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7A <br />Page 43 <br />• Construction Traffic. Route all construction traffic to and from the construction <br />sites via designated truck routes where possible. Prohibit construction-related <br />heavy truck traffic in residential areas where feasible. <br />• Quiet Equipment Selection. Use quiet construction. equipment, particularly air <br />compressors, wherever possible. <br />• Temporary Barriers. Construct solid plywood fences around construction sites <br />adjacent to residences, operational businesses, or noise-sensitive land uses. <br />• Temporary Noise Blankets. Temporary noise control blanket barriers should <br />be erected, if necessary, along building facades of construction sites. This <br />mitigation would only be necessary if conflicts occurred which were <br />irresolvable by proper scheduling. (Noise control blanket barriers can be <br />rented and quickly erected.) <br />• Noise Disturbance Coordinator. For larger construction projects, the City may <br />choose to require project designation of a "Noise Disturbance Coordinator" <br />who would be responsible for responding to any local complaints about <br />construction noise. The Disturbance Coordinator would determine the cause <br />of the noise complaint (e.g., starting too early, bad muffler, etc.) and institute <br />reasonable measures to correct the problem. Conspicuously post a telephone <br />number for the Disturbance Coordinator at the construction site and include it <br />in the notice sent to neighbors regarding the construction schedule. {The <br />project sponsor should be responsible for designating a Noise Disturbance <br />Coordinator, posting the phone number, and providing construction schedule <br />notices. The Noise Disturbance Coordinator would work directly with an <br />assigned City staff member.) <br />Finding: Implementation of these measures would reduce this <br />intermittent, short-term, project construction-period noise impact to a less-than- <br />significant level, <br />Impact 11-2: Precise Plan-Facilitated Ground-Borne Vibration Levels. <br />Precise Plan implementation related individual project demolition and <br />construction activities could generate substantial vibration (e.g., from potential <br />pile driving) in the project vicinity. These possible intermittent and short-term <br />effects represent a potentially significant impact (see criterion 2 and <br />explanatory text in subsection 11.3.1, "Significance Criteria," above). <br />Mitigation 11-2. Reduce ground-borne vibration levels during individual, <br />site specific future project demolition and construction periods by incorporating <br />conditions in individual project demolition and construction contractor agreements <br />that stipulate the following ground-borne vibration abatement measures; <br />Restrict vibration-gee erating activity to between the hours of 7:00 AM and <br />7:00 PM, Monday through Friday. Prohibit such activity on weekends and <br />holidays. <br />Notify occupants of land uses located within 200 feet of pile-driving activities <br />of the project construction schedule in writing. <br />Atty/Reso/Reso.1683 26 <br />030707 <br />