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4 Environmental Analysis <br /> 4.13 Noise <br /> noise level of 55 dBA to protect the public from the effect of broadband environmental noise <br /> outdoors in residential areas and farms, other outdoor areas where people spend widely varying <br /> amounts of time, and other places in which quiet is a basis for use (USEPA 1974). <br /> 4.13.2.2 State <br /> Government Code Section 65302 encourages counties and cities to implement a noise element <br /> as part of the general plan. In addition, the California Governor's Office of Planning and Research <br /> has developed guidelines for preparing noise elements, which include recommendations for <br /> evaluating the compatibility of various land uses as a function of community noise exposure. <br /> The California OSHA has published Occupational Noise Exposure Regulations (9 California Code <br /> of Regulations §§5095-5099) that set employee noise exposure limits. These standards are <br /> equivalent to the federal OSHA standards described above. <br /> 4.13.2.3 Local <br /> San Joaquin County Ordinance Code <br /> San Joaquin County regulates noise through Chapter 9-1025 within the County Ordinance Code. <br /> Per Table 9-1025.9 Part II of the San Joaquin County Ordinance Code, exterior noise at noise- <br /> sensitive areas is limited to 50 dBA during the daytime (7:00 a.m. to 10:00 p.m.) and 45 dBA <br /> during the nighttime (10:00 p.m. to 7:00 a.m.). Further, maximum noise levels are not permitted <br /> to exceed 70 dBA during the daytime and 65 dBA during the nighttime. Noise sources associated <br /> with construction are exempt from these maximum noise levels, provided construction does not <br /> occur before 6:00 a.m. or after 9:00 p.m. on any day. <br /> Chapter 9-1025.5 goes on to set limits on maximum displacement due to vibration but is only <br /> applicable to general industrial land use. <br /> San Joaquin County General Plan <br /> The San Joaquin County General Plan does not contain regulations for acceptable noise levels. <br /> However, for a CEQA analysis, the General Plan defines a significant impact as 3 dB above the <br /> ambient level. <br /> Alameda County General Plan and East County Area Plan Noise Element <br /> The Alameda County General Plan Noise Element does not contain regulations for acceptable <br /> noise levels. The ECAP does contain one policy that pertains to acceptable noise levels and is <br /> applicable to the Project (Alameda County 2000): <br /> Policy 288: The County shall endeavor to maintain acceptable noise levels throughout <br /> East County. <br /> Griffith Energy Storage Project 4.13-7 Tetra Tech/2022120675 <br /> Draft Environmental Impact Report August 2023 <br />