rain events.28 This increased sediment load leads to an initial aggradation phase where stream depths may decrease as sediment fills the channel, leading to a decrease in channel capacity and increase in flooding and overbank deposition. A degradation phase initiates after construction is completed. Schumm et. al (1984) developed a channel evolution model that describes the series of adjustments from initial downcutting, to widening, to establishing new floodplains at lower elevations (Figure 6). 27 Goldman S.J., K. Jackson, and T.A. Bursztynsky. 1986. Erosion and Sediment Control Handbook. McGraw Hill, San Francisco. 26 Wolman 1967 as cited in Paul, M.P. and J.L. Meyer. 2001. Streams in the Urban Landscape. Annu. Rev.Ecol. Syst. 32: 333-365. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 42 Agreement No. 6574 I II FLOODPu►w- h < h, h < h, h jh j IV TERRAM h z h, h M lr'� MUD DRAPES III h > h� r'' TERRACE h V TERRACE h < h, BERM r, ADVE?M nOUS ROOTS SAID 8 MUD COUPLETS Figure 6 - Channel Changes Associated with Urbanization After Incised Channel Evolution Sequence in Schumm et. al 1984 Channel incision (Stage II) and widening (Stages III and to a lesser degree, Stage IV) are due to a number of fundamental changes on the landscape. Connected impervious area and compaction of pervious surfaces increase the frequency and volume of bankfull discharges.29 Increased drainage density (miles of stream length per square mile of watershed) also negatively impacts receiving stream channels.30 Increased drainage density and hydraulic efficiency leads to an increase in the 'frequency and volume of bankfull discharges because the time of concentration is shortened. Flows from engineered pipes and channels are also often "sediment starved" and seek to replenish their sediment supply from the channel. Encroachment of stream channels can also lead to an increase in stream slope, which leads to an increase in stream power. In addition, watershed sediment loads and sediment size (with size generally represented as the median bed and bank particle size, or d50) decrease during urbanization.31 This means 29 Booth, D. B. and C. R. Jackson. 1997. Urbanization of Aquatic Systems: Degradation Thresholds, Storm Water Detection, and the Limits of Mitigation. Journal of the American Water Resources Association Vol. 33, No.5, pp. 1077-1089. 30 May, C.W. 1998. Cumulative effects of urbanization on small streams in the Puget Sound Lowland ecoregion. Conference proceedings from Puget Sound Research '98 held March 12, 13 1998 in Seattle, WA; Santa Clara Valley Urban Runoff Pollution Prevention Program. 2002. Hydromodification Management Plan Literature Review. 80 pp. 31 Finkenbine, J.K., D.S. Atwater, and D.S. Mavinic. 2000. Stream health after urbanization. J. Am. Water Resour. Assoc. 36:1149-60; 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 43 Agreement No. 6574 that even if pre- and post -development stream power are the same, more erosion will occur in the post - development stage because the smaller particles are less resistant (provided they are non -cohesive). As shown in Stages II and III, the channel deepens and widens to accommodate the increased stream power and decrease in sediment load and sediment size. Channels may actually narrow as entrained sediment from incision is deposited laterally in the channel. After incised channels begin to migrate laterally (Stage III), bank erosion begins, which leads to general channel wid ning,33 At this point, a majority of the sediment that leaves a drainage area comes from within the channel, as opposed to the background and construction related hillslope contribution. Stage IV is characterized by more aggradation and localized bank instability. Stage V represents a new quasi -equilibrium channel morphology in balance with the new flow and sediment supply regime. In other words, stream power is in balance with sediment load and sediment size. The magnitude of the channel morphology changes discussed above varies along a stream network as well as with the age of development, slope, geology (sand -bedded channels may cycle through the evolution sequence in a matter of decades whereas clay -dominated channels may take much longer), watershed sediment load and size, type of urbanization, and land use history. It is also dependent on a channel's stage in the channel evolution sequence when urbanization occurs. Management strategies Pizzuto, J.E. W.S. Hession, and M. McBride. 2000. Comparing gravel -bed rivers in paired urban and rural catchments of southeastern Pennsylvania. Geology 28:79-82. 32 Hammer 1973 as cited in Delaware Department of Natural Resources (DDNR). 2004. Green Technology: The Delaware Urban Runoff Management Approach. Dover, DE. 117 pp; Booth, D.B. 1990. Stream Channel Incision Following Drainage Basin Urbanization. Water Resour. Bull. 26:407- 417. 33 Trimble, S.W. 1997. Contribution of Stream Channel Erosion to Sediment Yield from an Urbanizing Watershed. Science: Vol. 278 (21), pp. 1442-1444. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 44 Agreement No. 6574 must take into account a channel's stage of adjustment and account for future changes in the evolution of channel form (Stein and Zaleski 2005). 34 Traditional structural water quality BMPs (e.g. detention basins and other devices used to store volumes of runoff) unless they are highly engineered to provide adequate flow duration control, do not adequately protect receiving waters from accelerated channel bed and bank erosion, do not address post - development increases in runoff volume, and do not mitigate the decline in benthic macroinvertebrate communities in the rer:`:eivincd wate.rs35 suggest that structural BMPs are not as effective in protecting aquatic communities as a continuous riparian buffer of native vegetation. This is supported by the findings of Zucker and White36, where instream biological metrics were correlated with the extent of forested buffers. This General Permit requires dischargers to maintain pre -development drainage densities and times of concentration in order to protect channels and encourages dischargers to implement setbacks to reduce channel slope and velocity changes that can lead to aquatic habitat degradation. There are a number of other approaches for modeling fluvial systems Including statistical and physical models and simpler stream power mcdels.3" The use of these models In California is described in Stein and Zaleski (2005).38 Rather than prescribe a specific one -size -fats -all modeling method in this permit, the State Water Board intends to develop a stream power and channel evolution model -based framework to assess channels and develop a hierarchy of suitable analysis methods and management strategies. In time, this framework may become a State Water Board water quality control policy. Permit Linkage to Overbank and Extreme Flood Protection Site design BMPs (e.g. rooftop and impervious disconnection, vegetated swales, setbacks and buffers) filter and settle out pollutants and provide for more infiltration than is possible for traditional centralized structural BMPs placed at the lowest point in a site. They provide source control for runoff and lead to a reduction in pollutant loads. When implemented, they also help reduce the magnitude and volume of larger, less frequent storm events (e.g., 10-yr, 24-hour storm and larger), thereby reducing the need for expensive flood control infrastructure. Nonstructural BMPs can also be a landscape amenity, instead of a large isolated structure requiring substantial area for ancillary access, buffering, screening and maintenance facilities.25 The multiple benefits of using non-structural benefits will be critically important as the state's population increases and imposes strains upon our existing water resources. Maintaining predevelopment drainage densities and times of concentration will help reduce post - development peak flows and volumes in areas not covered under a municipal permit. The most effective way to preserve drainage areas and maximize time of concentration is to implement landform grading, 34 Stein, E.S. and S. Zaleski. 2005.Managing runoff to protect natural stream: the latest developments on investigation and management of hydromodification in California. Southern California Coastal Water Research Project Technical Report 475. 26 pp. 35 Horner, R.R. 2006. Investigation of the Feasibility and Benefits of Low -Impact Site Design Practices (LID) for the San Diego Region. Available at: htt : iwww" res"ectcleanv ater". a fP ermi Ir qase-study I'id. df. 36 Delaware Department of Natural Resources (DDNR). 2004..Green Technology, The Delaware Urban Runoff Management Approach. Dover, DE. 117 pp. 37 Finlayson, D.P. and D.R. Montgomery. 2003. Modeling large-scale fluvial erosion in geographic information ystems. Geomorphology (53), pp. 147-164). 3 Stein, E.S. and S. Zaleski. 2005.Managing runoff to protect natural stream: the latest developments on investigation and management of hydromodification in California. Southern California Coastal Water Research Project Technical Report 475. 26 pp. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 45 Agreement No. 6574 incorporate site design BMPs and implement distributed structural BMPs (e.g., bioretention cells, rain gardens, rain cisterns). M. Storm Water Pollution Prevention Plans USEPA's Construction General Permit requires that qualified personnel conduct inspections. USEPA defines qualified personnel as "a person knowledgeable in the principles and practice of erosion and sediment controls who possesses the skills to assess conditions at the construction site that could impact storm water quality and to assess the effectiveness of any sediment and erosion control measures selected to control the quality of storm water discharges from the construction activity. ,39 USEPA also suggests that qualified personnel prepare SWPPPs and points to numerous states that require certified professionals to be on construction sites at all times. States that currently have certification programs are Washington, Georgia, Florida, Delaware, Maryland, and New Jersey. The Permit 99-08-DWQ did not require that qualified personnel prepare SWPPPs or conduct inspections. However, to ensure that water quality is being protected, this General Permit requires that all SWPPPs be written, amended, and certified by a Qualified SWPPP Developer. A Qualified SWPPP Developer must possess one of the eight certifications and or registrations specified in this General Permit and effective two years after the adoption date of this General Permit, must have attended a State Water Board -sponsored or approved Qualified SWPPP Developer training course. Table 9 provides an overview of the criteria used in determining qualified certification titles for a QSD and QSP. 39 US Environmental Protection Agency. Stormwater Pollution Prevention Plans for Construction Activities. <http://cfpub.epa.gov/npdes/stormwater/swppp.cfm> and <http://www.epa.gov/npdes/pubs/sw_Swppp_guide.pdf>, 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 46 Agreement No. 6574 T� ible 9 - Qualified SW PP Develo er/ Qualified SWPPP Practitioner Certification Criteria ['17 1. Approval Process Professional Civil California 2. Code of Ethics Engineer 3. Accountability Both 4. Pre -requisites Professional 1. Approval Process Geologist or California 2. Code of Ethics Engineering 3. Accountability Geologist Both-, APre-re uisites 1. Approval Process Landscape California 2. Code of Ethics Architect 3. Accountability Both 4. Pre -requisites 1. Approval Process Professional American Institute of 2. Code of Ethics Hydrologist Hydrology 3. Accountability Both 4. Pre -requisites ....................... ........................................ Certified m __....._____________-._._._ Professional in 1. Approval Process Erosion and Enviro Cert International 2. Code of Ethics Sediment Inc. 3. Accountability Control TM 4. Pre -requisites CPESC) Both 5 Continuing Education Certified Inspector Inspector of Certified Ins 1. Approval Process 2. Code of Ethics of Sediment and Erosion ControlTA9 Sediment and Erosion 3. Accountability (CISEC) Control, Inc. 4. Pre -requisites QSP 5.mmContinuing Education Certified Erosion, 1. Approval Process Sediment and Enviro Cert International 2. Code of Ethics Storm Water Inc.. Accountability Inspector TM 4. Pre -requisites (CESSWI .. ..................__............. ......................._ �, m,,,. QSP 5. Continuin g Education ......................... .. Certified 1. Approval Process Professional in Enviro Cert International 2. Code of Ethics Storm Water Inc. 3. Accountability QualityTA4 4. Pre -requisites (CPSWQ)....._............._.............. _................__Both....,, ,. 5. Continuing Education..................� 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 47 Agreement No. 6574 The previous versions of the General Permit required development and implementation of a SWPPP as the primary compliance mechanism. The SWPPP has two major objectives: (1) to help identify the sources of sediment and other pollutants that affect the quality of storm water discharges; and (2) to describe and ensure the implementation of BMPs to reduce or eliminate sediment and other pollutants in storm water and non -storm water discharges. The SWPPP must include BMPs that address source control, BMPs that address pollutant control, and BMPs that address treatment control. This General Permit shifts some of the measures that were covered by this general requirement to specific permit requirements, each individually enforceable as a permit term. This General Permit emphasizes the use of appropriately selected, correctly installed and maintained pollution reduction BMPs. This approach provides the flexibility necessary to establish BMPs that can effectively address source control of pollutants during changing construction activities. These specific requirements also improve both the clarity and the enforceability of the General Permit so that the dischargers understand, and the public can determine whether the discharges are in compliance with, permit requirements. The SWPPP must be implemented at the appropriate level to protect water quality at all times throughout the life of the project. The SWPPP must remain on the site during construction activities, commencing with the initial mobilization and ending with the termination of coverage under the General Permit. For LUPs the discharger shall make the SWPPP available at the construction site during working hours while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, current copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio or telephone. Once construction activities are complete, until stabilization is achieved, the SWPPP shall be available from the SWPPP contact listed in the PRDs A SWPPP must be appropriate for the type and complexity of a project and will be developed and implemented to address project specific conditions. Some projects may have similarities or complexities, yet each project is unique in its progressive state that requires specific description and selection of BMPs needed to address all possible generated pollutants N. Regional Water Board Authorities Because this General Permit will be issued to thousands of construction sites across the State, the Regional Water Boards retain discretionary authority over certain issues that may arise from the discharges in their respective regions. This General Permit does not grant the Regional Water Boards any authority they do not otherwise have; rather, it merely emphasizes that the Regional Water Boards can take specific actions related to this General Permit. For example, the Regional Water Boards will be enforcing this General Permit and may need to adjust some requirements for a discharger based on the discharger's compliance history. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 48 Agreement No. 6574 State Water Resources Control Board Linda S. Adams Secretary for Division of Water Quality Environmental Protection 1001 1 Street • Sacramento, California 95814 • (916) 341-5455 Mailing Address: P.O. Box 100 • Sacramento, California • 95812-0100 Fax (916) 341-5463 • http://www.waterboards.ca.gov NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT FOR STORM WATER DISCHARGES ASSOCIATED WITH CONSTRUCTION AND LAND DISTURBANCE ACTIVITIES ORDER NO. 2009-0009-DWQ NPDES NO. CAS000002 Arnold Schwarzenegger Governor This Order was adopted by the State Water Resources Control September 2, 2009 Board on: This Order shall become effective on: July 1, 2010 This Order shall expire on: September 2, 2014 IT IS HEREBY ORDERED, that this Order supersedes Order No. 99-08-DWQ [as amended by Order No. 2010-0014-DWQ] except for enforcement purposes. The Discharger shall comply with the requirements in this Order to meet the provisions contained in Division 7 of the California Water Code (commencing with section 13000) and regulations adopted thereunder, and the provisions of the federal Clean Water Act and regulations and guidelines adopted thereunder. I, Jeanine Townsend, Clerk to the Board, do hereby certify that this Order with all attachments is a full, true, and correct copy of an Order adopted by the State Water Resources Control Board, on September 2, 2009. AYE: Vice Chair Frances Spivy-Weber Board Member Arthur G. Baggett, Jr. Board Member Tam M. Doduc NAY: Chairman Charles R. Hoppin ABSENT: None ABSTAIN; None 4'awtuv-,:�Yzrmo-d- Jean iq. "Townsend Clerk to the Board 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ Agreement No. 6574 State Water Resources Control'� hoard Linda S. Adams DIVISIOrI Of Water Quality Arnold Schwarzenegger Secretary for y Governor Environmental Protection 1001 1 Street - Sacramento, California 95814 - (916) 341-5455 Mailing Address: P.O. Box 100 - Sacramento, California - 95812-0100 Fax (916) 341-5463 - http://www.waterboards.ca.gov NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT FOR STORM WATER DISCHARGES ASSOCIATED WITH CONSTRUCTION AND LAND DISTURBANCE ACTIVITIES ORDER NO. 2010-0014-DWQ NPDES NO. CAS000002 Order No. 2009-0009-DWQ was adopted by the State Water September 2, 2009 Resources Control Board on: Order No. 2009-0009-DWQ became effective on: July 1, 2010 Order No. 2009-0009-DWQ shall expire on: September 2, 2014 This Order, which amends Order No. 2009-0009-DWQ, was adopted by the State Water Resources Control Board on: November 16, 2010 This Order shall become effective on: February 14, 2011 IT IS HEREBY ORDERED that this Order amends Order No. 2009-0009-DWQ. Additions to Order No. 2009-0009-DWQ are reflected in blue -underline text and deletions are reflected in fired -strikeout text. IT IS FURTHER ORDERED that staff are directed to prepare and post a conformed copy of Order No. 2009-0009-DWQ incorporating the revisions made by this Order. I, Jeanine Townsend, Clerk to the Board, do hereby certify that this Order with all attachments is a full, true, and correct copy of an Order adopted by the State Water Resources Control Board, on November 16, 2010. AYE: Chairman Charles R. Hoppin Vice Chair Frances Spivy-Weber Board Member Arthur G. Baggett, Jr. Board Member Tam M. Doduc NAY: None ABSENT: None ABSTAIN: None Jeani:l` Townsend Clerk to the Board Agreement No. 6574 csr�rowwrr Water Boards State Water Resources Control Board -u��W ,a� rrn 6awbun�a 4A',nro s�ww WuG'uoi rsur.z. �i,iun .�ren4x re. mv. wra�rM r,t��ti�ra� NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT FOR STORM WATER DISCHARGES ASSOCIATED WITH CONSTRUCTION AND LAND DISTURBANCE ACTIVITIES ORDER NO. 2012-0006-DWQ NPDES NO. CAS000002 Order No. 2009-0009-DWQ was adopted by the State Water Resources September 2, 2009 Control Board on: Order No. 2009-0009-DWQ became effective on: July 1, 2010 Order No. 2010-0014-DWQ became effective on: February 14, 2011 Order No. 2009-0009-DWQ as amended by 2010-0014-DWQ shall September 2, 2014 expire on: This Order, which amends Order No. 2009-0009-DWQ as amended by 2010-0014-DWQ, was adopted by the State Water Resources Control July 17, 2012 Board on: This Order No. 2012-0006-DWQ shall become effective on July 17, 2012 IT IS HEREBY ORDERED that this Order amends Order No. 2009-0009-DWQ. Additions to Order No. 2009-0009-DWQ are reflected in blue -underline text and deletions are reflected in red strikeout text. IT IS FURTHER ORDERED that staff are directed to prepare and post a conformed copy of Order No. 2009-000-DWQ incorporating the revisions made by this Order. I, Jeanine Townsend, Clerk to the Board, do hereby certify that this Order with all attachments is a full, true, and correct copy of an Order adopted by the State Water Resources Control Board, on July 17, 2012. AYE; Chairman Charles R. Hoppin Vice Chair Frances Spivy-Weber Board Member Tam M. Doduc Board Member Steven Moore Board Member Felicia Marcus NAY: None ABSENT: None ABSTAIN: None 61 "CrI16- Jeanin�Townsend Clerk to the Board Agreement No. 6574 TABLE OF CONTENTS 1. FINDINGS......................................................................................................................................I H. CONDITIONS FOR PERMIT COVERAGE............................................................................ 14 III. DISCHARGE PROHIBITIONS................................................................................................. 20 IV. SPECIAL PROVISIONS ................ ......... »........ .......... ......... ........ .............................. 22 V. EFFLUENT STANDARDS & RECEIVING WATER MONITORING ................................. 28 VI. RECEIVING WATER LIMITATIONS.................................................................................... 31 VII. TRAINING QUALIFICATIONS AND CERTIFICATION REQUIREMENTS ................... 32 VIII. RISK DETERMINATION.......................................................................................................... 33 IX. RISK LEVEL I REQUIREMENTS........................................................................................... 34 X. RISK LEVEL 2 REQUIREMENTS........................................................................................... 34 XI. RISK LEVEL 3 REQUIREMENTS........................................................................................... 34 XII. ACTIVE TREATMENT SYSTEMS(ATS)............................................................................... 34 XIII. POST -CONSTRUCTION STANDARDS.................................................................................. 35 XIV. SWPPP REQUIREMENTS........................................................................................................ 37 XV. REGIONAL WATER BOARD AUTHORITIES...................................................................... 38 XVI. ANNUAL REPORTING REQUIREMENTS._.... _......................._...................................... 39 LIST OF ATTACHMENTS Attachment A — Linear Underground/Overhead Requirements Attachment A.1 — LUP Type Determination Attachment A.2 — LUP Permit Registration Documents Attachment B — Permit Registration Documents Attachment C — Risk Level 1 Requirements Attachment D — Risk Level 2 Requirements Attachment E — Risk Level 3 Requirements Attachment F — Active Treatment System (ATS) Requirements LIST OF APPENDICES Appendix 1 — Risk Determination Worksheet Appendix 2 — Post -Construction Water Balance Performance Standard Appendix 2.1 — Post -Construction Water Balance Performance Standard Spreadsheet Appendix 3 — Bioassessment Monitoring Guidelines Appendix 4 — Adopted/Implemented Sediment TMDLs Appendix 5 — Glossary Appendix 6 — Acronyms Appendix 7 — State and Regional Water Resources Control Board Contacts 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ Agreement No. 6574 Order STATE WATER RESOURCES CONTROL BOARD ORDER NO. 2009-0009-DWQ [AS AMENDED BY ORDER NO. 2010-0014-DWQ] NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM GENERAL PERMIT NO. CAS000002 WASTE DISCHARGE REQUIREMENTS FOR DISCHARGES OF STORM WATER RUNOFF ASSOCIATED WITH CONSTRUCTION AND LAND DISTURBANCE ACTIVITIES I. FINDINGS A. General Findings The State Water Resources Control Board (State Water Board) finds that: The federal Clean Water Act (CWA) prohibits certain discharges of storm water containing pollutants except in compliance with a National Pollutant Discharge Elimination System (NPDES) permit (Title 33 United States Code (U.S.C.) §§ 1311 and 1342(p); also referred to as Clean Water Act (CWA) §§ 301 and 402(p)). The U.S. Environmental Protection Agency (U.S. EPA) promulgates federal regulations to implement the CWA's mandate to control pollutants in storm water runoff discharges. (Title 40 Code of Federal Regulations (C.F.R.) Parts 122, 123, and 124). The federal statutes and regulations require discharges to surface waters comprised of storm water associated with construction activity, including demolition, clearing, grading, and excavation, and other land disturbance activities (except operations that result in disturbance of less than one acre of total land area and which are not part of a larger common plan of development or sale), to obtain coverage under an NPDES permit. The NPDES permit must require implementation of Best Available Technology Economically Achievable (BAT) and Best Conventional Pollutant Control Technology (BCT) to reduce or eliminate pollutants in storm water runoff. The NPDES permit must also include additional requirements necessary to implement applicable water quality standards. 2. This General Permit authorizes discharges of storm water associated with construction activity so long as the dischargers comply with all requirements, provisions, limitations and prohibitions in the permit. In addition, this General Permit regulates the discharges of storm water associated with construction activities from all Linear 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 Order Underground/Overhead Projects resulting in the disturbance of greater than or equal to one acre (Attachment A). 3. This General Permit regulates discharges of pollutants in storm water associated with construction activity (storm water discharges) to waters of the United States from construction sites that disturb one or more acres of land surface, or that are part of a common plan of development or sale that disturbs more than one acre of land surface. 4. This General Permit does not preempt or supersede the authority of local storm water management agencies to prohibit, restrict, or control storm water discharges to municipal separate storm sewer systems or other watercourses within their jurisdictions. 5. This action to adopt a general NPDES permit is exempt from the provisions of Chapter 3 of the California Environmental Quality Act (CEQA) (Public Resources Code Section 21100, et seq.), pursuant to Section 13389 of the California Water Code. 6. Pursuant to 40 C.F.R. § 131.12 and State Water Board Resolution No. 68-16,1 which incorporates the requirements of § 1.31.12 where applicable, the State Water Board finds that discharges in compliance with this General Permit will not result in the lowering of water quality standards, and are therefore consistent with those provisions. Compliance with this General Permit will result in improvements in water quality. 7. This General Permit serves as an NPDES permit in compliance with CWA § 402 and will take effect on July 1, 2010 by the State Water Board provided the Regional Administrator of the U.S. EPA has no objection. If the U.S. EPA Regional Administrator objects to its issuance, the General Permit will not become effective until such objection is withdrawn. 8. Following adoption and upon the effective date of this General Permit, the Regional Water Quality Control Boards (Regional Water Boards) shall enforce the provisions herein. 9. Regional Water Boards establish water quality standards in Basin Plans. The State Water Board establishes water quality standards in various statewide plans, including the California Ocean Plan. U.S. EPA establishes water quality standards in the National Toxic Rule (NTR) and the California Toxic Rule (CTR). Resolution No. 68-16 generally requires that existing water quality be maintained unless degradation is justified based on specific findings. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 Order 10. This General Permit does not authorize discharges of fill or dredged material regulated by the U.S. Army Corps of Engineers under CWA § 404 and does not constitute a waiver of water quality certification under CWA § 401. 11. The primary storm water pollutant at construction sites is excess sediment. Excess sediment can cloud the water, which reduces the amount of sunlight reaching aquatic plants, clog fish gills, smother aquatic habitat and spawning areas, and impede navigation in our waterways. Sediment also transports other pollutants such as nutrients, metals, and oils and greases. 12. Construction activities can impact a construction site's runoff sediment supply and transport characteristics. These modifications, which can occur both during and after the construction phase, are a significant cause of degradation of the beneficial uses established for water bodies in California. Dischargers can avoid these effects through better construction site design and activity practices. 13. This General Permit recognizes four distinct phases of construction activities. The phases are Grading and Land Development Phase, Streets and Utilities Phase, Vertical Construction Phase, and Final Landscaping and Site Stabilization Phase. Each phase has activities that can result in different water quality effects from different water quality pollutants. This General Permit also recognizes inactive construction as a category of construction site type. 14. Compliance with any specific limits or requirements contained in this General Permit does not constitute compliance with any other applicable requirements. 15. Following public notice in accordance with,State and Federal laws and regulations, the State Water Board heard and considered all comments and testimony in a public hearing on 06/03/2009. The State Water Board has prepared written responses to all significant comments. 16. Construction activities obtaining coverage under the General Permit may have multiple discharges subject to requirements that are specific to general, linear, and/or active treatment system discharge types. 17. The State Water Board may reopen the permit if the U.S. EPA adopts a final effluent limitation guideline for construction activities. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 Order B. Activities Covered Under the General Permit 18. Any construction or demolition activity, including, but not limited to, clearing, grading, grubbing, or excavation, or any other activity that results in a land disturbance of equal to or greater than one acre. 19. Construction activity that results in land surface disturbances of less than one acre if the construction activity is part of a larger common plan of development or the sale of one or more acres of disturbed land surface. 20. Construction activity related to residential, commercial, or industrial development on lands currently used for agriculture including, but not limited to, the construction of buildings related to agriculture that are considered industrial pursuant to U.S. EPA regulations, such as dairy barns or food processing facilities. 21. Construction activity associated with Linear Underground/Overhead Utility Projects (LUPs) including, but not limited to, those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment and associated ancillary facilities) and include, but are not limited to, underground utility mark -out, potholing, concrete and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/tower pad and cable/wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/or pavement repair or replacement, and stockpile/borrow locations. 22. Discharges of sediment from construction activities associated with oil and gas exploration, production, processing, or treatment operations or transmission facilities.2 23. Storm water discharges from dredge spoil placement that occur outside of U.S. Army Corps of Engineers jurisdiction (upland sites) and that disturb one or more acres of land surface from construction activity are covered by this General Permit. Construction sites that intend to disturb one or more acres of land within the jurisdictional boundaries of 2 Pursuant to the Ninth Circuit Court of Appeals' decision in NRDC v. EPA (9th Cir. 2008) 526 F.3d 591, and subsequent denial of the U.S. EPA's petition for reconsideration in November 2008, oil and gas construction activities discharging storm water contaminated only with sediment are no longer exempt from the NPDES program. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 4 Agreement No. 6574 Order a CWA § 404 permit should contact the appropriate Regional Water Board to determine whether this permit applies to the site. C. Activities Not Covered Under the General Permit 24. Routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. 25. Disturbances to land surfaces solely related to agricultural operations such as disking, harrowing, terracing and leveling, and soil preparation. 26. Discharges of storm water from areas on tribal lands; construction on tribal lands is regulated by a federal permit. 27. Construction activity and land disturbance involving discharges of storm water within the Lake Tahoe Hydrologic Unit. The Lahontan Regional Water Board has adopted its own permit to regulate storm water discharges from construction activity in the Lake Tahoe Hydrologic Unit (Regional Water Board 6SLT). Owners of construction sites in this watershed must apply for the Lahontan Regional Water Board permit rather than the statewide Construction General Permit. 28. Construction activity that disturbs less than one acre of land surface, and that is not part of a larger common plan of development or the sale of one or more acres of disturbed land surface. 29. Construction activity covered by an individual NPDES Permit for storm water discharges. 30. Discharges from small (1 to 5 acre) construction activities with an approved Rainfall Erosivity Waiver authorized by U.S. EPA Phase II regulations certifying to the State Board that small construction activity will occur only when the Rainfall Erosivity Factor is less than 5 ("R" in the Revised Universal Soil Loss Equation). 31. Landfill construction activity that is subject to the Industrial General Permit. 32. Construction activity that discharges to Combined Sewer Systems. 33. Conveyances that discharge storm water runoff combined with municipal sewage. 34. Discharges of storm water identified in CWA § 402(1)(2), 33 U.S.C. § 1342(l)(2). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 5 Agreement No. 6574 Order 35. Discharges occurring in basins that are not tributary or hydrologically connected to waters of the United States (for more information contact your Regional Water Board). D. Obtaining and Modifying General Permit Coverage 36. This General Permit requires all dischargers to electronically file all Permit Registration Documents (PRDs), Notices of Termination (NOT), changes of information, annual reporting, and other compliance documents required by this General Permit through the State Water Board's Storm water Multi -Application and Report Tracking System (SMARTS) website. 37. Any information provided to the Regional Water Board shall comply with the Homeland Security Act and any other federal law that concerns security in the United States; any information that does not comply should not be submitted. 38. This General Permit grants an exception from the Risk Determination requirements for existing sites covered under Water Quality Orders No. 99-08-DWQ, and No. 2003-0007-DWQ. For certain sites, adding additional requirements may not be cost effective. Construction sites covered under Water Quality Order No. 99-08-DWQ shall obtain permit coverage at the Risk Level 1. LUPs covered under Water Quality Order No. 2003-0007-DWQ shall obtain permit coverage as a Type 1 LUP. The Regional Water Boards have the authority to require Risk Determination to be performed on sites currently covered under Water Quality Orders No. 99-08-DWQ and No. 2003-0007-DWQ where they deem it necessary. The State Water Board finds that there are two circumstances when it may be appropriate for the Regional Water Boards to require a discharger that had filed an NOI under State Water Board Order No. 99-08-DWQ to recalculate the site's risk level. These circumstances are: (1) when the discharger has a demonstrated history of noncompliance with State Water Board Order No. 99-08- DWQ or; (2) when the discharger's site poses a significant risk of causing or contributing to an exceedance of a water quality standard without the implementation of the additional Risk Level 2 or 3 requirements. E. Prohibitions 39.All discharges are prohibited except for the storm water and non -storm water discharges specifically authorized by this General Permit or another NPDES permit. Non -storm water discharges include a wide variety of sources, including improper dumping, spills, or leakage from storage tanks or transfer areas. Non -storm water discharges may 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 6 Agreement No. 6574 Order contribute significant pollutant loads to receiving waters. Measures to control spills, leakage, and dumping, and to prevent illicit connections during construction must be addressed through structural as well as non-structural Best Management Practices (BM Ps)3. The State Water Board recognizes, however, that certain non -storm water discharges may be necessary for the completion of construction. 40. This General Permit prohibits all discharges which contain a hazardous substance in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. 41.This General Permit incorporates discharge prohibitions contained in water quality control plans, as implemented by the State Water Board and the nine Regional Water Boards. 42. Pursuant to the Ocean Plan, discharges to Areas of Special Biological Significance (ASBS) are prohibited unless covered by an exception that the State Water Board has approved. 43. This General Permit prohibits the discharge of any debris4 from construction sites. Plastic and other trash materials can cause negative impacts to receiving water beneficial uses. The State Water Board encourages the use of more environmentally safe, biodegradable materials on construction sites to minimize the potential risk to water quality. F. Training 44. In order to improve compliance with and to maintain consistent enforcement of this General Permit, all dischargers are required to appoint two positions - the Qualified SWPPP Developer (QSD) and the Qualified SWPPP Practitioner (QSP) - who must obtain appropriate training. Together with the key stakeholders, the State and Regional Water Boards are leading the development of this curriculum through a collaborative organization called The Construction General Permit (CGP) Training Team. 45. The Professional Engineers Act (Bus. & Prof. Code section 6700, et seq.) requires that all engineering work must be performed by a California licensed engineer. 3 BMPs are scheduling of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the discharge of pollutants to waters of the United States. BMPs also include treatment requirements, operating procedures, and practice to control site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. 4 Litter, rubble, discarded refuse, and remains of destroyed inorganic anthropogenic waste. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 7 Agreement No. 6574 Order G. Determining and Reducing Risk 46. The risk of accelerated erosion and sedimentation from wind and water depends on a number of factors, including proximity to receiving water bodies, climate, topography, and soil type. 47. This General Permit requires dischargers to assess the risk level of a site based on both sediment transport and receiving water risk. This General Permit contains requirements for Risk Levels 1, 2 and 3, and LUP Risk Type 1, 2, and 3 (Attachment A). Risk levels are established by determining two factors: first, calculating the site's sediment risk; and second, receiving water risk during periods of soil exposure (i.e. grading and site stabilization). Both factors are used to determine the site -specific Risk Level(s). LUPs can be determined to be Type 1 based on the flowchart in Attachment A. 1. 48.Although this General Permit does not mandate specific setback distances, dischargers are encouraged to set back their construction activities from streams and wetlands whenever feasible to reduce the risk of impacting water quality (e.g., natural stream stability and habitat function). Because there is a reduced risk to receiving waters when setbacks are used, this General Permit gives credit to setbacks in the risk determination and post -construction storm water performance standards. The risk calculation and runoff reduction mechanisms in this General Permit are expected to facilitate compliance with any Regional Water Board and local agency setback requirements, and to encourage voluntary setbacks wherever practicable. 49. Rain events can occur at any time of the year in California. Therefore, a Rain Event Action Plan (REAP) is necessary for Risk Level 2 and 3 traditional construction projects (LUPs exempt) to ensure that active construction sites have adequate erosion and sediment controls implemented prior to the onset of a storm event, even if construction is planned only during the dry season. 50. Soil particles smaller than 0.02 millimeters (mm) (i.e., finer than medium silt) do not settle easily using conventional measures for sediment control (i.e., sediment basins). Given their long settling time, dislodging these soils results in a significant risk that fine particles will be released into surface waters and cause unacceptable downstream impacts. If operated correctly, an Active Treatment System (ATS) can prevent or reduce the release of fine particles from construction sites. 5 An ATS is a treatment system that employs chemical coagulation, chemical flocculation, or electro coagulation in order to reduce turbidity caused by fine suspended sediment. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 8 Agreement No. 6574 Order Use of an ATS can effectively reduce a site's risk of impacting receiving waters. 51. Dischargers located in a watershed area where a Total Maximum Daily Load (TMDL) has been adopted or approved by the Regional Water Board or U.S. EPA may be required by a separate Regional Water Board action to implement additional BMPs, conduct additional monitoring activities, and/or comply with an applicable waste load allocation and implementation schedule. Such dischargers may also be required to obtain an individual Regional Water Board permit specific to the area. H. Effluent Standards 52. The State Water Board convened a blue ribbon panel of storm water experts that submitted a report entitled, "The Feasibility of Numeric Effluent Limits Applicable to Discharges of Storm Water Associated with Municipal, Industrial and Construction Activities," dated June 19, 2006. The panel concluded that numeric limits or action levels are technically feasible to control construction storm water discharges, provided that certain conditions are considered. The panel also concluded that numeric effluent limitations (NELs) are feasible for discharges from construction sites that utilize an ATS. The State Water Board has incorporated the expert panel's suggestions into this General Permit, which includes numeric action levels (NALs) for pH and turbidity, and special numeric limits for ATS discharges. Determining Compliance with Numeric Limitations 53.This General Permit sets a pH NAL of 6.5 to 8.5, and a turbidity NAL of 250 NTU. The purpose of the NAL and its associated monitoring requirement is to provide operational information regarding the performance of the measures used at the site to minimize the discharge of pollutants and to protect beneficial uses and receiving waters from the adverse effects of construction -related storm water discharges. An exceedance of a NAL does not constitute a violation of this General Permit. 54. This General Permit requires dischargers with NAL exceedances to immediately implement additional BMPs and revise their Storm Water Pollution Prevention Plans (SWPPPs) accordingly to either prevent pollutants and authorized non -storm water discharges from contaminating storm water, or to substantially reduce the pollutants to levels consistently below the NALs. NAL exceedances are reported in the State Water Boards SMARTS system, and the discharger is 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 9 Agreement No. 6574 Order required to provide an NAL Exceedance Report when requested by a Regional Water Board. I. Receiving Water Limitations 55. This General Permit requires all enrolled dischargers to determine the receiving waters potentially affected by their discharges and to comply with all applicable water quality standards, including any more stringent standards applicable to a water body. J. Sampling, Monitoring, Reporting and Record Keeping 56. Visual monitoring of storm water and non -storm water discharges is required for all sites subject to this General Permit. 57. Records of all visual monitoring inspections are required to remain on - site during the construction period and for a minimum of three years. 58. For all Risk Level 3/LUP Type 3 and Risk Level 2/LUP Type 2 sites, this General Permit requires effluent monitoring for pH and turbidity. Sampling, analysis and monitoring requirements for effluent monitoring for pH and turbidity are contained in this General Permit. 59. Risk Level 3 and LUP Type 3 sites with effluent that exceeds the Receiving Water Monitoring Triggers contained in this General Permit and with direct discharges to receiving water are required to conduct receiving water monitoring. An exceedance of a Receiving Water Monitoring Trigger does not constitute a violation of this General Permit. 60. This General Permit establishes a 5 year, 24 hour (expressed in inches of rainfall) as an exemptions to the receiving water monitoring requirements for Risk Level 3 and LUP Type 3 dischargers. 61. If run-on is caused by a forest fire or any other natural disaster, then receiving water monitoring triggers do not apply. 