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FIGURE 1 <br />TYPICAL GROUND WATER MONITORING HOLE COMPLETIONS <br /> <br />Overburden <br />Coal Zone <br />Underburden <br />4' sch. 40 pvc <br />-Grout 0 to 5 ft. <br />Cuttings <br />3/8' Bentonite pellets <br />OVERBURDEN <br />Mill slat Perfs COAL ZONE <br />LDx COAL <br />UNDERBURDEN <br />4' sch. 40 pvc <br />Grout 0 to 5 ft. <br />- Cuttings <br />4' sch. 40 pvc <br />Grout 0 to S ft. <br />Cuttings <br />3/8' Bentonite pellets <br />Mill Slot Perfs <br />LDx COAL <br />3/8' Bentonite pellets <br />LDx COAL <br />Mill Slot Perfs