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r w determined by a noise consultant approved by the County. The sound barrier shall reduce outdoor noise levels at the center of backyards of proposed adjacent single-family residence's to below:65 dBA LdWCNEL and as'close to 60 dBA Ldn/CNEIw as feasible. This mitigation shall be funded through fair-share payments by the College Park dei+elopers. [MM4.13-4] Timing Design submitted with Improvement Plans and compliance verified prior to recordation of the first Final Map. 19 Outdoor Noise Levels:.Best available noise reduction measures shall be implemented by the 6pplicant10 reduce noise levels in primary=outdoor use areas (backyards)of'new residential development to an Ldn of 60 dB. The subdivider shall specify what reasonable measures have.been taken ir►:this regard. Where it is not possible to reduce noise levels to this level using practical application of the best available noise reduction measures, an exterior noise level of up to 65 db may be allowed. [Master Plan Policy 11:3.1 (e) and Specific Plan III Implementation Measure 11.2.3.15 and e.] In the case that noise levels cannot be reduced to the design noise level of 60 dB, the applicant must provide notice via a note.on the deed of each lot stating that exterior noise levels may exceed 60 dB. Timing: Inclusion of note on the Final Map approved by CDD prior to Final Map approval, and inclusion of note on deed prior to issuance of building permits. 20. Walls: The developer shall construct the wall as shown on the"Wall Plan, Fencing, and Edge Treatment Plan attachment to the Tentative Map, consistent with Specific Plan III Figure 4- 27 (Community Wall, Agricultural Fence, View Fence, Security Fence, and Chain Link Fence) and the MHCSD Design Manual. Timing: Wall design submitted with Improvement Plans; wall constructed as part of the applicable final map prior to occupancy of the first residence. 21. Interior Noise Levels: Interior noise levels for housing proposed to be located in areas exposed to an exterior noise level of an Ldn above 60 dB shall be maintained at or below an Ldn of 45 dB. [implementation Measure 11.2.1 (4)] Timing: Compliance verified prior to the issuance of building permits. 22. Construction Noise: The following measure shall be implemented during construction: • Construction shall be limited to the hours of 6:00 AM to 9:00 PM on weekdays. Extended hours which may include Saturdays and Sundays may be allowed through prior notice to adjacent residents and landowners, and prior approval of the MHCSD for infrastructure construction and CDD for building permits. • Comply with all San Joaquin County Development Title for all construction activities. • Equip all construction vehicles or equipment, fixed or mobile, with properly operating and maintained mufflers and acoustical shields or shrouds, in accordance with the manufacturers' recommendations. • Arrange all construction equipment and truck routes to minimize travel adjacent to occupied residences. • Locate stationary construction equipment and staging areas as far as possible from sensitive receptors. Temporary acoustic barriers may be installed around stationary equipment, if necessary. [Mitigation Measure 4.13-1 from Specific Plan III EIR] Timing: Inclusion of the above measures as notes on Improvement Plans approved by CDD and MHCSD prior to Final Map approval. 6