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24" 1 <br /> 6"THK.CONCRETE <br /> PAD <br /> 24" + <br /> STANDARD CN1.208 <br /> 12" OR EQUIVALENT VAULT BOX <br /> 12"—Q <br /> PLAN <br /> ASPHALT PAD <br /> i?XISTING GRADE <br /> STANDAFD CNI-208 <br /> OR EQUIVALENT VAULT BOX <br /> --LOCKING <br /> t WELL CAP <br /> g <br /> HOLLOW STEM AUGER BOREHOLE <br /> i (12—INCH DIAMETER) <br /> j CEMENT SEAL <br /> B—INCH BLANK PVC CASING, <br /> FLUSH THREADED <br /> BENTONITE PELLET SEAL <br /> J <br /> , <br /> a _ f <br /> 6—INCH SLOTTED PVC CASING, <br /> i FLUSH THREADED <br /> CLEAN IMPORTED SAND <br /> — —_— PVC BOTTOM CAP — <br /> i <br /> SECTION NOT TO SCALE . <br /> r _ <br /> f Figure 1. Typical ExtractionWell Construction <br /> t <br />