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Ll <br />SUPPLEMENTAL NOISE STUDY <br />E <br />TRACY MATERIAL RECOVERY FACILITY AND TRANSFER STATION <br />Tracy Material Recovery Facility and Transfer Station Expansion proposes to increase the <br />tonnage to 2,500 tons per day, increase the hours of operation, and increase the Facility <br />outdoor activity to include additional C&D processing and wood grinding in location south of <br />the Transfer Station. An evaluation of the noise that was analyzed in 1993 and what is being <br />proposed is presented in this Supplemental Noise Study. <br />The 1993 Environmental Impact Report (EIR) regarding "Noise" for the Tracy Material Recovery <br />Facility and Transfer Station is attached as a reference. The "Noise" portions of the EIR provided <br />the Environmental Setting, Regulatory Background, Existing Noise Environment, and the <br />Significance Criteria. The results of the Study provided the Impacts and Mitigation for the <br />following noise sources: wood grinding, traffic noise, and construction activity. Current activity <br />that was not part of the 1993 EIR includes concrete crushing that has been underway for years, <br />such as occurring at the aggregate mining/inert crushing companies to the north and west, as <br />shown on the attached Noise Study Map. The proposed activity would be the relocation of the <br />mixed C&D Processing Facility to the south of the MRF as shown on the Study Map. <br />A listing of the noise source and the direct to the nearest residency is listed below: <br />Operations <br />Current Activity <br />Proposed Activity <br />Distance to Residencies <br />Transfer Station <br />Enclosed MRF and <br />Expansion of enclosed <br />2,500 feet <br />74.5 dBA <br />Transfer Station <br />MRF and Transfer Station <br />Rock Plant <br />Wood Grinding <br />Outdoor grinding on north <br />Same <br />840 feet <br />Asphalt production <br />pad <br />85 dBA <br />50 feet <br />Inert Grinding <br />Outdoor Grinding on <br />Same <br />1,180 feet <br />500 feet <br />northwest pad <br />Mixed C&D Processing <br />Floor sort next to MRF <br />Relocation to south pad <br />2,500 feet <br />Facility <br />With respect to inert crushing, the Noise Element from the County of Sacramento General Plan <br />contains the following information about noise levels from inert crushing plants, similar to the <br />one north and west of the Tracy Material Recovery Facility and Transfer Station: <br />Plant <br />Activity <br />Hours of Operation <br />Noise levels <br />Distance <br />Lonestar Aggregates <br />Asphalt production <br />6 a.m. to 10:30 p.m. <br />74.5 dBA <br />300 feet <br />Lonestar Aggregates <br />Rock Plant <br />6 a.m. to 10:30 p.m. <br />57.5 dBA <br />59.5 dBA <br />1500 feet <br />1200 feet <br />Granite Construction <br />Asphalt production <br />6 a.m. to 9 p.m. <br />85 dBA <br />50 feet <br />Granite Construction <br />Rock Plant <br />6�a.m. to 9 p.m. <br />70.3 dBA <br />500 feet <br />