24project would result in increased noise levels at the project site
compared to existing ambient noise levels at the project site due
to the proposed increase in activities on the project site. However,
noise generated by the proposed project would not be considered
substantial as it would not exceed noise limits established by the
El Segundo Municipal Code.
Because the proposed project would result in the construction of
new residences on a site located within the noise impact boundary
for LAX, the proposed project is subject to El Segundo Municipal
Code § 13 -1 -4 (Residential Noise Insulation Standards) which
requires that interior noise levels not exceed 45 dBA CNEL within
new residences. To ensure that the project complies with the El
Segundo Municipal Code, mitigation measure MM4.3 -5 would be
implemented, which requires the project applicant to submit
architectural plans and a detailed acoustical analysis study
(demonstrating that interior noise levels in all residential units are
45 dBA CNEL or less) for review and approval by the Planning
and Building Safety Department. Therefore, the proposed project
would not expose new residents to interior noise levels in excess
of established standards and a less- than - significant impact would
occur with incorporation of mitigation measure MM4.3 -5.
(3) Groundborne Vibration and Noise (Construction and
Operation). Temporary construction activities at the proposed
project site could expose nearby off -site sensitive receptors
(surrounding residential uses) to elevated levels of noise and
groundborne vibration due to the use of heavy pieces of
construction equipment. However, implementation of mitigation
measures MM4.3 -1 through MM4.3 -4 described above would
reduce the potential for significant levels of groundborne vibration
and noise. Operation of Option 1 or Option 2 of the proposed
project would not generate significant levels of groundborne
vibration or noise in consideration of the types of uses proposed
and operational activities, in general. Therefore, impacts would be
less than significant with incorporation of mitigation measures
MM4.3 -1 through MM4.3 -4.
b) Mitigations:
MM4.3 -1 The developer's contractor must refrain from engaging in
all construction - related activities, including the delivery of
construction materials, the loading and unloading of construction
equipment, starting the engine ignition, and the repair and
servicing of construction equipment and vehicles between the
hours of 6:00 PM and 7:00 AM Monday through Saturday, or at any
time on Sunday or a federal holiday. Construction noise levels
must not exceed the noise and vibration standard set in El
Segundo Municipal Code §§ 7- 2 -4(C) and 7- 2- 10(D). If
construction activities result in the generation of noise that
exceeds the noise and vibration standards set forth in the El
Segundo Municipal Code, a noise permit must be obtained from
14