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7.1 MITIGATION MONITORING PROGRAM Geology, Soils, and Seismicity Table 7.1 -continued Timing or Person/ Frequency Monitoring Agency of Impact Mitigation Measure Requirements Responsible' Monitoring= ■ GEOLOGY, SOILS, AND SEISMICITY 4.6-1(a) The applicant should develop erosion and sediment Approval of plan. SJCDPW SP, PC and 4.6-1 Soils exposed during grading and control standards for the proposed project and submit C (weekly) project construction could be the standards to the San Joaquin County Department of subject to excessive erosion. Public Works for review and approval prior to approval of the Specific Plan. Prior to any on-site construction, an erosion and sediment control plan for each Individual construction project should be developed by the project engineer and submitted to the San Joaquin County Department of Public Works for review and approval. The plan should comply with requirements of the San Joaquin County Grading Ordinance; and the National Pollutant Discharge Elimination System non-point-source reduction programs. as a minimum. 4.6-1(b) Excavation of creek channels would require permits by the Submittal of permits. CDFG and PC California Department of Fish and Game. These permits SJCDPW would ensure protection of water quality by requiring minimization of sedimentation. 4.6-2 Surface soils with high shrink/swell 4.6-2 Prior to development approval of the Specific Plan, a Submittal of SJCCDD SP and PC potential could cause damage to defiled preliminary geotechnical investigation of on-site preliminary building foundations and paved soils should he conducted. This investigation should identify investigation. surfaces. soils with high shrink/swell potential and recommend appropriate foundations and pavement subgrade treatment. Detailed geotechnical investigations would be required at the Tentative Map stage. 4.6-3 Settlement may occur if loads (fill 4.6-3 Areas underlain by low-density clays should be left as open Review at SP stage. SJCCDD SP and/or structures) are placed over space, or alternatively, building foundations should be the low-density clays along Old designed to minimize potential settlement. River. 4.6-4 Levee failure along Old River and 4.6-4 Levees should be upgraded to meet engineering standards to Review at SP stage. SJCCDD and SP and PC the Delta-Mendota Canal could he ensure structural integrity under the anticipated maximum USACF caused by moderate to strong ground acceleration of 0.5g. A feasibility study to determine groundshaking during an the cost of levee reconstruction and to examine alternatives. earthquake. such as setting aside open space in the levee failure flood zone. should be completed prior to development of the Specific Plan.