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1 I0I.D. COLUMN PIPE TRAFFIC ISED VAULT <br /> 3/4" I.D. SOUNDING TUBE <br /> CEMENT PAD , <br /> e <br /> 10' LOCKING STEEL COVER <br /> � a . <br /> WELL SEAL <br /> 13-3/4" NOMINAL BOREHOLE <br /> 4" I.D. SCHEDULE 40 <br /> FLUSH—THREADED PVC CASING <br /> NEAT CEMENT <br /> 10" MILD STEEL CONDUCTOR CASING <br /> a <br /> CENTRALIZER (TYPICAL , <br /> AT 40' INTERVALS) <br /> VOLCLAY GROUT <br /> a <br /> 3/8" INCH BENTONITE CHIPS <br /> as <br /> C1db <br /> NO. 3X12 GRAVEL PACK 4" I.D. SCHEDULE 40 <br /> FLUSH—THREADED PVC SCREEN <br /> 0.030 INCH SLOTS <br /> CENTRALIZER <br /> 12" NOMINAL BOREHOLE <br /> ,po <br /> 4' I.D. SCHEDULE 40 a J <br /> FLUSH THREADED END CAP <br /> NOT TO SCALE <br /> FIGURE 2 <br /> SCHEMATIC WELL CONSTRUCTION DIAGRAM <br /> INTERMEDIATE ZONE WELL MW-446 <br /> 'J6C1wel <br />