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Groundwater Well Installation Work Plan Sharpe Army Depot <br /> Lathrop, California <br /> Table 2. Details for Existing Wells <br /> in the Vicinity of New Extraction and Monitoring Wells <br /> Depth to Screen <br /> TCE PCE CCI4 Water TOC Total Well Beginning Screen Casing Screen <br /> (µg/L; (µg/L; (µg/L; (ft btoc; Elevation Depth Depth End Depth Diameter Slot Size <br /> Well Name Zone 3Q21) 3Q21) 3Q21) 3Q21) (ft amsl) (ft bgs) (ft bgs) (ft bgs) (inches) (inches) <br /> MW552C(see Figure 6) <br /> MW504C C 17 ND ND 15.01 13.34 144 133 143 4 0.01 <br /> MW510C C ND ND 26.74 20.27 160 150 160 4 0.01 <br /> MW532C C 3.9 ND ND 23.99 22.21 140.5 130 140 4 0.02 <br /> MW528C C 9.3 ND ND 1 23.84 1 18.77 1 142.5 1 132 1 142 1 4 0.01 <br /> MW537C C 27 ND ND 17.02 15.07 141.5 131 141 4 0.02 <br /> P7C C 15 IND ND 16.9 14.22 135.5 130 135 2 0.02 <br /> Notes: <br /> Results exceeding the aquifer cleanup level are shown in bold. <br /> µg/L=micrograms per Liter <br /> amsl =above mean sea level <br /> bgs= below ground surface <br /> btoc=below top of casing <br /> CCI4=Carbon Tetrachloride <br /> ft=foot/feet <br /> J = Reported values are estimates <br /> J-=Reported values are estimated with a low bias <br /> ND=nondetect <br /> NS=Not sampled <br /> PCE=Tetrachloroethene <br /> TCE=Trichloroethene <br /> TOC=top of casing <br /> Ahtna Environmental,Inc. Page 3 of 3 <br />