62. For Risk Level 3 and LUP Type 3 sites larger than 30 acres and with direct discharges to receiving waters, this General Permit requires bioassessment sampling before and after site completion to determine if significant degradation to the receiving water's biota has occurred. Bioassessment sampling guidelines are contained in this General Permit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 10 Agreement No. 6574 Order 63. A summary and evaluation of the sampling and analysis results will be submitted in the Annual Reports. 64. This General Permit contains sampling, analysis and monitoring requirements for non -visible pollutants at all sites subject to this General Permit. 65. Compliance with the General Permit relies upon dischargers to electronically self -report any discharge violations and to comply with any Regional Water Board enforcement actions. 66. This General Permit requires that all dischargers maintain a paper or electronic copy of all required records for three years from the date generated or date submitted, whichever is last. These records must be available at the construction site until construction is completed. For LUPs, these documents may be retained in a crew member's vehicle and made available upon request. K. Active Treatment System (ATS) Requirements 67.Active treatment systems add chemicals to facilitate flocculation, coagulation and filtration of suspended sediment particles. The uncontrolled release of these chemicals to the environment can negatively affect the beneficial uses of receiving waters and/or degrade water quality (e.g., acute and chronic toxicity). Additionally, the batch storage and treatment of storm water through an ATS' can potentially cause physical impacts on receiving waters if storage volume is inadequate or due to sudden releases of the ATS batches and improperly designed outfalls. 68. If designed, operated and maintained properly an ATS can achieve very high removal rates of suspended sediment (measured as turbidity), albeit at sometimes significantly higher costs than traditional erosion/sediment control practices. As a result, this General Permit establishes NELs consistent with the expected level of typical ATS performance. 69. This General Permit requires discharges of storm water associated with construction activity that undergo active treatment to comply with special operational and effluent limitations to ensure that these discharges do not adversely affect the beneficial uses of the receiving waters or cause degradation of their water quality. 70. For ATS discharges, this General Permit establishes technology -based NELs for turbidity. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 11 Agreement No. 6574 Order 71. This General Permit establishes a 10 year, 24 hour (expressed in inches of rainfall) Compliance Storm Event exemption from the technology -based numeric effluent limitations for ATS discharges. Exceedances of the ATS turbidity NEL constitutes a violation of this General Permit. L. Post -Construction Requirements 72. This General Permit includes performance standards for post - construction that are consistent with State Water Board Resolution No. 2005-0006, "Resolution Adopting the Concept of Sustainability as a Core Value for State Water Board Programs and Directing Its Incorporation," and 2008-0030, "Requiring Sustainable Water Resources Management." The requirement for all construction sites to match pre -project hydrology will help ensure that the physical and biological integrity of aquatic ecosystems are sustained. This "runoff reduction" approach is analogous in principle to Low Impact Development (LID) and will serve to protect related watersheds and waterbodies from both hydrologic -based and pollution impacts associated with the post -construction landscape. 73. LUP projects are not subject to post -construction requirements due to the nature of their construction to return project sites to pre - construction conditions. M. Storm Water Pollution Prevention Plan Requirements 74. This General Permit requires the development of a site -specific SWPPP. The SWPPP must include the information needed to demonstrate compliance with all requirements of this General Permit, and must be kept on the construction site and be available for review. The discharger shall ensure that a QSD develops the SWPPP. 75. To ensure proper site oversight, this General Permit requires a Qualified SWPPP Practitioner to oversee implementation of the BMPs required to comply with this General Permit. N. Regional Water Board Authorities 76. Regional Water Boards are responsible for implementation and enforcement of this General Permit. A general approach to permitting is not always suitable for every construction site and environmental circumstances. Therefore, this General Permit recognizes that Regional Water Boards must have some flexibility and authority to alter, approve, exempt, or rescind permit authority granted under this 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 12 Agreement No. 6574 Order General Permit in order to protect the beneficial uses of our receiving waters and prevent degradation of water quality. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 13 Agreement No. 6574 Order IT IS HEREBY ORDERED that all dischargers subject to this General Permit shall comply with the following conditions and requirements (including all conditions and requirements as set forth in Attachments A, B, C, D, E and F)6. II. CONDITIONS FOR PERMIT COVERAGE A. Linear Underground/Overhead Projects (LUPs) Linear Underground/Overhead Projects (LUPs) include, but are not limited to, any conveyance, pipe, or pipeline for the transportation of any gaseous, liquid (including water and wastewater for domestic municipal services), liquescent, or slurry substance; any cable line or wire for the transmission of electrical energy; any cable line or wire for communications (e.g. telephone, telegraph, radio or television messages); and associated ancillary facilities. Construction activities associated with LUPs include, but are not limited to, (a) those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment, and associated ancillary facilities); and include, but are not limited to, (b) underground utility mark -out, potholing, concrete and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/tower pad and cable/wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/ or pavement repair or replacement, and stockpile/borrow locations. 2. The Legally Responsible Person is responsible for obtaining coverage under the General Permit where the construction of pipelines, utility lines, fiber-optic cables, or other linear underground/overhead projects will occur across several properties unless the LUP construction activities are covered under another construction storm water permit. 3. Only LUPs shall comply with the conditions and requirements in Attachment A, A.1 & A.2 of this Order. The balance of this Order is not applicable to LUPs except as indicated in Attachment A. 6 These attachments are part of the General Permit itself and are not separate documents that are capable of being updated independently by the State Water Board. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 14 Agreement No. 6574 Order B. Obtaining Permit Coverage Traditional Construction Sites 1. The Legally Responsible Person (LRP) (see Special Provisions, Electronic Signature and Certification Requirements, Section IV.1.1) must obtain coverage under this General Permit. 2. To obtain coverage, the LRP must electronically file Permit Registration Documents (PRDs) prior to the commencement of construction activity. Failure to obtain coverage under this General Permit for storm water discharges to waters of the United States is a violation of the CWA and the California Water Code. 3. PRDs shall consist of: a. Notice of Intent (NOI) b. Risk Assessment (Section Vill) c. Site Map d. Storm Water Pollution Prevention Plan (Section XIV) e. Annual Fee f. Signed Certification Statement Any information provided to the Regional Water Board shall comply with the Homeland Security Act and any other federal law that concerns security in the United States; any information that does not comply should not be submitted. Attachment B contains additional PRD information. Dischargers must electronically file the PRDs, and mail the appropriate annual fee to the State Water Board. 4. This permit is effective on July 1, 2010. a. Dischargers Obtaining Coverage On or After July 1, 2010: All dischargers requiring coverage on or after July 1, 2010, shall electronically file their PRDs prior to the commencement of construction activities, and mail the appropriate annual fee no later than seven days prior to the commencement of construction activities. Permit coverage shall not commence until the PRDs and the annual fee are received by the State Water Board, and a WDID number is assigned and sent by SMARTS. b. Dischargers Covered Under 99-08-DWQ and 2003-0007-DWQ: Existing dischargers subject to State Water Board Order No. 99-08- DWQ (existing dischargers) will continue coverage under 99-08- DWQ until July 1, 2010. After July 1, 2010, all NOls subject to State Water Board Order No. 99-08-DWQ will be terminated. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 15 Agreement No. 6574 Order Existing dischargers shall electronically file their PRDs no later than July 1, 2010. If an existing discharger's site acreage subject to the annual fee has changed, it shall mail a revised annual fee no less than seven days after receiving the revised annual fee notification, or else lose permit coverage. All existing dischargers shall be exempt from the risk determination requirements in Section VIII of this General Permit until two years after permit adoption. All existing dischargers are therefore subject to Risk Level 1 requirements regardless of their site's sediment and receiving water risks. However, a Regional Board retains the authority to require an existing discharger to comply with the Section Vlll risk determination requirements. 5. The discharger is only considered covered by this General Permit upon receipt of a Waste Discharger Identification (WDID) number assigned and sent by the State Water Board Storm water Multi -Application and Report Tracking System (SMARTS). In order to demonstrate compliance with this General Permit, the discharger must obtain a WDID number and must present documentation of a valid WDID upon demand. 6. During the period this permit is subject to review by the U.S. EPA, the prior permit (State Water Board Order No. 99-08-DWQ) remains in effect. Existing dischargers under the prior permit will continue to have coverage under State Water Board Order No. 99-08-DWQ until this General Permit takes effect on July 1, 2010. Dischargers who complete their projects and electronically file an NOT prior to July 1, 2010, are not required to obtain coverage under this General Permit. 7. Small Construction Rainfall Erosivity Waiver EPA's Small Construction Erosivity Waiver applies to sites between one and five acres demonstrating that there are no adverse water quality impacts. Dischargers eligible for a Rainfall Erosivity Waiver based on low erosivity potential shall complete the electronic Notice of Intent (NOI) and Sediment Risk form through the State Water Board's SMARTS system, certifying that the construction activity will take place during a period when the value of the rainfall erosivity factor is less than five. Where the LRP changes or another LRP is added during construction, the new LRP must also submit a waiver certification through the SMARTS system. If a small construction site continues beyond the projected completion date given on the waiver certification, the LRP shall recalculate the 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 16 Agreement No. 6574 Order rainfall erosivity factor for the new project duration and submit this information through the SMARTS system. If the new R factor is below five (5), the discharger shall update through SMARTS all applicable information on the waiver certification and retain a copy of the revised waiver onsite. The LRP shall submit the new waiver certification 30 days prior to the projected completion date listed on the original waiver form to assure exemption from permitting requirements is uninterrupted. If the new R factor is five (5) or above, the LRP shall be required to apply for coverage under this Order. 8. In the case of a public emergency that requires immediate construction activities, a discharger shall submit a brief description of the emergency construction activity within five days of the onset of construction, and then shall submit all PRDs within thirty days. C. Revising Permit Coverage for Change of Acreage or New Ownership The discharger may reduce or increase the total acreage covered under this General Permit when a portion of the site is complete and/or conditions for termination of coverage have been met (See Section II.D Conditions for Termination of Coverage); when ownership of a portion of the site is sold to a different entity; or when new acreage, subject to this General Permit, is added to the site. 2. Within 30 days of a reduction or increase in total disturbed acreage, the discharger shall electronically file revisions to the PRDs that include: a. A revised NOI indicating the new project size; b. A revised site map showing the acreage of the site completed, acreage currently under construction, acreage sold/transferred or added, and acreage currently stabilized in accordance with the Conditions for Termination of Coverage in Section II.D below. c. SWPPP revisions, as appropriate; and d. Certification that any new landowners have been notified of applicable requirements to obtain General Permit coverage. The certification shall include the name, address, telephone number, and e-mail address of the new landowner. e. If the project acreage has increased, dischargers shall mail payment of revised annual fees within 14 days of receiving the revised annual fee notification. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 17 Agreement No. 6574 Order 3. The discharger shall continue coverage under the General Permit for any parcel that has not achieved "Final Stabilization" as defined in Section II.D. 4. When an LRP with active General Permit coverage transfers its LRP status to another person or entity that qualifies as an LRP, the existing LRP shall inform the new LRP of the General Permit's requirements. In order for the new LRP to continue the construction activity on its parcel of property, the new LRP, or the new LRP's approved signatory, must submit PRDs in accordance with this General Permit's requirements. D. Conditions for Termination of Coverage 1. Within 90 days of when construction is complete or ownership has been transferred, the discharger shall electronically file a Notice of Termination (NOT), a final site map, and photos through the State Water Boards SMARTS system. Filing a NOT certifies that all General Permit requirements have been met. The Regional Water Board will consider a construction site complete only when all portions of the site have been transferred to a new owner, or all of the following conditions have been met: a. For purposes of "final stabilization," the site will not pose any additional sediment discharge risk than it did prior to the commencement of construction activity; b. There is no potential for construction -related storm water pollutants to be discharged into site runoff; c. Final stabilization has been reached; d. Construction materials and wastes have been disposed of properly; e. Compliance with the Post -Construction Standards in Section XIII of this General Permit has been demonstrated; Post -construction storm water management measures have been installed and a long-term maintenance plan? has been established; and g. All construction -related equipment, materials and any temporary BMPs no longer needed are removed from the site. For the purposes of this requirement a long-term maintenance plan will be designed for a minimum of five years, and will describe the procedures to ensure that the post -construction storm water management measures are adequately maintained. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 18 Agreement No. 6574 Order 2. The discharger shall certify that final stabilization conditions are satisfied in their NOT. Failure to certify shall result in continuation of permit coverage and annual billing. 3. The NOT must demonstrate through photos, RUSLE or RUSLE2, or results of testing and analysis that the site meets all of the conditions above (Section II.D.1) and the final stabilization condition (Section II.D.1.a) is attained by one of the following methods: a. 70% final cover method," no computational proof required �� b. "RUSLE or RUSLE2 method," computational proof required OR: c. "Custom method", the discharger shall demonstrate in some other manner than a or b, above, that the site complies with the "final stabilization" requirement in Section II.D.1.a. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 19 Agreement No. 6574 Order III. DISCHARGE PROHIBITIONS A. Dischargers shall not violate any discharge prohibitions contained in applicable Basin Plans or statewide water quality control plans. Waste discharges to Areas of Special Biological Significance (ASBS) are prohibited by the California Ocean Plan, unless granted an exception issued by the State Water Board. B. All discharges are prohibited except for the storm water and non -storm water discharges specifically authorized by this General Permit or another NPDES permit. C. Authorized non -storm water discharges may include those from de - chlorinated potable water sources such as: fire hydrant flushing, irrigation of vegetative erosion control measures, pipe flushing and testing, water to control dust, uncontaminated ground water from dewatering, and other discharges not subject to a separate general NPDES permit adopted by a Regional Water Board. The discharge of non -storm water is authorized under the following conditions: 1. The discharge does not cause or contribute to a violation of any water quality standard; 2. The discharge does not violate any other provision of this General Permit; 3. The discharge is not prohibited by the applicable Basin Plan; 4. The discharger has included and implemented specific BMPs required by this General Permit to prevent or reduce the contact of the non - storm water discharge with construction materials or equipment. 5. The discharge does not contain toxic constituents in toxic amounts or (other) significant quantities of pollutants; 6. The discharge is monitored and meets the applicable NALs; and 7. The discharger reports the sampling information in the Annual Report. If any of the above conditions are not satisfied, the discharge is not authorized by this General Permit. The discharger shall notify the Regional Water Board of any anticipated non -storm water discharges not already authorized by this General Permit or another NPDES permit, to determine whether a separate NPDES permit is necessary. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 20 Agreement No. 6574 Order D. Debris resulting from construction activities are prohibited from being discharged from construction sites. E. When soil contamination is found or suspected and a responsible party is not identified, or the responsible party fails to promptly take the appropriate action, the discharger shall have those soils sampled and tested to ensure proper handling and public safety measures are implemented. The discharger shall notify the appropriate local, State, and federal agency(ies) when contaminated soil is found at a construction site, and will notify the appropriate Regional Water Board. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 21 Agreement No. 6574 Order IV.SPECIAL PROVISIONS A. Duty to Comply 1. The discharger shall comply with all of the conditions of this General Permit. Any permit noncompliance constitutes a violation of the Clean Water Act (CWA) and the Porter -Cologne Water Quality Control Act and is grounds for enforcement action and/or removal from General Permit coverage. 2. The discharger shall comply with effluent standards or prohibitions established under Section 307(a) of the CWA for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions, even if this General Permit has not yet been modified to incorporate the requirement. B. General Permit Actions 1. This General Permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the discharger for a General Permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not annul any General Permit condition. 2. If any toxic effluent standard or prohibition (including any schedule of compliance specified in such effluent standard or prohibition) is promulgated under Section 307(a) of the CWA for a toxic pollutant which is present in the discharge and that standard or prohibition is more stringent than any limitation on the pollutant in this General Permit, this General Permit shall be modified or revoked and reissued to conform to the toxic effluent standard or prohibition and the dischargers so notified. C. Need to Halt or Reduce Activity Not a Defense It shall not be a defense for a discharger in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this General Permit. D. Duty to Mitigate The discharger shall take all responsible steps to minimize or prevent any discharge in violation of this General Permit, which has a reasonable likelihood of adversely affecting human health or the environment. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 22 Agreement No. 6574 Order E. Proper Operation and Maintenance The discharger shall at all times properly operate and maintain any facilities and systems of treatment and control (and related appurtenances) which are installed or used by the discharger to achieve compliance with the conditions of this General Permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. Proper operation and maintenance may require the operation of backup or auxiliary facilities or similar systems installed by a discharger when necessary to achieve compliance with the conditions of this General Permit. F. Property Rights This General Permit does not convey any property rights of any sort or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor does it authorize any infringement of Federal, State, or local laws or regulations. G. Duty to Maintain Records and Provide Information 1. The discharger shall maintain a paper or electronic copy of all required records, including a copy of this General Permit, for three years from the date generated or date submitted, whichever is last. These records shall be available at the construction site until construction is completed. 2. The discharger shall furnish the Regional Water Board, State Water Board, or U.S. EPA, within a reasonable time, any requested information to determine compliance with this General Permit. The discharger shall also furnish, upon request, copies of records that are required to be kept by this General Permit. H. Inspection and Entry The discharger shall allow the Regional Water Board, State Water Board, U.S. EPA, and/or, in the case of construction sites which discharge through a municipal separate storm sewer, an authorized representative of the municipal operator of the separate storm sewer system receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: 1. Enter upon the discharger's premises at reasonable times where a regulated construction activity is being conducted or where records must be kept under the conditions of this General Permit; 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 23 Agreement No. 6574 Order 2. Access and copy at reasonable times any records that must be kept under the conditions of this General Permit; 3. Inspect at reasonable times the complete construction site, including any off -site staging areas or material storage areas, and the erosion/sediment controls; and 4. Sample or monitor at reasonable times for the purpose of ensuring General Permit compliance. I. Electronic Signature and Certification Requirements All Permit Registration Documents (PRDs) and Notices of Termination (NOTs) shall be electronically signed, certified, and submitted via SMARTS to the State Water Board. Either the Legally Responsible Person (LRP), as defined in Appendix 5 — Glossary, or a person legally authorized to sign and certify PRDs and NOTs on behalf of the LRP (the LRP's Approved Signatory, as defined in Appendix 5 - Glossary) must submit all information electronically via SMARTS. 2. Changes to Authorization. If an Approved Signatory's authorization is no longer accurate, a new authorization satisfying the requirements of paragraph (a) of this section must be submitted via SMARTS prior to or together with any reports, information or applications to be signed by an Approved Signatory. 3. All Annual Reports, or other information required by the General Permit (other than PRDs and NOTs) or requested by the Regional Water Board, State Water Board, U.S. EPA, or local storm water management agency shall be certified and submitted by the LRP or the LRP's Approved Signatory. J. Certification Any person signing documents under Section IV.I above, shall make the following certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 24 Agreement No. 6574 Order K. Anticipated Noncompliance The discharger shall give advance notice to the Regional Water Board and local storm water management agency of any planned changes in the construction activity, which may result in noncompliance with General Permit requirements. L. Bypass Bypass$ is prohibited. The Regional Water Board may take enforcement action against the discharger for bypass unless: 1. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;9 2. There were no feasible alternatives to bypass, such as the use of auxiliary treatment facilities, retention of untreated waste, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that could occur during normal periods of equipment downtime or preventative maintenance; 3. The discharger submitted a notice at least ten days in advance of the need for a bypass to the Regional Water Board; or 4. The discharger may allow a bypass to occur that does not cause effluent limitations to be exceeded, but only if it is for essential maintenance to assure efficient operation. In such a case, the above bypass conditions are not applicable. The discharger shall submit notice of an unanticipated bypass as required. M. Upset 1. A discharger that wishes to establish the affirmative defense of an upsett0 in an action brought for noncompliance shall demonstrate, 9 The intentional diversion of waste streams from any portion of a treatment facility 9 Severe property damage mesons substantial physical damage to property„ damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. 10 An exceptional incident in which there is unintentional and temporary noncompliance the technology based numeric effluent limitations because of factors beyond the reasonable control of the discharger. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 25 Agreement No. 6574 Order through properly signed, contemporaneous operating logs, or other relevant evidence that: a. An upset occurred and that the discharger can identify the cause(s) of the upset b. The treatment facility was being properly operated by the time of the upset c. The discharger submitted notice of the upset as required; and d. The discharger complied with any remedial measures required 2. No determination made before an action of noncompliance occurs, such as during administrative review of claims that noncompliance was caused by an upset, is final administrative action subject to judicial review. 3. In any enforcement proceeding, the discharger seeking to establish the occurrence of an upset has the burden of proof N. Penalties for Falsification of Reports Section 309(c)(4) of the CWA provides that any person who knowingly makes any false material statement, representation, or certification in any record or other document submitted or required to be maintained under this General Permit, including reports of compliance or noncompliance shall upon conviction, be punished by a fine of not more than $10,000 or by imprisonment for not more than two years or by both. O. Oil and Hazardous Substance Liability Nothing in this General Permit shall be construed to preclude the institution of any legal action or relieve the discharger from any responsibilities, liabilities, or penalties to which the discharger is or may be subject to under Section 311 of the CWA. P. Severability The provisions of this General Permit are severable; and, if any provision of this General Permit or the application of any provision of this General Permit to any circumstance is held invalid, the application of such provision to other circumstances and the remainder of this General Permit shall not be affected thereby. Q. Reopener Clause 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 26 Agreement No. 6574 Order This General Permit may be modified, revoked and reissued, or terminated for cause due to promulgation of amended regulations, receipt of U.S. EPA guidance concerning regulated activities, judicial decision, or in accordance with 40 Code of Federal Regulations (CFR) 122.62, 122.63, 122.64, and 124.5. R. Penalties for Violations of Permit Conditions Section 309 of the CWA provides significant penalties for any person who violates a permit condition implementing Sections 301, 302, 306, 307, 308, 318, or 405 of the CWA or any permit condition or limitation implementing any such section in a permit issued under Section 402. Any person who violates any permit condition of this General Permit is subject to a civil penalty not to exceed $37,50011 per calendar day of such violation, as well as any other appropriate sanction provided by Section 309 of the CWA. 2. The Porter -Cologne Water Quality Control Act also provides for civil and criminal penalties, which in some cases are greater than those under the CWA. S. Transfers This General Permit is not transferable. T. Continuation of Expired Permit This General Permit continues in force and effect until a new General Permit is issued or the SWRCB rescinds this General Permit. Only those dischargers authorized to discharge under the expiring General Permit are covered by the continued General Permit. 11 May be further adjusted in accordance with the Federal Civil Penalties Inflation Adjustment Act. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 27 Agreement No. 6574 Order V. EFFLUENT STANDARDS & RECEIVING WATER MONITORING A. Narrative Effluent Limitations 1. Storm water discharges and authorized non -storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. 2. Dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non -conventional pollutants and BCT for conventional pollutants. Table 1- Numeric Action Levels, Test Methods, Detection Limits, and Reporting Units Parameter Test Discharge Min. Units Numeric Method Type Detection Action _. ......_._. _ ......� Limit Level pH ...:.:�.. _.. ��. _ lower NAL = . Field test Risk Level 2 6.5 with upper NAL = calibrated ..... 0•2 pH .5 ...... portable units lower L - instrument Risk Level 3 6.5 upper NAL = ............_ _... 8.5 Turbidity EPA 0180.1 Risk Level 2 250 NTU and/or field ....................._............ .....d��.........m_. test with 1 NTU calibrated Risk Level 3 250 NTU portable instrument B. Numeric Action Levels (NALs) 1. For Risk Level 2 and 3 dischargers, the lower storm event average NAL for pH is 6.5 pH units and the upper storm event average NAL for 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 28 Agreement No. 6574 Order pH is 8.5 pH units. The discharger shall take actions as described below if the discharge is outside of this range of pH values. 2. For Risk Level 2 and 3 dischargers, the NAL storm event daily average for turbidity is 250 NTU. The discharger shall take actions as described below if the discharge is outside of this range of turbidity values. 3. Whenever the results from a storm event daily average indicate that the discharge is below the lower NAL for pH, exceeds the upper NAL for pH, or exceeds the turbidity NAL (as listed in Table 1), the discharger shall conduct a construction site and run-on evaluation to determine whether pollutant source(s) associated with the site's construction activity may have caused or contributed to the NAL exceedance and shall immediately implement corrective actions if they are needed. 4. The site evaluation shall be documented in the SWPPP and specifically address whether the source(s) of the pollutants causing the exceedance of the NAL: a. Are related to the construction activities and whether additional BMPs are required to (1) meet BAT/BCT requirements; (2) reduce or prevent pollutants in storm water discharges from causing exceedances of receiving water objectives; and (3) determine what corrective action(s) were taken or will be taken and with a description of the schedule for completion. AND/OR: b. Are related to the run-on associated with the construction site location and whether additional BMPs measures are required to (1) meet BAT/BCT requirements; (2) reduce or prevent pollutants in storm water discharges from causing exceedances of receiving water objectives; and (3) what corrective action(s) were taken or will be taken with a description of the schedule for completion. C. Receiving Water Monitoring Triggers 1. The receiving water monitoring triggers for Risk Level 3 dischargers with direct discharges to surface waters are triggered when the daily average effluent pH values during any site phase when there is a high risk of pH discharge12 fall outside of the range of 6.0 and 9.0 pH units, or when the daily average effluent turbidity exceeds 500 NTU. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 29 Agreement No. 6574 Order 2. Risk Level 3 dischargers with with direct discharges to surface waters shall conduct receiving water monitoring whenever their effluent monitoring results exceed the receiving water monitoring triggers. If the pH trigger is exceeded, the receiving water shall be monitored for pH for the duration of coverage under this General Permit. If the turbidity trigger is exceeded, the receiving water shall be monitored for turbidity and SSC for the duration of coverage under this general permit. 3. Risk Level 3 dischargers with direct discharges to surfaces waters shall initiate receiving water monitoring when the triggers are exceeded unless the storm event causing the exceedance is determined after the fact to equal to or greater than the 5-year 24-hour storm (expressed in inches of rainfall) as determined by using these maps: http://www.wrcc.dri.edu/pcpnfreq/nca5y24.gif http://www.wrcc.dri.edu/pcpnfreq/sca5y24.gif Verification of the 5-year 24-hour storm event shall be done by reporting on -site rain gauge readings as well as nearby governmental rain gauge readings. 4. If run-on is caused by a forest fire or any other natural disaster, then receiving water monitoring triggers do not apply. 12 A period of high risk of pH discharge is defined as a project's complete utilities phase, complete vertical build phase, and any portion of any phase where significant amounts of materials are placed directly on the land at the site in a manner that could result in significant alterations of the background pH of the discharges. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 30 Agreement No. 6574 Order VI.RECEIVING WATER LIMITATIONS A. The discharger shall ensure that storm water discharges and authorized non -storm water discharges to any surface or ground water will not adversely affect human health or the environment. B. The discharger shall ensure that storm water discharges and authorized non -storm water discharges will not contain pollutants in quantities that threaten to cause pollution or a public nuisance. C. The discharger shall ensure that storm water discharges and authorized non -storm water discharges will not contain pollutants that cause or contribute to an exceedance of any applicable water quality objectives or water quality standards (collectively, WQS) contained in a Statewide Water Quality Control Plan, the California Toxics Rule, the National Toxics Rule, or the applicable Regional Water Board's Water Quality Control Plan (Basin Plan). D. Dischargers located within the watershed of a CWA § 303(d) impaired water body, for which a TMDL has been approved by the U.S. EPA, shall comply with the approved TMDL if it identifies "construction activity" or land disturbance as a source of the pollution. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 31 Agreement No. 6574 Order VII. TRAINING QUALIFICATIONS AND CERTIFICATION REQUIREMENTS A. General The discharger shall ensure that all persons responsible for implementing requirements of this General Permit shall be appropriately trained in accordance with this Section. Training should be both formal and informal, occur on an ongoing basis, and should include training offered by recognized governmental agencies or professional organizations. Those responsible for preparing and amending SWPPPs shall comply with the requirements in this Section VII. The discharger shall provide documentation of all training for persons responsible for implementing the requirements of this General Permit in the Annual Reports. B. SWPPP Certification Requirements 1. Qualified SWPPP Developer: The discharger shall ensure that SWPPPs are written, amended and certified by a Qualified SWPPP Developer (QSD). A QSD shall have one of the following registrations or certifications, and appropriate experience, as required for: a. A California registered professional civil engineer; b. A California registered professional geologist or engineering geologist; c. A California registered landscape architect; d. A professional hydrologist registered through the American Institute of Hydrology; e. A Certified Professional in Erosion and Sediment Control (CPESC) TM registered through Enviro Cert International, Inc.; f. A Certified Professional in Storm Water Quality (CPSWQ) TM registered through Enviro Cert International, Inc.; or g. A professional in erosion and sediment control registered through the National Institute for Certification in Engineering Technologies (NICET). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 32 Agreement No. 6574 Order Effective two years after the adoption date of this General Permit, a QSD shall have attended a State Water Board -sponsored or approved QSD training course. 2. The discharger shall list the name and telephone number of the currently designated Qualified SWPPP Developer(s) in the SWPPP,. 3. Qualified SWPPP Practitioner: The discharger shall ensure that all BMPs required by this General Permit are implemented by a Qualified SWPPP Practitioner (QSP). A QSP is a person responsible for non - storm water and storm water visual observations, sampling and analysis. Effective two years from the date of adoption of this General Permit, a QSP shall be either a QSD or have one of the following certifications: a. A certified erosion, sediment and storm water inspector registered through Enviro Cert International, Inc.; or b. A certified inspector of sediment and erosion control registered through Certified Inspector of Sediment and Erosion Control, Inc. Effective two years after the adoption date of this General Permit, a QSP shall have attended a State Water Board -sponsored or approved QSP training course. 4. The LRP shall list in the SWPPP, the name of any Approved Signatory, and provide a copy of the written agreement or other mechanism that provides this authority from the LRP in the SWPPP. 5. The discharger shall include, in the SWPPP, a list of names of all contractors, subcontractors, and individuals who will be directed by the Qualified SWPPP Practitioner. This list shall include telephone numbers and work addresses. Specific areas of responsibility of each subcontractor and emergency contact numbers shall also be included. 6. The discharger shall ensure that the SWPPP and each amendment will be signed by the Qualified SWPPP Developer. The discharger shall include a listing of the date of initial preparation and the date of each amendment in the SWPPP. VIII. RISK DETERMINATION The discharger shall calculate the site's sediment risk and receiving water risk during periods of soil exposure (i.e. grading and site stabilization) and use the calculated risks to determine a Risk Level(s) using the methodology in 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 33 Agreement No. 6574 Order Appendix 1. For any site that spans two or more planning watersheds,13 the discharger shall calculate a separate Risk Level for each planning watershed. The discharger shall notify the State Water Board of the site's Risk Level determination(s) and shall include this determination as a part of submitting the PRDs. If a discharger ends up with more than one Risk Level determination, the Regional Water Board may choose to break the project into separate levels of implementation. IX.RISK LEVEL 1 REQUIREMENTS Risk Level 1 Dischargers shall comply with the requirements included in Attachment C of this General Permit. X. RISK LEVEL 2 REQUIREMENTS Risk Level 2 Dischargers shall comply with the requirements included in Attachment D of this General Permit. XI. RISK LEVEL 3 REQUIREMENTS Risk Level 3 Dischargers shall comply with the requirements included in Attachment E of this General Permit. XII. ACTIVE TREATMENT SYSTEMS (ATS) Dischargers choosing to implement an ATS on their site shall comply with all of the requirements in Attachment F of this General Permit. 13 Planning watershed: defined by the Calwater Watershed documents as a watershed that ranges in size from approximately 3,000 to 10,000 acres tt ://cain.ice.ucdavis.adLdc iiwater/calwta .htrnl', http://gis.ca.gov/catalog/BrowseRecord.epl?id=22175 . 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 34 Agreement No. 6574 Order XIII. POST -CONSTRUCTION STANDARDS A. All dischargers shall comply with the following runoff reduction requirements unless they are located within an area subject to post - construction standards of an active Phase I or II municipal separate storm sewer system (MS4) permit that has an approved Storm Water Management Plan. 1. This provision shall take effect three years from the adoption date of this permit, or later at the discretion of the Executive Officer of the Regional Board. 2. The discharger shall demonstrate compliance with the requirements of this section by submitting with their NOI a map and worksheets in accordance with the instructions in Appendix 2. The discharger shall use non-structural controls unless the discharger demonstrates that non-structural controls are infeasible or that structural controls will produce greater reduction in water quality impacts. 3. The discharger shall, through the use of non-structural and structural measures as described in Appendix 2, replicate the pre -project water balance (for this permit, defined as the volume of rainfall that ends up as runoff) for the smallest storms up to the 85'h percentile storm event (or the smallest storm event that generates runoff, whichever is larger). Dischargers shall inform Regional Water Board staff at least 30 days prior to the use of any structural control measure used to comply with this requirement. Volume that cannot be addressed using non- structural practices shall be captured in structural practices and approved by the Regional Water Board. When seeking Regional Board approval for the use of structural practices, dischargers shall document the infeasibility of using non-structural practices on the project site, or document that there will be fewer water quality impacts through the use of structural practices. 4. For sites whose disturbed area exceeds two acres, the discharger shall preserve the pre -construction drainage density (miles of stream length per square mile of drainage area) for all drainage areas within the area searing a first order stream14 or larger stream and ensure that post - project time of runoff concentration is equal or greater than pre -project time of concentration. 14 A first order stream is defined as a stream with no tributaries. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 35 Agreement No. 6574 Order B. All dischargers shall implement BMPs to reduce pollutants in storm water discharges that are reasonably foreseeable after all construction phases have been completed at the site (Post -construction BMPs). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 36 Agreement No. 6574 Order XIV. SWPPP REQUIREMENTS A. The discharger shall ensure that the Storm Water Pollution Prevention Plans (SWPPPs) for all traditional project sites are developed and amended or revised by a QSD. The SWPPP shall be designed to address the following objectives: All pollutants and their sources, including sources of sediment associated with construction, construction site erosion and all other activities associated with construction activity are controlled; 2. Where not otherwise required to be under a Regional Water Board permit, all non -storm water discharges are identified and either eliminated, controlled, or treated; 3. Site BMPs are effective and result in the reduction or elimination of pollutants in storm water discharges and authorized non -storm water discharges from construction activity to the BAT/BCT standard; 4. Calculations and design details as well as BMP controls for site run-on are complete and correct, and 5. Stabilization BMPs installed to reduce or eliminate pollutants after construction are completed. B. To demonstrate compliance with requirements of this General Permit, the QSD shall include information in the SWPPP that supports the conclusions, selections, use, and maintenance of BMPs. C. The discharger shall make the SWPPP available at the construction site during working hours while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, current copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio/telephone. