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F <br /> 1 <br /> i <br /> 24- <br /> 6- THK.CONCRETE <br /> PAD <br /> 24- STANDARD CNI-208 <br /> I -(D7 <br /> 12 I OR EQUIVALENT VAULT BOX <br /> 12`1 <br /> PLAN <br /> 6" THK.CONCRETE PAD <br /> EXISTING GRADE <br /> STANDARD CNI-208 <br /> OR EQUIVALENT VAULT BOX <br /> LOCKING <br /> WELL CAP <br /> HOLLOW STEM AUGER BOREHOLE <br /> CEMENT SEAL <br /> 2-INCH BLANK PVC CASING. + w <br /> FLUSH THREADED SCHEDULE 40 <br /> j BENTONITE PELLET SEAL <br /> 2-INCH SLOTTED PVC CASING. <br /> FLUSH THREADED SCHEDULE 40 <br /> CLEAN IMPORTED SAND <br /> PVC BOTTOM CAP <br /> SECTION NOT TO SCALE <br /> Figure 1. Typical Monitoring Well Construction <br />