3A Public Hearing 2010 0503 - Laserfiche WebLink

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HAZ-1.1 above and Mitigation Measure HAZ-2.1, which requires that any certifications of completion required and issued by RWQCB shall be recorded as a deed restriction for the property. d. Noise: (1) Impact NO -1 finds that construction of the proposed project would not result in a significant increase in temporary construction noise levels for off-site sensitive receptors. However, sensitive receptors would be located within the project site that could be exposed to temporary increases in noise levels associated with construction of the project. This impact will be mitigated through the implementation of Mitigation Measure NO -1.1, which requires implementation of construction best management practices to reduce construction noise, including provisions for resolving any noise disturbances that might arise during later construction phases. (2) Impact NO -2 finds that construction activities, including pile driving used during construction of the Mixed -Use Retail Development could generate excessive groundborne vibration at nearby structures; and build -out of the Kaiser Medical Center could exceed the annoyance thresholds. This impact will be mitigated by Mitigation Measure NO -1.1 above and Mitigation Measure NO -2.1, which requires the project applicant to complete a site-specific engineering assessment for the Mixed -Use Retail and incorporate recommended vibration reduction measures into the design and construction of the proposed project to assure that there would be no potential for structural damage to existing buildings within 100 feet of any proposed pile driving. (3) Impact NO -3 finds that new on-site sensitive receptors at the Kaiser Medical Center and the Mixed -Use Retail Development could be exposed to noise above acceptable levels for multi -family residential units and that build -out of the Kaiser Medical Center would locate hospital facilities closer to I-880, thereby potentially exposing sensitive receptors to noise above acceptable levels. This impact will be reduced by Mitigation Measure NO -3.1, which requires more detailed acoustical analysis for multi -family housing or hotel uses and incorporation of site planning and architectural design measures that reduce the exposure of future building occupants to traffic noise; and Mitigation Measure NO -3.2, which requires the project applicant to submit to the City noise analyses prepared by a qualified acoustical engineer that demonstrate the proposed hospital structures will include adequate exterior -to - interior noise reduction features to meet interior noise level standards of 45 dBA CNEL for patient areas. (4) Impact NO -4 finds that noise generated by mechanical equipment located throughout the project site could have a potentially significant impact on on- site sensitive receptors. This impact would be reduced by Mitigation Measure NO -4, which requires the project sponsors to shield or enclose rooftop and other mechanical equipment and demonstrate through an acoustical analysis -7-