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~~ MOUNTAIN COAL <br />COMPANY~.~.~. <br />A Subsidiary of Arch Western Resoiuces, I,I,C <br />June 6, 2007 <br />RECEIVED <br />JUN 11 2007 <br />Division o1 reclamation, <br />Mining and Safety <br />West Elk Mine <br />POBOx 591 <br />5174 Highway 133 <br />Somerset, CO 81434 <br />(970) 929-50] 5 <br />Fax (970) 929-5595 <br />Mr. Tom Kaldenbach <br />Colorado Division of Reclamation, Mining and Safety (CDRMS) <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: Mountain Coal Company LLC (MCC), West Elk Mine, Permit No. C-80-007; Minor Revision No. <br />343 (MR-343), Methane Drainage Well No. 25-11.5, Sylvester Gulch (Private Property). <br />Dear Mr. Kaldenbach, <br />MCC is submitting this Minor Revision for one methane drainage well in Sylvester Gulch for Pane125 B Seam. <br />The well will be constructed on private property on previously disturbed ground. Access to the site will be by <br />an existing light-use road constructed in 1997. Because the depth of the well is relatively shallow (400 feet) <br />and the direction is oriented vertically, a small mudpit will need to be constructed. The mudpit designs, would <br />most likely be fora 0.5 acre pad as previously submitted in Technical Revision No. 101, (TR-101). <br />MCC is submitting to the Division a corrected Map 53B and a typica125 Panel MDW Well Design in order for <br />the CDRMS to approve Minor Revision No. 343. The previously submitted Plugging and Abandonment Figure <br />did not change. <br />If you have questions regarding these adequacy responses for the minor revision please call me at (970) 929- <br />2238. <br />L6~~~ /J <br />envy B e x~.~ <br />Environmental Engineer <br />cc: P. Wyckoff <br />D. Nolte <br />M. Peacock <br />ni/2 - 3 43 , u~P'et~l 6/~ g/o~ <br />