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WATER PROOF WELL BOX <br />GROUND LEVEL <br />LABELED 'VAPOR EXTRACTION WELL' <br />LOCKING WELL CAP <br />3 FT. <br />CEMENT SEAL <br />CEMENT SEAL <br />WELL CASING <br />2 FT <br />BENTONITE SEAL <br />1 FT. <br />. .. ...... <br />FILTER PACK <br />9 FT. <br />WELL SCREEN <br />BORING WALL <br />END CAP <br />NOT TO SCALE <br />FIGURE <br />5 <br />PROPOSED <br />VAPOR EXTRACTION <br />WELL <br />CONSTRUCTION DETAIL <br />VE\./-DTL <br />