8J Consent 2011 0404 - Laserfiche WebLink

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LEA ASSOCIATES. INC. CEQA INITIAL STUDY /MITIGATED NEOATIYE DECLARATION MARCH 1011 PR!DA STREET PIP! BRIDGES UPGRADE SAN LEANDRO. CALIFORNIA Short - Term (Construction) Impacts. Construction of the proposed project would require grading and earthwork activities that could generate noise levels that exceed established standards. Although these activities could result in infrequent periods of high noise, this noise would not be sustained and would occur only during the temporary construction period. Compliance with applicable provisions of the San Leandro General Plan (City of San Leandro 2002) and implementation of the following mitigation measure would reduce potential impacts related to construction noise to a less than significant level. Mitigation Measure NOISE -1: The Contractor shall implement the following measures to reduce short-term construction related noise impacts from the proposed project: • Noise - generating activities, including truck traffic coming to and from the site for any purpose, shall be limited to daytime. weekday. non - holiday hours (7:00 a.m. to 6:00 p.m.). Any special circumstances that necessitate performance of construction work outside the hours and days specified shall require that the contractor request and the City's project manager approve such work. • During all project site excavation and on -site grading, the project contractors shall equip all construction equipment, fixed or mobile, with properly operating and maintained mufflers consistent with manufacturers' standards. • The construction contractor shall place all stationary construction equipment so that emitted noise is directed away from sensitive receptors nearest the project site. Sensitive receptors in the project area include residences to the south. • To the extent practicable, the construction contractor shall locate equipment staging in areas that will create the greatest distance between construction - related noise sources and noise- sensitive receptors (nearest residences) during all project construction. (LTS) b) Exposure of persons to or generation of excessive ground borne vibration or ground borne noise levels? • Less Than Significant Impact. Development of the proposed project would not result in excessive ground borne vibration or noise levels. Relatively minor vibrations may occur from the use of trucks or other construction equipment used for excavation and earthwork. However, the ground borne vibration from such equipment would be relatively minor, intermittent, short-term, and restricted to daytime hours. c) .4 substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project? No Impact. As described above, ambient noise levels in the project vicinity would be the same as occurs under existing conditions. No permanent increase in ambient noise levels is expected as a result of project implementation. d) A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? P:1EGI080110EQA\Preda_FINAL_IS- MND.doc (03/2811 I) 45