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r ' <br /> 24" } <br /> 6"THK.CONCRETE <br /> PAD <br /> 24" + <br /> STANDARD CNI-208 <br /> 12" OR EQUIVALENT VA.ILT BOX <br /> PLAN <br /> 6"THK. CONCRETE PAD <br /> I <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 /> 4-INCH BLANK PVC CASING, <br /> FLUSH THREADED SCHEDULE 40 <br /> BENTONITE PELLET SEAL <br /> i <br /> NOTE:EXISTING RIVETS IN CNI VUALT BOX <br /> ARE TO BE REMOVED AND REPLACED WITH <br /> 3"X114"BOLTS EXTENDING OUTWARD INTO <br /> CONCRETE PAD FOR ADDITIONAL SUPPORT. <br /> i <br /> 4-INCH SLOTTED PVC CASING, <br /> FLUSH THREADED SCHEDULE 40 <br /> CLEAN IMPORTED SAND <br /> PVC BOTTOM CAP <br /> SECTION NOT TO SCALE <br /> Exhibit A. Typical Monitoring Well Construction <br />