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- -~ MOUNTAIN COAL A Subsidiaq~ of Amh Western Remuaes, LLC ii i i ii i ii i ii iiii iii l 999 West Elk Mine P O Box 591 5174 Highway 133 Somerset, CO 81434 (970)929-5015 Fax (970) 929-5595 RECEIVED August 12, 1999 AUG 261999 Mr. Jim Burnell Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 Division of Minerals & Geology RE: Technical Revision No. 86 (Sylvester Gulch As-built); West Elk Mine; Permit No. C-80-007 Dear Jim: This letter is provided in response to the letter dated May 14, 1999, from Larry Routten in regazds to Map 3E that shows the drainage basins for Shaft #3. In addition, a revised SEDCAD model for the small area exemption demonstration has been included. Please note that a revised Map 3E, which accurately reflects the as-built topography was included in MCC's responses dated July 14, 1999 for TR#86. Please note that apre-construction contour map was utilized for the prepazation of Map 3E that was submitted with MCC's application. However, the drainage basins had been correctly drawn, as the incorrect contours are located outside the Shafr #3 area (i.e. road to the shafr bench, the inclusion of the topsoil pile, electric borehole and degas hole). The roughly rectangulaz azea shown on the map represents the Shafr #3 pad, and the triangular pad area represents the topsoil pile that had been planned, but was not constructed. 2. Map 3E is designed to only show the locations of the watersheds. All drainage structures are shown on Map 54B. Map 3E has been corrected with as-built topography and provided with MCC's response letter dated July 14, 1999. 4. The electric bore hole pad is shown on Map 3E, but did not represent the as-built configuration, as discussed above. The revised Map 3E provided with MCC's response letter dated July 14, 1999, has included the as-built topography. See response to #2.