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WATER PROOF WELL BOX � <br /> GROUND LEVEL if <br /> Ak -- <br /> ���' _ LOCKING WELL CAP <br /> i <br /> WELL CASING <br /> 21 FT <br /> =- �f CEMENT SEAL <br /> r` r <br /> mr <br /> r <br /> 1 2 FT r BENTONITE SEAL t <br /> 2 FT <br /> z <br /> FILTER PACK <br /> 5 FT <br /> - STATIC GROUNDWATER LEVEL <br /> - f <br /> WELL SCREEN <br /> ' 15 FT <br /> BORING WALL <br /> END CAP <br /> NOT TO SCALE <br /> -r rt ;_ BENTONITE-SEAL <br /> - <br /> FIGURE 4 <br /> TYPICAL MONITORING WELL CONSTRUCTION DETAIL <br /> 1 <br />