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Table 2.04.6-6 Overburden Drillhole Summary <br />Drill Hole <br />Number <br />Section <br />Location <br />of Drill <br />Hole Mining Area <br />Total Drill <br />Hole Depth (ft) <br />Thickness <br />of Coal (ft) <br />Thickness of <br />Overburden (ft) <br />Thickness of <br />Unsuitable <br />Overburden (ft) <br />Unsuitable <br />Overburden (%) Unsuitable Constituents <br />C-04-04 1 34 Collom Lite 774.5 111.2 663.3 233.65 35.23% pH, EC, SAT, SAR, Se <br />C-04-14 35 Collom Lite 450.3 96.0 354.3 95.15 26.86% SAT, SAT, Se <br />C-04-25 2 Collom Lite 760.7 121.0 639.7 199 31.11% pH, SAT, SAR, Se, Mo <br />C-04-36 1 Collom Lite 750.8 140.2 610.6 168.95 27.67% pH, SAT, SAR, Se, ABP <br />C-05-26 11 Collom Lite 658.0 104.5 553.5 325.8 58.86% pH, SAT, SAR <br />C-05-32 12 Collom Lite 1 818.2 158 660.7 315.95 47.82% pH, SAT, SAR, Se <br />Total 1 1 4212.5 730.51 3482.11 1338.5 38.44% pH, EC, SAT, SAR, Se, Mo, ABP <br />I Section Location: Section of drill hole location, T3N, R94W, 6PM <br />Unsuitable = One or more parameters in the marginal or unsuitable range as defined in (WDEQ-LQD), <br />Guideline No. 1, Topsoil and Overburden, Table I-4 (August, 1994). (Table 2.04.6-5)