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 37 Agreement No. 6574 Order XV. REGIONAL WATER BOARD AUTHORITIES A. In the case where the Regional Water Board does not agree with the discharger's self -reported risk level (e.g., they determine themselves to be a Level 1 Risk when they are actually a Level 2 Risk site), Regional Water Boards may either direct the discharger to reevaluate the Risk Level(s) for their site or terminate coverage under this General Permit. B. Regional Water Boards may terminate coverage under this General Permit for dischargers who fail to comply with its requirements or where they determine that an individual NPDES permit is appropriate. C. Regional Water Boards may require dischargers to submit a Report of Waste Discharge / NPDES permit application for Regional Water Board consideration of individual requirements. D. Regional Water Boards may require additional Monitoring and Reporting Program Requirements, including sampling and analysis of discharges to sediment -impaired water bodies. E. Regional Water Boards may require dischargers to retain records for more than the three years required by this General Permit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 38 Agreement No. 6574 Order XVI. ANNUAL REPORTING REQUIREMENTS A. All dischargers shall prepare and electronically submit an Annual Report no later than September 1 of each year. B. The discharger shall certify each Annual Report in accordance with the Special Provisions. C. The discharger shall retain an electronic or paper copy of each Annual Report for a minimum of three years after the date the annual report is filed. D. The discharger shall include storm water monitoring information in the Annual Report consisting of: 1. a summary and evaluation of all sampling and analysis results, including copies of laboratory reports; 2. the analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit"); 3. a summary of all corrective actions taken during the compliance year; 4. identification of any compliance activities or corrective actions that were not implemented; 5. a summary of all violations of the General Permit; 6. the names of individual(s) who performed the facility inspections, sampling, visual observation (inspections), and/or measurements; 7. the date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation (rain gauge); and 8. the visual observation and sample collection exception records and reports specified in Attachments C, D, and E. E. The discharger shall provide training information in the Annual Report consisting of: 1. documentation of all training for individuals responsible for all activities associated with compliance with this General Permit; 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 39 Agreement No. 6574 Order 2. documentation of all training for individuals responsible for BMP installation, inspection, maintenance, and repair; and I documentation of all training for individuals responsible for overseeing, revising, and amending the SWPPP. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 40 Agreement No. 6574 ATTACHMENT A ATTACHMENT A Linear Underground/ Overhead Requirements A. DEFINITION OF LINEAR UNDERGROUND/OVERHEAD PROJECTS ....1 B. LINEAR PROJECT PERMIT REGISTRATION DOCUMENTS (PRDs) .....3 C. LINEAR PROJECT TERMINATION OF COVERAGE REQUIREMENTS..4 D. DISCHARGE PROHIBITIONS...................................................................6 E. SPECIAL PROVISIONS.............................................................................8 F. EFFLUENT STANDARDS & RECEIVING WATER MONITORING .........13 G. RECEIVING WATER LIMITATIONS........................................................16 H. TRAINING QUALIFICATIONS.................................................................17 I. TYPES OF LINEAR PROJECTS.............................................................19 J. LUP TYPE -SPECIFIC REQUIREMENTS................................................20 K. STORM WATER POLLUTION PREVENTION PLAN (SWPPP) REQUIREMENTS....................................................................................28 L. REGIONAL WATER BOARD AUTHORITIES..........................................29 M. MONITORING AND REPORTING REQUIREMENTS..............................31 All Linear Underground/Overhead project dischargers who submit permit registration documents (PRDs) indicating their intention to be regulated under the provisions of this General Permit shall comply with the following: A. DEFINITION OF LINEAR UNDERGROUND/OVERHEAD PROJECTS Linear Underground/Overhead Projects (LUPs) include, but are not limited to, any conveyance, pipe, or pipeline for the transportation of any gaseous, liquid (including water and wastewater for domestic municipal services), liquiescent, or slurry substance; any cable line or wire for the transmission of electrical energy; any cable line or wire for communications (e.g., telephone, telegraph, radio, or television messages); and associated ancillary facilities. Construction activities associated with LUPs include, but are not limited to, (a) those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment, and associated ancillary facilities); and include, but are not limited to, (b) underground utility mark -out, potholing, concrete and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/tower pad and cable/wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/ or pavement repair or replacement, and stockpile/borrow locations. 2. LUP evaluation shall consist of two tasks: 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 ATTACHMENT A a. Confirm that the project or project section(s) qualifies as an LUP. The State Water Board website contains a project determination guidance flowchart. http://www.waterboards.ca,gov/water issues) ro ramps/stormwater/con stpermits.shtml b. Identify which Type(s) (1, 2 or 3 described in Section I below) are applicable to the project or project sections based on project sediment and receiving water risk. (See Attachment A.1) 3. A Legally Responsible Person (LRP) for a Linear Underground/Overhead project is required to obtain CGP coverage under one or more permit registration document (PRD) electronic submittals to the State Water Board's Storm Water Multi -Application and Report Tracking (SMARTs) system. Attachment A.1 contains a flow chart to be used when determining if a linear project qualifies for coverage and to determine LUP Types. Since a LUP may be constructed within both developed and undeveloped locations and portions of LUPs may be constructed by different contractors, LUPs may be broken into logical permit sections. Sections may be determined based on portions of a project conducted by one contractor. Other situations may also occur, such as the time period in which the sections of a project will be constructed (e.g. project phases), for which separate permit coverage is possible. For projects that are broken into separate sections, a description of how each section relates to the overall project and the definition of the boundaries between sections shall be clearly stated. 4. Where construction activities transverse or enter into different Regional Water Board jurisdictions, LRPs shall obtain permit coverage for each Regional Water Board area involved prior to the commencement of construction activities. 5. Small Construction Rainfall Erosivity Waiver EPA's Small Construction Erosivity Waiver applies to sites between one and five acres demonstrating that there are no adverse water quality impacts. Dischargers eligible for a Rainfall Erosivity Waiver based on low erosivity potential shall complete the electronic Notice of Intent (NOI) and Sediment Risk form through the State Water Board's SMARTS system, certifying that the construction activity will take place during a period when the value of the rainfall erosivity factor is less than five. Where the LRP changes or another LRP is added during construction, the new LRP must also submit a waiver certification through the SMARTS system. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 ATTACHMENT A If a small linear construction site continues beyond the projected completion date given on the waiver certification, the LRP shall recalculate the rainfall erosivity factor for the new project duration and submit this information through the SMARTS system. If the new R factor is below five (5), the discharger shall update through SMARTS all applicable information on the waiver certification and retain a copy of the revised waiver onsite. The LRP shall submit the new waiver certification 30 days prior to the projected completion date listed on the original waiver form to assure exemption from permitting requirements is uninterrupted. If the new R factor is five (5) or above, the LRP shall be required to apply for coverage under this Order. B. LINEAR PROJECT PERMIT REGISTRATION DOCUMENTS (PRDs) Any information provided to the Regional Water Board shall comply with the Homeland Security Act and any other federal law that concerns security in the United States; any information that does not comply should not be submitted. PRDs shall consist of the following: 1. Notice of Intent (NOI) Prior to construction activities, the LRP of a proposed linear underground/overhead project shall utilize the processes and methods provided in Attachment A.2, Permit Registration Documents (PRDs) — General Instructions for Linear Underground/Overhead Projects to comply with the Construction General Permit. 2. Site Maps LRPs submitting PRDs shall include at least 3 maps. The first map will be a zoomed' 1000-1500 ft vicinity map that shows the starting point of the project. The second will be a zoomed map of 1000-1500 ft showing the ending location of the project. The third will be a larger view vicinity map, 1000 ft to 2000 ft, displaying the entire project location depending on the project size, and indicating the LUP type (1, 2 or 3) areas within the total project footprint. 3. Drawings LRPs submitting PRDs shall include a construction drawing(s) or other appropriate drawing(s) or map(s) that shows the locations of storm drain An image with a close-up/enhanced detailed view of site features that show minute details such as streets and neighboring structures. Or: An image with a close-up/enhanced detailed view of the site's surrounding infrastructure. Or: An image with a close up detailed view of the project and its surroundings. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 ATTACHMENT A inlets and waterbodies2 that may receive discharges from the construction activities and that shows the locations of BMPs to be installed for all those BMPs that can be illustrated on the revisable drawing(s) or map(s). If storm drain inlets, waterbodies, and/or BMPs cannot be adequately shown on the drawing(s) or map(s) they should be described in detail within the SWPPP. 4. Storm Water Pollution Prevention Plan (SWPPP) LUP dischargers shall comply with the SWPPP Preparation, Implementation, and Oversight requirements in Section K of this Attachment. 5. Contact information LUP dischargers shall include contact information for all contractors (or subcontractors) responsible for each area of an LUP project. This should include the names, telephone numbers, and addresses of contact personnel. Specific areas of responsibility of each contact, and emergency contact numbers should also be included. 6. In the case of a public emergency that requires immediate construction activities, a discharger shall submit a brief description of the emergency construction activity within five days of the onset of construction, and then shall submit all PRDs within thirty days. C. LINEAR PROJECT TERMINATION OF COVERAGE REQUIREMENTS The LRP may terminate coverage of an LUP when construction activities are completed by submitting an electronic notice of termination (NOT) through the State Water Board's SMARTS system. Termination requirements are different depending on the complexity of the LUP. An LUP is considered complete when: (a) there is no potential for construction -related storm water pollution; (b) all elements of the SWPPP have been completed; (c) construction materials and waste have been disposed of properly; (d) the site is in compliance with all local storm water management requirements; and (e) the LRP submits a notice of termination (NOT) and has received approval for termination from the appropriate Regional Water Board office. 1. LUP Stabilization Requirements The LUP discharger shall ensure that all disturbed areas of the construction site are stabilized prior to termination of coverage under this General Permit. Final stabilization for the purposes of submitting an NOT 2 Includes basin(s) that the MS4 storm sewer systems may drain to for Hydromodification or Hydrological Conditional of Concerns under the MS4 permits. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 4 Agreement No. 6574 ATTACHMENT A is satisfied when all soil disturbing activities are completed and one of the following criteria is met: a. In disturbed areas that were vegetated prior to construction activities of the LUP, the area disturbed must be re-established to a uniform vegetative cover equivalent to 70 percent coverage of the preconstruction vegetative conditions. Where preconstruction vegetation covers less than 100 percent of the surface, such as in arid areas, the 70 percent coverage criteria is adjusted as follows: if the preconstruction vegetation covers 50 percent of the ground surface, 70 percent of 50 percent (.70 X .50=.35) would require 35 percent total uniform surface coverage; or b. Where no vegetation is present prior to construction, the site is returned to its original line and grade and/or compacted to achieve stabilization; or c. Equivalent stabilization measures have been employed. These measures include, but are not limited to, the use of such BMPs as blankets, reinforced channel liners, soil cement, fiber matrices, geotextiles, or other erosion resistant soil coverings or treatments. 2. LUP Termination of Coverage Requirements The LRP shall file an NOT through the State Water Board's SMARTS system. By submitting an NOT, the LRP is certifying that construction activities for an LUP are complete and that the project is in full compliance with requirements of this General Permit and that it is now compliant with soil stabilization requirements where appropriate. Upon approval by the appropriate Regional Water Board office, permit coverage will be terminated. 3. Revising Coverage for Change of Acreage When the LRP of a portion of an LUP construction project changes, or when a phase within a multi -phase project is completed, the LRP may reduce the total acreage covered by this General Permit. In reducing the acreage covered by this General Permit, the LRP shall electronically file revisions to the PRDs that include: 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 5 Agreement No. 6574 ATTACHMENT A a. a revised NOI indicating the new project size; b. a revised site map showing the acreage of the project completed, acreage currently under construction, acreage sold, transferred or added, and acreage currently stabilized. c. SWPPP revisions, as appropriate; and d. certification that any new LRPs have been notified of applicable requirements to obtain General Permit coverage. The certification shall include the name, address, telephone number, and e-mail address (if known) of the new LRP. If the project acreage has increased, dischargers shall mail payment of revised annual fees within 14 days of receiving the revised annual fee notification. D. DISCHARGE PROHIBITIONS 1. LUP dischargers shall not violate any discharge prohibitions contained in applicable Basin Plans or statewide water quality control plans. Waste discharges to Areas of Special Biological Significance (ASBS) are prohibited by the California Ocean Plan, unless granted an exception issued by the State Water Board. 2. LUP dischargers are prohibited from discharging non -storm water that is not otherwise authorized by this General Permit. Non -storm water discharges authorized by this General Permit3 may include, fire hydrant flushing, irrigation of vegetative erosion control measures, pipe flushing and testing, water to control dust, street cleaning, dewatering,4 uncontaminated groundwater from dewatering, and other discharges not subject to a separate general NPDES permit adopted by a Regional Water Board. Such discharges are allowed by this General Permit provided they are not relied upon to clean up failed or inadequate construction or post - construction BMPs designed to keep materials on site. These authorized non -storm water discharges: 3 Dischargers must identify all authorized non -storm water discharges in the LUP's SWPPP and identify BMPs that will be implemented to either eliminate or reduce pollutants in non -storm water discharges. Regional Water Boards may direct the discharger to discontinue discharging such non -storm water discharges if determined that such discharges discharge significant pollutants or threaten water quality. 4Dewatering activities may be prohibited or need coverage under a separate permit issued by the Regional Water Boards. Dischargers shall check with the appropriate Regional Water Boards for any required permit or basin plan conditions prior to initial dewatering activities to land, storm drains, or waterbodies. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 6 Agreement No. 6574 ATTACHMENT A a. Shall not cause or contribute to a violation of any water quality standard; b. Shall not violate any other provision of this General Permit; c. Shall not violate any applicable Basin Plan; d. Shall comply with BMPs as described in the SWPPP; e. Shall not contain toxic constituents in toxic amounts or (other) significant quantities of pollutants; f. Shall be monitored and meets the applicable NAILS; and g. Shall be reported by the discharger in the Annual Report. If any of the above conditions are not satisfied, the discharge is not authorized by this General Permit. The discharger shall notify the Regional Water Board of any anticipated non -storm water discharges not authorized by this General Permit to determine the need for a separate NPDES permit. Additionally, some LUP dischargers may be required to obtain a separate permit if the applicable Regional Water Board has adopted a General Permit for dewatering discharges. Wherever feasible, alternatives, that do not result in the discharge of non -storm water, shall be implemented in accordance with this Attachment's Section K.2 - SWPPP Implementation Schedule. 3. LUP dischargers shall ensure that trench spans or any other soils disturbed during construction activities that are contaminated5 are not discharged with storm water or non -storm water discharges into any storm drain or water body except pursuant to an NPDES permit. When soil contamination is found or suspected and a responsible party is not identified, or the responsible party fails to promptly take the appropriate action, the LUP discharger shall have those soils sampled and tested to ensure that proper handling and public safety measures are 5 Contaminated soil contains pollutants in concentrations that exceed the appropriate thresholds that various regulatory agencies set for those substances. Preliminary testing of potentially contaminated soils will be based on odor, soil discoloration, or prior history of the site's chemical use and storage and other similar factors. When soil contamination is found or suspected and a responsible party is not identified, or the responsible party fails to promptly take the appropriate action, the discharger shall have those soils sampled and tested to ensure proper handling and public safety measures are implemented. The legally responsible person will notify the appropriate local, State, or federal agency(ies) when contaminated soil is found at a construction site, and will notify the Regional Water Board by submitting an NOT at the completion of the project. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 7 Agreement No. 6574 ATTACHMENT A implemented. The LUP discharger shall notify the appropriate local, State, and federal agency(ies) when contaminated soil is found at a construction site, and will notify the appropriate Regional Water Board. 4. Discharging any pollutant -laden water that will cause or contribute to an exceedance of the applicable Regional Water Board's Basin Plan from a dewatering site or sediment basin into any receiving water or storm drain is prohibited. 5. Debris6 resulting from construction activities are prohibited from being discharged from construction project sites. E. SPECIAL PROVISIONS 1. Duty to Comply a. The LUP discharger must comply with all of the conditions of this General Permit. Any permit noncompliance constitutes a violation of the Clean Water Act (CWA) and the Porter -Cologne Water Quality Control Act and is grounds for enforcement action and/or removal from General Permit coverage. b. The LUP discharger shall comply with effluent standards or prohibitions established under Section 307(a) of the CWA for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions, even if this General Permit has not yet been modified to incorporate the requirement. 2. General Permit Actions a. This General Permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the discharger for a General Permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not annul any General Permit condition. 6 Litter, rubble, discarded refuse, and remains of something destroyed. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 8 Agreement No. 6574 ATTACHMENT A b. If any toxic effluent standard or prohibition (including any schedule of compliance specified in such effluent standard or prohibition) is promulgated under Section 307(a) of the CWA for a toxic pollutant which is present in the discharge and that standard or prohibition is more stringent than any limitation on the pollutant in this General Permit, this General Permit shall be modified or revoked and reissued to conform to the toxic effluent standard or prohibition and the dischargers so notified. 3. Need to Halt or Reduce Activity Not a Defense It shall not be a defense for an LUP discharger in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this General Permit. 4. Duty to Mitigate The LUP discharger shall take all responsible steps to minimize or prevent any discharge in violation of this General Permit, which has a reasonable likelihood of adversely affecting human health or the environment. 5. Proper Operation and Maintenance The LUP discharger shall at all times properly operate and maintain any facilities and systems of treatment and control (and related appurtenances) which are installed or used by the discharger to achieve compliance with the conditions of this General Permit and with the requirements of the Storm Water Pollution Prevention Plan (SWPPP). Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. Proper operation and maintenance may require the operation of backup or auxiliary facilities or similar systems installed by a discharger when necessary to achieve compliance with the conditions of this General Permit. 6. Property Rights This General Permit does not convey any property rights of any sort or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor does it authorize any infringement of Federal, State, or local laws or regulations. 7. Duty to Maintain Records and Provide Information a. The LUP discharger shall maintain a paper or electronic copy of all required records, including a copy of this General Permit, for three years from the date generated or date submitted, whichever is last. These records shall be kept at the construction site or in a crew 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 9 Agreement No. 6574 ATTACHMENT A member's vehicle until construction is completed, and shall be made available upon request. b. The LUP discharger shall furnish the Regional Water Board, State Water Board, or USEPA, within a reasonable time, any requested information to determine compliance with this General Permit. The LUP discharger shall also furnish, upon request, copies of records that are required to be kept by this General Permit. 8. Inspection and Entry The LUP discharger shall allow the Regional Water Board, State Water Board, USEPA, and/or, in the case of construction sites which discharge through a municipal separate storm sewer, an authorized representative of the municipal operator of the separate storm sewer system receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: a. Enter upon the discharger's premises at reasonable times where a regulated construction activity is being conducted or where records must be kept under the conditions of this General Permit; b. Access and copy at reasonable times any records that must be kept under the conditions of this General Permit; c. Inspect at reasonable times the complete construction site, including any off -site staging areas or material storage areas, and the erosion/sediment controls; and d. Sample or monitor at reasonable times for the purpose of ensuring General Permit compliance. 9. Electronic Signature and Certification Requirements a. All Permit Registration Documents (PRDs) and Notices of Termination (NOTs) shall be electronically signed, certified, and submitted via SMARTS to the State Water Board. Either the Legally Responsible Person (LRP), as defined in Appendix 5 — Glossary, or a person legally authorized to sign and certify PRDs and NOTs on behalf of the LRP (the LRP's Approved Signatory, as defined in Appendix 5 - Glossary) must submit all information electronically via SMARTS. b. Changes to Authorization. If an Approved Signatory's authorization is no longer accurate, a new authorization satisfying the requirements of paragraph (a) of this section must be submitted via SMARTS prior to or 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 10 Agreement No. 6574 ATTACHMENT A together with any reports, information or applications to be signed by an Approved Signatory. c. All SWPPP revisions, annual reports, or other information required by the General Permit (other than PRDs and NOTs) or requested by the Regional Water Board, State Water Board, USEPA, or local storm water management agency shall be certified and submitted by the LRP or the LRP's Approved Signatory. 10. Certification Any person signing documents under Section E.9 above, shall make the following certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." 11.Anticipated Noncompliance The LUP discharger shall give advance notice to the Regional Water Board and local storm water management agency of any planned changes in the construction activity, which may result in noncompliance with General Permit requirements. 12. Penalties for Falsification of Reports Section 309(c)(4) of the CWA provides that any person who knowingly makes any false material statement, representation, or certification in any record or other document submitted or required to be maintained under this General Permit, including reports of compliance or noncompliance shall upon conviction, be punished by a fine of not more than $10,000 or by imprisonment for not more than two years or by both. 13.Oil and Hazardous Substance Liability Nothing in this General Permit shall be construed to preclude the institution of any legal action or relieve the discharger from any responsibilities, liabilities, or penalties to which the LUP discharger is or may be subject to under Section 311 of the CWA. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 11 Agreement No. 6574 ATTACHMENT A 14. Severability The provisions of this General Permit are severable; and, if any provision of this General Permit or the application of any provision of this General Permit to any circumstance is held invalid, the application of such provision to other circumstances and the remainder of this General Permit shall not be affected thereby. 15. Reopener Clause This General Permit may be modified, revoked and reissued, or terminated for cause due to promulgation of amended regulations, receipt of USEPA guidance concerning regulated activities, judicial decision, or in accordance with 40 Code of Federal Regulations (CFR) 122.62, 122.63, 122.64, and 124.5. 16. Penalties for Violations of Permit Conditions a. Section 309 of the CWA provides significant penalties for any person who violates a permit condition implementing Sections 301, 302, 306, 307, 308, 318, or 405 of the CWA or any permit condition or limitation implementing any such section in a permit issued under Section 402. Any person who violates any permit condition of this General Permit is subject to a civil penalty not to exceed $37,5007 per calendar day of such violation, as well as any other appropriate sanction provided by Section 309 of the CWA. b. The Porter -Cologne Water Quality Control Act also provides for civil and criminal penalties, which in some cases are greater than those under the CWA. 17. Transfers This General Permit is not transferable. A new LRP of an ongoing construction activity must submit PRDs in accordance with the requirements of this General Permit to be authorized to discharge under this General Permit. An LRP who is a property owner with active General Permit coverage who sells a fraction or all the land shall inform the new property owner(s) of the requirements of this General Permit. 18. Continuation of Expired Permit This General Permit continues in force and effect until a new General Permit is issued or the SWRCB rescinds this General Permit. Only those 7 May be further adjusted in accordance with the Federal Civil Penalties Inflation Adjustment Act 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 12 Agreement No. 6574 ATTACHMENT A dischargers authorized to discharge under the expiring General Permit are covered by the continued General Permit. F. EFFLUENT STANDARDS & RECEIVING WATER MONITORING 1. Narrative Effluent Limitations a. LUP dischargers shall ensure that storm water discharges and authorized non -storm water discharges regulated by this General Permit do not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. b. LUP dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of structural or non-structural controls, structures, and management practices that achieve BAT for toxic and non - conventional pollutants and BCT for conventional pollutants. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 13 Agreement No. 6574 ATTACHMENT A Table 1. Numeric Action Levels, Test Methods, Detection Limits, and Re oq!'! Units Parameter Test Discharge; din-. Units Numeric Method Type Detection Action _pF-I � .�._ ._.... _.._ Limit �._......� Le ell lower NAL =...:: Field test LUP Type 2 6.5 with upper NAL calibrated - 0.2 H _..._ -5 portable units lower L instrument LUP Type 3 6.5 upper NAL 8.5 Turbidity��w EPA ....................:............... 0180.1 LUP Type 2 250 NTU and/or field ..... test with 1 NTU calibrated LUP Type 3 250 NTU portable instrument 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 14 Agreement No. 6574 ATTACHMENT A 2. Numeric Action Levels (NALs) a. For LUP Type 2 and 3 dischargers, the lower storm event daily average NAL for pH is 6.5 pH units and the upper storm event daily average NAL for pH is 8.5 pH units. The LUP discharger shall take actions as described below if the storm event daily average discharge is outside of this range of pH values. b. For LUP Type 2 and 3 dischargers, the storm event daily average NAL for turbidity is 250 NTU. The discharger shall take actions as described below if the storm event daily average discharge is outside of this range of turbidity values. c. Whenever daily average analytical effluent monitoring results indicate that the discharge is below the lower NAL for pH, exceeds the upper NAL for pH, or exceeds the turbidity NAL (as listed in Table 1), the LUP discharger shall conduct a construction site and run-on evaluation to determine whether pollutant source(s) associated with the site's construction activity may have caused or contributed to the NAL exceedance and shall immediately implement corrective actions if they are needed. d. The site evaluation will be documented in the SWPPP and specifically address whether the source(s) of the pollutants causing the exceedance of the NAL: Are related to the construction activities and whether additional BMPs or SWPPP implementation measures are required to (1) meet BAT/BCT requirements; (2) reduce or prevent pollutants in storm water discharges from causing exceedances of receiving water objectives; and (3) determine what corrective action(s) were taken or will be taken and with a description of the schedule for completion. AND/OR: Are related to the run-on associated with the construction site location and whether additional BMPs or SWPPP implementation measures are required to (1) meet BAT/BCT requirements; (2) reduce or prevent pollutants in storm water discharges from causing exceedances of receiving water objectives; and (3) decide what corrective action(s) were taken or will be taken, including a description of the schedule for completion. 3. Receiving Water Monitoring Triggers 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 15 Agreement No. 6574 ATTACHMENT A a. The receiving water monitoring triggers for LUP Type 3 dischargers with direct discharges to surface waters are triggered when the daily average effluent pH values during any site phase when there is a high risk of pH discharge fall outside of the range of 6.0 and 9.0 pH units, or when the daily average effluent turbidity exceeds 500 NTU. b. LUP Type 3 dischargers with direct discharges to surface waters shall conduct receiving water monitoring whenever their effluent monitoring results exceed the receiving water monitoring triggers. If the pH trigger is exceeded, the receiving water shall be monitored for pH for the duration of coverage under this General Permit. If the turbidity trigger is exceeded, the receiving water shall be monitored for turbidity and SSC for the duration of coverage under this General Permit. c. LUP Type 3 dischargers with direct discharges to surfaces waters shall initiate receiving water monitoring when the triggers are exceeded unless the storm event causing the exceedance is determined after the fact to equal to or greater than the 5-year 24-hour storm (expressed in inches of rainfall) as determined by using these maps: http://www.wrcc.dri.edu/pcpnfreq/nca5y24.gif http://www.wrcc.dri.edu/pcpnfreq/sca5y24.gif Verification of the 5-year 24-hour storm event shall be done by reporting on -site rain gauge readings as well as nearby governmental rain gauge readings. d. If run-on is caused by a forest fire or any other natural disaster, then receiving water monitoring triggers do not apply. G. RECEIVING WATER LIMITATIONS 1. LUP dischargers shall ensure that storm water discharges and authorized non -storm water discharges to any surface or ground water will not adversely affect human health or the environment. 2. LUP dischargers shall ensure that storm water discharges and authorized non -storm water discharges will not contain pollutants in quantities that threaten to cause pollution or a public nuisance. 3. LUP dischargers shall ensure that storm water discharges and authorized non -storm water discharges will not contain pollutants that cause or 6 A period of high risk of pH discharge is defined as a project's complete utilities phase, complete vertical build phase, and any portion of any phase where significant amounts of materials are placed directly on the land at the site in a manner that could result in significant alterations of the background pH of the discharges. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 16 Agreement No. 6574 ATTACHMENT A contribute to an exceedance of any applicable water quality objectives or water quality standards (collectively, WQS) contained in a Statewide Water Quality Control Plan, the California Toxics Rule, the National Toxics Rule, or the applicable Regional Water Board's Water Quality Control Plan (Basin Plan). H. TRAINING QUALIFICATIONS 1. General All persons responsible for implementing requirements of this General Permit shall be appropriately trained. Training should be both formal and informal, occur on an ongoing basis, and should include training offered by recognized governmental agencies or professional organizations. Persons responsible for preparing, amending and certifying SWPPPs shall comply with the requirements in this Section H. 2. SWPPP Certification Requirements a. Qualified SWPPP Developer: The LUP discharger shall ensure that all SWPPPs be written, amended and certified by a Qualified SWPPP Developer (QSD). A QSD shall have one of the following registrations or certifications, and appropriate experience, as required for: i A California registered professional civil engineer; ii A California registered professional geologist or engineering geologist; iii A California registered landscape architect; iv A professional hydrologist registered through the American Institute of Hydrology; v A certified professional in erosion and sediment control (CPESC) TM registered through Enviro Cert International, Inc; vi A certified professional in storm water quality (CPSWQ)TM registered through Enviro Cert International, Inc.; or vii A certified professional in erosion and sediment control registered through the National Institute for Certification in Engineering Technologies (NICET). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 17 Agreement No. 6574 ATTACHMENT A Effective two years after the adoption date of this General Permit, a QSD shall have attended a State Water Board -sponsored or approved QSD training course. b. The LUP discharger shall ensure that the SWPPP is written and amended, as needed, to address the specific circumstances for each construction site covered by this General Permit prior to commencement of construction activity for any stage. c. The LUP discharger shall list the name and telephone number of the currently designated Qualified SWPPP Developer(s) in the SWPPP. d. Qualified SWPPP Practitioner: The LUP discharger shall ensure that all elements of any SWPPP for each project will be implemented by a Qualified SWPPP Practitioner (QSP). A QSP is a person responsible for non -storm water and storm water visual observations, sampling and analysis, and for ensuring full compliance with the permit and implementation of all elements of the SWPPP. Effective two years from the date of adoption of this General Permit, a QSP shall be either a QSD or have one of the following certifications: i A certified erosion, sediment and storm water inspector registered through Certified Professional in Erosion and Sediment Control, Inc.; or ii A certified inspector of sediment and erosion control registered through Certified Inspector of Sediment and Erosion Control, Inc. Effective two years after the adoption date of this General Permit, a QSP shall have attended a State Water Board -sponsored or approved QSP training course. e. The LUP discharger shall ensure that the SWPPP include a list of names of all contractors, subcontractors, and individuals who will be directed by the Qualified SWPPP Practitioner, and who is ultimately responsible for implementation of the SWPPP. This list shall include telephone numbers and work addresses. Specific areas of responsibility of each subcontractor and emergency contact numbers shall also be included. The LUP discharger shall ensure that the SWPPP and each amendment be signed by the Qualified SWPPP Developer, The LUP discharger shall include a listing of the date of initial preparation and the dates of each amendment in the SWPPP. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 18 Agreement No. 6574 ATTACHMENT A I. TYPES OF LINEAR PROJECTS This attachment establishes three types (Type 1, 2 & 3) of complexity for areas within an LUP or project section based on threat to water quality. Project area Types are determined through Attachment A. 1. The Type 1 requirements below establish the baseline requirements for all LUPs subject to this General Permit. Additional requirements for Type 2 and Type 3 LUPs are labeled. 1. Type 1 LUPs. LUP dischargers with areas of a LUP designated as Type 1 shall comply with the requirements in this Attachment. Type 1 LUPs are: a. Those construction areas where 70 percent or more of the construction activity occurs on a paved surface and where areas disturbed during construction will be returned to preconstruction conditions or equivalent protection established at the end of the construction activities for the day; or b. Where greater than 30 percent of construction activities occur within the non -paved shoulders or land immediately adjacent to paved surfaces, or where construction occurs on unpaved improved roads, including their shoulders or land immediately adjacent to them where-, i Areas disturbed during construction will be returned to preconstruction conditions or equivalent protection is established at the end of the construction activities for the day to minimize the potential for erosion and sediment deposition, and Areas where established vegetation was disturbed during construction will be stabilized and re -vegetated by the end of project. When required, adequate temporary stabilization BMPs will be installed and maintained until vegetation is established to meet minimum cover requirements established in this General Permit for final stabilization. c. Where the risk determination is as follows: i Low sediment risk, low receiving water risk, or ii Low sediment risk, medium receiving water risk, or iii Medium sediment risk, low receiving water risk 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 19 Agreement No. 6574 ATTACHMENT A 2. Type 2 LUPs: Type 2 LUPs are determined by the Combined Risk Matrix in Attachment A.1. Type 2 LUPs have the specified combination of risk: d. High sediment risk, low receiving water risk, or e. Medium sediment risk, medium receiving water risk, or f. Low sediment risk, high receiving water risk Receiving water risk is either considered "Low" for those areas of the project that are not in close proximity to a sensitive receiving watershed, "Medium" for those areas of the project within a sensitive receiving watershed yet outside of the flood plain of a sensitive receiving water body, and "High" where the soil disturbance is within close proximity to a sensitive receiving water body. Project sediment risk is calculated based on the Risk Factor Worksheet in Attachment C of this General Permit. 3. Type 3 LUPs: Type 3 LUPs are determined by the Combined Risk Matrix in Attachment A.1. Type 3 LUPs have the specified combination of risk: a. High sediment risk, high receiving water risk, or b. High sediment risk, medium receiving water risk, or c. Medium sediment risk, high receiving water risk Receiving water risk is either considered "Medium" for those areas of the project within a sensitive receiving watershed yet outside of the flood plain of a sensitive receiving water body, or "High" where the soil disturbance is within close proximity to a sensitive receiving water body. Project sediment risk is calculated based on the Risk Factor Worksheet in Attachment C. J. LUP TYPE -SPECIFIC REQUIREMENTS 1. Effluent Standards a. Narrative — LUP dischargers shall comply with the narrative effluent standards below. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 20 Agreement No. 6574 ATTACHMENT A i Storm water discharges and authorized non -storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. ii LUP dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non -conventional pollutants and BCT for conventional pollutants. b. Numeric — LUP Type 1 dischargers are not subject to a numeric effluent standard c. Numeric —LUP Type 2 dischargers are subject to a pH NAL of 6.5-8.5, and a turbidity NAL of 250 NTU. d. Numeric — LUP Type 3 dischargers are subject to a pH NAL of 6.5-8.5, and a turbidity NAL of 250 NTU. 2. Good Site Management "Housekeeping" a. LUP dischargers shall implement good site management (i.e., "housekeeping") measures for construction materials that could potentially be a threat to water quality if discharged. At a minimum, the good housekeeping measures shall consist of the following: Identify the products used and/or expected to be used and the end products that are produced and/or expected to be produced. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). Cover and berm loose stockpiled construction materials that are not actively being used (i.e. soil, spoils, aggregate, fly -ash, stucco, hydrated lime, etc.). iii Store chemicals in watertight containers (with appropriate secondary containment to prevent any spillage or leakage) or in a storage shed (completely enclosed). iv Minimize exposure of construction materials to precipitation (not applicable to materials designed to be outdoors and exposed to the environment). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 21 Agreement No. 6574 ATTACHMENT A v Implement BMPs to control the off -site tracking of loose construction and landscape materials. b. LUP dischargers shall implement good housekeeping measures for waste mans ement, which, at a minimum, shall consist of the following: i Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system. ii Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. iii Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. iv Cover waste disposal containers at the end of every business day and during a rain event. v Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. vi Contain and securely protect stockpiled waste material from wind and rain at all times unless actively being used. vii Implement procedures that effectively address hazardous and non- hazardous spills. viii Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require that: (1) Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly; and (2) Appropriate spill response personnel are assigned and trained. ix Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 22 Agreement No. 6574 ATTACHMENT A c. LUP dischargers shall implement good housekeeping for vehicle storage and' maintenance, which, at a minimum, shall consist of the following: i Prevent oil, grease, or fuel from leaking into the ground, storm drains or surface waters. ii Implement appropriate BMPs whenever equipment or vehicles are fueled, maintained or stored. iii Clean leaks immediately and disposing of leaked materials properly. d. LUP dischargers shall implement good housekeeping for landscape materials, which, at a minimum, shall consist of the following: i Contain stockpiled materials such as mulches and topsoil when they are not actively being used. ii Contain fertilizers and other landscape materials when they are not actively being used. iii Discontinue the application of any erodible landscape material at least 2 days before a forecasted rain events or during periods of precipitation. iv Applying erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. v Stacking erodible landscape material on pallets and covering or storing such materials when not being used or applied. e. LUP dischargers shall conduct an assessment and create a list of potential Rollutant sources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. This potential pollutant list shall be kept with the SWPPP and shall identify all non -visible pollutants which are known, or should be known, to occur on the construction site. At a minimum, when developing BMPs, LUP dischargers shall do the following: 9 50% or greater chance of producing precipitation. