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(2) The project geotechnical engineer shall identify areas of expansive soils throughout the site and provide specific recommendations to stabilize expansive materials that may be used for subgrade support and utility encasement or to construct foundations able to resist the damaging effects of the expansive soil movement. (Mitigation Measure 4.2-2) (3) All fill materials that will support building foundations and roadway subgrades should be fully compacted in accordance with the geotechnical engineer's recommendations before the construction of the project improvements. If necessary, fills should be surcharged until the geotechnical engineer determines that the fill material as well as the underlying basement soils have sufficiently consolidated to effectively support improvements constructed on the surface. (Mitigation Measure 4.2-3) (4) The proposed project shall conform to all State Reclamation Board and RD 17 setback restrictions placed on the creation of privately owned parcels and on the construction of both public and private improvements in the vicinity of the Walthall Slough levee. (Mitigation Measure 4.24A) (5) The applicant and RD 17 should develop a setback or emergency access plan along the San Joaquin River that would protect existing development entitlements adjacent to the river while also preserving a reasonable area for the performance of work in the event of levee seepage or an impending levee failure. Approval of this plan would be granted by RD 17 in the form of a variance to its standard levee setback requirements, at the discretion of the District's Board of Trustees. (Mitigation Measure 4.2-4B) (6) The project geotechnical engineer shall determine the degree to which supporting soil layers in the vicinity of the proposed effluent disposal ponds, or elsewhere on the site, would be saturated by high groundwater levels and subject to liquefaction. Where it is determined that liquefaction could occur, project improvements shall be constructed with foundations designed to resist the additional movement and loss of support that might occur within localized areas during an earthquake. This mitigation measure will be completed during and after construction. The San Joaquin County Public Works Department shall confirm that the improvements have been constructed according to plans. (Mitigation Measure 4.2-5A) (7) Slopes around the perimeter of the lake shall be designed to resist any loss of lateral support that might occur in response to an earthquake, and all project improvements shall be setback from the top of slope as required to be beyond the potential effects of lateral spreading. This mitigation measure will be completed during and after construction. The San Joaquin County Public Works Department shall confirm that the improvements have been constructed according to plans. (Mitigation Measure 4.2-5B) (8) Construct all proposed buildings and perform all earthwork in accordance with the Uniform Building Code and with all applicable provisions of the San Joaquin County Grading Ordinance. These designs would be based on estimates of peak and maximum repeatable earthquake-induced ground surface accelerations expected to occur on the project site as calculated by the project geotechnical reports. This mitigation measure will be completed during and after construction. The San Joaquin County Public Works Department shall confirm that the improvements have been constructed according to plans. (Mitigation Measure 4.2-5C) (9) The proposed boat storage dock and access ramp shall be designed and constructed in accordance with all conditions set forth by RD 17 in its engineering consultant's response to the Draft EIR, dated August 16, 2000, and with all additional conditions that may be identified subsequent to further review, as may be needed to protect the integrity and stability of the San Joaquin County PA-0200098\Beck Properties Community Development Page 13