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MOUNTAIN COAL <br />COMPANYL.LC. <br />A Subsidiary of Arch Western Resources, LL.C <br />April 30, 2009 <br />Mr. Tom Kaldenbach <br />Colorado Division of Reclamation, Mining and Safety <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />ED(vro; A4464) <br />MAY 01 2009 West Elk Mine <br />P-?, <br />u1ViS1Ur7v.:. a, uti,uuvt P.O. Box 591 <br />., 5174 Highway 133 <br />Mining and Safety Somerset, CO 81434 <br />(970) 929-5015 <br />Fax (970) 929.5595 <br />Re: Mountain Coal Company, LLC, West Elk Mine; Permit No. C-80-007; Minor Revision No. MR-353, <br />Addition of Mine Fan, Mine Air Heater and Mine Nitrogen Supply <br />Dear Mr. Kaldenbach: <br />Mountain Coal Company, LLC (MCC) is submitting the attached information in application of Minor Revision <br />No. 353 to its Mining and Reclamation Permit No. C-80-007. This revision removes the existing mine air <br />heater building at Shaft 41 and adds a new mine ventilation fan, new mine air heater buildings, fan motor <br />building, fan lubrication unit building, fan motor control center building, a transformer pad, and a mine nitrogen <br />supply building and associated piping to the existing Sylvester Gulch Shaft #I and Shaft #2 facilities. These <br />new structures will be located entirely on the existing Sylvester Gulch Ventilation Shafts bench with no <br />changes needed to surface drainage plans nor new construction on previously undisturbed ground. <br />Attached are the revision form, general project description and drawing, revised permit pages 2.05-1; and 21, <br />and revised Map 53B. A table of proposed building dimensions, concrete volumes and pipeline lengths is also <br />included in the general -project description. The as-built data will be updated and incorporated into Exhibit 68, <br />"Major Buildings and Structures As-Built Summary" upon completion of the project. <br />MCC would appreciate the Division's assistance in providing reclamation estimates and associated bond <br />readjustment calculations for this project. Please contact me at (970)929-2238 or by e-mail should you have <br />questions regarding this submittal. <br />Sincerely,, <br />Kathleen G. Welt, <br />Environmental Engineer III <br />cc: Doug Nolte - MCC <br />Chris Nyikos - MCC <br />Availability of Records Pile <br />Joanne Williams - Gunnison Co. <br />Submittal MR.' 353 041509.dtx