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MANHOLE OVER <br /> GROUND SURFACE <br /> STEEL WELL HOUSING IO INCH DIAMETER BARING <br /> WITH LOCKING COVER (MINIMUM) <br /> WELL CAP CEMENT GROUT <br /> 4 INCH DIAMETER WELL <br /> CASING <br /> T <br /> 3-5 FT. (TYPICAL) BENTONITE SEAL <br /> , <br /> SAND FILTER PACK <br /> • 4 INCH DIAM. PERF13RATO <br /> WELL CASING <br /> BOTTOM CAP <br /> NOT TO SCALE <br /> FIGURE 3 BIIlSYSTEMS <br /> SCHEMATIC DIAGRAM MANAGEMENT <br /> MONITORING WELL CONSTRUCTION INTERNATIONAL <br />