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EMCO WHEATON A722 <br /> MONITORING WELL BOX LOCKING EXPANSION PLUG <br /> OR EQUIVALENT <br /> EXISTING SURFACE <br /> 2' x 2 ' x F REBAR REINFORCED <br /> CONCRETE PAD (IF REQUIRED) <br /> 2' <br /> 8' <br /> SAND-CEMENT SLURRY <br /> OR NEAT CEMENT <br /> T, BENTONITE SEAL <br /> 1 <br /> WELL CASING <br /> 1, 4-INCH DIAMETER <br /> SCHEDULE 40 PVC <br /> If <br /> --30' <br /> WATER LEVEL <br /> 6 to 14' bgl <br /> SAND FILTER PACK <br /> LONESTAR #3 SAND <br /> —20' <br /> = WELL SCREEN <br /> MACHINE SLOTTED PVC <br /> = 0 02-INCH SCREEN <br /> PVC THREADED END-CAP <br /> OR SLIP CAP ATTACHED WITH <br /> STAINLESS STEEL SCREWS <br /> NOT TO SCALE 10-INCHES (4-INCH WELL) <br /> PROPOSEDDUAL-PHASE WELL CLEARWATEIGROUP <br /> CONSTRUCTION DETAILS (DPW-1) <br /> Barnes Trucking, 1817 Fresno Avenue Project No Date Figure <br /> Stockton,California ZB178C 08/01 6 <br />