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 23 Agreement No. 6574 ATTACHMENT A i Consider the quantity, physical characteristics (e.g., liquid, powder, solid), and locations of each potential pollutant source handled, produced, stored, recycled, or disposed of at the site. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. iii Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non -storm water discharges. This shall include an assessment of past spills or leaks, non -storm water discharges, and discharges from adjoining areas. iv Ensure retention of sampling, visual observation, and inspection records. v Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. f. LUP dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. 3. Non -Storm Water Management a. LUP dischargers shall implement measures to control all non -storm water discharges during construction. b. LUP dischargers shall wash vehicles in such a manner as to prevent non -storm water discharges to surface waters or MS4 drainage systems. c. LUP dischargers shall clean streets in such a manner as to prevent unauthorized non -storm water discharges from reaching surface water or MS4 drainage systems. 4. Erosion Control a. LUP dischargers shall implement effective wind erosion control, b. LUP dischargers shall provide effective soil cover for inactive10 areas and all finished slopes, and utility backfill. 10 Areas of construction activity that have been disturbed and are not scheduled to be re -disturbed for at least 14 days 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 24 Agreement No. 6574 ATTACHMENT A c. LUP dischargers shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the discharger shall consider the use of plastic materials resistant to solar degradation. 5. Sediment Controls a. LUP dischargers shall establish and maintain effective perimeter controls as needed, and implement effective BMPs for all construction entrances and exits to sufficiently control erosion and sediment discharges from the site. b. On sites where sediment basins are to be used, LUP dischargers shall, at minimum, design sediment basins according to the guidance provided in CASQA's Construction BMP Handbook. c. Additional LUP Type 2 & 3 Requirement: LUP Type 2 & 3 dischargers shall apply linear sediment controls along the toe of the slope, face of the slope, and at the grade breaks of exposed slopes to comply with sheet flow lengths" in accordance with Table 2 below. Table 2 — Critical Slope/Sheet Flow Length Combinations NeImi,a . 0-25% 20 feet m.......n........�.... 25-5,.., feet m:_.....�.........................._... 0% 15 f feet d. Additional LUP Type 2 & 3 Requirement: LUP Type 2 & 3 dischargers shall ensure that construction activity traffic to and from the project is limited to entrances and exits that employ effective controls to prevent off -site tracking of sediment. e. Additional LUP Type 2 & 3 Requirement: LUP Type 2 & 3 dischargers shall ensure that all storm drain inlets and perimeter controls, runoff control BMPs, and pollutant controls at entrances and exits (e.g. tire washoff locations) are maintained and protected from activities that reduce their effectiveness. f. Additional LUP Type 2 & 3 Requirement: LUP Type 2 & 3 dischargers shall inspect all immediate access roads. At a minimum daily and prior to any rain event, the discharger shall remove any 11 Sheet flow length is the length that shallow, low velocity flow travels across a site. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 25 Agreement No. 6574 ATTACHMENT A sediment or other construction activity -related materials that are deposited on the roads (by vacuuming or sweeping). g. Additional LUP Type 3 Requirement: The Regional Water Board may require LUP Type 3 dischargers to implement additional site - specific sediment control requirements if the implementation of the other requirements in this section are not adequately protecting the receiving waters. 6. Run-on and Run-off Controls a. LUP dischargers shall effectively manage all run-on, all runoff within the site and all runoff that discharges off the site. Run-on from off site - shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations in this Attachment. b. Run-on and runoff controls are not required for Type 1 LUPs unless the evaluation of quantity and quality of run-on and runoff deems them necessary or visual inspections show that the site requires such controls. 7. Inspection, Maintenance and Repair a. All inspection, maintenance repair and sampling activities at the discharger's LUP location shall be performed or supervised by a QSP representing the discharger. The QSP may delegate any or all of these activities to an employee trained to do the task(s) appropriately, but shall ensure adequate deployment. b. LUP dischargers shall conduct visual inspections and observations daily during working hours (not recorded). At least once each 24-hour period during extended storm events, LUP Type 2 & 3 dischargers shall conduct visual inspections to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Inspectors shall be the QSP or be trained by the QSP. c. Upon identifying failures or other shortcomings, as directed by the QSP, LUP dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. d. For each pre- and post -rain event inspection required, LUP dischargers shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format that includes the information described below. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 26 Agreement No. 6574 ATTACHMENT A e. The LUP discharger shall ensure that the checklist remains on -site or with the SWPPP. At a minimum, an inspection checklist should include: Inspection date and date the inspection report was written. ii Weather information, including presence or absence of precipitation, estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm, and approximate amount of rainfall in inches. iii Site information, including stage of construction, activities completed, and approximate area of the site exposed. iv A description of any BMPs evaluated and any deficiencies noted. v If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non -storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls, discharge points, downstream locations and any projected maintenance activities. vi Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. vii Any corrective actions required, including any necessary changes to the SWPPP and the associated implementation dates. viii Photographs taken during the inspection, if any. ix Inspector's name, title, and signature. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 27 Agreement No. 6574 ATTACHMENT A K. STORM WATER POLLUTION PREVENTION PLAN (SWPPP) REQUIREMENTS 1. Objectives SWPPPs for all LUPs shall be developed and amended or revised by a QSD. The SWPPP shall be designed to address the following objectives: a. All pollutants and their sources, including sources of sediment, associated with construction activities associated with LUP activity are controlled; b. All non -storm water discharges are identified and either eliminated, controlled, or treated; c. BMPs are effective and result in the reduction or elimination of pollutants in storm water discharges and authorized non -storm water discharges from LUPs during construction; and d. Stabilization BMPs installed to reduce or eliminate pollutants after construction is completed are effective and maintained. 2. SWPPP Implementation Schedule a. LUPs for which PRDs have been submitted to the State Water Board shall develop a site/project location SWPPP prior to the start of land - disturbing activity in accordance with this Section and shall implement the SWPPP concurrently with commencement of soil -disturbing activities. b. For an ongoing LUP involving a change in the LRP, the new LRP shall review the existing SWPPP and amend it, if necessary, or develop a new SWPPP within 15 calendar days to conform to the requirements set forth in this General Permit. 3. Availability The SWPPP shall be available at the construction site during working hours while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio/telephone. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 28 Agreement No. 6574 ATTACHMENT A L. REGIONAL WATER BOARD AUTHORITIES 1. Regional Water Boards shall administer the provisions of this General Permit. Administration of this General Permit may include, but is not limited to, requesting the submittal of SWPPPs, reviewing SWPPPs, reviewing monitoring and sampling and analysis reports, conducting compliance inspections, gathering site information by any medium including sampling, photo and video documentation, and taking enforcement actions. 2. Regional Water Boards may terminate coverage under this General Permit for dischargers who fail to comply with its requirements or where they determine that an individual NPDES permit is appropriate. 3. Regional Water Boards may issue separate permits for discharges of storm water associated with construction activity to individual dischargers, categories of dischargers, or dischargers in a geographic area. Upon issuance of such permits by a Regional Water Board, dischargers subject to those permits shall no longer be regulated by this General Permit. 4. Regional Water Boards may direct the discharger to reevaluate the LUP Type(s) for the project (or elements/areas of the project) and impose the appropriate level of requirements. 5. Regional Water Boards may terminate coverage under this General Permit for dischargers who negligently or with willful intent incorrectly determine or report their LUP Type (e.g., they determine themselves to be a LUP Type 1 when they are actually a Type 2). 6. Regional Water Boards may review PRDs and reject or accept applications for permit coverage or may require dischargers to submit a Report of Waste Discharge / NPDES permit application for Regional Water Board consideration of individual requirements. 7. Regional Water Boards may impose additional requirements on dischargers to satisfy TMDL implementation requirements or to satisfy provisions in their Basin Plans. 8. Regional Water Boards may require additional Monitoring and Reporting Program Requirements, including sampling and analysis of discharges to sediment -impaired water bodies. 9. Regional Water Boards may require dischargers to retain records for more than the three years required by this General Permit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 29 Agreement No. 6574 ATTACHMENT A 10. Based on an LUP's threat to water quality and complexity, the Regional Water Board may determine on a case -by -case basis that an LUP, or a portion of an LUP, is not eligible for the linear project requirements contained in this Attachment, and require that the discharger comply with all standard requirements in this General Permit. 11.The Regional Water Board may require additional monitoring and reporting program requirements including sampling and analysis of discharges to CWA § 303(d)-listed water bodies. Additional requirements imposed by the Regional Water Board shall be consistent with the overall monitoring effort in the receiving waters. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 30 Agreement No. 6574 ATTACHMENT A M. MONITORING AND REPORTING REQUIREMENTS 1. Objectives LUP dischargers shall prepare a monitoring and reporting program (M&RP) prior to the start of construction and immediately implement the program at the start of construction for LUPs. The monitoring program must be implemented at the appropriate level to protect water quality at all times throughout the life of the project. The M&RP must be a part of the SWPPP, included as an appendix or separate SWPPP chapter. 2. M&RP Implementation Schedule a. LUP dischargers shall implement the requirements of this Section at the time of commencement of construction activity. LUP dischargers are responsible for implementing these requirements until construction activity is complete and the site is stabilized. b. LUP dischargers shall revise the M&RP when., I Site conditions or construction activities change such that a change in monitoring is required to comply with the requirements and intent of this General Permit. ii The Regional Water Board requires the discharger to revise its M&RP based on its review of the document. Revisions may include, but not be limited to, conducting additional site inspections, submitting reports, and certifications. Revisions shall be submitted via postal mail or electronic e-mail. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 31 Agreement No. 6574 ATTACHMENT A iii The Regional Water Board may require additional monitoring and reporting program requirements including sampling and analysis of discharges to CWA § 303(d)-listed water bodies. Additional requirements imposed by the Regional Water Board shall be consistent with the overall monitoring effort in the receiving waters. 3. LUP Type 1 Monitoring and Reporting Requirements i LUP Type 1 dischargers shall ensure that all inspections are conducted by trained personnel. The name(s) and contact number(s) of the assigned inspection personnel should be listed in the SWPPP. ii LUP Type 1 dischargers shall ensure that all visual inspections are conducted daily during working hours and in conjunction with other daily activities in areas where active construction is occurring. iii LUP Type 1 dischargers shall ensure that photographs of the site taken before, during, and after storm events are taken during inspections, and submitted through the State Water Board's SMARTS website once every three rain events. iv LUP Type 1 dischargers shall conduct daily visual inspections to verify that: (1) Appropriate BMPs for storm water and non -storm water are being implemented in areas where active construction is occurring (including staging areas); (2) Project excavations are closed, with properly protected spoils, and that road surfaces are cleaned of excavated material and construction materials such as chemicals by either removing or storing the material in protective storage containers at the end of every construction day; (3) Land areas disturbed during construction are returned to pre - construction conditions or an equivalent protection is used at the end of each workday to eliminate or minimize erosion and the possible discharge of sediment or other pollutants during a rain event. v Inspections may be discontinued in non -active construction areas where soil -disturbing activities are completed and final soil stabilization is achieved (e.g., paving is completed, substructures 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 32 Agreement No. 6574 ATTACHMENT A are installed, vegetation meets minimum cover requirements for final stabilization, or other stabilization requirements are met). vi Inspection programs are required for LUP Type 1 projects where temporary and permanent stabilization BMPs are installed and are to be monitored after active construction is completed. Inspection activities shall continue until adequate permanent stabilization is established and, in areas where re -vegetation is chosen, until minimum vegetative coverage is established in accordance with Section C.1 of this Attachment. b. LUP Type 1 Monitoring Requirements for Non -Visible Pollutants LUP Type 1 dischargers shall implement sampling and analysis requirements to monitor non -visible pollutants associated with (1) construction sites; (2) activities producing pollutants that are not visually detectable in storm water discharges; and (3) activities which could cause or contribute to an exceedance of water quality objectives in the receiving waters. Sampling and analysis for non -visible pollutants is only required where the LUP Type 1 discharger believes pollutants associated with construction activities have the potential to be discharged with storm water runoff due to a spill or in the event there was a breach, malfunction, failure and/or leak of any BMP. Also, failure to implement BMPs may require sample collection. (1) Visual observations made during the monitoring program described above will help the LUP Type 1 discharger determine when to collect samples. (2) The LUP Type 1 discharger is not required to sample if one of the conditions described above (e.g., breach or spill) occurs and the site is cleaned of material and pollutants and/or BMPs are implemented prior to the next storm event. LUP Type 1 dischargers shall collect samples down -gradient from all discharge locations where the visual observations were made triggering the monitoring, and which can be safely accessed. For sites where sampling and analysis is required, personnel trained in water quality sampling procedures shall collect storm water samples. iii If sampling for non -visible pollutant parameters is required, LUP Type 1 dischargers shall ensure that samples be analyzed for parameters indicating the presence of pollutants identified in the pollutant source assessment required in Section J.2.a.i. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 33 Agreement No. 6574 ATTACHMENT A iv LUP Type 1 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. v LUP Type 1 dischargers shall ensure that a sufficiently large sample of storm water that has not come into contact with the disturbed soil or the materials stored or used on -site (uncontaminated sample12) will be collected for comparison with the discharge sample. Samples shall be collected during the first two hours of discharge from rain events that occur during daylight hours and which generate runoff. vi LUP Type 1 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis. Analyses may include, but are not limited to, indicator parameters such as: pH, specific conductance, dissolved oxygen, conductivity, salinity, and Total Dissolved Solids (TDS). vii For laboratory analyses, all sampling, sample preservation, and other analyses must be conducted according to test procedures pursuant to 40 C.F.R. Part 136. LUP Type 1 dischargers shall ensure that field samples are collected and analyzed according to manufacturer specifications of the sampling devices employed. Portable meters shall be calibrated according to manufacturer's specification. viii LUP Type 1 dischargers shall ensure that all field and/or analytical data are kept in the SWPPP document. LUP Type 1 dischargers shall be prepared to collect samples and conduct visual observation (inspections) to meet the minimum visual observation requirements of this Attachment. The Type 1 LUP discharger is not required to physically collect_ samples or conduct visual observation (inspections) under the following conditions: (1) During dangerous weather conditions such as flooding and electrical storms; (2) Outside of scheduled site business hours. (3) When access to the site is unsafe due to storm events,. 12 Sample collected at a location unaffected by contruction activities. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 34 Agreement No. 6574 ATTACHMENT A ii If the LUP Type 1 discharger does not collect the required samples or visual observation (inspections) due to these exceptions, an explanation why the sampling or visual observation (inspections) were not conducted shall be included in both the SWPPP and the Annual Report. d. Particle Size Analysis for Risk ,Justification LUP Type 1 dischargers utilizing justifying an alternative project risk shall report a soil particle size analysis used to determine the RUSLE K-Factor. ASTM D-422 (Standard Test Method for Particle -Size Analysis of Soils), as revised, shall be used to determine the percentages of sand, very fine sand, silt, and clay on the site. 4. LUP Type 2 & 3 Monitoring and Reporting Requirements a. LUP Type 2 & 3 Inspection Re uirements LUP Type 2 & 3 dischargers shall ensure that all inspections are conducted by trained personnel. The name(s) and contact number(s) of the assigned inspection personnel should be listed in the SWPPP. ii LUP Type 2 & 3 dischargers shall ensure that all visual inspections are conducted daily during working hours and in conjunction with other daily activities in areas where active construction is occurring. iii LUP Type 2 & 3 dischargers shall ensure that photographs of the site taken before, during, and after storm events are taken during inspections, and submitted through the State Water Board's SMARTS website once every three rain events. iv LUP Type 2 & 3 dischargers shall conduct daily visual inspections to verify that appropriate BMPs for storm water and non -storm water are being implemented and in place in areas where active construction is occurring (including staging areas). v LUP Type 2 & 3 dischargers shall conduct inspections of the construction site prior to anticipated storm events, during extended storm events, and after actual storm events to identify areas contributing to a discharge of storm water associated with construction activity. Pre -storm inspections are to ensure that BMPs are properly installed and maintained; post -storm inspections are to assure that BMPs have functioned adequately. During 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 35 Agreement No. 6574 ATTACHMENT A extended storm events, inspections shall be required during normal working hours for each 24-hour period. vi Inspections may be discontinued in non -active construction areas where soil -disturbing activities are completed and final soil stabilization is achieved (e.g., paving is completed, substructures are installed, vegetation meets minimum cover requirements for final stabilization, or other stabilization requirements are met). vii LUP Type 2 & 3 dischargers shall implement a monitoring program for inspecting projects that require temporary and permanent stabilization BMPs after active construction is complete. Inspections shall ensure that the BMPs are adequate and maintained. Inspection activities shall continue until adequate permanent stabilization is established and, in vegetated areas, until minimum vegetative coverage is established in accordance with Section C.1 of this Attachment. viii If possible, LUP Type 2 & 3 dischargers shall install a rain gauge on -site at an accessible and secure location with readings made during all storm event inspections. When readings are unavailable, data from the closest rain gauge with publically available data may be used. ix LUP Type 2 & 3 dischargers shall Include and maintain a log of the inspections conducted in the SWPPP. The log will provide the date and time of the inspection and who conducted the inspection. Table 4. LUP LUP Type 2 & 3 Effluent Monitorina Reauirements Frequency Minimum of 3 samples per day characterizing discharges associated with construction activity from the project active areas of construction. Minimum of 3 per samples er d—a P characterizing discharges associated with construction activity from the project active areas of construction. Effluent Monitoring Turbidity, pH, an.d...,n......on..... -visible pollutant parameters (if applicable) turbidity, pH, and non -visible pollutant parameters (if applicable) i LUP Type 2 & 3 dischargers shall collect storm water grab samples from sampling locations characterizing discharges associated with activity from the LUP active areas of construction. At a minimum, 3 samples shall be collected per day of discharge. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 36 Agreement No. 6574 ATTACHMENT A ii LUP Type 2 & 3 dischargers shall collect samples of stored or contained storm water that is discharged subsequent to a storm event producing precipitation of inch or more at the time of discharge. iii LUP Type 2 & 3 dischargers shall ensure that storm water grab sample(s) obtained be representative of the flow and characteristics of the discharge. iv LUP Type 2 & 3 dischargers shall analyze their effluent samples for: (1) pH and turbidity (2) Any additional parameter for which monitoring is required by the Regional Water Board. c. LUP Type 2 & 3 Storm Water Effluent Sarngling Locations i LUP Type 2 & 3 dischargers shall perform sampling and analysis of storm water discharges to characterize discharges associated with construction activity from the entire disturbed project or area. ii LUP Type 2 & 3 dischargers may monitor and report run-on from surrounding areas if there is reason to believe run-on may contribute to exceedance of NALs. iii LUP Type 2 & 3 dischargers shall select analytical test methods from the list provided in Table 5 below. iv LUP Type 2 & 3 dischargers shall ensure that all storm water sample collection preservation and handling shall be conducted in accordance with the "Storm Water Sample Collection and Handling Instructions" below. d. LUP Type 3 Receiving Water Monitoring Re uirements In the event that an LUP Type 3 discharger's effluent exceeds the receiving water monitoring triggers of 500 NTU turbidity or pH range of 6.0-9.0, contained in this General Permit and has a direct discharge to receiving waters, the LUP discharger shall subsequently sample Receiving Waters (RWs) for turbidity, pH (if applicable) and SSC for the duration of coverage under this General Permit. In the event that an LUP Tupe 3 discharger utilizing ATS with direct discharges into receiving waters discharges effluent that exceeds the NELs in this permit, the discharger shall 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 37 Agreement No. 6574 ATTACHMENT A subsequently sample RWs for turbidity, pH (if applicable), and SSC for the duration of coverage under this General Permit. ii LUP Type 3 dischargers that meet the project criteria in Appendix 3 of this General Permit and have more than 30 acres of soil disturbance in the project area or project section area designated as Type 3, shall comply with the Bioassessment requirements prior to commencement of construction activity. iii LUP Type 3 dischargers shall obtain RW samples in accordance with the requirements of the Receiving Water Sampling Locations section (Section MA.c. of this Attachment). e. LUP TvDe 3 Receiving Water Sampling Locations i Upstream/up-gradient RW samples: LUP Type 3 dischargers shall obtain any required upstream/up-gradient receiving water samples from a representative and accessible location as close as possible to and upstream from the effluent discharge point. ii Downstream/down-gradient RW samples: LUP Type 3 dischargers shall obtain any required downstream/down-gradient receiving water samples from a representative and accessible location as close as possible to and downstream from the effluent discharge point. iii If two or more discharge locations discharge to the same receiving water, LUP Type 3 dischargers may sample the receiving water at a single upstream and downstream location. f. LUP Type 2 & 3 Monitoring Requirements for Non -Visible Pollutants LUP Type 2 & 3 dischargers shall implement sampling and analysis requirements to monitor non -visible pollutants associated with (1) construction sites; (2) activities producing pollutants that are not visually detectable in storm water discharges; and (3) activities which could cause or contribute to an exceedance of water quality objectives in the receiving waters. Sampling and analysis for non -visible pollutants is only required where LUP Type 2 & 3 dischargers believe pollutants associated with construction activities have the potential to be discharged with storm water runoff due to a spill or in the event there was a breach, malfunction, failure and/or leak of any BMP. Also, failure to implement BMPs may require sample collection. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 38 Agreement No. 6574 ATTACHMENT A (1) Visual observations made during the monitoring program described above will help LUP Type 2 & 3 dischargers determine when to collect samples. (2) LUP Type 2 & 3 dischargers are not required to sample if one of the conditions described above (e.g., breach or spill) occurs and the site is cleaned of material and pollutants and/or BMPs are implemented prior to the next storm event. LUP Type 2 & 3 dischargers shall collect samples down -gradient from the discharge locations where the visual observations were made triggering the monitoring and which can be safely accessed. For sites where sampling and analysis is required, personnel trained in water quality sampling procedures shall collect storm water samples. iii If sampling for non -visible pollutant parameters is required, LUP Type 2 & 3 dischargers shall ensure that samples be analyzed for parameters indicating the presence of pollutants identified in the pollutant source assessment required in Section J.2.a.i. iv LUP Type 2 & 3 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. v LUP Type 2 & 3 dischargers shall ensure that a sufficiently large sample of storm water that has not come into contact with the disturbed soil or the materials stored or used on -site (uncontaminated sample13) will be collected for comparison with the discharge sample. Samples shall be collected during the first two hours of discharge from rain events that occur during daylight hours and which generate runoff. vi LUP Type 2 & 3 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis. Analyses may include, but are not limited to, indicator parameters such as: pH, specific conductance, dissolved oxygen, conductivity, salinity, and Total Dissolved Solids (TDS). vii For laboratory analyses, all sampling, sample preservation, and other analyses must be conducted according to test procedures pursuant to 40 C.F.R. Part 136. LUP Type 2 & 3 dischargers shall ensure that field samples are collected and analyzed according to manufacturer specifications of the sampling devices employed. 13 Sample collected at a location unaffected by construction activities 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 39 Agreement No. 6574 ATTACHMENT A Portable meters shall be calibrated according to manufacturer's specification. viii LUP Type 2 & 3 dischargers shall ensure that all field and/or analytical data are kept in the SWPPP document. g. LUP TVQe 2 & 3 Visual Observation and Sample Collection Exceptions LUP Type 2 & 3 dischargers shall be prepared to collect samples and conduct visual observation (inspections) to meet the minimum visual observation requirements of this Attachment. Type 2 & 3 LUP dischargers are not required to physically collect samples or conduct visual observation (inspections) under the following conditions: (1) During dangerous weather conditions such as flooding and electrical storms; (2) Outside of scheduled site business hours. (3) When access to the site is unsafe due to storm events. ii If the LUP Type 2 or 3 discharger does not collect the required samples or visual observation (inspections) due to these exceptions, an explanation why the sampling or visual observation (inspections) were not conducted shall be included in both the SWPPP and the Annual Report. h. LUP Type 2 & 3 Storm Water Sample Collection and Handlin Instructions LUP Type 2 & 3 dischargers shall refer to Table 5 below for test Methods, detection Limits, and reporting Units. During storm water sample collection and handling, the LUP Type 2 & 3 discharger shall: i Identify the parameters required for testing and the number of storm water discharge points that will be sampled. Request the laboratory to provide the appropriate number of sample containers, types of containers, sample container labels, blank chain of custody forms, and sample preservation instructions. Determine how to ship the samples to the laboratory. The testing laboratory should receive samples within 48 hours of the physical sampling (unless otherwise required by the laboratory). The options are to either deliver the samples to the laboratory, arrange to have the laboratory pick them up, or ship them overnight to the laboratory. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 40 Agreement No. 6574 ATTACHMENT A iii Use only the sample containers provided by the laboratory to collect and store samples. Use of any other type of containers could contaminate your samples. iv Prevent sample contamination, by not touching, or putting anything into the sample containers before collecting storm water samples. v Not overfilling sample containers. Overfilling can change the analytical results. vi Tightly screw the cap of each sample container without stripping the threads of the cap. vii Complete and attach a label to each sample container. The label shall identify the date and time of sample collection, the person taking the sample, and the sample collection location or discharge point. The label should also identify any sample containers that have been preserved. viii Carefully pack sample containers into an ice chest or refrigerator to prevent breakage and maintain temperature during shipment. Remember to place frozen ice packs into the shipping container. Samples should be kept as close to 4° C (39' F) as possible until arriving at the laboratory. Do not freeze samples. ix Complete a Chain of Custody form for each set of samples. The Chain of Custody form shall include the discharger's name, address, and phone number, identification of each sample container and sample collection point, person collecting the samples, the date and time each sample container was filled, and the analysis that is required for each sample container. x Upon shipping/delivering the sample containers, obtain both the signatures of the persons relinquishing and receiving the sample containers. A Designate and train personnel to collect, maintain, and ship samples in accordance with the above sample protocols and good laboratory practices. xii Refer to the Surface Water Ambient Monitoring Program's (SWAMP) 2008 Quality Assurance Program Plan (QAPrP) for more 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 41 Agreement No. 6574 ATTACHMENT A information on sampling collection and analysis. See http://www.waterboards.ca.gov/water—issues/programs/swaMp/14 Table 5. Test Methods, Detection Limits. ..�....... Reportm Units and Applicable NALs Parameter Test Discharge 9 Min. Reporting g _ Numeric mm (LUP ...... Type Method Type Detection Units Action 3) Limit Levels Receiving Water Monitoring Tower pH Field test Type 2 & 3 0.2 pH units Lower = 6.5 Lower = 6.0 with upper = 8.5 upper = 9.0 calibrated portable instrument Turbidity EPA Type 2 & 3 1 NTU 250 NTU 500 NTU 0180.1 and/or field test with calibrated portable instrument S.. Type SC - ASTM 3 if 5_.....__..,,, Mg/L N/A �...._N/A Method D I Receiving 3977-9715 1 Water Monitoring Trigger is exceeded Bioassessment (S TE) e,_...�.�.�TYPe..3 N/A N/A �. N/A �.�_..........'w� N/A �_N/A. . ...m.. Level I of LUPs > 30 (SAFIT),16 acres fixed -count of 600 org/sample i The LUP Type 2 or 3 discharger's project M&RP shall include a description of the following items: (1) Visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures. 14 Additional information regarding SWAMP's QAPrP can be found at: f°itt :llwww.waterboards.ca. t)vlwater ussuesl ro !g!nj/swam 1. 15 ASTM, '1999 Standard Test Method for Determining Se6ment Concentration in Water Samples: American Society of Testing and Materials, D 3977-97, Vol. 11.02, pp. 389-394 16 The current SAFIT STEs (28 November 2006) list requirements for both the Level I and Level II taxonomic effort, and are located at: hlt ://www.swrcb.caa ov/swam' /docsPsafit/ to list„ df. When new editions are published by SAFIT, they will supersede all previous editions. All editions will be posted at the State Water Board's SWAMP website. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 42 Agreement No. 6574 ATTACHMENT A (2) Sampling locations, and sample collection and handling procedures. This shall include detailed procedures for sample collection, storage, preservation, and shipping to the testing lab to assure that consistent quality control and quality assurance is maintained. Dischargers shall attach to the monitoring program a copy of the Chain of Custody form used when handling and shipping samples. (3) Identification of the analytical methods and related method detection limits (if applicable) for each parameter required in Section MAJ above. LUP Type 2 & 3 dischargers shall ensure that all sampling and sample preservation be in accordance with the current edition of "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association). All monitoring instruments and equipment (including a discharger's own field instruments for measuring pH and turbidity) shall be calibrated and maintained in accordance with manufacturers' specifications to ensure accurate measurements. All laboratory analyses shall be conducted according to test procedures under 40 CFR Part 136, unless other test procedures have been specified in this General Permit or by the Regional Water Board. With the exception of field analysis conducted by the discharger for turbidity and pH, all analyses shall be sent to and conducted at a laboratory certified for such analyses by the State Department of Health Services (SSC exception). The LUP discharger shall conduct its own field analysis of pH and may conduct its own field analysis of turbidity if the discharger has sufficient capability (qualified and trained employees, properly calibrated and maintained field instruments, etc.) to adequately perform the field analysis. LUP Type 2 & 3 dischargers shall refer to Table 5 above for test Methods, detection Limits, and reporting Units. i pH: LUP Type 2 & 3 dischargers shall perform pH analysis on -site with a calibrated pH meter or pH test kit. The LUP discharger shall record pH monitoring results on paper and retain these records in accordance with Section M.4.o, below. ii Turbidity: LUP Type 2 & 3 dischargers shall perform turbidity analysis using a calibrated turbidity meter (turbidimeter), either on - site or at an accredited lab. Acceptable test methods include Standard Method 2130 or USEPA Method 180.1. The results shall 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 43 Agreement No. 6574 ATTACHMENT A be recorded in the site log book in Nephelometric Turbidity Units (NTU). iii Suspended sediment concentration (SSC): LUP Type 3 dischargers exceeding the turbidity Receiving Water Monitoring Trigger, shall perform SSC analysis using ASTM Method D3977- 97. iv Bioassessment: LUP Type 3 dischargers shall perform bioassessment sampling and analysis according to Appendix 3 of this General Permit. If an LUP Type 2 or 3 discharger is part of a qualified regional watershed -based monitoring program the LUP Type 2 or 3 discharger may be eligible for relief from the monitoring requirements in this Attachment. The Regional Water Board may approve proposals to substitute an acceptable watershed -based monitoring program if it determines that the watershed -based monitoring program will provide information to determine each discharger's compliance with the requirements of this General Permit. I. Particle Size Analysis for Risk Justification LUP Type 2 & 3 dischargers justifying an alternative project risk shall report a soil particle size analysis used to determine the RUSLE K- Factor. ASTM D-422 (Standard Test Method for Particle -Size Analysis of Soils), as revised, shall be used to determine the percentages of sand, very fine sand, silt, and clay on the site. i In the event that any effluent sample exceeds an applicable NAL, the Regional Water Boards may require LUP Type 2 & 3 dischargers to submit NAL Exceedance Reports. ii LUP Type 2 & 3 dischargers shall certify each NAL Exceedance Report in accordance with the Special Provisions for Construction Activity. iii LUP Type 2 & 3 dischargers shall retain an electronic or paper copy of each NAL Exceedance Report for a minimum of three years after the date the exceedance report is filed. iv LUP Type 2 & 3 dischargers shall include in the NAL Exceedance Report: 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 44 Agreement No. 6574 ATTACHMENT A (1) the analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit"); and (2) the date, place, time of sampling, visual observation (inspections), and/or measurements, including precipitation. (3) Description of the current BMPs associated with the effluent sample that exceeded the NAL and the proposed corrective actions taken. n. Monitoring Records LUP Type 2 & 3 dischargers shall ensure that records of all storm water monitoring information and copies of all reports (including Annual Reports) required by this General Permit be retained for a period of at least three years. LUP Type 2 & 3 dischargers may retain records off - site and make them available upon request. These records shall include: i The date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation (rain gauge); ii The individual(s) who performed the facility inspections, sampling, visual observation (inspections), and or measurements; iii The date and approximate time of analyses; iv The individual(s) who performed the analyses; v A summary of all analytical results from the last three years, the method detection limits and reporting units, the analytical techniques or methods used, and all chain of custody forms; vi Quality assurance/quality control records and results; vii Non -storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records (see Section MA.a above); viii Visual observation and sample collection exception records (see Section MA.g above); and 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 45 Agreement No. 6574 ATTACHMENT A ix The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 46 Agreement No. 6574 ATTACHMENT A.1 ATTACHMENT A.1 LUP Project Area or Project Section Area Type Determination 11 W a s Will disturbed b Yes d to pre- 7 %of the be returned pro- Yes construction Yes construction conditions or or equivalent activity occur d on paved condition* at the e end of the day? surfaces"? No I No Will the NI -I Will> 30% N11 Construction of the construction N "' activity occur on No activity occur within theNo unpaved improved non -paved shoulders or roads, including their land immediately shoulders or land adjacent to paved immediately surfaces? Nls, adjacent Yes to them? Will areas Yes disturbed be returned to pre- No construction conditions or equivalent condition* at the end of the day? Yes I No When No required, will /stabhshcd adequate temporary areas of stabilization BMPs be established vegetation Yes Yes installed and maintained until disturbed by the vegetation is established to vegetation construction be stabilized meet the Permit's minimum and revegetated by the cover requirements for '%, end of the project? final stabilization? f n *See Definition ofTerras ** Or: "Will < 30% of the soil disturbance occur on juMayd surfaces? 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 This is a Project Type I LUP Yes Agreement No. 6574 E Is the project area or project section area located within a Sediment S 0"""' It, 'N, Watershed*? * See Definition of Terms RECEIVING WATER RISK ATTACHMENT A.1 LUP Project Area or Project Section Area Type Determination Is the project area or section X� located within the flood Yes plain or flood prone area (riparian zone) of a Sensitive fteceivin Rommmi NO Calculate the Sediment Risk Based on Appendix I Risk Factor Worksheet Project Sediment Risk "LOW": < 15 tons/acre "MEDIUM": > 15 and < 75 tons/acre; or "HIGH": ? 75 tons/acre PROJECT SEDIMENT RISK ATTACHMENTA.1 Receiving Water Risk: LOW MEDIUM HIGH LOW 1 Type 1_ Type 2 MEDIUM HIGH _jfft Type 1 Type 2 Type 2 Type 3 Type 3 Type 3 2009-0009-DWQ as amended by 2010-0014-DWQ 8,2012-0006-DWQ 2 Agreement No. 6574 ATTACHMENT A.1 ATTACHMENT A.1 Definition of Terms 1. Equivalent Condition — Means disturbed soils such as those from trench excavation are required to be hauled away, backfilled into the trench, and/or covered (e.g., metal plates, pavement, plastic covers over spoil piles) at the end of the construction day. 2. Linear Construction Activity — Linear construction activity consists of underground/ overhead facilities that typically include, but are not limited to, any conveyance, pipe or pipeline for the transportation of any gaseous, liquid (including water, wastewater for domestic municipal services), liquescent, or slurry substance; any cable line or wire for the transmission of electrical energy; any cable line or wire for communications (e.g., telephone, telegraph, radio or television messages); and associated ancillary facilities. Construction activities associated with LUPs include, but are not limited to those activities necessary for the installation of underground and overhead linear facilities (e.g., conduits, substructures, pipelines, towers, poles, cables, wires, connectors, switching, regulating and transforming equipment and associated ancillary facilities) and include, but are not limited to, underground utility mark -out, potholing, concrete and asphalt cutting and removal, trenching, excavation, boring and drilling, access road and pole/ tower pad and cable/ wire pull station, substation construction, substructure installation, construction of tower footings and/or foundations, pole and tower installations, pipeline installations, welding, concrete and/or pavement repair or replacement, and stockpile/ borrow locations. 3. Sediment Sensitive Receiving Water Body — Defined as a water body segment that is listed on EPA's approved CWA 303(d) list for sedimentation/siltation, turbidity, or is designated with beneficial uses of SPAWN, MIGRATORY, and COLD. 4. Sediment Sensitive Watershed — Defined as a watershed draining into a receiving water body listed on EPA's approved CWA 303(d) list for sedimentation/siltation, turbidity, or a water body designated with beneficial uses of SPAWN, MIGRATORY, and COLD. