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• Construction of temporary berms north of Byron Road to protect non-Trimark owned lands and to focus flows toward existing discharge locations into Old River. The interim storm water detention/discharge basin proposed just north of Byron Road will be designed to provide collection, retention and controlled discharge of small, frequent events that pose the greatest water quality concern. The interim basin will collect and retain the "first flush" waters created by either small storms or the first flows of larger storms to allow pollutants to settle in the bottom prior to controlled discharge over downstream lands and ultimately into Mountain House Creek and Old River pursuant to the California Best Management Practices Municipal Handbook, Treatment Control BMP's. The basin will also be designed to allow larger flows, including 100-year flows, to pass through the basin via a spillway weir. For further detail, please seethe"Neighborhood F Storm Water Report" prepared by Condor Earth Technologies. XXV. NOISE The Master Plan (Section 11.3.1 Policies) establishes maximum outdoor and indoor noise levels, which can be experienced by residential uses. Section 11.3.1 Implementation, identifies measures which must be taken to ensure that these standards are not exceeded. Specific Plan I evaluated the potential for noise impacts for Neighborhoods F, E and G. The Specific Plan concluded that if sound walls are constructed in accordance with Figure 4.1 of the Master Plan, and other mitigations, if necessary, along non-sound wall frontages could be proposed that minimized outdoor noise levels at property lines at or below 60 db Ldn (to no more than 65 db Ldn) and interior noise levels to 45 db Ldn, that noise impacts would be mitigated. In accordance with the Master Plan and Specific Plan policies,the neighborhood design for F incorporates the sound wall recommendations of Figure 4.1, namely the construction of soundwalls along residential frontages adjacent to De Anza, Mascot and Mountain House Blvd., and the construction of Central Pkwy incorporating the right-of-way, landscape treatments, and grading recommendations in the Master Plan. These measures as well as possible residential construction requirements (for the residential units facing Central Parkway) should mitigate any anticipated noise impacts from mobile sources. XXVI.WASTE IIANAGEIIENT The CSD will be providing, through contract with providers, all waste management services for the neighborhood. According to the CSD, the provider of these services has not yet been selected, however the CSD is currently in talks with potential providers. In accordance with the Specific Plan I and CSD service requirements, Trimark Communities will make available for the CSD, at the CSD's discretion, sufficient land within the overall 50-acre public site within the Old River Industrial Park area, for waste transfer and composting functions. XXVII. PARKS AND OPEN SPACE In accordance with the Master Plan, Specific Plan I and the Special Purpose Plan for Neighborhood F, the subdivision Map proposes the creation of a Neighborhood Park within the center of the neighborhood, as well as the identification of a preferred location for interim sports fields for organized team sports. Per the policy documents, construction of the Neighborhood Park will commence no later than at the issuance of 50 percent of the residential building permits for the neighborhood, and must be completed by the issuance of 80 percent of the residential building permits. Final Construction plans for the interim sports field facility must be approved prior to the issuance of the 50h residential building permit, and MAJOR SUBDMSION-TPUCT 2925 PROJECT DESCRIPTION Page 14