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Timing or Person/ Frequency Monitoring Agency of Impact Mitigation Measure Requirements Responsible' Monitoring= 4.7-2 Increased runoff within the 4.7-2 Although the applicant has presented preliminary design Monitor completion SJCFCE SP and PC watershed and channel measures to reduce the erosion hazards, a specific channel and implementation of modification of Mountain house design and maintenance plan should berepared and channel design. Creek could result in increased presented in the Specific Plan. The specifc channel design erosion. should incorporate riparian vegetation to the greatest extent possible. The design measures should also provide for protection of and any necessary Improvements to existing culverts and stream crossings within the drainage system. The use of pervious pavements should be incorporated into the design of parking and pedestrian areas to increase infiltration of storm water runoff. The design and maintenance plan should present specific channel maintenance procedures and schedules to be implemented by the Community Services District to protect the channel and associated structures during and after the development of the project. The channel design and maintenance plan should be reviewed and be subject to the approval of the San Joaquin Flood Control Engineer. 4.7-3 Increased sedimentation in the 4.7-3(a) Sediment discharge to Mountain I-louse Creek should be Review at SP stage. SJCCDD and SP proposed wetland area at the controlled. Appropriate control of erosion within the project SJCFCE terminus of Mountain House area, which would contribute to the sediment load, was Creek and within Old River would discussed in Mitigation Measure 4.7-2. The discharge of be caused by runoff from sediment to Old River should also be minimized by causing Mountain House Creek and sediment deposition to occur in areas within the Mountain operation of the proposed marina. House Creek channel. The Mountain House Creek channel should be enlarged upstream of the wetlands area to reduce flow velocities and cause sediment deposition. An appropriate channel design should be required as part of the Specific Plan and subject to review and approval by the San Joaquin flood Control Fngincer. 'SJCCDD:San Joaquin County Community Development Department; SJCBD:San.foaquin County Building Division;SJCDPW San Joaquin County Department of l'uhlic Works;USAC R U.S.Army Corps of Engineers; SJCFCE: San Joaquin County 1 710o Control Engineer, CSD:Community Services District(of project); RWQCB: Regional Water Quality Control Board; CDFG: California Department of Fish and Gante:SJCEl1D:San Joaquin County Environmental Health Department:DIIS:California Department of health Services:LAFCO:Local Agency Formation Commission. Those responsible would maintain monitoring records and verify compliance with mitigation mca_sure. ' GPA: General Plan Amendment stage: SP: Specific Plan stage; PC: Pre-construction stage: (Includes Tentative Map apprcws!c r and Final Map approvals and other discretionary application approvals' Construction stage (prior to building permit issuance); O: Operational stage.