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MONITQRING VERIFICATION IDEND IMPACT RELATED MITIGATION MEASURE lmptementation Monitoring and Timing Signature Date Enti Verification Enti R uirements Impac~'~Z: Precise Pian-Facilitated Mitigation 11-2. Reduce ground-borne Individual City Condition of grading permit Ground-erne Vibration Levels. Precise vibration levels during individual, site- project issuance; field verify Plan implementation-related individual project specific future project demolition and applicants implementation during grading dernolitio~nd construction activities could construction periods by incorporafing and construction. generate pybstanifal vibration (e.g., from conditions in individual project demolition potential pile driving} in the project vicinity. and construction contractor agreements These po~ible intermittent and short-term that stipulate the foAowing ground-borne . effects resent a potentially signifrcant vibration abatement measures: impact. • Restrict vibration-generating activity to between the hours of 7:00 AM and 7:00 PM, Monday through Friday. Prohibit such activity on weekends and holidays. • Notify occupants of land uses located within 200 feet of pile-driving activities of the project construction schedule in writing. • Investigate in consultation with City staff possible pre-drilling of pile holes as a means of minimizing the number of percussions required to seat the pile. Implementation of these measures vdould reduce this potential intermittent and short- term Precise Plan vibration impact to a less-tha»-sf n~cant Level. Impact 11-3: Potential Exposure of New, Mitigation 11-3. Site-specific noise studies Individual City Condition of building permit Precise Plan-Facilitated Noise-Sensitive consistent with the requirements of the h ll b d SBC project licants a issuance; field verify implementation during Development to Noise Levels Exceeding } s a e e ( State Building Go pp construction Standards. The proposed Precise Plan conducted for all new Precise Plan- . would facilitate new residental development facilitated residential uses in these in downtown Redwood City. Assoaated new identified potential land uselnoise residents, employees, and visitors could be compatibility impact areas to identify exposed to various existing and projected appropriate noise reduction measures to be noise sources, including traffic and Caltrain included in project Snal design. Each noise operations. The compatibility of the Draft study must be submitted to and approved Prec~ Plan proposed land uses with the by the Redwood City Building Department ti l f id exrst~rg and projected noise environment has en a a res prior to City issuance o been~Vdlraated based on the Redwood City building permit. Identified noise insulation Noisi##~delines for Land Use Planning (see measures may include: EIR ~b 11.4). New residential devnt is considered normally Site planning to minimize noise in acceptable in noise environments of less than shared residentai outdoor activity 55 dBA CNEL, and new cammeraai or retail areas by iocating the areas behind Page 26 U:IMy DocumentslDowntown Precise War`•CC sfaHreportslCC 3.12.doct3.12.07 ExhibitsiAttachment A mrt.mo.~itoring checklist 655.doc