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M_ OUNTAIN COAL <br />COMPANY L.L.C. <br />A Subsidiary of Amh Western Bfumirxus Group, LLC <br />February 17, 2010 <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 />C /?j5o o0 7 <br />3G3? <br />Aff, Cam(, <br />West Elk Mine <br />P.O. Box 591 <br />5174 Highway 133 <br />Somerset. CO 81434 <br />(970) 929-2200 <br />Fax (970) 929-5050 <br />WcEwW <br />FEB 17 aw <br />Division of kedsmation, <br />Mining and gaiety <br />Re: Mountain Coal Company, LLC, West Elk Mine; Permit No. C-1980-007; Minor <br />Revision No. MR-363, Addition of Piles Under CPP Foundation <br />Dear Mr. Kaldenbach: <br />Mountain Coal Company, LLC (MCC) submits this letter and application form in application of Minor <br />Revision No. 363 (MR-363) to its Mining and Reclamation Permit No. C-1980-007. This revision is <br />to drive 88 steel H-beam piles under the foundation of the Coal Preparation Plant approved per TR- <br />118. These piles are 90' long and will be driven to below grade. Neither the approved design <br />of the mat foundation, the overall design of the CPP building, nor the design of the LRP will be <br />changed with the installation of these piles. They are simply a construction detail to better <br />ensure the success of the approved CPP mat foundation in handling differential settling that <br />may occur on the surface of the LRP. As these piles are below grade and may enhance the <br />stability of the site, they will be left in place when the CPP is removed at final reclamation. The <br />LRP will be finished to final grade per the approved LRP designs, burying the piles with several <br />feet of additional material. <br />Please contact me at (970) 929-2238 or by e-mail should you have questions regarding this <br />submittal. <br />Sincerel , <br />Ka leen G. Welt, <br />Environmental Engineer III <br />cc: Doug Nolte -MCC <br />Availability of Records File <br />Joanne Williams - Gunnison Co.