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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 />October 16, 2013 <br />Brian A. Watterson <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, CO 84067 <br />RE: Twentymile Coal Company, Permit C -82 -056 <br />Third Quarter 2013 Sediment Pond Inspection Report Review <br />Dear Mr. Watterson: <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) has reviewed and found the <br />above referenced report to be in compliance with the following CDRMS regulation: <br />4.05.9(17) — Examined at least quarterly by a qualified person designated by the operator, for <br />appearance of structural weakness and other hazardous conditions. <br />4.05.9(17) — A copy of the report shall be submitted to the Division on a quarterly basis. <br />The third quarter sediment pond inspection reports were received by the Division on 10 October 2013. <br />Sediment pond inspections were conducted by TC during the last week of September 2013. <br />It is noted that no maintenance items were required or conducted, with the exception of dredging the <br />south cell of Pond B, the delta on the west end of Pond D, the delta on the south side of Pond E, and the <br />removal of wood debris near the flume of the Area #1 Pit; maintenance items needed include: clearing <br />of vegetation at the outlet of the flume of Pond and drainage improvements along the drainage leading <br />to the 6 MN Construction Holding Pond. These items reflect maintenance issues noted in the Division's <br />inspection reports. <br />If you have any questions feel free to contact me. (303) 866 -3567 ext 8134 <br />Sincerely, <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 />