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 ATTACHMENT A.2 ATTACHMENT A.2 PERMIT REGISTRATION DOCUMENTS (PRDs) GENERAL INSTRUCTIONS FOR LINEAR UNDERGROUND/OVERHEAD PROJECTS TO COMPLY WITH THE CONSTRUCTION GENERAL PERMIT GENERAL INSTRUCTIONS Who Must Submit This permit is effective on July 1, 2010. The Legally Responsible Person (LRP) for construction activities associated with linear underground/overhead project (LUP) must electronically apply for coverage under this General Permit on or after July 1, 2010. If it is determined that the LUP construction activities require an NPDES permit, the Legally Responsible Person' (LRP) shall submit PRDs for this General Permit in accordance with the following: LUPs associated with Private or Municipal Development Projects For LUPs associated with pre -development and pre -redevelopment construction activities; The LRP must obtain coverage under this General Permit for its pre -development and pre - redevelopment construction activities where the total disturbed land area of these construction activities is greater than 1 acre. 2. For LUPs associated with new development and redevelopment construction projects: The LRP must obtain coverage under this General Permit for LUP construction activities associated with new development and redevelopment projects where the total disturbed land area of the LUP is greater than 1 acre. Coverage under this permit is not required where the same LUP construction activities are covered by another NPDES permit. LUPs not associated with private or municipal new development or redevelopment projects: The LRP must obtain coverage under this General Permit on or after July 1, 2010 for its LUP construction activities where the total disturbed land area is greater than 1 acre. PRD Submittal Re uirements Prior to the start of construction activities a LRP must submit PRDs and fees to the State Water Board for each LUP. New and Ongoing LUPs Dischargers of new LUPs that commence construction activities after the adoption date of this General Permit shall file PRDs prior to the commencement of construction and implement the SWPPP upon the start of construction. person possessing the title of the land on which the construction activities will occur for the regulated site 2 obtain coverage means filing PRDs for the project. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 1 Agreement No. 6574 ATTACHMENT A.2 PERMIT REGISTRATION DOCUMENTS (PRDs) GENERAL INSTRUCTIONS (CONTINUED) Dischargers of ongoing LUPs that are currently covered under State Water Board Order No. 2003- 0007 (Small LUP General Permit) shall electronically file Permit Registration Documents no later than July 1, 2010. After July 1, 2010, all NOls subject to State Water Board Order No. 2003-0007- DWQ will be terminated. All existing dischargers shall be exempt from the risk determination requirements in Attachment A. All existing dischargers are therefore subject to LUP Type 1 requirements regardless of their project's sediment and receiving water risks. However, a Regional Board retains the authority to require an existing discharger to comply with the risk determination requirements in Attachment A. The Permit Registration Documents (PRDs) can be found at www.waterboards.ca.gov/water—issues/programs/stormwater/ Fees The annual fee for storm water permits are established through the State of California Code of Regulations. To obtain coverage under the General Permit, the LRP must include the complete PRDs and the annual fee. All PRDs deemed incomplete will be rejected with an explanation as to what is required to complete submittal. Upon receipt of complete PRDs and associated fee, each discharger will be sent a waste discharger's identification (WDID) number. LUP construction activity does not include routine maintenance projects to maintain original line and grade, hydraulic capacity, or original purpose of the facility. Routine maintenance projects are projects associated with operations and maintenance activities that are conducted on existing lines and facilities and within existing right-of-way, easements, franchise agreements or other legally binding agreements of the discharger. Routine maintenance projects include, but are not limited to projects that are conducted to: Maintain the original urpose of the facility, or hydraulic capacity. Update existing lines and facilities to comply with applicable codes, standards and regulations regardless if such projects result in increased capacity. Repairing leaks. Routine maintenance does not include construction of new4 lines or facilities resulting from compliance with applicable codes, standards and regulations. 3 Update existing lines includes replacing existing lines with new materials or pipes.. 4 New lines are those that are not associated with existing facilities and are not pail of a project to update or replace existing lines. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 2 Agreement No. 6574 ATTACHMENT A.2 PERMIT REGISTRATION DOCUMENTS (PRDs) GENERAL INSTRUCTIONS (CONTINUED) Routine maintenance projects do not include those areas of maintenance projects that are outside of an existing right-of-way, franchise, easements, or agreements. When a project must acquire new areas, those areas may be subject to this General Permit based on the area of disturbed land outside the original right-of-way, easement, or agreement. 2. LUP construction activity does not include field activities associated with the planning and design of a project (e.g., activities associated with route selection). 3. Tie-ins conducted immediately adjacent to "energized" or "pressurized" facilities by the discharger are not considered small construction activities where all other LUP construction activities associated with the tie-in are covered by a NOI and SWPPP of a third party or municipal agency. Calculatina Land Disturbance Areas of LUPs The total land area disturbed for LUPs is the sum of the: • Surface areas of trenches, laterals and ancillary facilities, plus • Area of the base of stockpiles on unpaved surfaces, plus • Surface area of the borrow area, plus • Areas of paved surfaces constructed for the project, plus • Areas of new roads constructed or areas of major reconstruction to existing roads (e.g. improvements to two -track surfaces or road widening) for the sole purpose of accessing construction activities or as part of the final project, plus • Equipment and material storage, staging, and preparation areas (laydown areas) not on paved surfaces, plus • Soil areas outside the surface area of trenches, laterals and ancillary facilities that will be graded, and/or disturbed by the use of construction equipment, vehicles and machinery during construction activities. Stockpiling Areas Stockpiling areas, borrow areas and the removal of soils from a construction site may or may not be included when calculating the area of disturbed soil for a site depending on the following conditions: • For stockpiling of soils onsite or immediately adjacent to a LUP site and the stockpile is not on a paved surface, the area of the base of the stockpile is to be included in the disturbed area calculation. • The surface area of borrow areas that are onsite or immediately adjacent to a project site are to be included in the disturbed area calculation. • For soil that is hauled offsite to a location owned or operated by the discharger that is not a paved surface, the area of the base of the stockpile is to be included in the disturbed area calculation except when the offsite location is already subject to a separate storm water permit. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 3 Agreement No. 6574 ATTACHMENT A.2 PERMIT REGISTRATION DOCUMENTS (PRDs) GENERAL INSTRUCTIONS (CONTINUED) For soil that is brought to the project from an off -site location owned or operated by the discharger the surface area of the borrow pit is to be included in the disturbed area calculation except when the offsite location is already subject to a separate storm water permit. Trench spoils on a paved surface that are either returned to the trench or excavation or hauled away from the project daily for disposal or reuse will not be included in the disturbed area calculation. If you have any questions concerning submittal of PRDs, please call the State Water Board at (866) 563-3107. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 4 Agreement No. 6574 ATTACHMENT B ATTACHMENT B PERMIT REGISTRATION DOCUMENTS (PRDs) TO COMPLY WITH THE TERMS OF THE GENERAL PERMIT TO DISCHARGE STORM WATER ASSOCIATED WITH CONSTRUCTION ACTIVITY GENERAL INSTRUCTIONS A. All Linear Construction Projects shall comply with the PRD requirements in Attachment A.2 of this Order. B. Who Must Submit Discharges of storm water associated with construction that results in the disturbance of one acre or more of land must apply for coverage under the General Construction Storm Water Permit (General Permit). Any construction activity that is a part of a larger common plan of development or sale must also be permitted, regardless of size. (For example, if 0.5 acre of a 20-acre subdivision is disturbed by the construction activities of discharger A and the remaining 19.5 acres is to be developed by discharger B, discharger A must obtain a General Storm Water Permit for the 0.5 acre project). Other discharges from construction activities that are covered under this General Permit can be found in the General Permit Section II.B. It is the LRP's responsibility to obtain coverage under this General Permit by electronically submitting complete PRDs (Permit Registration Documents). In all cases, the proper procedures for submitting the PRDs must be completed before construction can commence. C. Construction Activity Not Covered By This General Permit Discharges from construction that are not covered under this General Permit can be found in the General Permit Sections ILA &B.. D. Annual Fees and Fee Calculation Annual fees are calculated based upon the total area of land to be disturbed not the total size of the acreage owned. However, the calculation includes all acres to be disturbed during the duration of the project. For example, if 10 acres are scheduled to be disturbed the first year and 10 in each subsequent year for 5 years, the annual fees would be based upon 50 acres of disturbance. The State Water Board will evaluate adding acreage to an existing Permit Waste Discharge Identification (WDID) number on a case -by -case basis. In general, any acreage to be considered must be contiguous to the permitted land area and the existing 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 1 Agreement No. 6574 ATTACHMENT B SWPPP must be appropriate for the construction activity and topography of the acreage under consideration. As acreage is built out and stabilized or sold, the Change of Information (COI) form enables the applicant to remove those acres from inclusion in the annual fee calculation. Checks should be made payable to: State Water Board. The Annual fees are established through regulations adopted by the State Water Board. The total annual fee is the current base fee plus applicable surcharges for all construction sites submitting an NOI, based on the total acreage to be disturbed during the life of the project. Annual fees are subject to change by regulation. Dischargers that apply for and satisfy the Small Construction Erosivity Wavier requirements shall pay a fee of $200.00 plus an applicable surcharge, see the General Permit Section II.B.7. E. When to Apply LRP's proposing to conduct construction activities subject to this General Permit must submit their PRDs prior to the commencement of construction activity. F. Requirements for Completing Permit Registration Documents (PRDs) All dischargers required to comply with this General Permit shall electronically submit the required PRDs for their type of construction as defined below. G. Standard PRD Requirements (All Dischargers) 1. Notice of Intent 2. Risk Assessment (Standard or Site -Specific) 3. Site Map 4. SWPPP 5. Annual Fee 6. Certification H. Additional PRD Requirements Related to Construction Type 1. Discharger in unincorporated areas of the State (not covered under an adopted Phase I or II SUSMP requirements) and that are not a linear project shall also submit a completed: a. Post -Construction Water Balance Calculator (Appendix 2). 2. Dischargers who are proposing to implement ATS shall submit: a. Complete ATS Plan in accordance with Attachment F at least 14 days prior to the planned operation of the ATS and a paper copy shall be available onsite during ATS operation. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 2 Agreement No. 6574 ATTACHMENT B b. Certification proof that design done by a professional in accordance with Attachment F. 3. Dischargers who are proposing an alternate Risk Justification;. a. Particle Size Analysis. I. Exceptions to Standard PRD Requirements Construction sites with an R value less than 5 as determined in the Risk Assessment are not required to submit a SWPPP. J. Description of PRDs 1. Notice of Intent (NOI) 2. Site Map(s) Includes: a. The project's surrounding area (vicinity) b. Site layout c. Construction site boundaries d. Drainage areas e. Discharge locations f. Sampling locations g. Areas of soil disturbance (temporary or permanent) h. Active areas of soil disturbance (cut or fill) i. Locations of all runoff BMPs j. Locations of all erosion control BMPs k. Locations of all sediment control BMPs I. ATS location (if applicable) m. Locations of sensitive habitats, watercourses, or other features which are not to be disturbed n. Locations of all post -construction BMPs o. Locations of storage areas for waste, vehicles, service, loading/unloading of materials, access (entrance/exits) points to construction site, fueling, and water storage, water transfer for dust control and compaction practices 3. SWPPPs A site -specific SWPPP shall be developed by each discharger and shall be submitted with the PRDs. 4. Risk Assessment All dischargers shall use the Risk Assessment procedure as describe in the General Permit Appendix 1. a. The Standard Risk Assessment includes utilization of the following: i. Receiving water Risk Assessment interactive map 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 3 Agreement No. 6574 ATTACHMENT B ii. EPA Rainfall Erosivity Factor Calculator Website iii. Sediment Risk interactive map iv. Sediment sensitive water bodies list b. The Site -Specific Risk Assessment includes the completion of the hand calculated R value Risk Calculator 5. Post -Construction Water Balance Calculator All dischargers subject to this requirement shall complete the Water Balance Calculator (in Appendix 2) in accordance with the instructions. 6. ATS Design Document and Certification All dischargers using ATS must submit electronically their system design (as well as any supporting documentation) and proof that the system was designed by a qualified ATS design professional (See Attachment F). To obtain coverage under the General Permit PRDs must be included and completed. If any of the required items are missing, the PRD submittal is considered incomplete and will be rejected. Upon receipt of a complete PRD submittal, the State Water Board will process the application package in the order received and assign a (WDID) number. Questions? If you have any questions on completing the PRDs please email stormwater waterboards.ca. ov or call (866) 563-3107. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 4 Agreement No. 6574 ATTACHMENT C ATTACHMENT C RISK LEVEL 1 REQUIREMENTS A. Effluent Standards [These requirements are the same as those in the General Permit order.] 1. Narrative — Risk Level 1 dischargers shall comply with the narrative effluent standards listed below: a. Storm water discharges and authorized non -storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. b. Dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non -conventional pollutants and BCT for conventional pollutants. 2. Numeric — Risk Level 1 dischargers are not subject to a numeric effluent standard. B. Good Site Management "Housekeeping" Risk Level 1 dischargers shall implement good site management (i.e., "housekeeping") measures for construction materials that could potentially be a threat to water quality if discharged. At a minimum, Risk Level 1 dischargers shall implement the following good housekeeping measures: a. Conduct an inventory of the products used and/or expected to be used and the end products that are produced and/or expected to be produced. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). b. Cover and berm loose stockpiled construction materials that are not actively being used (i.e. soil, spoils, aggregate, fly -ash, stucco, hydrated lime, etc.). 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 1 Agreement No. 6574 ATTACHMENT C c. Store chemicals in watertight containers (with appropriate secondary containment to prevent any spillage or leakage) or in a storage shed (completely enclosed). d. Minimize exposure of construction materials to precipitation. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). e. Implement BMPs to prevent the off -site tracking of loose construction and landscape materials. 2. Risk Level 1 dischargers shall implement good housekeeping measures for waste management, which, at a minimum, shall consist of the following: a. Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system. b. Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. c. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. d. Cover waste disposal containers at the end of every business day and during a rain event. e. Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. f. Contain and securely protect stockpiled waste material from wind and rain at all times unless actively being used. g. Implement procedures that effectively address hazardous and non- hazardous spills. h. Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require that: i. Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly; and 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 2 Agreement No. 6574 ATTACHMENT C ii. Appropriate spill response personnel are assigned and trained. i. Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 3. Risk Level 1 dischargers shall implement good housekeeping for vehicle storage and maintenance, which, at a minimum, shall consist of the following: a. Prevent oil, grease, or fuel to leak in to the ground, storm drains or surface waters. b. Place all equipment or vehicles, which are to be fueled, maintained and stored in a designated area fitted with appropriate BMPs. c. Clean leaks immediately and disposing of leaked materials properly. 4. Risk Level 1 dischargers shall implement good housekeeping for landscape materials, which, at a minimum, shall consist of the following: a. Contain stockpiled materials such as mulches and topsoil when they are not actively being used. b. Contain fertilizers and other landscape materials when they are not actively being used. c. Discontinue the application of any erodible landscape material within 2 days before a forecasted rain event or during periods of precipitation. d. Apply erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. e. Stack erodible landscape material on pallets and covering or storing such materials when not being used or applied. 5. Risk Level 1 dischargers shall conduct an assessment and create a list of potential pollutant sources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. This potential pollutant list shall be kept with the SWPPP and shall identify 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 3 Agreement No. 6574 ATTACHMENT C all non -visible pollutants which are known, or should be known, to occur on the construction site. At a minimum, when developing BMPs, Risk Level 1 dischargers shall do the following: a. Consider the quantity, physical characteristics (e.g., liquid, powder, solid), and locations of each potential pollutant source handled, produced, stored, recycled, or disposed of at the site. b. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. c. Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non -storm water discharges. This shall include an assessment of past spills or leaks, non -storm water discharges, and discharges from adjoining areas. d. Ensure retention of sampling, visual observation, and inspection records. e. Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. 6. Risk Level 1 dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to, sediment, nutrients, trash, metals, bacteria, oil and grease and organics. C. Non -Storm Water Management 1. Risk Level 1 dischargers shall implement measures to control all non - storm water discharges during construction. 2. Risk Level 1 dischargers shall wash vehicles in such a manner as to prevent non -storm water discharges to surface waters or MS4 drainage systems. 3. Risk Level 1 dischargers shall clean streets in such a manner as to prevent unauthorized non -storm water discharges from reaching surface water or MS4 drainage systems. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 4 Agreement No. 6574 ATTACHMENT C D. Erosion Control 1. Risk Level 1 dischargers shall implement effective wind erosion control. 2. Risk Level 1 dischargers shall provide effective soil cover for inactive' areas and all finished slopes, open space, utility backfill, and completed lots. 3. Risk Level 1 dischargers shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the discharger shall consider the use of plastic materials resistant to solar degradation. E. Sediment Controls Risk Level 1 dischargers shall establish and maintain effective perimeter controls and stabilize all construction entrances and exits to sufficiently control erosion and sediment discharges from the site. 2. On sites where sediment basins are to be used, Risk Level 1 dischargers shall, at minimum, design sediment basins according to the method provided in CASQA's Construction BMP Guidance Handbook. F. Run-on and Runoff Controls Risk Level 1 dischargers shall effectively manage all run-on, all runoff within the site and all runoff that discharges off the site. Run-on from off site shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations in this General Permit. G. Inspection, Maintenance and Repair Risk Level 1 dischargers shall ensure that all inspection, maintenance repair and sampling activities at the project location shall be performed or supervised by a Qualified SWPPP Practitioner (QSP) representing the discharger. The QSP may delegate any or all of these activities to an employee trained to do the task(s) appropriately, but shall ensure adequate deployment. 2. Risk Level 1 dischargers shall perform weekly inspections and observations, and at least once each 24-hour period during extended Inactive areas of construction are areas of construction activity that have been disturbed and are not scheduled to be re -disturbed for at least 14 days. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 5 Agreement No. 6574 ATTACHMENT C storm events, to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Inspectors shall be the QSP or be trained by the QSP. 3. Upon identifying failures or other shortcomings, as directed by the QSP, Risk Level 1 dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. 4. For each inspection required, Risk Level 1 dischargers shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format. 5. Risk Level 1 dischargers shall ensure that checklists shall remain onsite with the SWPPP and at a minimum, shall include: a. Inspection date and date the inspection report was written.. b. Weather information, including presence or absence of precipitation, estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm, and approximate amount of rainfall in inches. c. Site information, including stage of construction, activities completed, and approximate area of the site exposed. d. A description of any BMPs evaluated and any deficiencies noted, e. If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non -storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls, discharge points, downstream locations and any projected maintenance activities. f. Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. g. Any corrective actions required, including any necessary changes to the SWPPP and the associated implementation dates. h. Photographs taken during the inspection, if any, i. Inspector's name, title, and signature. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 6 Agreement No. 6574 ATTACHMENT C H. Rain Event Action Plan Not required for Risk Level 1 dischargers. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ Agreement No. 6574 ATTACHMENT C I. Risk Level 1 Monitoring and Reporting Requirements 1. Construction Site Monitoring Program Requirements a. Pursuant to Water Code Sections 13383 and 13267, all dischargers subject to this General Permit shall develop and implement a written site -specific Construction Site Monitoring Program (CSMP) in accordance with the requirements of this Section. The CSMP shall include all monitoring procedures and instructions, location maps, forms, and checklists as required in this section. The CSMP shall be developed prior to the commencement of construction activities, and revised as necessary to reflect project revisions. The CSMP shall be a part of the Storm Water Pollution Prevention Plan (SWPPP), included as an appendix or separate SWPPP chapter. b. Existing dischargers registered under the State Water Board Order No. 99-08-DWQ shall make and implement necessary revisions to their Monitoring Programs to reflect the changes in this General Permit in a timely manner, but no later than July 1, 2010. Existing dischargers shall continue to implement their existing Monitoring Programs in compliance with State Water Board Order No. 99-08- DWQ until the necessary revisions are completed according to the schedule above. c. When a change of ownership occurs for all or any portion of the construction site prior to completion or final stabilization, the new discharger shall comply with these requirements as of the date the ownership change occurs. 2. Objectives The CSMP shall be developed and implemented to address the following objectives: a. To demonstrate that the site is in compliance with the Discharge Prohibitions; 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 8 Agreement No. 6574 ATTACHMENT C b. To determine whether non -visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives; c. To determine whether immediate corrective actions, additional Best Management Practice (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non -storm water discharges; and d. To determine whether BMPs included in the SWPPP are effective in preventing or reducing pollutants in storm water discharges and authorized non -storm water discharges. 3. Risk Level 1 - Visual Monitoring (Inspection) Requirements for Qualifying Rain Events a. Risk Level 1 dischargers shall visually observe (inspect) storm water discharges at all discharge locations within two business days (48 hours) after each qualifying rain event. b. Risk Level 1 dischargers shall visually observe (inspect) the discharge of stored or contained storm water that is derived from and discharged subsequent to a qualifying rain event producing precipitation of/z inch or more at the time of discharge. Stored or contained storm water that will likely discharge after operating hours due to anticipated precipitation shall be observed prior to the discharge during operating hours. c. Risk Level 1 dischargers shall conduct visual observations (inspections) during business hours only. d. Risk Level 1 dischargers shall record the time, date and rain gauge reading of all qualifying rain events. e. Within 2 business days (48 hours) prior to each qualifying rain event, Risk Level 1 dischargers shall visually observe (inspect): i. All storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. If needed, the discharger shall implement appropriate corrective actions. All BMPs to identify whether they have been properly implemented in accordance with the SWPPP. If needed, the discharger shall implement appropriate corrective actions. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 9 Agreement No. 6574 ATTACHMENT C iii. Any storm water storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. f. For the visual observations (inspections) described in e.i and e.iii above, Risk Level 1 dischargers shall observe the presence or absence of floating and suspended materials, a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed pollutants. g. Within two business days (48 hours) after each qualifying rain event, Risk Level 1 dischargers shall conduct post rain event visual observations (inspections) to (1) identify whether BMPs were adequately designed, implemented, and effective, and (2) identify additional BMPs and revise the SWPPP accordingly. h. Risk Level 1 dischargers shall maintain on -site records of all visual observations (inspections), personnel performing the observations, observation dates, weather conditions, locations observed, and corrective actions taken in response to the observations. 4. Risk Level 1 — Visual Observation Exemptions a. Risk Level 1 dischargers shall be prepared to conduct visual observation (inspections) until the minimum requirements of Section 1.3 above are completed. Risk Level 1 dischargers are not required to conduct visual observation (inspections) under the following conditions: i. During dangerous weather conditions such as flooding and electrical storms. ii. Outside of scheduled site business hours. b. If no required visual observations (inspections) are collected due to these exceptions, Risk Level 1 dischargers shall include an explanation in their SWPPP and in the Annual Report documenting why the visual observations (inspections) were not conducted. 5. Risk Level 1 — Monitoring Methods Risk Level 1 dischargers shall include a description of the visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures in the CSMP. 6. Risk Level 1 — Non -Storm Water Discharge Monitoring Requirements 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 10 Agreement No. 6574 ATTACHMENT C a. Visual Monitoring Requirements: Risk Level 1 dischargers shall visually observe (inspect) each drainage area for the presence of (or indications of prior) unauthorized and authorized non -storm water discharges and their sources. ii. Risk Level 1 dischargers shall conduct one visual observation (inspection) quarterly in each of the following periods: January - March, April -June, July -September, and October -December. Visual observation (inspections) are only required during daylight hours (sunrise to sunset). iii. Risk Level 1 dischargers shall ensure that visual observations (inspections) document the presence or evidence of any non - storm water discharge (authorized or unauthorized), pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.), and source. Risk Level 1 dischargers shall maintain on -site records indicating the personnel performing the visual observation (inspections), the dates and approximate time each drainage area and non -storm water discharge was observed, and the response taken to eliminate unauthorized non -storm water discharges and to reduce or prevent pollutants from contacting non -storm water discharges. 7. Risk Level 1 — Non -Visible Pollutant Monitoring Requirements a. Risk Level 1 dischargers shall collect one or more samples during any breach, malfunction, leakage, or spill observed during a visual inspection which could result in the discharge of pollutants to surface waters that would not be visually detectable in storm water. b. Risk Level 1 dischargers shall ensure that water samples are large enough to characterize the site conditions. c. Risk Level 1 dischargers shall collect samples at all discharge locations that can be safely accessed. d. Risk Level 1 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. e. Risk Level 1 dischargers shall analyze samples for all non -visible pollutant parameters (if applicable) - parameters indicating the 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 11 Agreement No. 6574 ATTACHMENT C presence of pollutants identified in the pollutant source assessment required (Risk Level 1 dischargers shall modify their CSMPs to address these additional parameters in accordance with any updated SWPPP pollutant source assessment). f. Risk Level 1 dischargers shall collect a sample of storm water that has not come in contact with the disturbed soil or the materials stored or used on -site (uncontaminated sample) for comparison with the discharge sample. g. Risk Level 1 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis.2 h. Risk Level 1 dischargers shall keep all field /or analytical data in the SWPPP document. 8. Risk Level 1 — Particle Size Analysis for Project Risk Justification Risk Level 1 dischargers justifying an alternative project risk shall report a soil particle size analysis used to determine the RUSLE K- Factor. ASTM D-422 (Standard Test Method for Particle -Size Analysis of Soils), as revised, shall be used to determine the percentages of sand, very fine sand, silt, and clay on the site. 9. Risk Level 1 — Records Risk Level 1 dischargers shall retain records of all storm water monitoring information and copies of all reports (including Annual Reports) for a period of at least three years. Risk Level 1 dischargers shall retain all records on -site while construction is ongoing. These records include: a. The date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation. b. The individual(s) who performed the facility inspections, sampling, visual observation (inspections), and or measurements. c. The date and approximate time of analyses. d. The individual(s) who performed the analyses. 2 For laboratory analysis, all sampling, sample preservation, and analyses must be conducted according to test procedures under 40 CFR Part 136. Field discharge samples shall be collected and analyzed according to the specifications of the manufacturer of the sampling devices employed. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 12 Agreement No. 6574 ATTACHMENT C e. A summary of all analytical results from the last three years, the method detection limits and reporting units, and the analytical techniques or methods used. f. Rain gauge readings from site inspections. g. Quality assurance/quality control records and results. h. Non -storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records (see Sections 1.3 and 1.6 above). Visual observation and sample collection exception records (see Section 1.4 above). j. The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-2006-DWQ 13 Agreement No. 6574 ATTACHMENT D ATTACHMENT D RISK LEVEL 2 REQUIREMENTS A. Effluent Standards [These requirements are the same as those in the General Permit order.] 1. Narrative — Risk Level 2 dischargers shall comply with the narrative effluent standards listed below: a. Storm water discharges and authorized non -storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. b. Dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non -conventional pollutants and BCT for conventional pollutants. 2. Numeric — Risk level 2 dischargers are subject to a pH NAL of 6.5-8.5, and a turbidity NAL of 250 NTU. B. Good Site Management "Housekeeping" 1. Risk Level 2 dischargers shall implement good site management (i.e., "housekeeping") measures for construction materials that could potentially be a threat to water quality if discharged. At a minimum, Risk Level 2 dischargers shall implement the following good housekeeping measures: a. Conduct an inventory of the products used and/or expected to be used and the end products that are produced and/or expected to be produced. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). b. Cover and berm loose stockpiled construction materials that are not actively being used (i.e. soil, spoils, aggregate, fly -ash, stucco, hydrated lime, etc.). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 1 Agreement No. 6574 ATTACHMENT D c. Store chemicals in watertight containers (with appropriate secondary containment to prevent any spillage or leakage) or in a storage shed (completely enclosed). d. Minimize exposure of construction materials to precipitation. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). e. Implement BMPs to prevent the off -site tracking of loose construction and landscape materials. 2. Risk Level 2 dischargers shall implement good housekeeping measures for waste management, which, at a minimum, shall consist of the following: a. Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system, b. Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. c. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. d. Cover waste disposal containers at the end of every business day and during a rain event. e. Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. f. Contain and securely protect stockpiled waste material from wind and rain at all times unless actively being used. g. Implement procedures that effectively address hazardous and non- hazardous spills. h. Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require: i.. Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 2 Agreement No. 6574 ATTACHMENT D ii. Appropriate spill response personnel are assigned and trained. i. Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 3. Risk Level 2 dischargers shall implement good housekeeping for vehicle storage and maintenance, which, at a minimum, shall consist of the following: a. Prevent oil, grease, or fuel to leak in to the ground, storm drains or surface waters. b. Place all equipment or vehicles, which are to be fueled, maintained and stored in a designated area fitted with appropriate BMPs. c. Clean leaks immediately and disposing of leaked materials properly. 4. Risk Level 2 dischargers shall implement good housekeeping for landscape materials, which, at a minimum, shall consist of the following: a. Contain stockpiled materials such as mulches and topsoil when they are not actively being used. b. Contain all fertilizers and other landscape materials when they are not actively being used. c. Discontinue the application of any erodible landscape material within 2 days before a forecasted rain event or during periods of precipitation. d. Apply erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. e. Stack erodible landscape material on pallets and covering or storing such materials when not being used or applied. 5. Risk Level 2 dischargers shall conduct an assessment and create a list of potential pollutant sources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. This potential pollutant list shall be kept with the SWPPP and shall identify 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 3 Agreement No. 6574 ATTACHMENT D all non -visible pollutants which are known, or should be known, to occur on the construction site. At a minimum, when developing BMPs, Risk Level 2 dischargers shall do the following: a. Consider the quantity, physical characteristics (e.g., liquid, powder, solid), and locations of each potential pollutant source handled, produced, stored, recycled, or disposed of at the site. b. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. c. Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non -storm water discharges. This shall include an assessment of past spills or leaks, non -storm water discharges, and discharges from adjoining areas. d. Ensure retention of sampling, visual observation, and inspection records. e. Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. 6. Risk Level 2 dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to, sediment, nutrients, trash, metals, bacteria, oil and grease and organics. 7. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall document all housekeeping BMPs in the SWPPP and REAP(s) in accordance with the nature and phase of the construction project. Construction phases at traditional land development projects include Grading and Land Development Phase, Streets and Utilities, or Vertical Construction for traditional land development projects. C. Non -Storm Water Management 1. Risk Level 2 dischargers shall implement measures to control all non - storm water discharges during construction. 2. Risk Level 2 dischargers shall wash vehicles in such a manner as to prevent non -storm water discharges to surface waters or MS4 drainage systems. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 4 Agreement No. 6574 ATTACHMENT D 3. Risk Level 2 dischargers shall clean streets in such a manner as to prevent unauthorized non -storm water discharges from reaching surface water or MS4 drainage systems. D. Erosion Control 1. Risk Level 2 dischargers shall implement effective wind erosion control. 2. Risk Level 2 dischargers shall provide effective soil cover for inactive' areas and all finished slopes, open space, utility backfill, and completed lots. 3. Risk Level 2 dischargers shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the discharger shall consider the use of plastic materials resistant to solar degradation. E. Sediment Controls 1. Risk Level 2 dischargers shall establish and maintain effective perimeter controls and stabilize all construction entrances and exits to sufficiently control erosion and sediment discharges from the site. 2. On sites where sediment basins are to be used, Risk Level 2 dischargers shall, at minimum, design sediment basins according to the method provided in CASQA's Construction BMP Guidance Handbook. 3. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall implement appropriate erosion control BMPs (runoff control and soil stabilization) in conjunction with sediment control BMPs for areas under active 2 construction. 4. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall apply linear sediment controls along the toe of the slope, face of the slope, and at the grade breaks of exposed slopes to comply with sheet flow lengths3 in accordance with Table 1. 1 Inactive areas of construction are areas of construction activity that have been disturbed and are not scheduled to be re -disturbed for at least 14 days. 2 Active areas of construction are areas undergoing land surface disturbance. This includes construction activity during the preliminary stage, mass grading stage, streets and utilities stage and the vertical construction stage. 3 Sheet flow length is the length that shallow, low velocity flow travels across a site. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 5 Agreement No. 6574 ATTACHMENT D Table_1 - Critical Slope/Sheet Flow Lengh Combinations Slope Percentage Sheet flow length not to exceed _..._. 0-2.._ _ w...... ..._-..__.:.. 5% 20 feet ....................................� 25-50%...........������.....������.__,,,,, 15 feet_...._��.........�...e..� ��....��.........._,.....6. �.�.� .�.�.._... �_�..�.�.... � ��...............� Over 50% 10 feet 5. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall ensure that construction activity traffic to and from the project is limited to entrances and exits that employ effective controls to prevent offsite tracking of sediment. 6. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall ensure that all storm drain inlets and perimeter controls, runoff control BMPs, and pollutant controls at entrances and exits (e.g. tire washoff locations) are maintained and protected from activities that reduce their effectiveness. 7. Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall inspect on a daily basis all immediate access roads daily. At a minimum daily (when necessary) and prior to any rain event, the discharger shall remove any sediment or other construction activity - related materials that are deposited on the roads (by vacuuming or sweeping). F. Run-on and Run-off Controls Risk Level 2 dischargers shall effectively manage all run-on, all runoff within the site and all runoff that discharges off the site. Run-on from off site shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations in this General Permit. G. Inspection, Maintenance and Repair 1. Risk Level 2 dischargers shall ensure that all inspection, maintenance repair and sampling activities at the project location shall be performed or supervised by a Qualified SWPPP Practitioner (QSP) representing the discharger. The QSP may delegate any or all of these activities to an employee appropriately trained to do the task(s). 2. Risk Level 2 dischargers shall perform weekly inspections and observations, and at least once each 24-hour period during extended storm events, to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Inspectors shall be the QSP or be trained by the QSP. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 6 Agreement No. 6574 ATTACHMENT D 3. Upon identifying failures or other shortcomings, as directed by the QSP, Risk Level 2 dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. 4. For each inspection required, Risk Level 2 dischargers shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format. 5. Risk Level 2 dischargers shall ensure that checklists shall remain onsite with the SWPPP and at a minimum, shall include: a. Inspection date and date the inspection report was written. b. Weather information, including presence or absence of precipitation, estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm, and approximate amount of rainfall in inches. c. Site information, including stage of construction, activities completed, and approximate area of the site exposed. d. A description of any BMPs evaluated and any deficiencies noted. e. If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non -storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls, discharge points, downstream locations and any projected maintenance activities. f. Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. g. Any corrective actions required, including any necessary changes to the SWPPP and the associated implementation dates. h. Photographs taken during the inspection, if any. i. Inspector's name, title, and signature. H. Rain Event Action Plan 1. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP develop a Rain Event Action Plan (REAP) 48 hours prior to any 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 7 Agreement No. 6574 ATTACHMENT D likely precipitation event. A likely precipitation event is any weather pattern that is forecast to have a 50% or greater probability of producing precipitation in the project area. The discharger shall ensure a QSP obtain a printed copy of precipitation forecast information from the National Weather Service Forecast Office (e.g., by entering the zip code of the project's location at htt ://www.srhi.noaa, ov/forecast). 2. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP develop the REAPs for all phases of construction (i.e., Grading and Land Development, Streets and Utilities, Vertical Construction, Final Landscaping and Site Stabilization). 3. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP ensure that the REAP include, at a minimum, the following site information: a. Site Address b. Calculated Risk Level (2 or 3) c. Site Storm Water Manager Information including the name, company, and 24-hour emergency telephone number d. Erosion and Sediment Control Provider information including the name, company, and 24-hour emergency telephone number e. Storm Water Sampling Agent information including the name, company, and 24-hour emergency telephone number 4. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP include in the REAP, at a minimum, the following project phase information: a. Activities associated with each construction phase b. Trades active on the construction site during each construction phase c. Trade contractor information d. Suggested actions for each project phase 5. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP develop additional REAPs for project sites where construction activities are indefinitely halted or postponed (Inactive Construction). At a minimum, Inactive Construction REAPs must include: a. Site Address b. Calculated Risk Level (2 or 3) c. Site Storm Water Manager Information including the name, company, and 24-hour emergency telephone number 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 8 Agreement No. 6574 ATTACHMENT D d. Erosion and Sediment Control Provider information including the name, company, and 24-hour emergency telephone number e. Storm Water Sampling Agent information including the name, company, and 24-hour emergency telephone number f. Trades active on site during Inactive Construction g. Trade contractor information h. Suggested actions for inactive construction sites 6. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP begin implementation and make the REAP available onsite no later than 24 hours prior to the likely precipitation event. 7. Additional Risk Level 2 Requirement: The discharger shall ensure a QSP maintain onsite a paper copy of each REAP onsite in compliance with the record retention requirements of the Special Provisions in this General Permit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 9 Agreement No. 6574 ATTACHMENT D I. Risk Level 2 Monitoring and Reporting Requirements Table 2- Sum 1. Construction Site Monitoring Program Requirements a. Pursuant to Water Code Sections 13383 and 13267, all dischargers subject to this General Permit shall develop and implement a written site -specific Construction Site Monitoring Program (CSMP) in accordance with the requirements of this Section. The CSMP shall include all monitoring procedures and instructions, location maps, forms, and checklists as required in this section. The CSMP shall be developed prior to the commencement of construction activities, and revised as necessary to reflect project revisions. The CSMP shall be a part of the Storm Water Pollution Prevention Plan (SWPPP), included as an appendix or separate SWPPP chapter. b. Existing dischargers registered under the State Water Board Order No. 99-08-DWQ shall make and implement necessary revisions to their Monitoring Program to reflect the changes in this General Permit in a timely manner, but no later than July 1, 2010. Existing dischargers shall continue to implement their existing Monitoring Programs in compliance with State Water Board Order No. 99-08- DWQ until the necessary revisions are completed according to the schedule above. c. When a change of ownership occurs for all or any portion of the construction site prior to completion or final stabilization, the new discharger shall comply with these requirements as of the date the ownership change occurs. 2. Objectives The CSMP shall be developed and implemented to address the following objectives: a. To demonstrate that the site is in compliance with the Discharge Prohibitions and applicable Numeric Action Levels (NALs). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 10 Agreement No. 6574 ATTACHMENT D b. To determine whether non -visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives. c. To determine whether immediate corrective actions, additional Best Management Practice (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non -storm water discharges. d. To determine whether BMPs included in the SWPPP/Rain Event Action Plan (REAP) are effective in preventing or reducing pollutants in storm water discharges and authorized non -storm water discharges. 3. Risk Level 2 — Visual Monitoring (Inspection) Requirements for Qualifying Rain Events a. Risk Level 2 dischargers shall visually observe (inspect) storm water discharges at all discharge locations within two business days (48 hours) after each qualifying rain event. b. Risk Level 2 dischargers shall visually observe (inspect) the discharge of stored or contained storm water that is derived from and discharged subsequent to a qualifying rain event producing precipitation of inch or more at the time of discharge. Stored or contained storm water that will likely discharge after operating hours due to anticipated precipitation shall be observed prior to the discharge during operating hours. c. Risk Level 2 dischargers shall conduct visual observations (inspections) during business hours only. d. Risk Level 2 dischargers shall record the time, date and rain gauge reading of all qualifying rain events. e. Within 2 business days (48 hours) prior to each qualifying rain event, Risk Level 2 dischargers shall visually observe (inspect) i, all storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. If needed, the discharger shall implement appropriate corrective actions. all BMPs to identify whether they have been properly implemented in accordance with the SWPPP/REAP. If needed, the discharger shall implement appropriate corrective actions. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 11 Agreement No. 6574 ATTACHMENT D iii. any storm water storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. For the visual observations (inspections) described in c.i and c.iii above, Risk Level 2 dischargers shall observe the presence or absence of floating and suspended materials, a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed pollutants. g. Within two business days (48 hours) after each qualifying rain event, Risk Level 2 dischargers shall conduct post rain event visual observations (inspections) to (1) identify whether BMPs were adequately designed, implemented, and effective, and (2) identify additional BMPs and revise the SWPPP accordingly. h. Risk Level 2 dischargers shall maintain on -site records of all visual observations (inspections), personnel performing the observations, observation dates, weather conditions, locations observed, and corrective actions taken in response to the observations. 4. Risk Level 2 — Water Quality Sampling and Analysis a. Risk Level 2 dischargers shall collect storm water grab samples from sampling locations, as defined in Section 1.5. The storm water grab sample(s) obtained shall be representative of the flow and characteristics of the discharge. b. At minimum, Risk Level 2 dischargers shall collect 3 samples per day of the qualifying event. c. Risk Level 2 dischargers shall ensure that the grab samples collected of stored or contained storm water are from discharges subsequent to a qualifying rain event (producing precipitation of '/z inch or more at the time of discharge). Storm Water Effluent Monitoring Re uirements d. Risk Level 2 dischargers shall analyze their effluent samples for: i. pH and turbidity. ii. Any additional parameters for which monitoring is required by the Regional Water Board. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 12 Agreement No. 6574 ATTACHMENT D 5. Risk Level 2 — Storm Water Discharge Water Quality Sampling Locations a. Risk Level 2 dischargers shall perform sampling and analysis of storm water discharges to characterize discharges associated with construction activity from the entire project disturbed area. b. Risk Level 2 dischargers shall collect effluent samples at all discharge points where storm water is discharged off -site. c. Risk Level 2 dischargers shall ensure that storm water discharge collected and observed represent4 the effluent in each drainage area based on visual observation of the water and upstream conditions. d. Risk Level 2 dischargers shall monitor and report site run-on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. e. Risk Level 2 dischargers who deploy an ATS on their site, or a portion on their site, shall collect ATS effluent samples and measurements from the discharge pipe or another location representative of the nature of the discharge. f. Risk Level 2 dischargers shall select analytical test methods from the list provided in Table 3 below. g. All storm water sample collection preservation and handling shall be conducted in accordance with Section 1.7 "Storm Water Sample Collection and Handling Instructions" below. 6. Risk Level 2 — Visual Observation and Sample Collection Exemptions a. Risk Level 2 dischargers shall be prepared to collect samples and conduct visual observation (inspections) until the minimum requirements of Sections 1.3 and 1.4 above are completed. Risk Level 2 dischargers are not required to physically collect samples or conduct visual observation (inspections) under the following conditions: 4 For example, if there has been concrete work recently in an area, or drywall scrap is exposed to the rain, a pH sample shall be taken of drainage from the relevant work area. Similarly, if sediment laden water is flowing through some parts of a silt fence, samples shall be taken of the sediment -laden water even if most water flowing through the fence is clear. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 13 Agreement No. 6574 ATTACHMENT D i. During dangerous weather conditions such as flooding and electrical storms. ii. Outside of scheduled site business hours. b. If no required samples or visual observation (inspections) are collected due to these exceptions, Risk Level 2 dischargers shall include an explanation in their SWPPP and in the Annual Report documenting why the sampling or visual observation (inspections) were not conducted. 7. Risk Level 2 — Storm Water Sample Collection and Handling Instructions a. Risk Level 2 dischargers shall refer to Table 3 below for test methods, detection limits, and reporting units. b. Risk Level 2 dischargers shall ensure that testing laboratories will receive samples within 48 hours of the physical sampling (unless otherwise required by the laboratory), and shall use only the sample containers provided by the laboratory to collect and store samples. c. Risk Level 2 dischargers shall designate and train personnel to collect, maintain, and ship samples in accordance with the Surface Water Ambient Monitoring Program's (SWAMP) 2008 Quality Assurance Program Plan (QAPrP).5 8. Risk Level 2 — Monitoring Methods a. Risk Level 2 dischargers shall include a description of the following items in the CSMP: i. Visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures. ii. Sampling locations, and sample collection and handling procedures. This shall include detailed procedures for sample collection, storage, preservation, and shipping to the testing lab to assure that consistent quality control and quality assurance is maintained. Dischargers shall attach to the monitoring program 5 Additional information regarding SWAMP's QAPrP can be found at htt :llw rur.waterboards.ca, ov/w+at r issuest ro rams swwam !. QAPrP:http://www.waterboards.ca.covlwater i'ssuesl ro ramsl wvam docs/ a fswwam a master090 108a.odf. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 14 Agreement No. 6574 ATTACHMENT D an example Chain of Custody form used when handling and shipping samples. iii. Identification of the analytical methods and related method detection limits (if applicable) for each parameter required in Section 1.4 above. b. Risk Level 2 dischargers shall ensure that all sampling and sample preservation are in accordance with the current edition of "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association). All monitoring instruments and equipment (including a discharger's own field instruments for measuring pH and turbidity) should be calibrated and maintained in accordance with manufacturers' specifications to ensure accurate measurements. Risk Level 2 dischargers shall ensure that all laboratory analyses are conducted according to test procedures under 40 CFR Part 136, unless other test procedures have been specified in this General Permit or by the Regional Water Board. With the exception of field analysis conducted by the discharger for turbidity and pH, all analyses should be sent to and conducted at a laboratory certified for such analyses by the State Department of Health Services. Risk Level 2 dischargers shall conduct their own field analysis of pH and may conduct their own field analysis of turbidity if the discharger has sufficient capability (qualified and trained employees, properly calibrated and maintained field instruments, etc.) to adequately perform the field analysis. 9. Risk Level 2 — Analytical Methods a. Risk Level 2 dischargers shall refer to Table 3 below for test methods, detection limits, and reporting units. b. pH: Risk Level 2 dischargers shall perform pH analysis on -site with a calibrated pH meter or a pH test kit. Risk Level 2 dischargers shall record pH monitoring results on paper and retain these records in accordance with Section 1.14, below. c. Turbidity: Risk Level 2 dischargers shall perform turbidity analysis using a calibrated turbidity meter (turbidimeter), either on -site or at an accredited lab. Acceptable test methods include Standard Method 2130 or USEPA Method 180.1. The results will be recorded in the site log book in Nephelometric Turbidity Units (NTU). 10. Risk Level 2 - Non -Storm Water Discharge Monitoring Requirements 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 15 Agreement No. 6574 ATTACHMENT D a. Visual Monitoring Requirements: i, Risk Level 2 dischargers shall visually observe (inspect) each drainage area for the presence of (or indications of prior) unauthorized and authorized non -storm water discharges and their sources. ii. Risk Level 2 dischargers shall conduct one visual observation (inspection) quarterly in each of the following periods: January - March, April -June, July -September, and October -December. Visual observation (inspections) are only required during daylight hours (sunrise to sunset). iii. Risk Level 2 dischargers shall ensure that visual observations (inspections) document the presence or evidence of any non - storm water discharge (authorized or unauthorized), pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.), and source. Risk Level 2 dischargers shall maintain on -site records indicating the personnel performing the visual observation (inspections), the dates and approximate time each drainage area and non -storm water discharge was observed, and the response taken to eliminate unauthorized non -storm water discharges and to reduce or prevent pollutants from contacting non -storm water discharges. b. Effluent Sampling Locations: i. Risk Level 2 dischargers shall sample effluent at all discharge points where non -storm water and/or authorized non -storm water is discharged off -site. ii. Risk Level 2 dischargers shall send all non -storm water sample analyses to a laboratory certified for such analyses by the State Department of Health Services. iii. Risk Level 2 dischargers shall monitor and report run-on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. 11. Risk Level 2 — Non -Visible Pollutant Monitoring Requirements a. Risk Level 2 dischargers shall collect one or more samples during any breach, malfunction, leakage, or spill observed during a visual 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 16 Agreement No. 6574 ATTACHMENT D inspection which could result in the discharge of pollutants to surface waters that would not be visually detectable in storm water. b. Risk Level 2 dischargers shall ensure that water samples are large enough to characterize the site conditions. c. Risk Level 2 dischargers shall collect samples at all discharge locations that can be safely accessed. d. Risk Level 2 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. e. Risk Level 2 dischargers shall analyze samples for all non -visible pollutant parameters (if applicable) - parameters indicating the presence of pollutants identified in the pollutant source assessment required (Risk Level 2 dischargers shall modify their CSMPs to address these additional parameters in accordance with any updated SWPPP pollutant source assessment). f. Risk Level 2 dischargers shall collect a sample of storm water that has not come in contact with the disturbed soil or the materials stored or used on -site (uncontaminated sample) for comparison with the discharge sample. g. Risk Level 2 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis.s h. Risk Level 2 dischargers shall keep all field /or analytical data in the SWPPP document. 12. Risk Level 2 — Watershed Monitoring Option Risk Level 2 dischargers who are part of a qualified regional watershed -based monitoring program may be eligible for relief from the requirements in Sections 1.5. The Regional Water Board may approve proposals to substitute an acceptable watershed -based monitoring program by determining if the watershed -based monitoring program will provide substantially similar monitoring information in evaluating discharger compliance with the requirements of this General Permit. 6 For laboratory analysis, all sampling, sample preservation, and analyses must be conducted according to test procedures under 40 CFR Part 136. Field discharge samples shall be collected and analyzed according to the specifications of the manufacturer of the sampling devices employed. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 17 Agreement No. 6574 ATTACHMENT D 13. Risk Level 2 — Particle Size Analysis for Project Risk Justification Risk Level 2 dischargers justifying an alternative project risk shall report a soil particle size analysis used to determine the RUSLE K-Factor. ASTM D-422 (Standard Test Method for Particle -Size Analysis of Soils), as revised, shall be used to determine the percentages of sand, very fine sand, silt, and clay on the site. 14. Risk Level 2 — Records Risk Level 2 dischargers shall retain records of all storm water monitoring information and copies of all reports (including Annual Reports) for a period of at least three years. Risk Level 2 dischargers shall retain all records on -site while construction is ongoing. These records include: a. The date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation. b. The individual(s) who performed the facility inspections, sampling, visual observation (inspections), and or measurements. c. The date and approximate time of analyses. d. The individual(s) who performed the analyses. e. A summary of all analytical results from the last three years, the method detection limits and reporting units, the analytical techniques or methods used, and the chain of custody forms. f. Rain gauge readings from site inspections; g. Quality assurance/quality control records and results. h. Non -storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records (see Sections 1.3 and 1.10 above). i. Visual observation and sample collection exception records (see Section 1.6 above). j. The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 18 Agreement No. 6574 ATTACHMENT D 15. Risk Level 2 — NAL Exceedance Report a. In the event that any effluent sample exceeds an applicable NAL, Risk Level 2 dischargers shall electronically submit all storm event sampling results to the State Water Board no later than 10 days after the conclusion of the storm event. The Regional Boards have the authority to require the submittal of an NAL Exceedance Report. b. Risk Level 2 dischargers shall certify each NAL Exceedance Report in accordance with the Special Provisions for Construction Activity. c. Risk Level 2 dischargers shall retain an electronic or paper copy of each NAL Exceedance Report for a minimum of three years after the date the annual report is filed. d. Risk Level 2 dischargers shall include in the NAL Exceedance Report: i. The analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit"). The date, place, time of sampling, visual observation (inspections), and/or measurements, including precipitation. iii. A description of the current BMPs associated with the effluent sample that exceeded the NAL and the proposed corrective actions taken. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 19 Agreement No. 6574 Uc Un (DCO n n � z QQ Q zz o z L L LC% N O N H H = z z a C) `- N U N N y N 0 co �! N U) N U > L � L J L Y V J Y V Q O N �_0 �0 �0 o L U N N 2 � C N O N 00 .2.- a) N i (O a Q L N N f6 O a C O N LL c.0 a .5 W c0 3 a .6 Q ~ Agreement No. 6574 ATTACHMENT E ATTACHMENT E RISK LEVEL 3 REQUIREMENTS A. Effluent Standards [These requirements are the same as those in the General Permit order.] 1. Narrative — Risk Level 3 dischargers shall comply with the narrative effluent standards listed below: a. Storm water discharges and authorized non -storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. b. Dischargers shall minimize or prevent pollutants in storm water discharges and authorized non -storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non -conventional pollutants and BCT for conventional pollutants. 2. Numeric —Risk Level 3 dischargers are subject to a pH NAL of 6.5-8.5, and a turbidity NAL of 250 NTU. B. Good Site Management "Housekeeping" 1. Risk Level 3 dischargers shall implement good site management (i.e., "housekeeping") measures for construction materials that could potentially be a threat to water quality if discharged. At a minimum, Risk Level 3 dischargers shall implement the following good housekeeping measures: a. Conduct an inventory of the products used and/or expected to be used and the end products that are produced and/or expected to be produced. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). b. Cover and berm loose stockpiled construction materials that are not actively being used (i.e. soil, spoils, aggregate, fly -ash, stucco, hydrated lime, etc.). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 ATTACHMENT E c. Store chemicals in watertight containers (with appropriate secondary containment to prevent any spillage or leakage) or in a storage shed (completely enclosed). d. Minimize exposure of construction materials to precipitation. This does not include materials and equipment that are designed to be outdoors and exposed to environmental conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). e. Implement BMPs to prevent the off -site tracking of loose construction and landscape materials. 2. Risk Level 3 dischargers shall implement good housekeeping measures for waste management, which, at a minimum, shall consist of the following: a. Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system. b. Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. c. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. d. Cover waste disposal containers at the end of every business day and during a rain event. e. Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. f. Contain and securely protecting stockpiled waste material from wind and rain at all times unless actively being used. g. Implement procedures that effectively address hazardous and non- hazardous spills. h. Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require that: i. Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly; and 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 ATTACHMENT E ii. Appropriate spill response personnel are assigned and trained. i. Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 3. Risk Level 3 dischargers shall implement good housekeeping for vehicle storage and maintenance, which, at a minimum, shall consist of the following: a. Prevent oil, grease, or fuel to leak in to the ground, storm drains or surface waters. b. Place all equipment or vehicles, which are to be fueled, maintained and stored in a designated area fitted with appropriate BMPs. c. Clean leaks immediately and disposing of leaked materials properly. 4. Risk Level 3 dischargers shall implement good housekeeping for landscape materials, which, at a minimum, shall consist of the following: a. Contain stockpiled materials such as mulches and topsoil when they are not actively being used. b. Contain fertilizers and other landscape materials when they are not actively being used. c. Discontinuing the application of any erodible landscape material within 2 days before a forecasted rain event or during periods of precipitation. d. Applying erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. e. Stacking erodible landscape material on pallets and covering or storing such materials when not being used or applied. 5. Risk Level 3 dischargers shall conduct an assessment and create a list of potential pollutant sources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. This potential pollutant list shall be kept with the SWPPP and shall identify 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 ATTACHMENT E all non -visible pollutants which are known, or should be known, to occur on the construction site. At a minimum, when developing BMPs, Risk Level 3 dischargers shall do the following: a. Consider the quantity, physical characteristics (e.g., liquid, powder, solid), and locations of each potential pollutant source handled, produced, stored, recycled, or disposed of at the site. b. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. c. Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non -storm water discharges, This shall include an assessment of past spills or leaks, non -storm water discharges, and discharges from adjoining areas. d. Ensure retention of sampling, visual observation, and inspection records. e. Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non -storm water discharges. 6. Risk Level 3 dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to, sediment, nutrients, trash, metals, bacteria, oil and grease and organics. 7. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall document all housekeeping BMPs in the SWPPP and REAP(s) in accordance with the nature and phase of the construction project. Construction phases at traditional land development projects include Grading and Land Development Phase, Streets and Utilities, or Vertical Construction for traditional land development projects. C. Non -Storm Water Management 1. Risk Level 3 dischargers shall implement measures to control all non - storm water discharges during construction. 2. Risk Level 3 dischargers shall wash vehicles in such a manner as to prevent non -storm water discharges to surface waters or MS4 drainage systems. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 4 Agreement No. 6574 ATTACHMENT E 3. Risk Level 3 dischargers shall clean streets in such a manner as to prevent unauthorized non -storm water discharges from reaching surface water or MS4 drainage systems. D. Erosion Control 1. Risk Level 3 dischargers shall implement effective wind erosion control. 2. Risk Level 3 dischargers shall provide effective soil cover for inactive' areas and all finished slopes, open space, utility backfill, and completed lots. 3. Dischargers shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the discharger shall consider the use of plastic materials resistant to solar degradation. E. Sediment Controls 1. Risk Level 3 dischargers shall establish and maintain effective perimeter controls and stabilize all construction entrances and exits to sufficiently control erosion and sediment discharges from the site. 2. On sites where sediment basins are to be used, Risk Level 3 dischargers shall, at minimum, design sediment basins according to the method provided in CASQA's Construction BMP Guidance Handbook. 3. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall implement appropriate erosion control BMPs (runoff control and soil stabiNization) in conjunction with sediment control BMPs for areas under active 2 construction. 4. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall apply linear sediment controls along the toe of the slope, face of the slope, and at the grade breaks of exposed slopes to comply with sheet flow lengths3 in accordance with Table 1. 1 Inactive areas of construction are areas of construction activity that have been disturbed and are not scheduled to be re -disturbed for at least 14 days. 2 Active areas of construction are areas undergoing land surface disturbance. This includes construction activity during the preliminary stage, mass grading stage, streets and utilities stage and the vertical construction stage 3 Sheet flow length is the length that shallow, low velocity flow travels across a site. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 5 Agreement No. 6574 ATTACHMENT E Table 1 -Critical SIo Shaeet Flow Len th Combinations Slope Percentage m . Sheet flow length notµ ITITww _ to exceed m 0-25% 20 feet _. et Over 50 % ......�....�.�........_. ...m, �...�......�..�.�....� 10 feet 5. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall ensure that construction activity traffic to and from the project is limited to entrances and exits that employ effective controls to prevent offsite tracking of sediment. 6. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall ensure that all storm drain inlets and -perimeter controls, runoff control BMPs, and pollutant controls at entrances and exits (e.g. tire washoff locations) are maintained and protected from activities that reduce their effectiveness. 7. Additional Risk Level 3 Requirement: Risk Level 3 dischargers shall inspect on a daily basis all immediate access roads daily. At a minimum daily (when necessary) and prior to any rain event, the discharger shall remove any sediment or other construction activity - related materials that are deposited on the roads (by vacuuming or sweeping). 8. Additional Risk Level 3 Requirement: The Regional Water Board may require Risk Level 3 dischargers to implement additional site - specific sediment control requirements if the implementation of the other requirements in this section are not adequately protecting the receiving waters. F. Run-on and Run-off Controls Risk Level 3 dischargers shall effectively manage all run-on, all runoff within the site and all runoff that discharges off the site. Run-on from off site shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations in this General Permit. G. Inspection, Maintenance and Repair 1. Risk Level 3 dischargers shall ensure that all inspection, maintenance repair and sampling activities at the project location shall be performed or supervised by a Qualified SWPPP Practitioner (QSP) representing the discharger. The QSP may delegate any or all of these activities to an employee appropriately trained to do the task(s). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 6 Agreement No. 6574 ATTACHMENT E 2. Risk Level 3 dischargers shall perform weekly inspections and observations, and at least once each 24-hour period during extended storm events, to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Inspectors shall be the QSP or be trained by the QSP. 3. Upon identifying failures or other shortcomings, as directed by the QSP, Risk Level 3 dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. 4. For each inspection required, Risk Level 3 dischargers shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format. 5. Risk Level 3 dischargers shall ensure that checklists shall remain onsite with the SWPPP and at a minimum, shall include: a. Inspection date and date the inspection report was written. b. Weather information, including presence or absence of precipitation, estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm, and approximate amount of rainfall in inches. c. Site information, including stage of construction, activities completed, and approximate area of the site exposed. d. A description of any BMPs evaluated and any deficiencies noted.. e. If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non -storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls, discharge points, downstream locations and any projected maintenance activities. f. Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. g. Any corrective actions required, including any necessary changes to the SWPPP and the associated implementation dates. h. Photographs taken during the inspection, if any. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 7 Agreement No. 6574 ATTACHMENT E i. Inspector's name, title, and signature. H. Rain Event Action Plan Additional Risk Level 3 Requirement: The discharger shall ensure a QSP develop a Rain Event Action Plan (REAP) 48 hours prior to any likely precipitation event. A likely precipitation event is any weather pattern that is forecast to have a 50% or greater probability of producing precipitation in the project area. The QSP shall obtain a printed copy of precipitation forecast information from the National Weather Service Forecast Office (e.g., by entering the zip code of the project's location at hftp:�//www.srh.noaa,gov,/forecast). 2. Additional Risk Level 3 Requirement: The discharger shall ensure a QSP develop the REAPs for all phases of construction (i.e., Grading and Land Development, Streets and Utilities, Vertical Construction, Final Landscaping and Site Stabilization). 3. Additional Risk Level 3 Requirement: The discharger shall ensure a QSP ensure that the REAP include, at a minimum, the following site information: a. Site Address. b. Calculated Risk Level (2 or 3). c. Site Storm Water Manager Information including the name, company, and 24-hour emergency telephone number. d. Erosion and Sediment Control Provider information including the name, company, and 24-hour emergency telephone number. e. Storm Water Sampling Agent information including the name, company, and 24-hour emergency telephone number. 4. Additional Risk Level 3 Requirement: The QSP shall include in the REAP, at a minimum, the following project phase information: a. Activities associated with each construction phase. b. Trades active on the construction site during each construction phase. c. Trade contractor information. d. Suggested actions for each project phase. 5. Additional Risk Level 3 Requirement: The QSP shall develop additional REAPs for project sites where construction activities are indefinitely halted or postponed (Inactive Construction). At a minimum, Inactive Construction REAPs must include: 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 8 Agreement No. 6574 ATTACHMENT E a. Site Address. b. Calculated Risk Level (2 or 3). c. Site Storm Water Manager Information including the name, company, and 24-hour emergency telephone number. d. Erosion and Sediment Control Provider information including the name, company, and 24-hour emergency telephone number. e. Storm Water Sampling Agent information including the name, company, and 24-hour emergency telephone number. f. Trades active on site during Inactive Construction. g. Trade contractor information. h. Suggested actions for inactive construction sites. 6. Additional Risk Level 3 Requirement: The discharger shall ensure a QSP begin implementation and make the REAP available onsite no later than 24 hours prior to the likely precipitation event. 7. Additional Risk Level 3 Requirement: The discharger shall ensure a QSP maintain onsite a paper copy of each REAP onsite in compliance with the record retention requirements of the Special Provisions in this General Permit. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 9 Agreement No. 6574 ATTACHMENT E I. Risk Level 3 Monitoring and Reporting Requirements 1. Construction Site Monitoring Program Requirements a. Pursuant to Water Code Sections 13383 and 13267, all dischargers subject to this General Permit shall develop and implement a written site -specific Construction Site Monitoring Program (CSMP) in accordance with the requirements of this Section. The CSMP shall include all monitoring procedures and instructions, location maps, forms, and checklists as required in this section. The CSMP shall be developed prior to the commencement of construction activities, and revised as necessary to reflect project revisions. The CSMP shall be a part of the Storm Water Pollution Prevention Plan (SWPPP), included as an appendix or separate SWPPP chapter. b. Existing dischargers registered under the State Water Board Order No. 99-08-DWQ shall make and implement necessary revisions to their Monitoring Program to reflect the changes in this General Permit in a timely manner, but no later than July 1, 2010. Existing dischargers shall continue to implement their existing Monitoring Program in compliance with State Water Board Order No. 99-08- DWQ until the necessary revisions are completed according to the schedule above. c. When a change of ownership occurs for all or any portion of the construction site prior to completion or final stabilization, the new discharger shall comply with these requirements as of the date the ownership change occurs. 2. Objectives The CSMP shall be developed and implemented to address the following objectives: 4 When receiving water monitoring trigger is exceeded 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 10 Agreement No. 6574 ATTACHMENT E a. To demonstrate that the site is in compliance with the Discharge Prohibitions and applicable Numeric Action Levels (NALs) of this General Permit. b. To determine whether non -visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives. c. To determine whether immediate corrective actions, additional Best Management Practice (BMP) implementation, dr SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non -storm water discharges. d. To determine whether BMPs included in the SWPPP/Rain Event Action Plan (REAP) are effective in preventing or reducing pollutants in storm water discharges and authorized non -storm water discharges. 3. Risk Level 3 — Visual Monitoring (Inspection) Requirements for Qualifying Rain Events a. Risk Level 3 dischargers shall visually observe (inspect) storm water discharges at all discharge locations within two business days (48 hours) after each qualifying rain event. b. Risk Level 3 dischargers shall visually observe (inspect) the discharge of stored or contained storm water that is derived from and discharged subsequent to a qualifying rain event producing precipitation of/z inch or more at the time of discharge. Stored or contained storm water that will likely discharge after operating hours due to anticipated precipitation shall be observed prior to the discharge during operating hours. c. Risk Level 3 dischargers shall conduct visual observations (inspections) during business hours only. d. Risk Level 3 dischargers shall record the time, date and rain gauge reading of all qualifying rain events. e. Within 2 business days (48 hours) prior to each qualifying rain event, Risk Level 3 dischargers shall visually observe (inspect): i. all storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. If needed, the discharger shall implement appropriate corrective actions. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 11 Agreement No. 6574 ATTACHMENT E all BMPs to identify whether they have been properly implemented in accordance with the SWPPP/REAP. If needed, the discharger shall implement appropriate corrective actions. iii. any storm water storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. f. For the visual observations (inspections) described in c.i. and c.iii above, Risk Level 3 dischargers shall observe the presence or absence of floating and suspended materials, a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed pollutants. g. Within two business days (48 hours) after each qualifying rain event, Risk Level 3 dischargers shall conduct post rain event visual observations (inspections) to (1) identify whether BMPs were adequately designed, implemented, and effective, and (2) identify additional BMPs and revise the SWPPP accordingly. h. Risk Level 3 dischargers shall maintain on -site records of all visual observations (inspections), personnel performing the observations, observation dates, weather conditions, locations observed, and corrective actions taken in response to the observations. 4. Risk Level 3 — Water Quality Sampling and Analysis a. Risk Level 3 dischargers shall collect storm water grab samples from sampling locations, as defined in Section 1.5. The storm water grab sample(s) obtained shall be representative of the flow and characteristics of the discharge. b. At minimum, Risk Level 3 dischargers shall collect 3 samples per day of the qualifying event. c. Risk Level 3 dischargers shall ensure that the grab samples collccted of stored or contained storm water are from discharges subsequent to a qualifying rain event (producing precipitation of/z inch or more at the time of discharge). Storm Water Effluent Monitoring Requirements d. Risk Level 3 dischargers shall analyze their effluent samples for: i. pH and turbidity. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 12 Agreement No. 6574 ATTACHMENT E ii. Any additional parameters for which monitoring is required by the Regional Water Board. e. Risk 3 dischargers shall electronically submit all storm event sampling results to the State Water Board no later than 10 days after the conclusion of the storm event. In the event that a Risk Level 3 discharger's effluent exceeds the daily average receiving water monitoring trigger of 500 NTU turbidity or the daily average pH range 6.0-9.0 contained in this General Permit and has a direct discharge into receiving waters, the Risk Level 3 discharger shall subsequently sample receiving waters (RWs) for turbidity, pH (if applicable), and SSC for the duration of coverage under this General Permit. If a Risk Level 3 discharger utilizing ATS with direct discharges into receiving waters discharges effluent that exceeds the NELs in this permit, the discharger shall subsequently sample RWs for turbidity, pH (if applicable), and SSC for the duration of coverage under this General Permit. g. Risk Level 3 dischargers disturbing 30 acres or more of the landscape and with direct discharges into receiving waters shall conduct or participate in benthic macroinvertebrate bioassessment of RWs prior to commencement of construction activity (See Appendix 3). h. Risk Level 3 dischargers shall obtain RW samples in accordance with the Receiving Water sampling location section (Section 1.5), below. 5. Risk Level 3 — Storm Water Discharge Water Quality Sampling Locations Effluent Sampling Locations a. Risk Level 3 dischargers shall perform sampling and analysis of storm water discharges to characterize discharges associated with construction activity from the entire project disturbed area. b. Risk Level 3 dischargers shall collect effluent samples at all discharge points where storm water is discharged off -site. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 13 Agreement No. 6574 ATTACHMENT E c. Risk Level 3 dischargers shallensure that storm water discharge collected and observed represents the effluent in each drainage area based on visual observation of the water and upstream conditions. d. Risk Level 3 dischargers shall monitor and report site run-on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. e. Risk Level 3 dischargers who deploy an ATS on their site, or a portion on their site, shall collect ATS effluent samples and measurements from the discharge pipe or another location representative of the nature of the discharge. f. Risk Level 3 dischargers shall select analytical test methods from the list provided in Table 3 below. g. All storm water sample collection preservation and handling shall be conducted in accordance with Section 1.7 "Storm Water Sample Collection and Handling Instructions" below. R h. Upstream/up-gradient RW samples: Risk Level 3 dischargers shall obtain any required upstream/up-gradient receiving water samples from a representative and accessible location as close as possible and upstream from the effluent discharge point. i. Downstream/down-gradient RW samples: Risk Level 3 dischargers shall obtain any required downstream/down-gradient receiving water samples from a representative and accessible location as close as possible and downstream from the effluent discharge point. j, If two or more discharge locations discharge to the same receiving water, Risk Level 3 dischargers may sample the receiving water at a single upstream and downstream location. 5 For example, if there has been concrete work recently in an area, or drywall scrap is exposed to the rain, a pH sample shall be taken of drainage from the relevant work area. Similarly, if sediment -laden water is flowing through some parts of a silt fence, samples shall be taken of the sediment laden water even if most water flowing through the fence is clear. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 14 Agreement No. 6574 ATTACHMENT E 6. Risk Level 3 — Visual Observation and Sample Collection Exemptions a. Risk Level 3 dischargers shall be prepared to collect samples and conduct visual observation (inspections) until the minimum requirements of Sections 1.3 and 1.4 above are completed. Risk Level 3 dischargers are not required to physically collect samples or conduct visual observation (inspections) under the following conditions: i. During dangerous weather conditions such as flooding and electrical storms. ii. Outside of scheduled site business hours, b. If no required samples or visual observation (inspections) are collected due to these exceptions, Risk Level 3 dischargers shall include an explanation in their SWPPP and in the Annual Report documenting why the sampling or visual observation (inspections) were not conducted. 