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t ,~ <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 9, 1997 <br />RECEI~JED <br />Stl' 121997 <br />Division of ~~mietais a ueelogy <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 />~II ~I~~I~~I~~~~~ ~I~ <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 />The following presents Mountain Coal Company's (MCC) current summary of geotechnical <br />issues for the Sylvester Gulch Site Development Project, a general construction summary, and <br />our current schedule of critical activities. This report covers a short week because no activities <br />occurred over the Labor Day weekend. The following information covers the time period from <br />September 2, 1997 -September 7, 1997. <br />General Construction Summary and Schedule <br />Excavation of Phase 1C and Phase 1D of the RPE and creation of structural fill via screening <br />operations continues. Pit run material is also being imported from off site and screened and <br />crushed to create additional structural fill. With the exception of the detention pond above the <br />Shaft #1 and #2 site, construction activities are in progress on all subtasks of the project. Work is <br />approximately 50% complete on the Shaft #3 site development and Electric Borehole road. MSE <br />Wall G (Block Wall) is approximately 40% complete. MSE wall F-1 and F-2 are approximately <br />65% complete with approximately 48 feet (maximum fill height) completed as of August 29. <br />Significant rain events that halted construction occurred on Thursday, September 4, and Saturday, <br />September 6. <br />Current Schedule <br />A gantt chart of the schedule and progress of general construction activities for the project is <br />attached. Other specific tasks of interest are as follows: <br />