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Timing or Person/ Frequency Monitoring Agency of Impact Mitigation Measure Requirements Responsible' Monitoring' 4.4.3-3 The volume and rate of runoff 4.4.3-3(a) The operating budget of the Community Services District Budget statements to SJCDPW SP; O from the Mountain House New should be guaranteed to be sufficient for all maintenance be submitted to Town could cause excessive functions necessary to operate the storm water collection SJCDPW. Review at erosion and siltation of detention .system as intended. The budget should be addressed in the SP stage. ponds, creeks, drainage channels, Specific Plan. and Old River. 4.4.3-3(b) The performance standards and design features of the Review of pond design SJCBD; SP inlets to detention ponds should be included in the Specific and construction by SJCCDD and Plan. The design should allow for reduction In the SJCBD. SJCDPW velocity of the Incoming water. 4.4.3-3(c) If two-stage detention ponds were used, the inflow channel Review at SP stage. SJCBD and SP and PC for the upper stage (usually dry) should be constructed to SJCCDD prevent erosion, which may include a concrete low-flow channel or riprap, and should terminate at the edge of the lower stage (always wet). "lime design features and performance standards to prevent erosion should be provided in the Specific Plan. 4.4.3-3(d) Periodic removal of sediments from detention ponds should Review at SP stage. SJCDPW and SP and O occur to restore the capacities and to minimize resuspension SJCCDD of sediments. Pond maintenance objectives, activities, and approximate frequencies should be described in the Specific Plan; a detailed description of maintenance activities should be Incorporated Into an Operations and Maintenance Manual for the storm water collection system. 4.4.3-3(e) If grading or construction activities were to occur during the Review at SP stage. SJCBD and SP and O winter months. local drainage and temporary detention SJCCDD ponds should be provided to trap sediment in the runoff prior to discharge to creeks. ditches, or Old River. 'llmesc provision. Should be addressed in the Specific Plan. SJCCDD:San Joaquin County Community Development Department: SJ(-BD:San Joaquin County Building Division;SJCDPW San Joaquin County Department of Public Works;USACE: U.S.Army Corps of Engineers; SJCFCF: San Joaquin County Flood Control Engineer: CSD:Community Services District(of project); RWOCB: Regional Water Oualily Control Board;CDFG: California Department of Fish and Game;SJCEHD:San Joaquin County Environmental Health Department:DI IS:California Department of I lealth Services;L1FC'O:Local Agency Formation Commission. 'l-hose responsible would maintain monitoring records and verify compliance with mitigation measure. 2 GPA: General Plan Amendment Mage: SP: Specific Plan stage: PC: Pre-construction stage: (includes Tentative Map apprca,;oS+c and final Map approvals and other discretionary application approvals'. -- Construction stage (prior to building permit issuance): O: Operational stage.