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SP,other than SP I, shall identify mitigation to ensure that exterior noise levels at existing residences do not exceed an Ld„of 65 dB at the property line and an Ld„of 45 dB inside the residence. ► Stationary Noise Control(Section 11.4 Policy b) As a means of providing noise-level standards that account for stationary noise sources,new development of noise-sensitive uses shall not be allowed where the noise levels resulting from stationary noise sources will exceed the community's noise-level standard as set forth in Table 11.2: "Exterior Noise Standards for Noise-Sensitive Uses Affected by Non-Transportation Noise Sources"(reproduced as Table 4.13-5 in this EIR). ^ Table 4.13-5 Exterior Noise Standards for Noise-Sensitive Uses Affected by Non-Transportation Noise Sources Noise Level Descriptor Daytime Nighttime (7 a.m.to 10 p.m.) (10 p.m,to 7 a.m.) Hourly Lq 55 dBA 50 dBA Notes: a. Stationary noise sources include equipment,utilities,or processes associated with industrial,commercial,or public facilities that create a constant or periodic noise in a fixed location. b. Noise-sensitive uses include residential,educational,and hospital uses. ^ c. See Section 11.2:Assumptions(of MHMP),for explanation of measurement units and relationship to the San Joaquin County Development Title. Section 11.2.a of the Mountain House Master Plan(1994)states that the noise-control standards established by the Mountain House Master Plan for stationary noise sources(presented above) should be applied to development in the Mountain House Master Plan instead of the stationary noise-control standards of the San Joaquin County Development Title because they are more appropriate for urban communities that include commercial,industrial, and institutional activities. Final EIR for the Mountain House Master Plan and Specific Plan 11994 (Mitigation Measures) Mitigation Measure M4.14-1 r. (a) The following Policies should be added under Objective 1, Mobile Source Noise Control: r„ "d) Noise levels in primary outdoor use areas of new residential development, schools, and other noise- sensitive land uses shall not exceed an Ld„of 60 dB unless the project design includes effective mitigation measures to reduce noise in outdoor activity areas to an Ldn of 60 dB. Noise-sensitive land uses include,but are not limited to,schools, group care facilities,hospitals, and park facilities. "e) Interior noise levels for housing proposed to be located in areas exposed to an exterior noise level of an Ldo above 60 dB shall be maintained below an Ld„of 45 dB. Compliance with this recommended mitigation measure shall be verified prior to issuance of building permits." (b) The following Implementation should be added under Objective 2 in Mobile Source Noise Control (Noise)(Appendix C): "b) Residential development shall be set back 500 to 600 feet from the centerline of I-205 to ensure that the L&would be below 60 dB. The exact setback distance shall be determined by additional noise analysis,revising the distances in Table 11.1 in the Draft Master Plan,by assuming six lanes on I- 205,not eight. Alternatively, earth berms or soundwalls shall be built between the noise source and the noise-impacted area. Alternatively,noise level reductions to an Ldo of 60 dB shall be achieved through site planning and building orientation,construction of earth berms or soundwalls,or a College Park at Mountain House Spec'if'ic Plan III Draft EIR EDAW San Joaquin County 4.13-11 Noise