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• WELL SEAL • <br /> 2 INCH I.D. COLUMN PIPE <br /> 3/4' I.D. SOUNDING TUBE LOCKING STEEL COVER <br /> REFERENCE POINT MONUMENT <br /> jp 0 <br /> I "I <br /> N <br /> 0 APPROXIMATE DEPTH <br /> CEMENT PAD BELOW LAND SURFACE <br /> (IN FEET) <br /> 10.5' NOMINAL BOREHOLE <br /> 4" 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 /> N <br /> SANDFILTER 0 90.0 <br /> 4" I.D. SCHEDULE 40 � <br /> FLUSH-THREADED PVC WIRE WRAP — <br /> in <br /> CENTRALIZER —_ <br /> — og <br /> _a <br /> 4' I.D. SCHEDULE 40 <br /> FLUSH THREADED END CAP O� <br /> APPROX. 110 <br /> TD VARIABLE <br /> FIGURE 2 <br /> SCHEMATIC WELL CONSTRUCTION DIAGRAM <br /> UPPER INTERMEDIATE ZONE EXTRACTION WELL <br /> DUDEK& ASSOCIATES,INC. <br />