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T s I <br /> i <br /> GROUND SURFACE <br /> .PROTECTIVE COVER.AT GRADE <br /> k <br /> HOLLOW STEM AUGER BOREHOLE(8-12 INCH) <br /> I <br /> CEMENT SEAL i <br /> I <br /> 4-INCH BLANK PVC,CASING--FLUSH THREADED SCHEDULE 40 <br /> e <br /> . BENTONiTIr PEPELLETSEAL-(2-FOO T:} <br /> - I <br /> 4 INCH SLOTTED PVC CASING FLUSH <br /> THRI±ADED SCHEDULE 40 <br /> CLEAN IMPORTED SAND <br /> PVC 16OTTOM PLUG i <br /> NOT TO SCALE <br /> a <br /> Figure 4. Typical Monitoring Well <br /> k <br />