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<br />III IIIIIIIIIIIII III <br />999 <br />STATE OF COLORADO <br />,. <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Nalu rat Resources <br />1313 Sherman 8t., Room 215 <br />Denver, Colorado 80203 <br />Phone (303) 866-3567 <br />FA\: (303) 8328706 <br />DIVISION OF <br />MINERAL S <br />GEOLOGY <br />RECLAMATION <br />MINING•SAFETY <br />18 September 2000 cnl onJ;' <br />Greg E. N'alc her <br />Mr. Henry Barbe EaecuGae DireUUr <br />Mountain Coal Com an Michael B. Long <br />P Y Drvis nn Ducaor <br />P.O. Box 591 <br />Somerset CO 81434 <br />Subj: Technical Revision 86 Adequacy Review <br />Deaz Mr. Barbe: <br />The Division has completed review of the responses submitted by Mountain Coal Company, <br />received 4 August 2000, to the Divisions letter dated 18 February 2000 regarding adequacy of <br />technical revision #86 for the West Elk Mine. Following are the Division's comments numbered <br />according to the remaining outstanding comments. <br />Sylvester G:dch <br />4. Response accepted. <br />8. Response accepted. <br />10. Response accepted. <br />19. Response accepted. <br />Additional question: On Map 3E, the degas pad and shaft 3 pad are still designated as small <br />area exemptions (SAE). On map 54B (Sediment and Drainage Control. Sylvester Gulch <br />Facilities Area) it is not clear that these are actually small area exemptions from the routing <br />diagram. Nor are these areas stippled as aze other small area exemptions. Please clarify this on <br />map 54B. <br />North Soi! Storage Area <br />20(b). The as-built drawings should not be annotated "not to scale." Accurate, as-built scale <br />values should be provided on all as-built drawings. <br />20(c). Please refer to Detail 2 and Detail 3 of Drawing 2 for the NSSA pond. The crest length <br />shown on Drawing 2 is 15 feet. The SEDCAD run uses a value of 20 feet as a crest length. <br />