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GnoUtln <br />' FLUSH MOUNTED COVER SU"FACE <br /> V CEMENT GROUT - -- LOCKING CAP <br /> 1 2 5'BENTONITE SEAL <br /> 1 4" DIAMETER SCHEDULE 40 <br /> FLUSH THREAD PVC CASING <br /> 57' BENTONITE GROUT 65' <br /> 2' BENTONITE SEAL --10" OD HOLLOW STEM ANGER BORING <br /> POTENTI <br /> �-�-OMETRIC SURFACE POTENTIOMETRIC SURFACE <br /> - - - - - - - - - - - - -- - - <br /> 27' MONTEREY #3 SAND WELL SCREEN 0 02" SLOT OPENINGS <br /> 25' (90' to 65') <br /> �. TlinEADED BOTTOM <br /> PLUG <br /> TOTAL DEPTH OF BOREHOLE = 90' <br /> FIGURE 7. MONITORING WELL MW-20 DESIGN <br />