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:; <br />Mountain Coal Company <br />West Elk Mine <br />Post Office Box 591 <br />Somerset, Colorado 81434 <br />Telephone 970 929-5015 <br />Fax 970 929-5595 <br />September 22, 1997 <br />Mr. Michael P. Boulay <br />RECEIVED <br />SEP 2 5 1997 <br />Dr. Jim Pendleton <br />Colorado Division of Minerals & Geology I)ivs;on of m~nelals & 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 />Deaz Mr. Boulay and Dr. Pendleton: <br />III IIIIIIIIIIIIIIII <br />999 <br /> <br />The following presents Mountain Coal Company's (MCC) current summary of geotechnical issues for the <br />Sylvester Gulch Site Development Project, a general construction summary, and our current schedule of <br />critical activities. The following information covers the time period from September 16, 1997 - <br />September 21, 1997. <br />General Construction Summary and Schedule <br />Excavation of Phase 1C and Phase ID of the RPE is nearing completion as material is exhausted from <br />these areas. Creation of structural fill via screening operations continues in this area using pit run material <br />imported from off site. Culvert CCW-1 B is wmplete to approximately 50 feet east of Manhole #7. Work <br />is approximately 95% complete on the Shaft #3 site development and Electric Borehole road. MSE Wall G <br />(Block Wall) is approximately 85% complete. MSE walls F-1 and F-2 are now 100% complete after the <br />decision to lower the final finished height of the embankment (see additional detail below). Excavation <br />work is progressing on portions of the lower road. Progress has been slowed by significant rain events <br />which occurred throughout the week. <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 H <br />Water Tank Extension <br />Lower Sylvester Gulch Road <br />In Progress <br />in Progress <br />Indefmite Hold <br />Begin 8/27 <br />Completed 9/18 <br />Complete 9/24 <br />Complete 10/3 <br />Completed 9/ll <br />Complete 10/3 <br />