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. � No. 3369�DA <br /> APPROXIMATE LOCKING STEEL COVER <br /> DEPTH SELOIY LAND SURFACE, WATER LEVEL MEASURING POINT <br /> !N FEET TYPE:3/-inch ACCESS IN SLIP CAP <br /> ELEVATION 20.31 FEET ABOVE <br /> MEAN SEA LEVEL <br /> O CEMENT PAD <br /> Bs/e-inch LOCKING STEEL COVER <br /> I1�-inch BOREHOLE <br /> 4—inch SCHEDULE 40 <br /> /10 FLUSH-THREADED PVC CASING <br /> CEMENT <br /> 30 CENTRALIZER <br /> __39 <br /> 3/8 -inch BENTONITE PELLETS <br /> _N42 <br /> No 50 FOUNDRY SAND <br /> N44 <br /> 49 <br /> No 20 SAND FILTER PACK <br /> 4-inch SCHEDULE 40 <br /> FLUSH THREADED PVC SCREEN, <br /> 0 020-inch slots <br /> Y <br /> 6 9 ••• <br /> CENTRALIZER <br /> R <br /> T 2 4-inch SCHEDULE 40 <br /> FLUSH-THREADED PVC CASING <br /> WITH END CAP <br /> FIGURE A-7. SCHEMATIC WELL CONSTRUCTION DIAGRAM <br /> FOR SHALLOW MONITOR WELL KS-4 <br />