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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 />COLORADO <br />D I V I S ION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />January 18, 2011 John W. Hickenlooper <br />Governor <br />Jerry Nettleton Mike King <br />Twentymile Coal Company Executive Director <br />29515 Routt County Road No. 27 Loretta E. Pineda <br />Oak Creek, CO 80467 Director <br />RE: Foidel Creep Mine, Permit C-82-056 <br />Fourth Quarter 2010 Coal Waste Pile Inspection Report <br />Dear Mr. Nettleton, <br />The Colorado Division of Reclamation, Mining, and Safety (CDRMS) have found the above <br />referenced 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 October 29, 2010, December 23, 2010 and on <br />December 28, 2010. Based on the report, NWCC noted shallow erosion channels on the lower bench <br />on the east side of the refuse pile that should be addressed in order to curb further erosion. No signs of <br />instability, structural weakness or hazardous conditions at the refuse pile. According to the report, the <br />wash plants produced approximately 178,946 tons of waste coal. On October 29, 2010 a total of five <br />compaction tests were conducted and on December 23, 2010 a total of two compaction tests were <br />taken at the west end of the new Expansion Area. All tests met the minimum compaction requirement <br />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. <br />Construction of the new haul road to the south of the existing pond had also begun. <br />Please note that the erosion identified in the first, second, and third quarter reports have yet to <br />be repaired. It is NWCC's recommendation that these small gullies be repaired to prevent <br />further down cutting and erosion of the pile. <br />If you have any questions feel free to contact me. (303) 866-3567 ext 8134 <br />Sincerely, <br />c <br />C-- Jason Mus <br />Environmental Protection Specialist <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines