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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures _ Development Department Geology,Soils,and Seismicity at the ground surface or in the shallow subsurface,using standard professional techniques, criteria,and judgment(Hart and Bryant 1997). Seismic Hazards Mapping Act Like the Alquist-Priolo Act, the Seismic Hazards Mapping Act of 1990 (PRC Sec. 2690-2699.6)is intended to reduce damage resulting from _ earthquakes.While the Alquist-Priolo Act addresses surface fault rupture,the Seismic Hazards Mapping Act addresses other earthquake-related hazards, including strong groundshaking,liquefaction,and seismically induced landslides. Its provisions are similar in concept to those of the Alquist-Priolo Act: the state is charged with identifying and mapping areas at risk of strong groundshaking, liquefaction, landslides, and other corollary hazards, and cities and counties are required to regulate development within mapped Seismic Hazard Zones. — Under the Seismic Hazards Mapping Act,permit review is the primary mechanism for local regulation of development. Specifically,cities and counties — are prohibited from issuing development permits for sites within Seismic Hazard Zones until appropriate site-specific geologic and/or geotechnical investigations have been carried out and measures to reduce potential damage have been _ incorporated into the development plans. California Building Standards Code The State of California's minimum standards for structural design and construction are given in the California Building Standards Code(CBSC) (California Code of Regulations,Title 24). The CBSC is based on the UBC (International Code Council 1997),which is used widely throughout the United States(generally adopted on a state-by-state or district-by-district basis), and has been modified for California conditions with numerous,more detailed and/or more stringent regulations. The CBSC requires that"classification of the soil at each building site shall be determined when required by the building official"and that"the classification shall be based on observation and any necessary test of the materials disclosed by borings or excavations." In addition,the CBSC states that — "the soil classification and design-bearing capacity shall be shown on the (building)plans,unless the foundation conforms to specified requirements." The CBSC provides standards for various aspects of construction, including but not limited to excavation,grading, and earthwork construction; fills and embankments; expansive soils; foundation investigations; and liquefaction potential and soil strength loss. In accordance with California law,certain _ aspects of the project would be required to comply with all provisions of the CBSC. Surface Mining and Reclamation Act of 1975 (SMARA) — The principal piece of legislation addressing mineral resources in California is the Surface Mining and Reclamation Act of 1975 (SMARA) (Public Resources Code Sections 2710-2719),which was enacted in response to land use conflicts — between urban growth and essential mineral production. The stated purpose of SMARA is to provide a comprehensive surface mining and reclamation policy that will encourage the production and conservation of mineral resources while — ensuring that adverse environmental effects of mining are prevented or DeSilva Gates Quarry Project — Draft Environmental Impact Report 3.F-8 J8s 051a5M