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LOCKING WELL COVER <br /> CONCRETE APRON <br /> LOCKING CAP <br /> NEAT CEMENT <br /> 20 FEET <br /> BLANK 40 PVC CASING (SCHEDULE 40) <br /> 0 - 25 FEET <br /> BENTONITE PLUG <br /> if <br /> 23 FEET <br /> GROUND WATER. @ 26 FEET - <br /> '+ FILTER PACK (# �YAND) Ilk <br /> 0.020 SLOTTED PVC SCREEN (SCHEDULE 40) <br /> 25 50 FEET - <br /> TOTAL DEPTH 50 FEET <br /> CAP <br /> 12" BOREHOLE DIAMETER <br /> EXTRACATION WELL <br /> ALL DEPTHS RELATIVE TO SURFACE GRADE <br /> NOT TO SCALE <br /> EXTRACTION WELL DESIGN ,4dvmenar�ced <br /> FORMER HESS DUBOIS CLEANERS GeoEnviron"OrJUA , Inc. <br /> 348 WEST HAR D I N G WAY PROJECT NO. 96-0114 FILE: 0114/FIG4 FIGURE' <br /> STOCKTON, CALIFORNIA DATE: 29 DECEMBER 2000 DRAWN BY: MAC 4 <br />