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' k'■ KLEINEELDER <br /> Groundwater depth and flow direction may be influenced by local pumping, rainfall, and <br /> irrigation patterns. Evaluation of such factors is beyond the scope of this assessment. Variations <br /> of this sort may lead to localized groundwater flow that may go in virtually any direction. With <br /> the nearby groundwater extraction at Sharpe Army Depot, local irrigation well pumping and <br /> recharge at California Natural Products (CNP) and other nearby properties, groundwater flow <br /> beneath CNP has shown other flow directions. Based on the recent Nolte survey, and water level <br /> measurements made by CNP and Kleinfelder personnel the following table of local groundwater <br /> elevation and flow conditions beneath the CNP properties was compiled. <br /> ' Table 2 <br /> Groundwater Elevation and Flow Data <br /> California Natural Products Facility <br /> ' Lathrop, California <br /> Date Plant Wells' Recharge Area Plant Wells' Recharge Area Groundwater <br /> & Groundwater Wells' Depth to Wells' Depth to Flow Direction <br /> Measurements Elevations Groundwater Groundwater Groundwater <br /> By (feet msl) Elevations (feet bgs) (feet bgs) <br /> ' (feet msl) <br /> 4/8/01 8.54 to 8.70 9.14 to 10.08 11.12 to 11.49 12.20 to 13.34 Plant Area: East- <br /> (CNP) Southeast <br /> ' Recharge Area: <br /> East-Northeast <br /> 4/22/01 8.51 to 8.65 9.28 to 9.87 11.15 to 11.53 12.06 to 12.58 Plant Area: East- <br /> (CNP) Southeast <br /> ' Recharge Area: <br /> Can not be <br /> determined <br /> ' 4/29/01 8.35 to 8.60 9.07 to 10.65 11.27 to 11.57 12.27 to 12.69 Plant Area: East- <br /> (CNP) Southeast <br /> Recharge Area: <br /> Northeast <br /> ' 5/9/01 xxxx xxx xxxx xxxxx Plant Area:xxxx <br /> (Kleinfelder) Recharge Area: <br /> xxxxxx <br /> msl mean sea level <br /> bgs below ground surface <br /> CNP California Natural Products <br /> According to a recent 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 withdrawl of the <br /> ' shallow (A-Zone) water within approximately 1200 feet of the northeast corner of the CNP plant. <br /> Those wells are EWA1, EWA3, EWA5, EWA6, EWA7, EWA8, EWA9, and EWA10. <br /> Extraction of groundwater to that magnitude, is undoubtedly impacting shallow groundwater <br /> ' flow, and further explains the variance between the flow directions in Tables 1 and 2. <br /> 20-4587-0IMP I/2011 P 128 Page 4 of 12 <br /> Copyright 2001,Kleinfelder, Inc. May 8,2001 <br />