7. Risk Level 3 — Storm Water Sample Collection and Handling Instructions a. Risk Level 3 dischargers shall refer to Table 3 below for test methods, detection limits, and reporting units. b. Risk Level 3 dischargers shall ensure that testing laboratories will receive samples within 48 hours of the physical sampling (unless otherwise required by the laboratory), and shall use only the sample containers provided by the laboratory to collect and store samples. c. Risk Level 3 dischargers shall designate and train personnel to collect, maintain, and ship samples in accordance with the Surface Water Ambient. Monitoring Program's (SWAMP) 2008 Quality Assurance Prograrn Plan (QAPrP).6 6 Additional information regarding SWAMP's QAPrP can be found at htt-J/www.waterboards.ea. ov/water issues/programs/swamp/. QAPrP: http://www.waterboards. ca. gov/water_issues/programs/swam p/docs/qapp/swam p_gapp_ master090108a.pdf 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 15 Agreement No. 6574 ATTACHMENT E 8. Risk Level 3 — Monitoring Methods a. Risk Level 3 dischargers shall include a description of the following items in the CSMP: i. Visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures. Sampling locations, and sample collection and handling procedures. This shall include detailed procedures for sample collection, storage, preservation, and shipping to the testing lab to assure that consistent quality control and quality assurance is maintained. Dischargers shall attach to the monitoring program an example Chain of Custody form used when handling and shipping samples. iii. Identification of the analytical methods and related method detection limits (if applicable) for each parameter required in Section 1.4 above. b. Risk Level 3 dischargers shall ensure that all sampling and sample preservation are in accordance with the current edition of "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association). All monitoring instruments and equipment (including a discharger's own field instruments for measuring pH and turbidity) should be calibrated and maintained in accordance with manufacturers' specifications to ensure accurate measurements. Risk Level 3 dischargers shall ensure that all laboratory analyses are conducted according to test procedures under 40 CFR Part 136, unless other test procedures have been specified in this General Permit or by the Regional Water Board. With the exception of field analysis conducted by the discharger for turbidity and pH, all analyses should be sent to and conducted at a laboratory certified for such analyses by the State Department of Health Services (SSC exception). Risk Level 3 dischargers shall conduct their own field analysis of pl I and may conduct their own field analysis of turbidity if the discharger has sufficient capability (qualified and trained employees, properly calibrated and maintained field instruments, etc.) to adequately perform the field analysis. 9. Risk Level 3 — Analytical Methods a. Risk Level 3 dischargers shall refer to Table 3 below for test methods, detection limits, and reporting units. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 16 Agreement No. 6574 ATTACHMENT E b. pH: Risk Level 3 dischargers shall perform pH analysis on -site with a calibrated pH meter or a pH test kit. Risk Level 3 dischargers shall record pH monitoring results on paper and retain these records in accordance with Section 1.14, below. c. Turbidity: Risk Level 3 dischargers shall perform turbidity analysis using a calibrated turbidity meter (turbidimeter), either on -site or at an accredited lab. Acceptable test methods include Standard Method 2130 or USEPA Method 180.1. The results will be recorded in the site log book in Nephelometric Turbidity Units (NTU). d. Suspended sediment concentration (SSC): Risk Level 3 dischargers that exceed the turbidity Receiving Water Monitoring Trigger shall perform SSC analysis using ASTM Method D3977-97. e. Bioassessment: Risk Level 3 dischargers shall perform bioassessment sampling and analysis according to Appendix 3 of this General Permit. 10. Risk Level 3 - Non -Storm Water Discharge Monitoring Requirements a. Visual Monitoring Requirements: i. Risk Level 3 dischargers shall visually observe (inspect) each drainage area for the presence of (or indications of prior) unauthorized and authorized non -storm water discharges and their sources. Risk Level 3 dischargers shall conduct one visual observation (inspection) quarterly in each of the following periods: January - March, April -June, July -September, and October -December. Visual observation (inspections) are only required during daylight hours (sunrise to sunset). iii. Risk Level 3 dischargers shall ensure that visual observations (inspections) document the presence or evidence of any non - storm water discharge (authorized or unauthorized), pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.), and source. Risk Level 3 dischargers shall maintain on -site records indicating the personnel performing the visual observation (inspections), the dates and approximate time each drainage area and non -storm water discharge was observed, and the response taken to eliminate unauthorized non -storm water discharges and to 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 17 Agreement No. 6574 ATTACHMENT E reduce or prevent pollutants from contacting non -storm water discharges. b. Effluent Sampling Locations: i. Risk Level 3 dischargers shall sample effluent at all discharge points where non -storm water and/or authorized non -storm water is discharged off -site. ii. Risk Level 3 dischargers shall send all non -storm water sample analyses to a laboratory certified for such analyses by the State Department of Health Services. iii. Risk Level 3 dischargers shall monitor and report run-on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. 11. Risk Level 3 — Non -Visible Pollutant Monitoring Requirements a. Risk Level 3 dischargers shall collect one or more samples during any breach, malfunction, leakage, or spill observed during a visual inspection which could result in the discharge of pollutants to surface waters that would not be visually detectable in storm water. b. Risk Level 3 dischargers shall ensure that water samples are large enough to characterize the site conditions. c. Risk Level 3 dischargers shall collect samples at all discharge locations that can be safely accessed. d. Risk Level 3 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. e. Risk Level 3 dischargers shall analyze samples for all non -visible pollutant parameters (if applicable) - parameters indicating the presence of pollutants identified in the pollutant source assessment required (Risk Level 3 dischargers shall modify their CSMPs to address these additional parameters in accordance with any updated SWPPP pollutant source assessment). f. Risk Level 3 dischargers shall collect a sample of storm water that has not come in contact with the disturbed soil or the materials stored or used on -site (uncontaminated sample) for comparison with the discharge sample. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 18 Agreement No. 6574 ATTACHMENT E g. Risk Level 3 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis.' h. Risk Level 3 dischargers shall keep all field /or analytical data in the SWPPP document. 12. Risk Level 3 — Watershed Monitoring Option Risk Level 3 dischargers who are part of a qualified regional watershed -based monitoring program may be eligible for relief from the requirements in Sections 1.5. The Regional Water Board may approve proposals to substitute an acceptable watershed -based monitoring program by determining if the watershed -based monitoring program will provide substantially similar monitoring information in evaluating discharger compliance with the requirements of this General Permit. 13. Risk Level 3 — Particle Size Analysis for Project Risk Justification Risk Level 3 dischargers justifying an alternative project risk shall report a soil particle size analysis used to determine the RUSLE K- Factor. ASTM D-422 (Standard Test Method for Particle -Size Analysis of Soils), as revised, shall be used to determine the percentages of sand, very fine sand, silt, and clay on the site. 14. Risk Level 3 — Records Risk Level 3 dischargers shall retain records of all storm water monitoring information and copies of all reports (including Annual Reports) for a period of at least three years. Risk Level 3 dischargers shall retain all records on -site while construction is ongoing. These records include: a. The date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation. b. The individual(s) who performed the facility inspections, sampling, visual observation (inspections), and or measurements. c. The date and approximate time of analyses. For laboratory analysis, all sampling, sample preservation, and analyses must be conducted according to test procedures under 40 CFR Part 136. Field discharge samples shall be collected and analyzed according to the specifications of the manufacturer of the sampling devices employed. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 19 Agreement No. 6574 ATTACHMENT E d. The individual(s) who performed the analyses. e. A summary of all analytical results from the last three years, the method detection limits and reporting units, the analytical techniques or methods used, and the chain of custody forms. f. Rain gauge readings from site inspections. g. Quality assurance/quality control records and results. h. Non -storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records (see Sections 1.3 and 1.10 above). i. Visual observation and sample collection exception records (see Section 1.6 above). j. The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. 15. Risk Level 3 — NAL Exceedance Report a. Risk Level 3 dischargers shall electronically submit all storm event sampling results to the State Water Board no later than 10 days after the conclusion of the storm event. The Regional Boards have the authority to require the submittal of an NAL Exceedance Report. b. Risk Level 3 dischargers shall certify each NAL Exceedance Report in accordance with the Special Provisions for Construction Activity In this General Permit. c. Risk Level 3 dischargers shall retain an electronic or paper copy of each NAL Exceedance Report for a minimum of three years after the date the annual report is filed. d. Risk Level 3 dischargers shall include in the NAL Exceedance Report: i. The analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit"). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 20 Agreement No. 6574 ATTACHMENT E The date, place, time of sampling, visual observation (inspections), and/or measurements, including precipitation. iii. A description of the current BMPs associated with the effluent sample that exceeded the NAL and the proposed corrective actions taken. 16. Risk Level 3 — Bioassessment a. Risk Level 3 dischargers with a total project -related ground disturbance exceeding 30 acres shall: i. Conduct bioassessment monitoring, as described in Appendix 3. Include the collection and reporting of specified in stream biological data and physical habitat. iii. Use the bioassessment sample collection and Quality Assurance & Quality Control (QA/QC) protocols developed by the State of California's Surface Water Ambient Monitoring Program (SWAMP).$ b. Risk Level 3 dischargers qualifying for bioassessment, where construction commences out of an index period for the site location shall: Receive Regional Board approval for the sampling exception. ii. Conduct bioassessment monitoring, as described in Appendix 3. iii. Include the collection and reporting of specified instream biological data and physical habitat. iv. Use the bioassessment sample collection and Quality Assurance & Quality Control (QA/QC) protocols developed by the State of California's Surface Water Ambient Monitoring Program (SWAMP). v. Make a check payable to: Cal State Chico Foundation (SWAMP Bank Account) or San Jose State Foundation (SWAMP Bank Account) and include the WDID# on the check for the amount calculated for the exempted project. 6 l jrw va:water Bards lw ater d sues/programA am . 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 21 Agreement No. 6574 ATTACHMENT E vi. Send a copy of the check to the Regional Water Board office for the site's region. vii. Invest $7,500.00 X The number of samples required into the SWAMP program as compensation (upon regional board approval). 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-0006-DWQ 22 Agreement No. 6574 ry` II II Q QC. j ` Ogg; +J Z L C O¢ �� ¢ ¢ ' 00 D a) O Z Z � a Z � c p cLO a) Cn N rn T a� Q a. cn Z Z a) a) H — >„ Z ._rn Zo _� O N (n >a) LO LO Z; 00 d II II :D V w z Z O Z Z Z •� �r L LS'i " t Q O Q :3 Q O L _ N LO ¢ .... ...... _.. ..... C O J %� a Cl) cn cn O � a) C" v> VJ Cl) cm a) L._ � p p L M 0 a) d ice' $w a) c0 a) c6 "' CLn L r L ¢ a) a) U :� O 0 f6 - O a) a7 J r 0 J L U U J U p¢ L L U O J a) Y C L 0 O� U U U a) Y .^ c6 i p 0 _p � 00 LL N p� X a)a p 0 O.. —............_. ... d m o � O a> 0 n p O O CL O c a> a (> J_ O D ,flb, I X "Rii i "-' L6 W00 O CO LL H ¢a� L in F— Cn Lu 0 19 W U .S 0) ¢ co O %ou. N d "k U ca O n m (D .3 O C O a c 0 is (D a � ca o U O > O O_ M a a)c a m � a N O U O O 3 X a) A — 1- a7 D LL Ea) (n cp J T Cn a C a) O a) C� — L Z J o_ �v O M I-_O m 0-) L w C 00 0 C O L .O O a 0 U w � o � o m r c E N c a) o L J)> 6� N �� c 0-) N �. E M O E an a a) � m o O � a>� z12j a �� a) ea m � w , H � ♦— H C c o LL � _ v rn �c C O U U N U) < Qo 3 a U) Y) a 0 0 m cu U a) f0 a U O a O 0 O O I N O N d 0 v 0 0 0 0 N a a� "a3 c N E co d 0 0 0 6 0 0 N C� N Agreement No. 6574 ATTACHMENT F ATTACHMENT F: Active Treatment System (ATS) Requirements Table 1 - Numeric Effluent Limitations, Numeric Action Levels, Test Methods, on Limb e ortin Units Parameter Test Discharge g Min. _... Units .........ww Numeric _.WWWWW- Numeric Method Type Detection Action Effluent Limit Level Limitation Turbidity _...._ _...._� �.___........ EPA 10 NTU for 0180.1 Daily Flow - and/or field Weighted test with a For ATS 1 NTU N/A Average calibrated discharges & portable 20 NTU for instrument Any Single Sample A. Dischargers choosing to implement an Active Treatment System (ATS) on their site shall comply with all of the requirements in this Attachment. B. The discharger shall maintain a paper copy of each ATS specification onsite in compliance with the record retention requirements in the Special Provisions of this General Permit. C. ATS Design, Operation and Submittals The ATS shall be designed and approved by a Certified Professional in Erosion and Sediment Control (CPESC), a Certified Professional in Storm Water Quality (CPSWQ); a California registered civil engineer; or any other California registered engineer. 2. The discharger shall ensure that the ATS is designed in a manner to preclude the accidental discharge of settled floc' during floc pumping or related operations. 3. The discharger shall design outlets to dissipate energy from concentrated flows. 4. The discharger shall install and operate an ATS by assigning a lead person (or project manager) who has either a minimum of five years construction storm Floc is defined as a clump of solids formed by the chemical action in ATS systems. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 1 Agreement No. 6574 ATTACHMENT F water experience or who is a licensed contractors specifically holding a California Class A Contractors license.2 5. The discharger shall prepare an ATS Plan that combines the site -specific data and treatment system information required to safely and efficiently operate an ATS. The ATS Plan shall be electronically submitted to the State Water Board at least 14 days prior to the planned operation of the ATS and a paper copy shall be available onsite during ATS operation. At a minimum, the ATS Plan shall include: a. ATS Operation and Maintenance Manual for All Equipment. b. ATS Monitoring, Sampling & Reporting Plan, including Quality Assurance/Quality Control (QA/QC). c. ATS Health and Safety Plan. d. ATS Spill Prevention Plan. 6. The ATS shall be designed to capture and treat (within a 72-hour period) a volume equivalent to the runoff from a 10-year, 24-hour storm event using a watershed runoff coefficient of 1.0. D. Treatment —Chemical Coagulation/Flocculation 1. Jar tests shall be conducted using water samples selected to represent typical site conditions and in accordance with ASTM D2035-08 (2003). 2. The discharger shall conduct, at minimum, six site -specific jar tests (per polymer with one test serving as a control) for each project to determine the proper polymer and dosage levels for their ATS. 3. Single field jar tests may also be conducted during a project if conditions warrant, for example if construction activities disturb changing types of soils, which consequently cause change in storm water and runoff characteristics. E. Residual Chemical and Toxicity Requirements 1. The discharger shall utilize a residual chemical test method that has a method detection limit (MDL) of 10% or less than the maximum allowable threshold 2 Business and Professions Code Division 3, Chapter 9, Article 4, Class A Contractor: A general engineering contractor is a contractor whose principal contracting business is in connection with fixed works requiring specialized engineering knowledge and skill. [htt //www.csl .ca. aov/Denerai-lnformatien/libra r Aicensin-classifications.as ]. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 2 Agreement No. 6574 ATTACHMENT F concentration (MATC) for the specific coagulant in use and for the most sensitive species of the chemical used. 2. The discharger shall utilize a residual chemical test method that produces a result within one hour of sampling. 3. The discharger shall have a California State certified laboratory validate the selected residual chemical test. Specifically the lab will review the test protocol, test parameters, and the detection limit of the coagulant. The discharger shall electronically submit this documentation as part of the ATS Plan. 4. If the discharger cannot utilize a residual chemical test method that meets the requirements above, the discharger shall operate the ATS in Batch Treatment4 mode. 5. A discharger planning to operate in Batch Treatment mode shall perform toxicity testing in accordance with the following: a. The discharger shall initiate acute toxicity testing on effluent samples representing effluent from each batch prior to discharge'. All bioassays shall be sent to a laboratory certified by the Department of Health Services (DHS) Environmental Laboratory Accreditation Program (ELAP). The required field of testing number for Whole Effluent Toxicity (WET) testing is E113.6 b. Acute toxicity tests shall be conducted with the following species and protocols. The methods to be used in the acute toxicity testing shall be those outlined for a 96-hour acute test in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Water to Freshwater and Marine Organisms, USEPA-841-R-02-012" for Fathead minnow, Pimephales promelas (fathead minnow). Acute toxicity for Oncorhynchus mykiss (Rainbow Trout) may be used as a substitute for testing fathead minnows. c. All toxicity tests shall meet quality assurance criteria and test acceptability criteria in the most recent versions of the EPA test method for WET testing. d. The discharger shall electronically report all acute toxicity testing. 3 The Maximum Allowable Threshold Concentration (MATC) is the allowable concentration of residual, or dissolved coagulant/flocculant in effluent. The MATC shall be coagulant/flocculant-specific, and based on toxicity testing conducted by an independent, third -party laboratory. A typical MATC would be: The MATC is equal to the geometric mean of the NOEC (No Observed Effect Concentration) and LOEC (Lowest Observed Effect Concentration) Acute and Chronic toxicity results for most sensitive species determined for the specific coagulant. The most sensitive species test shall be used to determine the MATC. 4 Batch Treatment mode is defined as holding or recirculating the treated water in a holding basin or tank(s) until treatment is complete or the basin or storage tank() is full. 5 This requirement only requires that the test be initiated prior to discharge. s http://www.dhs.ca.gov/ps/Is/etap/pdf/FOT_Desc.pdf, 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 3 Agreement No. 6574 ATTACHMENT F F. Filtration 1. The ATS shall include a filtration step between the coagulant treatment train and the effluent discharge. This is commonly provided by sand, bag, or cartridge filters, which are sized to capture suspended material that might pass through the clarifier tanks. 2. Differential pressure measurements shall be taken to monitor filter loading and confirm that the final filter stage is functioning properly. G. Residuals Management 1. Sediment shall be removed from the storage or treatment cells as necessary to ensure that the cells maintain their required water storage (i.e., volume) capability. 2. Handling and disposal of all solids generated during ATS operations shall be done in accordance with all local, state, and federal laws and regulations. H. ATS Instrumentation The ATS shall be equipped with instrumentation that automatically measures and records effluent water quality data and flow rate. 2. The minimum data recorded shall be consistent with the Monitoring and Reporting requirements below, and shall include: a. Influent Turbidity b. Effluent Turbidity c. Influent pH d. Effluent pH e. Residual Chemical f. Effluent Flow rate g. Effluent Flow volume 3. Systems shall be equipped with a data recording system, such as data loggers or webserver-based systems, which records each measurement on a frequency no longer than once every 15 minutes. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 4 Agreement No. 6574 ATTACHMENT F 4. Cumulative flow volume shall be recorded daily. The data recording system shall have the capacity to record a minimum of seven days continuous data. 5. Instrumentation systems shall be interfaced with system control to provide auto shutoff or recirculation in the event that effluent measurements exceed turbidity or pH. 6. The system shall also assure that upon system upset, power failure, or other catastrophic event, the ATS will default to a recirculation mode or safe shut down. 7. Instrumentation (flow meters, probes, valves, streaming current detectors, controlling computers, etc.) shall be installed and maintained per manufacturer's recommendations, which shall be included in the QA/QC plan. 8, The QA/QC plan shall also specify calibration procedures and frequencies, instrument method detection limit or sensitivity verification, laboratory duplicate procedures, and other pertinent procedures. 9. The instrumentation system shall include a method for controlling coagulant dose, to prevent potential overdosing. Available technologies include flow/turbidity proportional metering, periodic jar testing and metering pump adjustment, and ionic charge measurement controlling the metering pump. I. ATS Effluent Discharge 1. ATS effluent shall comply with all provisions and prohibitions in this General Permit, specifically the NELs. 2. NELs for discharges from an ATS; a. Turbidity of all ATS discharges shall be less than 10 NTU for daily flow - weighted average of all samples and 20 NTU for any single sample. b. Residual Chemical shall be < 1 O% of MATC7 for the most sensilive species of the chemical used. The Maximum Allowable Threshold Concentration (MATC) is the allowable concentration of residual, or dissolved, coagulant/flocculant in effluent. The MATC shall be coagulant/flocculant-specific, and based on toxicity testing conducted by an independent, third -party laboratory. The MATC is equal to the geometric mean of the NOEC (No Observed Effect Concentration) and LOEC (Lowest Observed Effect Concentration) Acute and Chronic toxicity results for most sensitive species determined for the specific coagulant. The most sensitive species test shall be used to determine the MATC. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 5 Agreement No. 6574 ATTACHMENT F 3. If an analytical effluent sampling result exceeds the turbidity NEL (as listed in Table 1), the discharger is in violation of this General Permit and shall electronically file the results in violation within 24-hours of obtaining the results. 4. If ATS effluent is authorized to discharge into a sanitary sewer system, the discharger shall comply with any pre-treatment requirements applicable for that system. The discharger shall include any specific criteria required by the municipality in the ATS Plan. 5. Compliance Storm Event: Discharges of storm water from ATS shall comply with applicable NELs (above) unless the storm event causing the discharges is determined after the fact to be equal to or larger than the Compliance Storm Event (expressed in inches of rainfall). The Compliance Storm Event for ATS discharges is the 10 year, 24 hour storm, as determined using these maps: //ww,rr:rs.; afrPn' 9v�s, This exemption is dependent on the submission of rain gauge data verifying the storm event is equal to or larger than the Compliance Storm. J. Operation and Maintenance Plan 1. Each Project shall have a site -specific Operation and Maintenance (O&M) Manual covering the procedures required to install, operate and maintain the ATS.' 2. The O&M Manual shall only be used in conjunction with appropriate project - specific design specifications that describe the system configuration and operating parameters. 3. The O&M Manual shall have operating manuals for specific pumps, generators, control systems,and other equipment. K. Sampling and Reporting Quality Assurance/ Quality Check (QA/QC) Plan 4. A project -specific QA/QC Plan shall be developed for each project. The QA/QC Plan shall include at a minimum: a. Calibration — Calibration methods and frequencies for all system and field instruments shall be specified. 8 The manual is typically in a modular format covering generalized procedures for each component that is utilized in a particular system. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 6 Agreement No. 6574 ATTACHMENT F b. Method Detection Limits (MDLs) — The methods for determining MDLs shall be specified for each residual coagulant measurement method. Acceptable minimum MDLs for each method, specific to individual coagulants, shall be specified. c. Laboratory Duplicates — Requirements for monthly laboratory duplicates for residual coagulant analysis shall be specified. L. Personnel Training 1. Operators shall have training specific to using an ATS and liquid coagulants for storm water discharges in California. 2. The training shall be in the form of a formal class with a certificate and requirements for testing and certificate renewal. 3. Training shall include a minimum of eight hours classroom and 32 hours field training. The course shall cover the following topics: a. Coagulation Basics —Chemistry and physical processes b. ATS System Design and Operating Principles c. ATS Control Systems d. Coagulant Selection — Jar testing, dose determination, etc. e. Aquatic Safety/Toxicity of Coagulants, proper handling and safety f. Monitoring, Sampling, and Analysis g. Reporting and Recordkeeping h. Emergency Response M. Active Treatment System (ATS) Monitoring Requirements Any discharger who deploys an ATS on their site shall conduct the following: 1. Visual Monitoring a. A designated responsible person shall be on site daily at all times during treatment operations. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 7 Agreement No. 6574 ATTACHMENT F b. Daily on -site visual monitoring of the system for proper performance shall be conducted and recorded in the project data log. i. The log shall include the name and phone number of the person responsible for system operation and monitoring. ii. The log shall include documentation of the responsible person's training. 2. Operational and Compliance Monitoring a. Flow shall be continuously monitored and recorded at not greater than 15- minute intervals for total volume treated and discharged. b. Influent and effluent pH must be continuously monitored and recorded at not greater than 15-minute intervals. c. Influent and effluent turbidity (expressed in NTU) must be continuously monitored and recorded at not greater than 15-minute intervals. d. The type and amount of chemical used for pH adjustment, if any, shall be monitored and recorded. e. Dose rate of chemical used in the ATS system (expressed in mg/L) shall be monitored and reported 15-minutes after startup and every 8 hours of operation. f. Laboratory duplicates — monthly laboratory duplicates for residual coagulant analysis must be performed and records shall be maintained onsite. g. Effluent shall be monitored and recorded for residual chemical/additive levels. h. If a residual chemical/additive test does not exist and the ATS is operating in a batch treatment mode of operation refer to the toxicity monitoring requirements below. 3. Toxicity Monitoring A discharger operating in batch treatment mode shall perform toxicity testing in accordance with the following: a. The discharger shall initiate acute toxicity testing on effluent samples representing effluent from each batch prior to discharge.9 All bioassays shall be sent to a laboratory certified by the Department of Health Services (DHS) 9ITThis requirement only requires that the test be initiated prior to discharge. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 8 Agreement No. 6574 ATTACHMENT F Environmental Laboratory Accreditation Program (ELAP). The required field of testing number for Whole Effluent Toxicity (WET) testing is E113.10 b.. Acute toxicity tests shall be conducted with the following species and protocols. The methods to be used in the acute toxicity testing shall be those outlined for a 96-hour acute test in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Water to Freshwater and Marine Organisms, USEPA-841-R-02-012" for Fathead minnow, Pimephales promelas or Rainbow trout Oncorhynchus mykiss may be used as a substitute for fathead minnow. c. All toxicity tests shall meet quality assurance criteria and test acceptability criteria in the most recent versions of the EPA test method for WET testing." 4. Reporting and Recordkeeping At a minimum, every 30 days a LRP representing the discharger shall access the State Water Boards Storm Water Mulit-Application and Report Tracking system (SMARTS) and electronically upload field data from the ATS. Records must be kept for three years after the project is completed . 5. Non-compliance Reporting a. Any indications of toxicity or other violations of water quality objectives shall be reported to the appropriate regulatory agency as required by this General Permit. b. Upon any measurements that exceed water quality standards, the system operator shall immediately notify his supervisor or other responsible parties, who shall notify the Regional Water Board. c. If any monitoring data exceeds any applicable NEL in this General Permit, the discharger shall electronically submit a NEL Violation Report to the State Water Board within 24 hours after the NEL exceedance has been identified. i. ATS dischargers shall certify each NEL Viulaliuri Report in accordance with the Special Provisions for Construction Activity in this General Permit. ii. ATS dischargers shall retain an electronic or paper copy of each NEL Violation Report for a minimum of three years after the date the annual report is filed. iii. ATS dischargers shall include in the NEL Violation Report: 10 ha .,i w w�awv,dti�s..ca. ovi sflsiela df/F 2T Desc��,df. " httpl/www.epa,,gov/waterscience/methods/we .. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 9 Agreement No. 6574 ATTACHMENT F (1) The analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit"); (2) The date, place, time of sampling, visual observation (inspections), and/or measurements, including precipitation; and (3) A description of the current onsite BMPs, and the proposed corrective actions taken to manage the NEL exceedance. iv. Compliance Storm Exemption - In the event that an applicable NEL has been exceeded during a storm event equal to or larger than the Compliance Storm Event, ATS dischargers shall report the on -site rain gauge reading and nearby governmental rain gauge readings for verification. 2009-0009-DWQ amended by 2010-0014-DWQ & 2012-2006-DWQ 10 Agreement No. 6574 Agreement No. 6574 A B C 1 Sediment Risk Factor Worksheet Entry 2 A R Factor Analyses of data indicated that when factors other than rainfall are held constant, soil loss is directly proportional to a rainfall factor composed of total storm kinetic energy (E) times the maximum 30-min intensity (130) (Wischmeier and Smith, 1958). The numerical value of R is the average annual sum of E130 for storm events during a rainfall record of at least 22 years, "Isoerodent" maps were developed based on R values calculated for more than 1000 locations in the 3 Western U.S. Refer to the Zink below to determine the R factor for the project site. 4 htt ://cf ub.e a. ov/n des/stormwater/LEWAewCalculator.cfm 5 R Factor Value, 0 6 13K Factor (weighted average, by area, for all site soils WW The soil-erodibility factor K represents: (1) susceptibility of soil or surface material to erosion, (2) transportability of the sediment, and (3) the amount and rate of runoff given a particular rainfall input, as measured under a standard condition Fine -textured soils that are high in clay have low K values (about 0.05 to 0.15) because the particles are resistant to detachment. Coarse -textured soils, such as sandy soils, also have low K values (about 0,05 to 0.2) because of high infiltration resulting in low runoff even though these particles are easily detached. Medium -textured soils, such as a silt loam, have moderate K values (about 0.25 to 0.45) because they are moderately susceptible to particle detachment and they produce runoff at moderate rates. Soils having a high silt content are especially susceptible to erosion and have hig I K values, which can exceed 0.45 and can be as large as 0.65. Silt -size particles are easily detached and tend to crust, 7 producing high rates and large volumes of runoff. Use Site -specific data must be submitted„ 8 Site -specific K factor cpuidance g K Factor Value 0 10 C) LS Factor (weighted average, by area, for all slopes) The effect of topography on erosion is accounted for by the LS factor, which combines the effects of a hillslope-length factor, L, and a hillslope-gradient factor, S. Generally speaking, as hillslope length and/or hillslope gradient increase, soi loss increases. As hillslope length increases, total soil loss and soil loss per unit area increase due to the progressive accumulation of runoff in the downslope direction. As the hillslope gradient increases, the velocity and erosivity of runoff increases. Use the LS table located in separate tab of this spreadsheet to determine LS factors. Estimate the weighted 11 LS for the site prior to construction. 12 LS Table 13 LS Factor Value 0 r Watershed Erosion Estimate (=RxKxLS) in tons/acr 0 Site Sediment Risk Factor Medium Sediment R17 Low ekimen�5�and <75 tons/acreLow High Sediment Risk: > = 75 tons/acr 20 21 22 23 GIS Map ... ,. Method: a .n ,......, 24 1. The R factor for the project is calculated using the online calculator at: 25 htt ;//cf ub.e a. ov/n des/stormwater/LEW/lewCalculator.cfm 26 2, The K and LS factors may be obtained by accessing the GIS maps located on the State Water 27 Board FTP website at: 28 fig N/swrcb2a.waterboards.ca. ov - �d ublswrcbldw to �Risw�' 29 Agreement No. 6574 Receiving Water (RW) Risk Factor Worksheet A. Watershed Characteristics A.1. Does the disturbed area discharge (either directly or indirectly) to a 303(d)-listed waterbody impaired by sediment (For help with impaired waterbodies please visit the link below) or has a USEPA approved TMDL implementation plan for sediment?: A.2. Does the disturbed area discharge to a waterbody with designated beneficial uses of SPAWN & COLD & MIGRATORY? (For help please review the appropriate Regional Board Basin Plan) Entry Score yes/no no II Low Agreement No. 6574 Combined Risk Level, Matrix Sediment Risk Low Medium Low Level Level High Level Project Sediment Risk: Low Project RW Risk: I.Ow Project Combined Risk: ' ; 7�� M Agreement No. 6574 Soil Erodibility Factor (K) K factor can be determined by using the nomograph method, which requires that a particle size analysis (ASTM D-422) be to determine the percentages of sand, very fine sand, silt and clay. Use the figure below to determine appropriate K s— Per6M1 M� k hekson triangular nomograph used to estimate soil erodibility (K) factor. The figure above is the USDA nomograph used to determine the K factor for a soil, based on its texture (% silt plus very fine sand, °.% sand, % organic matter, soil structure„ and permeability). Nomograph from Erickson 1977 as referenced in Goldman eL al., 1986. Agreement No. 6574 A-v.ge. Mi—hd M.p. (% 02 0.5 LID 2.0 30 4.0 5 a U D'O IOX 120 140 Me 21LO 2h 0 30 0 40A SOD 60 �3 '105 CD 0 0 ' 0,113 0 f 020 U123 0 26 " '42 013'i 0.36 030 0 19 1��41 1) 4b CAB 0 53 0 hR 0 F, I 6 C1.05 (G.33 013 r1.17 0,20 0.77 026 ",:V 03 OA 1 0�45 0�49 5 0. r/l 9,0 0,60 097 t 01 9 O.M' O�Oe 0 M U 13 OA7 0 20 023 (U6 012 0 3' 0,45 0.1111 0 Wi V'67 0.50 09� Y 13 131 8 41 12 C'u, 0,01 0.09 o. 11 a 1( o 7.0 O.M 0,26 G"W (09 0.47 D b�� f".62 3 P6 0,93 1 M 1,37 1 62 1.04 IN ep W� 010 � CLUO 11 " ul I ( 07, .11 a � 032 0 0 0 49 0�6 0 W 064 1 04 1 1 bl I rO 2�19 25 0XV, n Q( ("I 0 16 111., 11.16 �� 3108' U�36 (14 0�4 098 1 2 1, e1r, �24 M, 241 2 9? 3 10 so a 0 0,05 0.1 e)?I 1Y. 30 0.38 DAB DA114 030 0.9 1,115 IAO 1 64 2�14 0 2 57 122 424 b D 9 75 5 005 01M 01 1 0 25 0,3' 04 D G 0, 69 Oql �co 1 'A 1 0 ' 2,21 28' 1�rlf 4�44 509 r�2'0' A I e MO D'u, 0,09 0119 020 041 5 0�57 r� _� , ' 10 1 4r' 1,06 2,31 2 r"i 351 4,59 'i M F.44 M3 10 611 IW 0,06 tr US �r,17 r� '13 0.50 0 56 OAF �'05 � 41 , 9' � J, as 3.6B 4 M, C I I M 10.115 12 es 1�4'59 200 MO 0 Cl a I B o� -v 057 0 M 2 25 lli4 1,12 234 aof 3A ; 4 56 6� 0 4 r�u' 9 u 13'0( �6�16 992 250 0.0' 6 0 u �9 0 4D 064 cj�fi 1 9�� 272 3 rM 4A 537 13: 1 el�i 1 567 19 42 12 fe 3010 O'ffi rj� 0�20 0 43 a C19 0 9' 1 2'ri 60 2�24 3 Olh UKe bj 1 6.15 3 B 2, 10,81 1 331, 81 1 ' 22,5r 26U'l 400 0,06 0 1 W. DAB CI 114 1 5t 1.9' 2 , 70 3 �5 5 M 3 6 '0� 102 1"l 53 1 6 2295 2K 00 33 CV SIM 'r (� 0 2, (L2' 0 SO 0.96 2 1191 2.43 52 4�9111 6�6 e 8�4(j , 2C, 1 )q v 2114 31 M N % 4? 18 Ono 0 O'� 2 11 26 0 63 1 10 �'ft 2.�ll 2,69 4, 2A 6.03 8, 1 r MO 12,69 1116 2A 24 29�9e 40.2A SO 63 hO 93 1000 0 or D' 13 COY 069 3 1 Ki 2 55 1.30 491 UP 9Ad 1223 14 96 20 Ile 2U16 14, 4G,29 MM 84 e 2.15 LS Factors fear Construdbi E S�l es. Tabb h ont Reoard ek at, 1997 Agreement No. 6574 APPENDIX 2 APPENDIX 2: Post -Construction Water Balance Performance Standard Spreadsheet The discharger shall submit with their Notice of Intent (NOI) the following information to demonstrate compliance with the New and Re -Development Water Balance Performance Standard. The discharger must submit a small-scale topographic map of the site to show the existing contour elevations, pre- and post -construction drainage divides, and the total length of stream in each watershed area. Recommended scales include 1 in. = 20 ft., 1 in. = 30 ft., 1 in. = 40 ft., or 1 in = 50 ft. The suggested contour interval is usually 1 to 5 feet, depending upon the slope of the terrain. The contour interval may be increased on steep slopes. Other contour intervals and scales may be appropriate given the magnitude of land disturbance. Spreadsheet Instructions The intent of the spreadsheet is to help dischargers calculate the project -related increase in runoff volume and select impervious area and runoff reduction credits to reduce the project -related increase in runoff volume to pre -project levels. The discharger has the option of using the spreadsheet (Appendix 2.1) or a more sophisticated, watershed process -based model (e.g. Storm Water Management Model, Hydrological Simulation Program Fortran) to determine the project -related increase in runoff volume. In Appendix 4.1, you must complete the worksheet for each land use/soil type combination for each project sub -watershed. Steps 1 through 9 pertain specifically to the Runoff Volume Calculator: Step 1: Enter the county where the project is located in cell H3. Step 2: Enter the soil type in cell H6. Step 3: Enter the existing pervious (dominant) land use type in cell H7. Step 4: Enter the proposed pervious (dominant) land use type in cell H8. Step 5: Enter the total project site area in cell H11 or J11. Step 6: Enter the sub -watershed area in cell H12 or J12. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 e " :110I97/' Step 7: Enter the existing rooftop area in cell H17 or J17, the existing non - rooftop impervious area in cell H18 or J18, the proposed rooftop area in cell H19 or J19, and the proposed non -rooftop impervious area in cell H2O or J20 Step 8: Work through each of the impervious area reduction credits and claim credits where applicable. Volume that cannot be addressed using non- structural practices must be captured in structural practices and approved by the Regional Water Board. Step 9: Work through each of the impervious volume reduction credits and claim credits where applicable. Volume that cannot be addressed using non-structural practices must be captured in structural practices and approved by the Regional Water Board. 0 Porous Pavement Tree Planting 0, Downspout Disconnection 0 Impervious Area Disconnection a Green Roof 0 Stream Buffer Vegetated Swales m Rain Barrels and Cisterns 0 Landscaping Soil Quality 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 Post Construction Water 113a�ance CdWator ......... ........... 1 Ctr 1,9111,rJ If you can not answer la then ` 1111 Q fyy( you know the 11 Yu t2 the county where the prolecl is i i percent le storm even) aced (click on the cell to the right f6r 1 i z, your location enter u n tl Il ha#riY This will determine the SACRAMENTO '..ifmn box below W ,got 951h percentile 24 hr storm event User may make changes from any cell I your site which wJt appear under r that is orange or brown n color qy n,4,sr f+ ¢ iv arhroeu to left ID the cells to the immediate right) ........... CdlF,!i in green are calculated for you6, j If you would bke a more p rs J rvdlud select the loco! on alosea( to your e �*ac,. If you do not recgonize any of Ihese SACRAMENTO FAA ARPT Pu 4. win leave this drop down menu at �I rap 6 The average value for the County h be used �x Ci IIFlVp1rAM1'dtiblYA .—, •�•••••�,•••.._...� s1� :. RfA15tx10•�C°4kYrldda"d1p� J;,Adaala 2} Indicate the Sell Type (dropdown Group C Low inftllratien. Sandy clay loam. Project Name: Optional fvdadg4.r la right): Soils Infiltration rate 0.05 to 0.15 inchlhr when wet, Waste Discharge antldi4K4f'on' 4 tqp'.�i Indicate the existingdomtriant (WDIDp Optional no b ilt land Use Type (dropdown menu Wood 8 Grass: <50%ground cover r ,.. ...... _......� . ...______ ........_._....._ _.,......� ... rim Grnik land Use Type (dropdown _— ( 9$0PdCl phut);imp"Mo dodn"'"'. Lawn, Grass, or Pasture covering more than 75% Date: Optional yp ( pdown menu o/the open space lv„n right): v2r SL radoY✓rp N,gsu N,q uai 8ft am �I . Option 0.. sect 5�)tlId ��A[xae: ru Existing Pervious Run ff Curve Nwmds92 Lr;OwD Proposed Development Pervious Runoff Curve Number 14 rva 1iatp Witt 5 6 alershetlArea 5 00 5 V70 J �dtY ptY ftfu P rapct 109V"% 0 62 .gin ,w.... 4 °a u e have ncl d d the BS per;dlq ✓ average 24 h vent- P85 VP c11,LI!TY .... _......... ......ww..... 7'Xrrt1 Yu d IY'nirrdl°Yn4r i silu4 for ¢larffratN la air•bvr iE'%minq 4violfcurve 0.44 In ste{L)s. N Etn]) ^ ........ dg m^ ----^ used forcalculations greater eYlhe b 062 In dA (acres) La a es _— ....... Ij Sq, Ft......� Ac ofs 500 Existing Rooftop Impervious Coverage( - 0��� f1.00 Existing Nan -Rooftop Impervious Coverage 5 Proposed Roelof, Impervious 4s a,,,igp 0 .....�...... ...,...... 0 OU............. Proposed Non -Rooftop l9wWpe1vu,,d 4 n IY rP tlPi 0.00 P e-Protect Runoff Vol (cu ft) 247 Cu Ft. .......................„„.,,,.. . ...,...—...,.,��,...... v ....._ ... _,,.,...... iwi m'adrwrrl Dr , rrr i 7 1 4 d9T,Fa.C" 0.00 ....�. Project -Relayed Runoff Volume g Lu.FI, Increase wlo credits (cu ft) �k[.t:11'.O.S�V,fSk& 0.00 .................................................... Wt'^..,,�Fi.Btid........................Q.Q4�....,....,_ Project -Related Volume Increase 0 Cu,F[. Suhtotal with Credits (cu ft) 0,.00 0 Cu. Ft. 5uhtoPal eunoPP Vbluma Reduct'gn Cerfdll ......... fBff-#'a) Impervious Volume Redu Ion Credlls You have achieved your minimum requirements Volul Cu. Ft. 64arin_,rg ,11 to sell,.rv.�„„y;,„ , dam. 0 Cu. Ft. ..�yw� , ...,. lu.iolgr4tl d{ rM4 W l m 14 tl 4 rNn .,, Cu,,. Ft. Agreement No. 6574 Porous Pavement Credit Worksheet Please fill out a porous pavement credit worksheel for each project sulh-walershed.. Area of Brick without Grout on .j,;..Lr�gn..' ', �.rgx^?pp,, of base with at least 20% void Via¢ .4.,�;r, O ....._ ...------ ...�..........r Area of Brick without Grout on rgq�,�a_gP y4v .« 4,R,1.RPA of base with at least 20% void sjlyaSr,pvR� I_..... .....------- ..........,. Area of Cobbles I s Ih n dee and ove soil lnaht� eeR e. ...... ......... _. —__ Area of Cobbles less Ihan 12 inches deep antl o er soil Area of Reinforced Grass Pavement on 0e„;f,,,,u:,rvyw.�, 7!_n hvh_ of base with at least 20% Area of Reinforced Grass Pavement on wd Y�pµ,N,sp"puu,g',;trypj1, of hose with at leas[ 20 base with at least Pavement on pn,R,VO,p,,;pn M1,J;l�rrfJMo-of base with at least Area of Poured Porous Concrete or Asphalt Pavement with 141ILM 2L4.-rr J-pi of 2 7 v_el base ash... d„sto,ne) ......m_ ., _..__-------------- ..... ...,.,�,...,,.�_,_ Area of Poured Porous Concrete or Asphalt Pavement with 4 to B inches of gravel b— I.wasbPr! sgppgf .. ...._ ........ Area of Poured Porous Concrete or Asphalt Pavement with B to 12 inches of gravel Ant,iAwcriWH tr.IKaa:9—. .......