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LOCKING STEEL COVER <br /> SUP CAP <br /> O <br /> REFERENCE POINT MONUMENT I <br /> 0 APPROXIMATE DEPTH <br /> CEMENT PAD BELOW LAND SURFACE <br /> (IN FEET) <br /> 6" NOMINAL BOREHOLE <br /> 2" I.D. SCHEDULE 40 <br /> FLUSH-THREADED PVC CASING <br /> NOT TO SCALE <br /> VOLCLAY GROUT <br /> 3/8" INCH BENTONITE CHIPS <br /> +I <br /> (V <br /> NO.2 SANDFILTER �� o <br /> 2" I.D. SCHEDULE 40 Q <br /> FLUSH-THREADED PVC SCREEN <br /> 0.020 INCH SLOTS - op <br /> — o <br /> CENTRALIZER <br /> 8 U) <br /> ° — o <br /> 2" I.D. SCHEDULE 40 <br /> a° <br /> FLUSH THREADED END CAP O° O <br /> VARIABLE TO 90, 108, 133 <br /> FIGURE 3 <br /> SCHEMATIC WELL CONSTRUCTION DIAGRAM <br /> LOWER SHALLOW, LOWER INTERMEDIATE, AND <br /> UPPER INTERMEDIATE ZONE PIEZOMETER <br /> DUDEK& ASSOCIATES,INC. <br />