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STATE OF COLORADO <br /> <br /> <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br /> <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br /> <br /> <br />July 18, 2013 John W. Hickenlooper <br /> <br />Governor <br /> <br /> <br /> <br />Mike King <br /> <br />Executive Director <br /> Brian A. Watterson <br /> <br /> <br />Twentymile Coal Company Loretta E. Pineda <br /> <br />Director <br />29515 Routt County Road #27 <br /> <br />Oak Creek, CO 84067 <br /> <br /> <br /> <br /> <br /> <br />RE: Twentymile Coal Company, Permit C-82-056 <br />May 2013 Discharge Monitoring Report (CO-0027154) <br /> <br /> <br />Dear Mr. Watterson: <br /> <br />The Colorado Division of Reclamation, Mining, and Safety (CDRMS) has reviewed and found the <br />above referenced report to be in compliance with Rule 4.05.13(2). The May 2013 Discharge Monitoring <br />Report for the above referenced CDPS Permit were received by the Division on 03 July 2013; the <br />reports cover the time period from 01 May 2013 through 30 May 2013. <br /> <br />During the month of May 2013 outfalls 002A(Pond T), 003A(Pond B), 005A, 005W, MON5 (Pond D), <br />006A (Pond E), 007W, MON7 (Pond F), and 008A(Pond G) flowed. Outfall 004A(Pond C) did not <br />flow during the month. <br /> <br />During the month two exceednaces for total suspended solids (TSS) were noted at Outfall 003A for 7- <br />day maximum and 30-day average. The TSS values for each week of the month were 13, 118, 65, and <br />37 mg/L. <br /> <br />It is noted that based on a Memorandum of Understanding between the Division of Reclamation, Mining <br />and Safety and the Water Quality Control Division (WQCD), the WQCD will be responsible for <br />enforcing CDPS permit conditions including exceedances of TSS. <br /> <br />If you have any questions feel free to contact me. (303) 866-3567 ext 8134 <br /> <br />Sincerely, <br /> <br />Jason Musick <br />Environmental Protection Specialist <br /> <br />Office of Office of <br /> <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />