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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 C O L O R A D O <br />DIVISION o F <br />Phone: (303) 866-3567 RECLAMATION <br />FAX: (303) 832-8106 MINING <br /> <br />June 30, 2010 SAFETY <br /> <br />Brian A. Watterson Bill Ritter, Jr. <br />Governor <br />Twentymile Coal Company <br /> Mike King <br />29515 Routt County Road #27 Executive Director <br />Oak Creek, CO 80467 Loretta E. Pineda <br /> Director <br />RE: Twentymile Coal Company, Permit C-82-056 <br />April 2010 Discharge Monitoring Report Review (Permit CO-0027154) <br />April 2010 Discharge Monitoring Report Review (Permit COG-073311) <br />Dear Mr. Watterson, <br />The Colorado Division of Reclamation, Mining, and Safety (CDRMS) has reviewed and found the <br />above referenced reports to be in compliance with Rule 4.05.13(2). The May 2010 Discharge <br />Monitoring Reports for the above referenced CDPS Permits were received by the Division on 29 June <br />2010; the reports cover the time period from 01 May 2010 through 31 May 2010. <br />Permit CO-0027154 - Outfalls 005A/MON5/005W (Pond D), 003A (Pond B), 002A (Pond T), <br />007A/MON7/007W (Pond F), 008A (Pond G) and 006A (Pond E) discharged during May 2010. No <br />exceedances of any compliance criteria were noted during the month. Outfall 004A did not discharge <br />during the month noted. <br />Permit COG-073311 - Outfall 001A (Fish Creek Construction Crossing) discharged during the month <br />of May 2010. Two exceedances were noted relating to TSS, 30-day average and maximum. <br />It is noted that based on a Memorandum of Understanding between the Division of Reclamation, <br />Mining and Safety and the Water Quality Control Division (WQCD), the WQCD will be responsible <br />for enforcing CDPS permit conditions including exceedances of TSS. <br />Thank you for the timely submittal. <br />If you have any questions feel free to contact me. (303) 866-3567 ext 8134 <br />Sincerely, <br />6 Jason Musick <br />Environmental Protection Specialist <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines