Laserfiche WebLink
San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures <br /> Development Department Geology,Soils,and Seismicity <br /> IF Geology, Soils, and Seismicity <br /> Introduction <br /> This section describes regional geology and topography, as well as current soil <br /> and geotechnical conditions in the project area. This section also presents the <br /> federal, state, and local policies and regulations that determine mitigation <br /> requirements and identifies potential impacts associated with geologic and soil <br /> resources, earthquakes,and geotechnical hazards. Impacts related to the loss of <br /> high-quality agricultural soils are analyzed in section 3.13,"Agricultural <br /> Resources,Land Use, and Planning." Impacts related to soil and groundwater <br /> contamination are analyzed in section 3.1,"Hazards and Hazardous Materials" <br /> and section 3.03,"Surface Water, Stormwater,and Water Quality." Potential <br /> impacts of project alternatives on geology, soils, and seismicity are described and <br /> analyzed in Chapter 4,"Alternatives Analysis." <br /> .. The key sources of data and information used in the preparation of this section <br /> are listed below. <br /> ■ Geotechnical Services Report, Slope Stability Analysis,Thoming Aggregate <br /> Quarry,Vemalis, California,prepared by Kleinfelder(2003a). <br /> ■ Groundwater Depths and Elevations, Thoming Aggregate Quarry,Vernalis, <br /> California,prepared by Kleinfelder(2003b). <br /> ■ Addendum to Geotechnical Services Report Dated August 21,2003, Slope <br /> Stability Analysis, Thoming Aggregate Quarry,Vernalis, California, <br /> prepared by Kleinfelder(2004). <br /> ■ Maps and reports by the U.S. Geological Survey(USGS). <br /> ■ Map and reports by the California Geological Survey(CGS). <br /> ■ Maps and reports by Natural Resources Conservation Service (NRCS). <br /> ■ San Joaquin County General Plan. <br /> Environmental Setting <br /> Physical Setting <br /> Geology and Topography <br /> Regional Physiographic Setting of the Project Area <br /> The project area is located within the Great Valley geomorphic province. The <br /> Great Valley of California, also called the Central Valley of California, is a <br /> nearly flat alluvial plain extending from the Tehachapi Mountains at the south to <br /> the Klamath Mountains at the north and from the Sierra Nevada on the east to the <br /> DeSilva Gates Quarry Project <br /> Draft Environmental Impact Report 3.F-1 <br /> JdS 05105.0.5 <br />