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.. <br /> <br /> <br />Mountain Coal Company <br />West EIk Mine <br />Post Office Box 591 <br />Somerset, Colorado 81434 <br />Telephone 970 929-5015 <br />Fax 970 929-5595 <br />August 18, 1997 <br />Nuu 2 5 1997 <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 />~~~ I~~I~~!~~II~~ I~~ <br /> <br />~~r,EIVED <br />~,~,,,,,,, ,,, ,,,~uerais tS Geology <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. The following information covers the time period from <br />August 12, 1997 -August 17, 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. With the exception of the Lower Sylvester Gulch Road (and MSE Walls A- <br />E) and the detention pond above the Shaft #1 and #2 site, construction activities are in progress <br />on all sub-tasks of the project. Construction of the Pond SG-1 embankments is approximately <br />50% complete. Installation of the 54" Clearwater diversion (CCW-1B) is approximately 40% <br />complete. Excavation of the north slope of the shaft sites, for final alignment of the Main Access <br />Road from Station 85 to end, and excavation of the Electric Borehole Road continue. MSE wall <br />F-1 and F-2 construction continues with approximately 16 lifts (24 feet maximum fill height) <br />completed as of August 16. Concrete work at the substation is approximately 80% complete, and <br />distribution and transmission line pole setting is approximately 50% complete. Brief afternoon <br />showers occurred at the site throughout the week with a significant rain occurring Tuesday night. <br />