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_ - - -24" <br /> 12" <br /> I <br /> 4 MINIMUM 4" THK <br /> 4 e • CONCRETE PAD <br /> v , -f- <br /> N <br /> a d TRAFFIC BOX <br /> N <br /> P < P <br /> PLAN <br /> MINIMUM 4"THK CONCRETE PAD <br /> EXISTING GRADE <br /> ML <br /> TRAFFIC BOX <br /> LOCKING WELL CAP <br /> 8-INCH DIAMETER HOLLOW <br /> STEM AUGER BOREHOLE <br /> CEMENT SEAL <br /> 1-INCH BLANK PVC CASING, <br /> Sol FLUSH THREADED SCHEDULE 40 <br /> HIM <br /> MIMI <br /> - <br /> r r i <br /> BENTONITE PELLET SEAL, <br /> MIN 5-FEET THICK <br /> r • r i r <br /> CLEAN IMPORTED#3 SAND <br /> 1-INCH SLOTTED PVC CASING, <br /> FLUSH THREADED SCHEDULE 40, <br /> MIN 0 020 SLOT <br /> PVC BOTTOM CAP <br /> SECTION NOT TO SCALE <br /> Figure 2. Typical Air Sparging Well Construction <br />