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w4m,r������������ <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 2, 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 />First 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 first quarter sediment pond inspection reports were received by the Division on 29 March 2013. <br />Sediment pond inspections were conducted by TCC during on the 15th of March 2013. <br />It is noted that no maintenance items were required or conducted, with the exception of reactivation of <br />aerator needed at Waste Water Treatment Pond #2. <br />During the fourth quarter 2012, it was noted that vault flush was needed at Waste Water Treatment Pond <br />#1. Based on the information included in the first quarter 2013 report no maintenance items were <br />needed or conducted at Wate Water Treatment Pond #1. Please confirm that the vault flush needed <br />was conducted during either the first quarter 2013 or the fourth quarter 2012 on the second <br />quarter 2013 report. <br />If you have any questions feel free to contact me. (303) 866 -3567 ext 8134 <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />