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MOUNTAIN COAL <br />_?"COMPANYL.L.C. <br />A Subsidiary of Arch Western Resources, LLC <br />May 05, 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 /> <br /> West Elk Mine <br />RECE ED <br />r? 517Box 591 <br />5174 Highway 133 <br /> <br />MAY 2009 Somerset, CO 81434 <br />F <br /> ax (970) 929-5595 <br />Division of ke0amation, <br />Mining and Safety <br />Re: Mountain Coal Company, LLC, West Elk Mine; Permit No. C-80-007; Minor Revision No. MR-354, <br />Geotechnical and Soil Sample Boreholes for East Refuse Pile Expansion Area <br />Dear Mr. Kaldenbach: <br />Mountain Coal Company, LLC (MCC) is submitting the attached information in application of Minor Revision <br />No. 354 to its Mining and Reclamation Permit No. C-80-007. This revision is to complete eight (8) <br />geotechnical and soil sample boreholes (and possibly two additional, optional holes) to obtain data that will be <br />analyzed and utilized in the design of the future East Refuse Pile Expansion (East RPE) area. A piezometer or <br />an inclinometer will be installed in each of the boreholes to provide groundwater and further geotechnical over <br />a period of time. <br />As described in the attached memo and shown on the attached photo/snap, access to the proposed East RPE area <br />boreholes will be by existing roads and trails to the maximum extent possible. Approximately 1,330 feet of <br />new, temporary access may need to be constructed if an all-terrain boring rig is not available for this project. <br />MCC anticipates that this project will be completed within three weeks, including reclamation, and depending <br />on good weather and ground conditions. Attached are the revision form, project description and photo/map. <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 />&kZ01- <br />Kathieen G. Welt, <br />Environmental Engineer III <br />cc: Doug Nolte - MCC <br />Chris Nyikos - MCC <br />Availability of Records File <br />Joanne Williams - Gunnison Co.