-------- Area of Poured Porous Concrete or Asphalt Pavement with 12 or more inches of :'Using Site Design Techniques to meet Development Slantlartls tar Slannwaler QualityQuality(BASMAA 20D0) •NCDENR Stonnwaler BMP Manual (2007) Agreement No. 6574 Tree Planting Credit Worksheet Please fill out a tree canopy credit worksheet for each project sub -watershed, Tree Canopy Credit Criteria Number of re m o t.d e�orc seen t�. G,._ �5 gITes to be planlcd �orgfftG - rMuart,kaer of trees x U. Number of ro osed deciduous trees to be planted (credit = number of trees x 0. Square feet under an existing tree canopy, that will remain on the property, with an average diameter at 4.5 ft above grade (i.e., diameter at breast height or DBH) is LESS than 12 in diameter.. ........ .. _...... Square feet under an existing tree canopy that will remain on the property, with an average diameter at 4.5 ft above grade (i.e., diameter at breast height or DBH) is 12 in diameter or GREATER. how the trees will be Number of Trees Planted Credit _- 0,00 0.00 credit amount based on credits from Stormwater Quality Design Manual for the Sacramento and South Placer Regions 0.00 0.00 Agreement No. 6574 Downspout Disconnection Credit Worksheet Please fill out a downspout disconnection credit worksheet for each project subwatershed. If you answer yes to all questions, all rooftop area draining to each downspout will be subtracted from your proposed rooftop impervious coverage. Downspout Disconnection Credit Criteria Do downspouts and any extensions extend at least six feet from basement and two feet from a OYes *No crawls ace or concrete slab? O Yes *No Is the area of rooftop connecting to each disconnected downspout 600 square feet or less? O Yes OO No Is the roof runoff from the design storm event fully contained in a raised bed or planter box or does it drain as sheet flow to a landscaped area large enough to contain the roof runoff from the design storm event? O Yes *No The Stream Buffer and/or Ve etated Swale credits will not be taken in this sub -watershed area? of rooftop surface has disconnected Percenta a of existin 0.00' Acres downspouts of rooftop surface has disconnected 50 rc Peenta a of the proposed 0.00 Acres downspouts Return to Calcul for Agreement No. 6574 Impervious Area Disconnection Credit Worksheet Please fill out an impervious area disconnection credit worksheet for each project sub -watershed. If you answer yes to all questions, all non -rooftop impervious surface area will be subtracted from your proposed non -rooftop impervious coverage. Non -Rooftop Disconnection Credit Criteria Response Is the maximum contributing impervious flow path length less than 75 feet or, if equal or O Yes O No greater than 75 feet, is a storage device (e.g. French drain, bioretention area, gravel tren�plemented to achieve the required disconnection length? OO Yes O No Is the impervious area to anyone discharge location less than 5,000 square feet? The Stream Buffer credit will not be taken in this sub -watershed area? OO Yes O No Percents a of existinq 0.00 Acres non-roofto surface area disconnected Percentage of the ro osed' 0.00 Acres non-roofto surface area disconnected 70 r Arrn to Calculator Agreement No. 6574 Green Roof Credit Worksheet Please fill out a greenroof credit worksheet for each project sub -watershed. If you answer yes to all questions, 70% of the greenroof area will be subtracted from your proposed rooftop impervious coverage. Green Roof Credit Criteria Is the roof slope less than 15% or does it have a grid to hold the substrate in 0NIP place until it forms a thick vegetation mat? Has a professional engineer assessed the necessary load reserves and *Too OND designed a roof structure to meet state and local codes? Is the irrigation needed for plant establishment and/or to sustain the green roof evin 01110 during extended dry periods, is the source from stored, recycled, reclaimed, or reused water? Percentage of 0.0 existing 0 Acres rooftop surface area in greenroof Percentage of the 0.0 or000sed 0 Acres rooftop surface area in greenroof Agreement No. 6574 Stream Buffer Credit Worksheet Please fill out a stream buffer credit worksheet for each project sub -watershed. If you answer yes to all questions, you may subtract all impervious surface draining to each stream buffer that has not been addressed using the Downspout and/or Impervious Area Disconnection credits. Stream Buffer Credit Criteria Does runoff enter the floodprone width* or within 500 feet (whichever is larger) of a stream channel as sheet flow**? Is the contributing overland slope 5% or less, or if greater than 5%, is a level spreader used? Is the buffer area protected from vehicle or other traffic barriers to reduce compaction? Will the stream buffer be maintained in an ungraded and uncompacted condition and will the vegetation be maintained in a natural condition? Percentage of impervious surface area draining existing 0.00 Acres into a stream buffer: Percentage of the impervious surface area that will proposed 1 0.00 Acres drain into a stream buffer: Please describe below how the project will ensure that the buffer areas will remain in ungraded and uncompacted condition and that the vegetation will he maintained in a natural condition. * floodprone width is the width at twice the bankfull depth. ** the maximum contributing length shall be 75 feet for impervious area 7 Return to Calculator Agreement No. 6574 Vegetated Swale Credit Worksheet Please fill out a vegetated swale worksheet for each project subwatershed. If you answer yes to all questions, you may subtract all impervious surface draining to each stream buffer that has not been addressed using the Downspout Disconnection credit. Vegetated Swale Credit Criteria Have all vegetated swales been designed in accordance with Treatment Control BMP 30 (TC-30 - Vegetated Swale) from the California Stormwater BMP Handbook, New Development and Redevelopment (available at www.cabmphandbooks. com)? Is the maximum flow velocity for runoff from the design storm event less than or equal to 1.0 foot persecond? O Yes *No O Yes* No Percentage of existing 0.00 Acres of impervious area draining to a vegetated swale Percentage of the pro osed 0.00 Acres of impervious area draining to a vegetated swale Return to Calculator Agreement No. 6574 Rain Barrel/Cistern Credit Worksheet Please fill out a rain barrel/cistern worksheel for each project sub -watershed. Rain BarrelTstern Credit Eriteria Res otat number of rain ba of rain barrel(s)/cistern(s) (in gallons otal capacity rain barrel (s)/cistern (s) (in cu ft) 1 1 accounts for 10% loss Return to Calculator Agreement No. 6574 Please fill out a soil quality worksheet for each project sub -watershed,. Response Will the landscaped area be lined with an impervious membrane? Wpll the soils used for landscaping meet the ideal bulk densities listed in Table 1 below'?' O Yes *No If you answered yes to the question above, and you know the area -weighted bulk density 1.3 within the top 12 inches for soils used for landscaping (in g/cm 3)« , fill in the cell to the right and skip to cell G11. If not select from the drop -down menu in G10. If you answered yes to the question above, but you do not know the exact bulk density, which Sandy Ioams, loams of the soil types in the drop down menu to the right best describes the top 12 inches for soils used for landscaping on 9/cm ) C . What is the average depth of your landscaped soil media meeting the above criteria (inches)? 12 What is the total area of the landscaped areas meeting the above criteria (in acres)? 2.97 Table 1 Sands, loamy sands <1.6 Sandy Ioams, Ioams <1.4 Sandy clay Ioams, Ioams, clay Ioams <1.4 Silts, silt Ioams <1.3 Silt Ioams, silty clay Ioams <1.1 Sandy clays, silty clays, some clay Ioams (35-45% clay) <1.1 Clays (>45% clay) <1.1 USDA NRCS. "Soil Quality Urban Technical Note No.2-Urban Soil Compaction March 2000. htt //'srriNs.tas e. vP i ix� roementffReslsa otn 2.odf To determine how to calculate density see: p ttl :A�, Corr v � p' Jbujkden. dfvs c_ � 4 Return to Calculator Porosity (%) 50.94% Mineral grains in many soils are mainly quartz and feldspar, so 2,65 a good average for particle density. To determine percent porosity, use the formula: Porosity (%) _ (1-Bulk Density/2.65) X 100 Agreement No. 6574 APPENDIX 3 APPENDIX 3 Bioassessment Monitoring Guidelines Bioassessment monitoring is required for projects that meet all of the following criteria: 1. The project is rated Risk Level 3 or LUP Type 3 2. The project directly discharges runoff to a freshwater wadeable stream (or streams) that is either: (a) listed by the State Water Board or USEPA as impaired due to sediment, and/or (b) tributary to any downstream water body that is listed for sediment; and/or have the beneficial use SPAWN & COLD & MIGRATORY 3. Total project -related ground disturbance exceeds 30 acres. For all such projects, the discharger shall conduct bioassessment monitoring, as described in this section, to assess the effect of the project on the biological integrity of receiving waters. Bioassessment shall include: 1. The collection and reporting of specified instream biological data 2. The collection and reporting of specified instream physical habitat data Bioassessment Exception If a site qualifies for bioassessment, but construction commences out of an index period for the site location, the discharger shall: 1. Receive Regional Water Board approval for the sampling exception 2. Make a check payable to: Cal State Chico Foundation (SWAMP Bank Account) or San Jose State Foundation (SWAMP Bank Account) and include the WDID# on the check for the amount calculated for the exempted project. 3. Send a copy of the check to the Regional Water Board office for the site's region 4. Invest 7,500.00 X The number of samples required into the SWAMP program as compensation (upon Regional Water Board approval). 5. Conduct bioassessment monitoring, as described in Appendix 4 6. Include the collection and reporting of specified instream biological data and physical habitat 7. Use the bioassessment sample collection and Quality Assurance & Quality Control (QA/QC) protocols developed by the State of California's Surface Water Ambient Monitoring Program (SWAMP) Site Locations and Fre uenc Macroinvertebrate samples shall be collected both before ground disturbance is initiated and after the project is completed. The "after" sample(s) shall be collected after at least one winter season resulting in surface runoff has transpired after project -related ground disturbance has ceased. "Before" and "after" samples shall be collected both upstream and downstream of the project's 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 discharge. Upstream samples should be taken immediately before the sites outfall and downstream samples should be taken immediately after the outfall (when safe to collect the samples). Samples should be collected for each freshwater wadeable stream that is listed as impaired due to sediment, or tributary to a water body that is listed for sediment. Habitat assessment data shall be collected concurrently with all required macroinvertebrate samples. Index Period(Timing of Sam le Collection) Macroinvertebrate sampling shall be conducted during the time of year (i.e., the "index period") most appropriate for bioassessment sampling, depending on ecoregion. This map is posted on the State Water Board's Website: htt ://w w, aterboards.ca. ov/water issues/pro ram s/stormwatericonstruction.s html Field Method's for Macroinvertebrate Collections In collecting macroinvertebrate samples, the discharger shall use the "Reachwide Benthos (Multi -habitat) Procedure" specified in Standard Operating Procedures for Collecting Benthic Macroinvertebrate Samples and Associated Physical and Chemical Data for Ambient Bioassessments in California (Ode 2007).' Physical - Habitat Assessment Methods The discharger shall conduct, concurrently with all required macroinvertebrate collections, the "Full" suite of physical habitat characterization measurements as specified in Standard Operating Procedures for Collecting Benthic Macroinvertebrate Samples and Associated Physical and Chemical Data for Ambient Bioassessments in California (Ode 2007), and as summarized in the Surface Water Ambient Monitoring Program's Stream Habitat Characterization Form — Full Version. Laboratory Methods Macroinvertebrates shall be identified and classified according to the Standard Taxonomic Effort (STE) Level I of the Southwestern Association of Freshwater Invertebrate Taxonomists (SAFIT),2 and using a fixed -count of 600 organisms per sample. Quality Assurance The discharger or its consultant(s) shall have and follow a quality assurance (QA) plan that covers the required bioassessment monitoring. The QA plan shall include, or be supplemented to include, a specific requirement for external QA checks (i.e., verification of taxonomic identifications and correction of data where 1 This document is available on the Internet at: ht1t + d htt :// wamn .m sl.mlrnl.catstate,edu/w content/u toads/2009/04f wam sop bioassessment collection 020107, df'. The current SAFIT STEs (28 November 2006) list requirements for both the Level I and Level II taxonomic effort, and are located at: it wra av cs�safit htt :1/w w.safil.or /Dorslste Mist. df. When new editions are published by SAFIT, they will supersede all previous editions. All editions will be posted at the State Water Board's SWAMP website. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ Agreement No. 6574 errors are identified). External QA checks shall be performed on one of the discharger's macroinvertebrate samples collected per calendar year, or ten percent of the samples per year (whichever is greater). QA samples shall be randomly selected. The external QA checks shall be paid for by the discharger, and performed by the California Department of Fish and Game's Aquatic Bioassessment Laboratory. An alternate laboratory with equivalent or better expertise and performance may be used if approved in writing by State Water Board staff. Sample Preservation and Archivin The original sample material shall be stored in 70 percent ethanol and retained by the discharger until: 1) all QA analyses specified herein and in the relevant QA plan are completed; and 2) any data corrections and/or re -analyses recommended by the external QA laboratory have been implemented. The remaining subsam led material shall be stored in 70 percent ethanol and retained until completeness checks have been performed according to the relevant QA plan. The identified organisms shall be stored in 70 percent ethanol, in separate glass vials for each final ID taxon. (For example, a sample with 45 identified taxa would be archived in a minimum of 45 vials, each containing all individuals of the identified taxon.) Each of the vials containing identified organisms shall be labeled with taxonomic information (i.e., taxon name, organism count) and collection information (i.e., site name/site code, waterbody name, date collected, method of collection). The identified organisms shall be archived (i.e., retained) by the discharger for a period of not less than three years from the date that all QA steps are completed, and shall be checked at least once per year and "topped off' with ethanol to prevent desiccation. The identified organisms shall be relinquished to the State Water Board upon request by any State Water Board staff. Data Submittal The macroinvertebrate results (i.e., taxonomic identifications consistent with the specified SAFIT STEs, and number of organisms within each taxa) shall be submitted to the State Water Board in electronic format. The State Water Board's Surface Water Ambient Monitoring Program (SWAMP) is currently developing standardized formats for reporting bioassessment data. All bioassessment data collected after those formats become available shall be submitted using the SWAMP formats. Until those formats are available, the biological data shall be submitted in MS -Excel (or equivalent) format.3 The physical/habitat data shall be reported using the standard format titled SWAMP Stream Habitat Characterization Form — Full Version.4 3 Any version of Excel, 2000 or later, may be used. 4 Available at: htt ;// aWW.W ter6oards.ca. ov/v Ater issued r rar /scram idocs/re orts/fDeldtorrns f llvers on0529 0. d f 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ Agreement No. 6574 Invasive Species Prevention In conducting the required bioassessment monitoring, the discharger and its consultants shall take precautions to prevent the introduction or spread of aquatic invasive species. At minimum, the discharger and its consultants shall follow the recommendations of the California Department of Fish and Game to minimize the introduction or spread of the New Zealand mudsnail.5 5 Instructions for controlling the spread of NZ mudsnails, including decontamination methods, can be found at: httr):/iwww.dfa.ca.gov/invasives/mudsnail/ More information on AIS More information on AIS htt ://www,waterboards.ca, ovj ate issue sC ro rams/swa_m /ais/ 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ E Agreement No. 6574 v _x 0 Z W d Q J C� G C E d co C O z I* K C as Q Q Q C � O A X O .E O O m 0 CU C O .a r N N N Q J C •- E d i O d E 0 V v N � d C O L C c0 V ,. ................_- . 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A C O) C C)U~ O O a) Q) U U L LL O L) U > cB -O Q) p Q) cn C �; cn a CDc C o aCi m p,L CO U) U.C.0 to N L L cu F- Q) O O E C (D Y Q) i1 "J LL L L L c C C �Lm-0-tr LL CO O O > O — +V Q) c0 c0 d y a)�.�3�� 3 a1 a� Q zomcn(n(nJ �WW Q-' a' �NM�LnCOf--cn000) Cl) 0 Agreement No.6574 « X 0 2 w 0- a_ � : 0 . 3 � CN � � k q � , C. ;o 2� . . E § U) J% / OW . � . c 0 c 0 ¥ Q q k/ kE k# 7 . cn . R 2� Q: E / j � / j c U) / IL 0) / a §I § B kCD 2 § 0 \ kcn--a Co / _0k f 5 E 2 % % R E a Cl) k (D k C) _ � $ ° 2§2 y E co �// / CL U �± k 2 0 / cu k 2 CO ƒ w � U o w o �- I- Agreement No. 6574 A01I97E4P APPENDIX 5: Glossary Active Areas of Construction All areas subject to land surface disturbance activities related to the project including, but not limited to, project staging areas, immediate access areas and storage areas. All previously active areas are still considered active areas until final stabilization is complete. [The construction activity Phases used in this General Permit are the Preliminary Phase, Grading and Land Development Phase, Streets and Utilities Phase, and the Vertical Construction Phase.] Active Treatment System (ATS) A treatment system that employs chemical coagulation, chemical flocculation, or electrocoagulation to aid in the reduction of turbidity caused by fine suspended sediment. Acute Toxicity Test A chemical stimulus severe enough to rapidly induce a negative effect; in aquatic toxicity tests, an effect observed within 96 hours or less is considered acute. Air Deposition Airborne particulates from construction activities. Approved Signatory A person who has been authorized by the Legally Responsible Person to sign, certify, and electronically submit Permit Registration Documents, Notices of Termination, and any other documents, reports, or information required by the General Permit, the State or Regional Water Board, or U.S. EPA. The Approved Signatory must be one of the following: For a corporation or limited liability company: a responsible corporate officer. For the purpose of this section, a responsible corporate officer means: (a) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision -making functions for the corporation or limited liability company; or (b) the manager of the facility if authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; 2. For a partnership or sole proprietorship: a general partner or the proprietor, respectively; 3. For a municipality, State, Federal, or other public agency: a principal executive officer, ranking elected official, city manager, council president, or any other authorized public employee with managerial responsibility over the 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 R»104I9]E0 construction or land disturbance project (including, but not limited to, project manager, project superintendent, or resident engineer); 4. For the military: any military officer or Department of Defense civilian, acting in an equivalent capacity to a military officer, who has been designated; 5. For a public university: an authorized university official; 6. For an individual: the individual, because the individual acts as both the Legally Responsible Person and the Approved Signatory; or 7. For any type of entity not listed above (e.g. trusts, estates, receivers): an authorized person with managerial authority over the construction or land disturbance project. Beneficial Uses As defined in the California Water Code, beneficial uses of the waters of the state that may be protected against quality degradation include, but are not limited to, domestic, municipal, agricultural and industrial supply; power generation; recreation; aesthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife, and other aquatic resources or preserves. Best Available Technology Economically Achievable (BAT) As defined by USEPA, BAT is a technology -based standard established by the Clean Water Act (CWA) as the most appropriate means available on a national basis for controlling the direct discharge of toxic and nonconventional pollutants to navigable waters. The BAT effluent limitations guidelines, in general, represent the best existing performance of treatment technologies that are economically achievable within an industrial point source category or subcategory. Best Conventional Pollutant Control Technology (BCT) As defined by USEPA, BCT is a technology -based standard for the discharge from existing industrial point sources of conventional pollutants including biochemical oxygen demand (BOD), total suspended sediment (TSS), fecal coliform, pH, oil and grease. Best Professional Judgment (BPJ) The method used by permit writers to develop technology -based NPDES permit conditions on a case -by -case basis using all reasonably available and relevant data. Best Management Practices (BMPs) BMPs are scheduling of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the discharge of pollutants. BMPs also include treatment requirements, operating procedures, 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 APPENDIX 5 and practices to control site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. Chain of Custody (COC) Form used to track sample handling as samples progress from sample collection to the analytical laboratory. The COC is then used to track the resulting analytical data from the laboratory to the client. COC forms can be obtained from an analytical laboratory upon request. Coagulation The clumping of particles in a discharge to settle out impurities, often induced by chemicals such as lime, alum, and iron salts. Common Plan of Development Generally a contiguous area where multiple, distinct construction activities may be taking place at different times under one plan. A plan is generally defined as any piece of documentation or physical demarcation that indicates that construction activities may occur on a common plot. Such documentation could consist of a tract map, parcel map, demolition plans, grading plans or contract documents. Any of these documents could delineate the boundaries of a common plan area. However, broad planning documents, such as land use master plans, conceptual master plans, or broad -based CEQA or NEPA documents that identify potential projects for an agency or facility are not considered common plans of development. Daily Average Discharge The discharge of a pollutant measured during any 24-hour period that reasonably represents a calendar day for purposes of sampling. For pollutants with limitations expressed in units of mass, the daily discharge is calculated as the total mass of the pollutant discharged during the day. For pollutants with limitations expressed in other units of measurement (e.g., concentration) the daily discharge is calculated as the average measurement of the pollutant throughout the day (40 CFR 122.2). In the case of pH, the pH must first be converted from a log scale. Debris Litter, rubble, discarded refuse, and remains of destroyed inorganic anthropogenic waste. Direct Discharge A discharge that is routed directly to waters of the United States by means of a pipe, channel, or ditch (including a municipal storm sewer system), or through surface runoff. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 ,-010C Discharger The Legally Responsible Person (see definition) or entity subject to this General Permit. Dose Rate (for ATS) In exposure assessment, dose (e.g. of a chemical) per time unit (e.g. mg/day), sometimes also called dosage. Drainage Area The area of land that drains water, sediment, pollutants, and dissolved materials to a common outlet. Effluent Any discharge of water by a discharger either to the receiving water or beyond the property boundary controlled by the discharger. Effluent Limitation Any numeric or narrative restriction imposed on quantities, discharge rates, and concentrations of pollutants which are discharged from point sources into waters of the United States, the waters of the contiguous zone, or the ocean. Erosion The process, by which soil particles are detached and transported by the actions of wind, water, or gravity. Erosion Control BMPs Vegetation, such as grasses and wildflowers, and other materials, such as straw, fiber, stabilizing emulsion, protective blankets, etc., placed to stabilize areas of disturbed soils, reduce loss of soil due to the action of water or wind, and prevent water pollution. Field Measurements Testing procedures performed in the field with portable field-testing kits or meters. Final Stabilization All soil disturbing activities at each individual parcel within the site have been completed in a manner consistent with the requirements in this General Permit. First Order Stream Stream with no tributaries. Flocculants Substances that interact with suspended particles and bind them together to form flocs. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 4 Agreement No. 6574 APPENDIX 5 Good Housekeeping BMPs BMPs designed to reduce or eliminate the addition of pollutants to construction site runoff through analysis of pollutant sources, implementation of proper handling/disposal practices, employee education, and other actions. Grading Phase (part of the Grading and Land Development Phase) Includes reconfiguring the topography and slope including; alluvium removals; canyon cleanouts; rock undercuts; keyway excavations; land form grading; and stockpiling of select material for capping operations. Hydromodification Hydromodification is the alteration of the hydrologic characteristics of coastal and non -coastal waters, which in turn could cause degradation of water resources. Hydromodification can cause excessive erosion and/or sedimentation rates, causing excessive turbidity, channel aggradation and/or degradation. Identified Organisms Organisms within a sub -sample that is specifically identified and counted. Inactive Areas of Construction Areas of construction activity that are not active and those that have been active and are not scheduled to be re -disturbed for at least 14 days. Index Period The period of time during which bioassessment samples must be collected to produce results suitable for assessing the biological integrity of streams and rivers. Instream communities naturally vary over the course of a year,and sampling during the index period ensures that samples are collected during a time frame when communities are stable so that year-to-year consistency is obtained. The index period approach provides a cost-effective alternative to year round sampling. Furthermore, sampling within the appropriate index period will yield results that are comparable to the assessment thresholds or criteria for a given region, which are established for the same index period. Because index periods differ for different parts of the state, it is essential to know the index period for your area. K Factor The soil erodibility factor used in the Revised Universal Soil Loss Equation (RUSLE). It represents the combination of detachability of the soil, runoff potential of the soil, and the transportability of the sediment eroded from the soil Legally Responsible Person The Legally Responsible Person (LRP) will typically be the project proponent. The categories of persons or entities that are eligible to serve as the LRP are set forth below. For any construction or land disturbance project where multiple persons or entities are eligible to serve as the LRP, those persons or entities 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 5 Agreement No. 6574 shall select a single LRP. In exceptional circumstances, a person or entity that qualifies as the LRP may provide written authorization to another person or entity to serve as the LRP. In such a circumstance, the person or entity that provides the authorization retains all responsibility for compliance with the General Permit. Except as provided in category 2(d), a contractor who does not satisfy the requirements of any of the categories below is not qualified to be an LRP. The following persons or entities may serve as an LRP: 1. A person, company, agency, or other entity that possesses a real property interest (including, but not limited to, fee simple ownership, easement, leasehold, or other rights of way) in the land upon which the construction or land disturbance activities will occur for the regulated site. 2. In addition to the above, the following persons or entities may also serve as an LRP: a. For linear underground/overhead projects, the utility company, municipality, or other public or private company or agency that owns or operates the LUP; b. For land controlled by an estate or similar entity, the person who has day- to-day control over the land (including, but not limited to, a bankruptcy trustee, receiver, or conservator); c. For pollution investigation and remediation projects, any potentially responsible party that has received permission to conduct the project from the holder of a real property interest in the land; or d. For U.S. Army Corp of Engineers projects, the U.S. Army Corps of Engineers may provide written authorization to its bonded contractor to serve as the LRP, provided, however, that the U.S. Army Corps of Engineers is also responsible for compliance with the general permit, as authorized by the Clean Water Act or the Federal Facilities Compliance Act. Likely Precipitation Event Any weather pattern that is forecasted to have a 50% or greater chance of producing precipitation in the project area. The discharger shall obtain likely precipitation forecast information from the National Weather Service Forecast Office (e.g., by entering the zip code of the project's location at htt ://www.srh,noaa. ov/folrecast). Maximum Allowable Threshold Concentration (MATC) The allowable concentration of residual, or dissolved, coagulant/flocculant in effluent. The MATC shall be coagulant/flocculent-specific, and based on toxicity 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 6 Agreement No. 6574 APPENDIX 5 testing conducted by an independent, third -party laboratory. A typical MATC would be: The MATC is equal to the geometric mean of the NOEC (No Observed Effect Concentration) and LOEC (Lowest Observed Effect Concentration) Acute and Chronic toxicity results for most sensitive species determined for the specific coagulant. The most sensitive species test shall be used to determine the MATC. Natural Channel Evolution The physical trend in channel adjustments following a disturbance that causes the river to have more energy and degrade or aggrade more sediment. Channels have been observed to pass through 5 to 9 evolution types. Once they pass though the suite of evolution stages, they will rest in a new state of equilibrium. Non -Storm Water Discharges Discharges are discharges that do not originate from precipitation events. They can include, but are not limited to, discharges of process water, air conditioner condensate, non -contact cooling water, vehicle wash water, sanitary wastes, concrete washout water, paint wash water, irrigation water, or pipe testing water. Non -Visible Pollutants Pollutants associated with a specific site or activity that can have a negative impact on water quality, but cannot be seen though observation (ex: chlorine). Such pollutants being discharged are not authorized. Numeric Action Level (NAL) Level is used as a warning to evaluate if best management practices are effective and take necessary corrective actions. Not an effluent limit. Original Sample Material The material (i.e., macroinvertebrates, organic material, gravel, etc.) remaining after the subsample has been removed for identification. pH Unit universally used to express the intensity of the acid or alkaline condition of a water sample. The pH of natural waters tends to range between 6 and 9, with neutral being 7. Extremes of pH can have deleterious effects on aquatic systems. Post -Construction BMPs Structural and non-structural controls which detain, retain, or filter the release of pollutants to receiving waters after final stabilization is attained. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 7 Agreement No. 6574 APPENDIX 5 Preliminary Phase (Pre -Construction Phase - Part of the Grading and Land Development Phase) Construction stage including rough grading and/or disking, clearing and grubbing operations, or any soil disturbance prior to mass grading. Project Qualified SWPPP Developer Individual who is authorized to develop and revise SWPPPs. Qualified SWPPP Practitioner Individual assigned responsibility for non -storm water and storm water visual observations, sampling and analysis, and responsibility to ensure full compliance with the permit and implementation of all elements of the SWPPP, including the preparation of the annual compliance evaluation and the elimination of all unauthorized discharges. Qualifying Rain Event Any event that produces 0.5 inches or more precipitation with a 48 hour or greater period between rain events. R Factor Erosivity factor used in the Revised Universal Soil Loss Equation (RUSLE). The R factor represents the erosivity of the climate at a particular location. An average annual value of R is determined from historical weather records using erosivity values determined for individual storms. The erosivity of an individual storm is computed as the product of the storm's total energy, which is closely related to storm amount, and the storm's maximum 30-minute intensity. Rain Event Action Plan (REAP) Written document, specific for each rain event, that when implemented is designed to protect all exposed portions of the site within 48 hours of any likely precipitation event. Remaining Sub sampled Material The material (e.g., organic material, gravel, etc.) that remains after the organisms to be identified have been removed from the subsample for identification. (Generally, no macroinvertebrates are present in the remaining subsampled material, but the sample needs to be checked and verified using a complete Quality Assurance (QA) plan) Routine Maintenance Activities intended to maintain the original line and grade, hydraulic capacity, or original purpose of a facility. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 8 Agreement No. 6574 APPENDIX 5 Runoff Control BMPs Measures used to divert runon from offsite and runoff within the site. Run-on Discharges that originate offsite and flow onto the property of a separate project site. Revised Universal Soil Loss Equation (RUSLE) Empirical model that calculates average annual soil loss as a function of rainfall and runoff erosivity, soil erodibility, topography, erosion controls, and sediment controls. Sampling and Analysis Plan Document that describes how the samples will be collected, under what conditions, where and when the samples will be collected, what the sample will be tested for, what test methods and detection limits will be used, and what methods/procedures will be maintained to ensure the integrity of the sample during collection, storage, shipping and testing (i.e., quality assurance/quality control protocols). Sediment Solid particulate matter, both mineral and organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water, gravity, or ice and has come to rest on the earth's surface either above or below sea level. Sedimentation Process of deposition of suspended matter carried by water, wastewater, or other liquids, by gravity. It is usually accomplished by reducing the velocity of the liquid below the point at which it can transport the suspended material. Sediment Control BMPs Practices that trap soil particles after they have been eroded by rain, flowing water, or wind. They include those practices that intercept and slow or detain the flow of storm water to allow sediment to settle and be trapped (e.g., silt fence, sediment basin, fiber rolls, etc.). Settleable Solids (SS) Solid material that can be settled within a water column during a specified time frame. It is typically tested by placing a water sample into an Imhoff settling cone and then allowing the solids to settle by gravity for a given length of time. Results are reported either as a volume (mL/L) or a mass (mg/L) concentration. Sheet Flow Flow of water that occurs overland in areas where there are no defined channels where the water spreads out over a large area at a uniform depth. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 9 Agreement No. 6574 APPENDIX 5 Site Soil Amendment Any material that is added to the soil to change its chemical properties, engineering properties, or erosion resistance that could become mobilized by storm water. Streets and Utilities Phase Construction stage including excavation and street paving, lot grading, curbs, gutters and sidewalks, public utilities, public water facilities including fire hydrants, public sanitary sewer systems, storm sewer system and/or other drainage improvements. Structural Controls Any structural facility designed and constructed to mitigate the adverse impacts of storm water and urban runoff pollution Suspended Sediment Concentration (SSC) The measure of the concentration of suspended solid material in a water sample by measuring the dry weight of all of the solid material from a known volume of a collected water sample. Results are reported in mg/L. Total Suspended Solids (TSS) The measure of the suspended solids in a water sample includes inorganic substances, such as soil particles and organic substances, such as algae, aquatic plant/animal waste, particles related to industrial/sewage waste, etc. The TSS test measures the concentration of suspended solids in water by measuring the dry weight of a solid material contained in a known volume of a sub -sample of a collected water sample. Results are reported in mg/L. Toxicity The adverse response(s) of organisms to chemicals or physical agents ranging from mortality to physiological responses such as impaired reproduction or growth anomalies. Turbidity The cloudiness of water quantified by the degree to which light traveling through a water column is scattered by the suspended organic and inorganic particles it contains. The turbidity test is reported in Nephelometric Turbidity Units (NTU) or Jackson Turbidity Units (JTU). Vertical Construction Phase The Build out of structures from foundations to roofing, including rough landscaping. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 10 Agreement No. 6574 APPENDIX 5 Waters of the United States Generally refers to surface waters, as defined by the federal Environmental Protection Agency in 40 C.F.R. § 122.2.1 Water Quality Objectives (WQO) Water quality objectives are defined in the California Water Code as limits or levels of water quality constituents or characteristics, which are established for the reasonable protection of beneficial uses of water or the prevention of nuisance within a specific area. ' The application of the definition of "waters of the United States" may be difficult to determine; there are currently several judicial decisions that create some confusion. If a landowner is unsure whether the discharge must be covered by this General Permit, the landowner may wish to seek legal advice. 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 11 Agreement No. 6574 APPENDIX 6 APPENDIX 6: Acronym List ASBS Areas of Special Biological Significance ASTM American Society of Testing and Materials; Standard Test Method for Particle -Size Analysis of Soils ATS Active Treatment System BASMAA Bay Area Storm water Management Agencies Association BAT Best Available Technology Economically Achievable BCT Best Conventional Pollutant Control Technology BMP Best Management Practices BOD Biochemical Oxygen Demand BPJ Best Professional Judgment CAFO Confined Animal Feeding Operation CCR California Code of Regulations CEQA California Environmental Quality Act CFR Code of Federal Regulations CGP NPDES General Permit for Storm Water Discharges Associated with Construction Activities CIWQS California Integrated Water Quality System CKD Cement Kiln Dust COC Chain of Custody CPESC Certified Professional in Erosion and Sediment Control CPSWQ Certified Professional in Storm Water Quality CSMP Construction Site Monitoring Program CTB Cement Treated Base CTR California Toxics Rule CWA Clean Water Act CWC California Water Code CWP Center for Watershed Protection DADMAC Diallyldimethyl-ammonium chloride DDNR Delaware Department of Natural Resources DFG Department of Fish and Game DHS Department of Health Services DWQ Division of Water Quality EC Electrical Conductivity ELAP Environmental Laboratory Accreditation Program EPA Environmental Protection Agency ESA Environmentally Sensitive Area ESC Erosion and Sediment Control HSPF Hydrologic Simulation Program Fortran JTU Jackson Turbidity Units LID Low Impact Development LOEC Lowest Observed Effect Concentration LRP Legally Responsible Person LUP Linear Underground/Overhead Projects 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 Agreement No. 6574 APPENDIX 6 MATC Maximum Allowable Threshold Concentration MDL Method Detection Limits MRR Monitoring and Reporting Requirements MS4 Municipal Separate Storm Sewer System MUSLE Modified Universal Soil Loss Equation NAL Numeric Action Level NEL Numeric Effluent Limitation NICET National Institute for Certification in Engineering Technologies NOAA National Oceanic and Atmospheric Administration NOEC No Observed Effect Concentration NOI Notice of Intent NOT Notice of Termination NPDES National Pollutant Discharge Elimination System NRCS Natural Resources Conservation Service NTR National Toxics Rule NTU Nephelometric Turbidity Units O&M Operation and Maintenance PAC Polyaluminum chloride PAM Polyacrylamide PASS Polyaluminum chloride Silica/sulfate POC Pollutants of Concern Pop Probability of Precipitation POTW Publicly Owned Treatment Works PRDs Permit Registration Documents PWS Planning Watershed QAMP Quality Assurance Management Plan QA/QC Quality Assurance/Quality Control REAP Rain Event Action Plan Regional Board Regional Water Quality Control Board ROWD Report of Waste Discharge RUSLE Revised Universal Soil Loss Equation RW Receiving Water SMARTS Storm water Multi Application Reporting and Tracking System SS Sctticablc Solids SSC Suspended Sediment Concentration SUSMP Standard Urban Storm Water Mitigation Plan SW Storm Water SWARM Storm Water Annual Report Module SWAMP Surface Water Ambient Monitoring Program SWMM Storm Water Management Model SWMP Storm Water Management Program SWPPP Storm Water Pollution Prevention Plan TC Treatment Control TDS Total Dissolved Solids 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 2 Agreement No. 6574 APPENDIX 6 TMDL Total Maximum Daily Load TSS Total Suspended Solids USACOE U.S. Army Corps of Engineers USC United States Code USEPA United States Environmental Protection Agency USGS United States Geological Survey WDID Waste Discharge Identification Number WDR Waste Discharge Requirements WLA Waste Load Allocation WET Whole Effluent Toxicity WRCC Western Regional Climate Center WQBEL Water Quality Based Effluent Limitation WQO Water Quality Objective WQS Water Quality Standard 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 3 Agreement No. 6574 APPENDIX 7 APPENDIX 7: State and Regional Water Resources Control Board Contacts NORTH COAST REGION (1) 5550 Skylane Blvd, Ste, A Santa Rose, CA 95403 (707) 576-2220 FAX: (707)523-0135 SAN FRANCISCO BAY REGION (2) 1515 Clay Street, Ste. 1400 Oakland, CA 94612 (510) 622-2300 FAX: (510) 622-2640 CENTRAL COAST REGION (3) 895 Aerovista Place, Ste 101 San Luis Obispo, CA 93401 (805) 549-3147 FAX: (805) 543-0397 LOS ANGELES REGION (4) 320 W. 4" Street, Ste. 200 Los Angeles, CA 90013 (213) 576-6600 FAX: (213) 576-6640 CENTRAL VALLEY REGION (5S) 11020 Sun Center Dr., #200 Rancho Cordova, CA 95670-6114 (916) 464-3291 FAX: (916) 464-4645 FRESNO BRANCH OFFICE (5F) 1685 E St.. � Fresno, CA 93706 (559) 445-5116 FAX: (559) 445-5910 REDDING BRANCH OFFICE (5R) 364 Knollcrest Drive, Ste. 205 Redding, CA 96002 (530)224-4845 FAX: (530) 224-4857 L 2009-0009-DWQ as amended by 2010-0014-DWQ & 2012-0006-DWQ 1 LAHONTAN REGION (6 SLT) 2501 Lake Tahoe Blvd. South Lake Tahoe, CA 96150 (530) 542-5400 FAX: (530) 544-2271 VICTORVILLE OFFICE (6V) 14440 Civic Drive, Ste. 200 Victorville, CA 92392-2383 (760) 241-6583 FAX: (760) 241-7308 COLORADO RIVER BASIN REGION (7) 73-720 Fred Waring Dr,,, Ste. 100 Palm Desert, CA 92260 (760) 346-7491 FAX: (760) 341-6820 SANTA ANA REGION (8) 3737 Main Street, Ste. 500 Riverside, CA 92501-3339 Phone (951) 782-4130 FAX: (951) 781-6288 SAN DIEGO REGION (9) 9174 Sky Park Court, Ste. 100 San Diego, CA 92123-4340 (858) 467-2952 FAX: (858) 571-6972 STATE WATER BOARD PO Box 1977 Sacramento, CA 95812-1977 stormwater@waterboards.ca.gov Agreement No. 6574 APPENDIX EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT PROJECT NO.: PW 23-02 EL SEGUNDO BOULEVARD IMPROVEMENT PLANS Agreement No. 6574 3 Y < - o wz w°O _, Oy z ?w w ¢ozy a o >�� J~ ro¢in ax -°"fu°o -<w o� 3<zo >- 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IN -STREET FLASHERS. w ' PROTECT IN PLACE IN -STREET v FLASHERS. U J Q O ale U CURB RAMP REPLACEMENT (CASE B) UTAH AVENUE CURB RAMP REPLACEMENT (CASE B) CURB RAMP REPLACEMENT (CASE B) ALASKA AVENUE '�-06 M/�� CURB RAMP REPLACEMENT (CASE B) 100 E. Thousand Oaks Blvd Suite 105 ENGINEERS INC Thousand Oaks, CA 91360 ENGINEERING I SURVEYING Phone: 805-648-4840 CONSTRUCTION MANAGEMENT www.mnsongineers.com CITY OF EL SEGUNDO EL SEGUNDO BOULEVARD IMPROVEMENTS PROJECT ALTERNATIVE BID CURB RAMPS 1500' 0' 1500' SCALE: 1" = 1500,