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I <br />Mountain Coal Company <br />West Elk Mine <br />Post Office Box 597 <br />Somerset, Coloredo 81434 <br />Telephone 970 929-5075 <br />Fax 970 929-5595 <br />September 30, 1997 <br />_~,,..~~, ..=r <br />OCT 0 5 1991 <br /> <br />Mr. Michael P. Boulay <br />Dr. Jim Pendleton <br />Colorado Division of Minerals & Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Geotechnical Report -Sylvester Gulch Site Development <br />Ref: Permit Revision 07 and Technical Revision 79 to Permit No. C-80.007, <br />West Elk Mine <br />Dear Mr. Boulay and Dr. Pendleton: <br />III IIIIIIIII IIII III <br />999 <br />The following presents Mountain Coal Company's (MCC) current summary of geotechnical issues for the <br />Sylvester Gulch Site Development Project, a general constmction summary, and our current schedule of <br />critical activities. The following information covers the time period from September 22, 1997 - <br />September 29, 1997. <br />General Construction Summary and Schedule <br />Excavation of Phase 1C and Phase 1D of the RPE is complete, however, creation of stmctural fill and base <br />course via screening operations continues in this area using pit run material imported from off site. No <br />work was performed on culvert CCW-1B this week. Work was completed on the Shaft #3 site <br />development and Electric Borehole road, with the exception of fmal base course. MSE Wall G (Block <br />Wall) is 100% complete. MSE walls F-1 and F-2 are 100% complete, and the final road alignment from <br />the embankment to the intake shaft bench is in progress. Excavation work is progressing on portions of the <br />lower road, and additional French drains +vere installed. Progress was slowed by significant rain events <br />which occurred Sunday, Monday, Thursday, and Friday. <br />Current Schedule <br />A gantt chart of the schedule and progress of general construction activities for the project is attached. <br />Other specific tasks of interest are as follows: <br />Main Crossing (Wall F-1 and F-2) <br />Wall G <br />Pond SG-1 and Culvert CCW-1B <br />Wall E <br />Water Tank Extension <br />Lower Sylvester Gulch Road <br />In Progress <br />in Progress <br />Indefinite Hold <br />Begin 8/27 <br />Completed 9/18 <br />Completed 9/25 <br />Complete 10/3 <br />Complete 10/7 <br />Complete l0/3 <br />