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Veterans Memorial Senior Center/YMCA Project 20 Addendum #2 <br />City of Redwood City November 2025 <br />between the construction-related noise sources and noise-sensitive <br />residential receptors nearest the project site during all project <br />construction. <br />Generators, compressors, and pumps shall be housed in acoustical <br />enclosures. <br />Where feasible, temporary power service from local utility <br />companies should be used instead of portable generators. <br />Locate cranes as far from adjoining noise-sensitive residential <br />receptors as possible. <br />During final grading, substitute graders for bulldozers. Wheeled <br />heavy equipment are quieter than track equipment. <br />Substitute nail guns for manual hammering. <br />Avoid the use of circular saws, miter/chop saws, and radial arm saws <br />near the adjoining noise-sensitive residential receptors. Shield saws <br />with a solid screen with material having a minimum surface density <br />of two pounds per square feet (e.g., such as ¾-inch plywood). <br />Substitute electrically-powered tools for noisier pneumatic tools. <br />Maintain smooth vehicle pathways for trucks and equipment <br />accessing the site, and avoid local residential neighborhoods as much <br />as possible. <br />During interior construction, the exterior windows facing noise- <br />sensitive receptors shall be closed. <br />During interior construction, noise-generating equipment shall be <br />located within the building to break the line-of-sight to the adjoining <br />receptors. <br />The contractor shall be required to prepare a schedule for major <br />noise-generating construction activities. The construction plan shall <br />identify a procedure for coordination with adjacent residential land <br />uses so that construction activities can be scheduled to minimize <br />noise disturbance. <br />Designate a “disturbance coordinator” who would be responsible for <br />responding to any complaints about construction noise. The <br />disturbance coordinator would determine the cause of the noise <br />complaint (e.g., bad muffler, etc.) and would require that reasonable <br />measures be implemented to correct the problem. Conspicuously <br />post a telephone number for the disturbance coordinator at the <br />construction site and include in it the notice sent to neighbors <br />regarding the construction schedule. <br />The 2019 EIR also modeled vibration levels at the nearest receptors and determined that while <br />adjacent receptors would experience a temporary increase in vibration levels, the vibration level at <br />most receptors would be less than significant. The 2019 EIR disclosed that unmitigated vibration <br />levels would exceed the established threshold at a residence to the west of the site. The 2019 EIR <br />ATTY/RESO.0111/CC RESO CONSIDERING AND APPROVING AN ADDENDUM TO THE FINAL EIR (YMCA PROJECT CEQA) - EXHIBIT A <br />REV: 11-06-25 VR