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MONITORING VERIFICATION <br /> IDENTIFIED IMPACT RELATED MITIGATION MEASURE Implementation Monitoring and Timing Signature Date <br /> PerFomlanCe Criteria Entit Veri[ication Entit Re uireme�ts <br /> Exposure of persons to excessive • Restrict vibration-generating <br /> ground-borne vibration would represent activity to between the hours of <br /> a potentfaNy slgnificant impacf. 7:00 AM and 5:00 PM. Monday <br /> through Friday. Prohibit such <br /> activity on weekends and <br /> holidays. <br /> + Notify occupants of land uses <br /> located within 200 feet of pile- <br /> driving activities of the project <br /> construction schedule in writing. <br /> ■ Investigate in consuitation with <br /> City staff possible pre-drilling of <br /> pile holes as a means of <br /> minimizing ihe number of <br /> percussions required to seat the <br /> pile. <br /> ■ Conduci a pre-construction site <br /> survey documenting the condition <br /> of any historic structure located <br /> within 200 feet of pile driviny <br /> activities. <br /> ■ Monitor pile driving vibration <br /> levels to insure vibration does not <br /> exceed appropriate thresholds for <br /> the building (5 mm/sec (0.20 <br /> inches/sec) ppv for struc[urally <br /> sound buiidings and 2 mm/sec <br /> (0.08 incheslsec} ppv for historic <br /> buildings. <br /> This measure wouid reduce impacts <br /> related to exposure to temporary <br /> consiruction-related ground-borne <br /> vibration to a less-fhan-significant <br /> level. <br /> Impact 11-4: Temporary Mitigation 11-4. Reduce demolition Individual project City Condition of <br /> Construction Noise Impacts. and construction noise impacts on appiicants grading permit <br /> Demolition and construction activities adjacent uses by imposing conditions issuance; field <br /> wilhin the DPP area cou{d temporarily of approval on all future projects verify <br /> increase noise levels at nearb involving demolition and construction implementation <br /> W <br /> n <br /> p yge � C:lQocuments and SettingsltpassanisilLoca! Settingslremporary Intemet Files10LK491mmcht (10671).doc <br />