Laserfiche WebLink
Quik Stop Station No 079 June 20, 2002 <br /> ` Turlock California Results of Additional Groundwater Assessment <br /> • Mount Diablo Baseline and Meridian The Quik Stop station facilities, as shown on Figure <br /> 2, include a station building in the eastern portion of the site, two unleaded gasoline USTs <br /> located in the northern portion of the site, and a gasoline dispenser island located in the <br /> southwestern portion of the site Product piping and dispensers were located over and <br /> adjacent to the former USTs Fill and turbine ports were situated at the southern ends of the <br /> former USTs <br /> REGIONAL AND LOCAL HYDROGEOLOGY <br /> The site is situated in the central portion of the Great Valley Geomorphic Province otherwise <br /> known as the Central Valley of California The Central Valley consists of two broad, <br /> topographically distinct, alluvial valleys the Sacramento Valley in the north, and the San <br /> Joaquin Valley in the south These two valleys meet in the area of the inland delta formed <br /> by the confluence of the San Joaquin and Sacramento Rivers Stockton is situated in the <br /> . northern San Joaquin Valley just east of and adjacent to the San Joaquin/Sacramento River <br /> delta system <br /> Generally unconsolidated to poorly consolidated alluvial, fluvial and lacustrine deposits of <br /> Miocene to Holocene age comprise the upper portion of the stratigraphic sequence of the <br /> Great Valley province Surface sediments in the site area are generally Pleistocene to <br /> Holocene alluvial and plains deposits Site soils to approximately 60 feet below surface <br /> grade (bsg) are predominantly silt with variable clay and sand fractions, and minor silty <br /> sand <br /> The Central Valley is divided into three hydrologic basins the northern Sacramento River <br /> Basin, the central San Joaquin River Basin, and the southern Tulare Lake Basin The city of <br /> Stockton is located within the San Joaquin River hydrologic basin Site groundwater is <br /> approximately 64 feet bsg Regional groundwater is generally westward to southwestward <br /> 079rpt6-02 <br /> Project No 7079 13 HORIZON ENVIRONMENTAL <br />