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KLE/NFELDER <br /> �9Ihcp1<.fllgM1tYIWOM, <br /> The general direction of regional groundwater flow in the area of the site, based on reports <br /> issued by the San Joaquin County Flood Control and Water Conservation District are <br /> summarized in the following Text Table 1. <br /> TEXT TABLE 1 <br /> REGIONAL GROUNDWATER ELEVATION AND FLOW DATA <br /> CALIFORNIA NATURAL PRODUCTS FACILITY <br /> LATHROP, CALIFORNIA <br /> Approximate Ground-Water AppDepth to Flow Direction of <br /> Date Elevation of <br /> Elevation Groundwater Groundwater <br /> of County (from County Property (calculated from (based on <br /> Map 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 CNP and other nearby properties, groundwater flow <br /> beneath CNP has shown varying flow directions often differing from the "regional' flow <br /> directions summarized in Table 1 above. <br /> According to a file review of Sharpe Army Depot records on file with the California State <br /> Department of Toxic Substances Control, Sharpe has eight extraction wells for withdrawal of <br /> the shallow (A-Zone) water within approximately 1200 feet of the northeast corner of the CNP <br /> plant. Those wells are EWA1, EWA3, EWA5, EWA6, EWA7, EWA8, EWA9, and EWA10. <br /> Extraction of groundwater is likely impacting shallow groundwater flow, and further may be <br /> responsible for the variance between the flow directions summarized in Text Table 1 and <br /> historical groundwater flow directions noted at the CNP facility (Appendices, Table 2). <br /> 101486.7/SAC14R0504 Page 5 of 13 April 28, 2014 <br /> Copyright 2014 Kleinfelder <br />