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. ' --- KL ElNFELDER <br /> site consist of Miocene to Holocene continental rocks and deposits of a heterogeneous <br /> mixture of generally poorly sorted clay, silt, sand, and gravel. Some beds of claystone, <br /> siltstone, sandstone, and conglomerate are also present. <br /> Review of the California Division of Mines and Geology "Geologic Map of the San <br /> Francisco-San Jose Quadrangle," indicates that the site is underlain by Quaternary <br /> alluvial fan deposits of the Modesto Formation. <br /> Based on the San Joaquin County Flood Control District (SJCFCD), Lines of Equal <br /> Elevation and Depth to Groundwater Map, Sdpring 2003, groundwater elevation in the <br /> vicinity of the site ranges from approximately 0 to -20 feet msl. Based on Kleinfelder's <br /> previous investigations in the area, groundwater is anticipated to occur at depths <br /> ranging from 5 to 17 feet below ground surface (bgs). Based on the previously <br /> reference SJCFCD map, the regional direction of groundwater flow is towards the <br /> north/northeast. <br /> i <br /> i <br /> 1 <br /> 1 <br /> i . <br /> 79658.GW1/STO7R790/FB:Iv Page 3 of 9 <br /> ©2007 Kleinfelder October 2, 2007 <br />