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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 />August 5, 2011 <br />Dennis Jones <br />Sage Creek Coal Company, LLC <br />PO Box 670 <br />Hayden, CO 81639 <br />RE: Peabody Sage Creek Mine, Permit C- 2009 -087 <br />COG-0048275 2 °d Quarter 2011 Discharge Monitoring Report Review <br />Dear Mr. Jones, <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 second quarter 2011 Discharge <br />Monitoring Reports were received by the Division on 28 June 2011; the reports cover the time period <br />from 01 April2011 through 30 June 2011. <br />All outfalls permitted under COG - 0048275 discharged during the second quarter 2011. A total of five <br />exceedances of effluent limits were noted for Outfall 002 and Outfall 004 combined, the 30 -day <br />average selenium standard of 4.6 ug/1 was exceeded at Outfall 002 on April 20 (5 ug/1), May 5 (11 <br />ug/1) and June 16 7 ug/1 and at Outfall 004 on My 16 (8 ug/1) and June 13 (8 ug/1). <br />The record precipitation and runoff that occurred in Routt county is a possible contributor to the <br />increase in selenium. <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 the above referenced exceedances. <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 />Jason • sick <br />Environmental Protection Specialist <br />Office of <br />Mined Land Reclamation <br />STATE OF COLORADO <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />—&— <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pineda <br />Director <br />Office of <br />Denver • Grand Junction • Durango Active and Inactive Mines <br />