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r r r F - r - F- r r r r r r r r- r r r U­ r- <br /> Executive Summary <br /> TABLE 2-1 (CONTINUED) <br /> SUMMARY OF IMPACTS AND MITIGATION MEASURES <br /> Environmental Impact Mitigation Measures Level of Significance <br /> (Level of Significance Prior to Mitigation) After Mitigation <br /> 4.5.1d Nighttime mining shall be prohibited within 1,000 feet of residences <br /> unless noise measurements confirm that noise levels are below 45 <br /> dBA,L„at the outdoor activity areas of adjacent residences. <br /> 4.5.2 Operation of the processing plant could potentially 4.5.2 Implementation of Mitigation Measures4.5.1 a,4.5.1b,and 4.5.1c Less than Significant <br /> increase ambient noise levels at nearby residence(s). would reduce impacts of processing plant noise on local residents to <br /> This would be a potentially significant impact.(PS) a less-than-significant level. <br /> 4.5.3 Traffic associated with operation of the project would 4.5.3 Depending on the selected Haul Route Option,the Applicant shall Significant <br /> result in an increase in ambient noise levels on nearby notify the homeowners(of residences existing as of project approval) <br /> roadways used to access the mine.This would be a located along the roadway segments that would experience <br /> potentially significant impact.(PS) significant traffic-related noise of the noise impacts associated with <br /> traffic from project operations. <br /> a. At the request of homeowners along the affected segments(limited <br /> to a reasonable number of complaints as determined by the County <br /> and not to exceed one year),the Applicant shall retain a qualified <br /> acoustical consultant to evaluate outdoor activity area and interior <br /> noise levels to determine if roadway treffic associated with the project <br /> is resulting in exterior noise levels that exceed 65 dBA DNL or <br /> interior noise levels that exceed 45 dBA DNL(the exterior and <br /> interior noise level standards contained in the San Joaquin County <br /> Development Title,respectively). For interior noise measurements, <br /> residences with air-conditioning units will be evaluated with windows <br /> closed;residences with no air conditioning units will be evaluated <br /> with windows open if that is the normal operating condition. <br /> b. In those cases where interior noise levels exceed 45 dBA DNL, <br /> the Applicant will identify and implement building treatments or <br /> sound insulating features to reduce interior noise to 45 dBA DNL <br /> or less. Sound insulating features may include treatments such <br /> as installation of air-conditioning,upgrading windows and doors <br /> (including seals),and eliminating noise flanking paths. Sound <br /> insulation would ensure that interior noise level standards <br /> contained in the San Joaquin County Development Title are met, <br /> except where affected property owners do no want sound <br /> insulation. <br /> Cemex Vernak.Quarry Mining aM RadamaEan Pmjed ES-9 ESA/203015 <br /> Final Envimnmernal mpad Report Juna 2008 <br />