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r <br />_ I-- <br />1ydroGeo, Inc. <br />Surface & Groundwater Ilpdrologv <br />EXHIBIT 71 <br />HYDROLOGIC CHARACTERIZATION <br />PR-12 AND SOUTH OF THE DIVIDE AREAS <br />AND MONITORING PLAN <br />WEST ELK MINE <br />Prepared for <br />Mountain Coal Company, L.L.C. <br />West Elk Mine <br />P.O. Box 591 <br />5174 Hwy. 133 <br />Somerset, Colorado 81434 <br /> <br />September 2007 <br />Prepared by <br />HvdroGeo, Inc. <br />126 Elk Avenue <br />P.O. Box 2979 <br />Crested Butte, Colorado 81224 <br />970-349-6334 <br />September 2007 <br />HvdroGeo, Inc. <br />•