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STATE OF COLORADO <br />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 />April 16, 2013 <br />Jerry Nettleton <br />Twentymile Coal Company <br />29515 Routt County Road 927 <br />Oak Creek, CO 84067 <br />RE: Twentymile Coal Company, Permit C -82 -056 <br />First Quarter 2013 Coal Waste Pile Inspection Report Review <br />Dear Mr. Nettleton: <br />COLORADO <br />ID IV I S I O N O F <br />RECLAMATION <br />MINING <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pineda <br />Director <br />The Colorado Division of Reclamation, Mining, and Safety ( CDRMS) have found the above referenced <br />report to be in compliance with CDRMS Regulations: 4.09.1(11) and 4.10.2(2). <br />The above referenced report was prepared by North West Colorado Consultants (NWCC) for <br />Twentymile Coal Company. NWCC visited the site on February 5 and March 29, 2013. Based on the <br />report, NWCC did not observe any signs of instability, structural weakness or hazardous conditions at <br />the pile. These observations reflect observations with on -site inspections conducted by the Division of <br />the Waste Pile. The report states that the wash plants produced approximately 337,555 tons of waste <br />coal. On February 5th a total of four compaction tests were conducted at the Expansion Area. All tests <br />met the minimum compaction requirement of 90% of the maximum standard Procter density. <br />As of the date of the report, no new stripping of topsoil and cover materials was conducted and no new <br />haul road construction had taken place. <br />If you have any questions feel free to contact me. (303) 866 -3567 ext 8134 <br />Sincerely, <br />R <br />Jason Musick <br />Environmental Protection Specialist <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />