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Mountain House Specitic Plan III ........................................................................................................................................................................... - 6.7.3 Soils, Geologic and Seismic Hazards 6.7.3.1 Master Plan Summary To minimize the adverse impacts from soils, geologic hazards and seismic occurrences, and to reduce soil erosion and sedimentation as a result of construction activities,the Master Plan requires that project ` residents and workers will be made aware of seismic hazards and informed of ways to reduce these hazards. Adequate efforts will be made during design and construction of urban improvements, including buildings,to control or eliminate,if possible, soil erosion and sedimentation associated with construction activities. The Master Plan also required an Earthquake Preparedness Plan, which was prepared in compliance with the requirements of the San Joaquin County Office of Emergency Services and adopted by the MHCSD as part of the Emergency Preparedness Plan. .. 6.7.3.2 Specific Plan III Description Development of the College Park project could alter the existing drainage pattern of the site or area in a manner that could result in substantial erosion and sedimentation during project construction and operation. Compliance with MHMP policies, MHMP mitigation measures,and Phase I and H NPDES permit requirements,including the preparation and implementation of a Stormwater Pollution Prevention Plan(SWPPP)that outlines Best Management Practices(BMPs)to be followed to minimize erosion and sedimentation,would avoid substantial erosion and sedimentation during project construction and operation.No adverse effects on the capacity and performance of the storm drain system would occur. 6.7.3.3 Implementation Measures a. Design and construction of urban improvements, including buildings,shall be designed to control or eliminate soil erosion and sedimentation associated with construction activities,consistent with L established BMPs, State law and County standards. b. All implementing projects shall comply with the applicable provisions of the MHCSD Emergency Preparedness Plan. c. The applicant shall prepare and submit a Geotechnical Engineering Report to comply with all L California laws designed to minimize the potential adverse seismic safety effects of an earthquake. d. In order to mitigate the potential for liquefaction and expansive soils at the project sites, all structures shall be supported foundations designed to accommodate the predicted ground deformation as set forth in the project's Geotechnical Engineering Report. The applicant shall also design all infrastructure improvements to include flexible connections where critical underground utilities enter buildings to accommodate the anticipated differential ground movements. Draft 03/14/05 6-9 ............................................................................................................................................................................