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FIGURE 3 - EXTRACTON WELL SCHEMATIC <br /> Extraction Well EW-1 <br /> Well Vault <br /> Surface — <br /> --,double containment <br /> _ Water <br /> Air <br /> 2-ft.bgs — Well Boring (12-inch diameter) <br /> Casing (4.5-in. diameter) <br /> Cement Seal <br /> 5-ft.bgs Bentonite Seal { 1 bucket pellets) <br /> 7-ft.bgs <br /> 10-ft.bgs <br /> Sand Pack <br /> Screen (.020 in.) <br /> 25-ft.bgs Pump - 1-5 gpm <br /> Bentonite Seal ( 1 bucket pellets) <br /> 30-ft,bgs <br />