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Mountain Coal Company <br />West Elk Mine <br />Post Office Box 591 <br />Somerset, Colorado 61434 <br />Telephone 303 929-501 S <br />Fax 303 929-5595 <br />February 12, 1994 <br />Ms. Christine Johnston <br />Division of Minerals and Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver_ Colorado 80203 <br />~` <br />'l h .. <br />Ft.f-~Vh •. <br />~ ~ 199¢ <br />',: •~-,~ <br />I ~ rl ^";nay;~r <br />a ~:... <br />iii ~iiiiiiiiiiuiii <br />999 <br />Re: Nlouniain Coal Company, tiVes[ Elk Mine, Permit No. C-80-007, Additional <br />Information Regarding the Lower Refuse Pile Density Testing for the 4th Qtr. 1993 <br />Dear Christine: <br />Referring to the 4th Quarter, 1993 Pond/Stockpile Inspection Reports letter of January 20, 1994, <br />Mountain Coal Company is submitting additional information for the subject density testing. The <br />purpose of this letter is to clarify the information sent to the Division. <br />Attached is a schematic showing the approximate location ofthe sampling locations. Comparing <br />the schematic to the relative compaction results, it can be seen that Sample Location Nos. Ol <br />through 04 did not meet the 90% maximum dry density compaction standard. These sample <br />locations were chosen to show the difference between the area compacted with a "sheepsfoot" <br />(Sample Location Nos. 06 through O10) and the refuse pile entrance area which was wheel-rolled <br />(Sample Location Nos. Ol through 04). The wheel-rolled area did not meet the compaction <br />standard, the area will be recompacted with a "sheepsfoot" (which has been shown to meet or <br />exceed the compaction standard) prior to placement of another lift. <br />Ifyou have any questions please notify me. <br />Sincerely, <br />~a~ <br />Henry A. arbe <br />Environmental Coordinator <br />Enclosure <br />xc: K. Welt <br />