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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 /> MW549C(see Figure 6) <br /> MW310CD C ND ND ND 21.45 22.17 166.5 156 166 4 0.01 <br /> MW436C C 5.1 ND ND 21.63 22.53 96 85.5 95.5 4 0.01 <br /> M W448C C 23 ND ND 23.68 23.86 98.5 88 98 4 0.01 <br /> MW547C C 5.3 ND ND 1 24.14 1 23.61 1 85.5 1 75 1 85 1 4 0.01 <br /> MW550C(see Figure 6) <br /> MW440C C NS NS 20.83 20.95 86.5 70 80 4 0.01 <br /> M W448C C 23 ND ND 23.68 23.86 98.5 88 98 4 0.01 <br /> MW547C C 5.3 ND ND 24.14 23.61 85.5 75 85 4 0.01 <br /> P5C C 8.3 ND ND 21.03 20.97 98 92.5 97.5 2 0.01 <br /> MW551B (see Figure 8) <br /> MW504B B ND ND ND 13.42 13.38 57.5 47 57 4 0.01 <br /> MW507B B 0.62 J ND ND 22.52 21.33 57 46.33 56.33 4 0.01 <br /> MW531B B Nn ND ND 15.12 14.03 71.5 61 71 4 0.02 <br /> MW532B B 6.3 ND ND 24.02 22.36 80.5 60 80 4 0.02 <br /> MW537B B 20 ND ND 16.94 15.12 80 70 80 4 0.02 <br /> MW541B B 0.53 J ND ND 18.74 17.66 75.5 65 75 4 0.01 <br /> MW542B B 21 ND ND 24.06 22.33 72.5 62 72 4 0.01 <br /> MW551C(see Figure 6) <br /> MW504C C 17 ND ND 15.01 13.34 144 133 143 4 0.01 <br /> MW507C C 0.82 J ND ND 23.29 21.36 145 130 145 4 0.01 <br /> MW532C C 3.9 ND ND 23.99 22.21 140.5 130 140 4 0.02 <br /> MW537C C 27 ND ND 17.02 15.07 141.5 131 141 4 0.02 <br /> P7C C 15 ND ND 16.9 14.22 135.5 130 135 2 0.02 <br /> Ahtna Environmental,Inc. Page 2 of 3 <br />