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October 4,2002 <br /> NOA ENVIRONMENTAL PROJECT NUMBER: LE00-429 <br /> To o ra hical and Geological Considerations <br />' Table I provides a summary of the physical setting of the site and vicinity <br /> Table I Physic Settin ummqry <br />' Topographic Map U S Geological Survey, 7 5 minute Stockton West, Californm,topographic <br /> quadrangle map,dated 1968,photorevised 1987 <br /> Topographic Map Near the center of Township 1 North,Range 6 East, <br /> Location Mount Diablo Baseline and Mendian <br /> Topography Relatively level industrial lots at an elevation slightly above sea level and not within <br />' the flood zone See Section V"Historical Information-Building Department" for <br /> more information <br />' General Location West of the intersection Interstate Highway 5 and West Charter Way; South of the <br /> Port of Stockton <br /> Assessor's Parcel 160-370-07 <br />' Number <br /> Geologic unit Alluvium of the Calaveras River <br /> Surface Soil Type Jacktone-Urban land complex <br /> Permeability Slow <br /> Depth to Approximately 15 feet below ground surface per the San Joaquin Flood Control and <br /> Groundwater Water Conservation District <br /> Groundwater Flow As reported by various geotechnical firms,the flows from 1993 to present have <br /> Direction vaned from northwest to northeast,but mostly to the northeast at a gradient ranging <br /> from 002 to 01 feet per horizontal foot <br />' Current Site Use A truck I trailer storage yard with light maintenance operations ' <br /> Past Site Use Trucking operations, wood waste recycling,pallet operations <br />' The subject parcel is located in the Sacramento/San Joaquin Valley This valley is generally identified <br /> as the Great Valley geomorphic province There are eleven geomorphic provinces in California,each <br /> representing distinctly different geologic environments A description of the Great Valley Province <br />' from the California Division of Mines and Geology (1999) describes the Great Valley Province as <br />' "an alluvial plain, about 50 males wide and 400 males long, located between the <br /> Coast Ranges and the Sierra Nevada The Great Valley is drained by the <br /> Sacramento and San Joaquin Rivers whichjoin and enter the San Francisco Bay <br /> The eastern border is the west-sloping Sierran Bedrock surface, which continued <br /> . westward beneath alluvium and older sediments The western border is underlain <br />' 6 <br />