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DER <br /> .11h,' .11h,Po Ik.fthl kuom <br /> The valley deposits are derived from the Coast Ranges to the west and the Sierra <br /> Nevada to the east. Granitic and metamorphic rocks outcrop along the eastern and <br /> southeastern flanks of the valley. Marine sedimentary rocks outcrop along most of the <br /> ' western, southwestern, southern, and southeastern flanks; and volcanic rocks and <br /> deposits outcrop along the northeastern flanks of the valley. The valley geomorphology <br /> includes dissected uplands, low alluvial plains and fans, river flood plains and channels, <br /> ' and overflow lands and lake bottoms. <br /> ' The majority of the native sediments near the site consist of Miocene to Holocene <br /> continental rocks and deposits of a heterogeneous mixture of generally poorly sorted <br /> clay, silt, sand and gravel. <br /> ' The general depth and direction of regional groundwater flow in the area of the site, <br /> based on reports issued by the San Joaquin County Flood Control and Water <br /> Conservation District are summarized in the following table. <br /> ' REGIONAL GROUNDWATER ELEVATION AND FLOW DATA <br /> CALIFORNIA NATURAL PRODUCTS FACILITY <br /> LATHROP, CALIFORNIA <br /> Ground-Water Approximate Depth to Flow Direction of <br /> Date Elevation Elevation of Groundwater Groundwater <br /> of County Map (from County Property (calculated from (based on <br /> Data Map) (from Nolte prior 2 columns) County Map) <br /> ' survey) <br /> Spring 1998 8 feet msl 20 feet msl 12 feet bgs Northwest <br /> Fall 1998 3 feet msl 20 feet msl 17 feet bgs West <br /> ' Spring 1999 8 feet msl 20 feet msl 12 feet bgs Northwest <br /> Spring 2003 0 foot msl 20 feet msl 20 feet bgs West <br /> ' Fall 2006 0 to 10 feet msl 20 feet msl 10 to20 feet bgs Northwest <br /> Fall 2008 0 to 10 feet msl 20 feet msl 10 to 20 feet bgs Northwest <br /> ' msl mean sea level <br /> bgs below ground surface <br /> Groundwater depth and flow direction may be influenced by local pumping, rainfall, and <br /> irrigation patterns. With the nearby groundwater extraction at Sharpe Army Depot, local <br /> ' irrigation, well pumping and recharge at California Natural Products (CNP) and other <br /> 101486.4/ST011R242 Page 5 of 17 October 31, 2011 <br /> Copyright 2011 Kleinfelder <br />