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DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 <br />FAX: (303) 832 -8106 <br />July 11, 2011 <br />Mr. Donald MacDonald <br />Coors Energy Company <br />P.O. Box 467 <br />Golden, CO 80402 <br />RE: Keenesburg Mine, Permit C- 1981 -028 <br />2010 Annual Reclamation Report, received February 28, 2011 <br />Dear Mr. MacDonald: <br />The Colorado Division of Reclamation, Mining, and Safety (Division) has reviewed the above referenced <br />report. The results of the review are summarized in the attached memorandum. <br />The Division has two concerns with the 2010 ARR: <br />1. The bond release acreage values are not reported correctly. <br />2. Cheatgrass is a noxious weed and should not be counted in the percent cover value. <br />Please see details in the memorandum and provide responses to these concerns to assure compliance with Rule <br />2.04.13. If you have any questions feel free to contact me at (303) 866 -3567, extension 8113. <br />Sincerely, <br />Enclosure (1) <br />1> <br />Robert Zuber, P.E. <br />Environmental Protection Specialist <br />Office of <br />Mined Land Reclamation <br />STATE OF COLOFADO <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />—&— <br />SAF ETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pii eda <br />Director <br />Office of <br />Denver • Grand Junction • Durango Active and Inactive Mines <br />