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Colowyo Coal Company <br />P 5731 State Highway 13 <br />Meeker, CO 81641 <br />T:970-824-1573 <br />C+ <br />0 April 18, 2011 <br />Ms. Janet Binns <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />10 <br />?J <br />RE: Minor Revision - 107, Topsoil Stockpile Map Update, Colowyo Coal Mine, Permit <br />No. C-1981-019. <br />Dear Janet: <br />Enclosed are two copies each of a Minor Revision which has been prepared to update the <br />three topsoil stockpile maps in the permit. <br />As discussed, this has been prepared as a Minor Revision. Topsoil stockpile locations and <br />topsoil windrow locations were recently updated in the annual report, making the <br />information presented on the current version of Maps 28, 28A, and 28B somewhat out of <br />date. The updated maps provided herein are now consolidated into a single drawing file. <br />Formerly, each map was a separate file. This change will prevent future discrepancies <br />between the maps. Disturbed area and reclaimed area hatching has been updated on all <br />three maps. Map 28B has also been changed to update and eliminate some of the topsoil <br />haulage arrows and delete some of the outdated stripping polygons in the South Taylor <br />area. <br />Also included is a revision application and an index sheet for this change. If you have any <br />questions or require additional information, please feel free to contact me at (970) 824- <br />1573. <br />Sincerely, <br />Chip Brown <br />Environmental Engineer <br />Encl. 2 copies <br />Cc: file CF 1.1.1.95 <br />Colowyo Coal Company • 5731 State Highway 13 • Meeker, CO 81641 <br />T+ 1 970 824 1529 • F+ 1 970 824 1598 • http://prospect.riotinto.org/irj/portal <br />