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4" TO 6"THK CONCRETE <br /> PAD <br /> STANDARD TRAFFIC BOX <br /> PLAN <br /> 4"TO 6"THK CONCRETE PAD <br /> EXISTING GRADE <br /> STANDARD TRAFFIC BOX <br /> LOCKING <br /> WELL CAP <br /> HOLLOW STEM AUGER BOREHOLE <br /> CEMENT SEAL <br /> I <br /> 4-INCH BLANK PVC CASING <br /> BENTONITE PELLET SEAL <br /> 4-INCH PVC CASING WITH 0 020 SLOTS <br /> CLEAN IMPORTED SAND <br /> PVC BOTTOM CAP <br /> SECTION NOT TO SCALE <br /> FIGURE 2 TYPICAL GROUNDWATER MONITORING WELL CONSTRUCTION <br />