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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />July 31, 2014 <br />Scott Cowman <br />Peabody Sage Creek Mining, LLC. <br />P.O. Box 250 <br />36600 Routt County Road 27 <br />Hayden, CO 81639 <br />RE: Peabody Sage Creek Mining, Permit C- 2009 -087 <br />Second Quarter 2014 Discharge Monitoring Report (CO- 0048275) <br />Dear Mr. Cowman: <br />The Colorado Division of Reclamation, Mining, and Safety (CDRMS) has reviewed and found the above <br />referenced report to be in compliance with Rule 4.05.13(2). The Second Quarter 2014 Discharge <br />Monitoring Report for the above referenced CDPS Permit were received by the Division on 29 July 2014; <br />the report cover the time period from 01 April 2014 through 30 June 2014. <br />All outfalls permitted under CO- 0048275 discharged during the second quarter 2013. Two exceedances <br />were noted at outfall 004. <br />The report notes that the sample collected at Outfall 004 on April 21St and May 7th during the quarter <br />showed a potential dissolved selenium value of 9.1 ug /l. The potentially dissolved selenium value <br />standard under CO- 0048275 is 4.6 ug /l. <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 enforcing <br />CDPS permit conditions including the above referenced exceedance. <br />Whole Effluent Toxicity tests were collected for analysis during the second quarter. The tests indicated <br />that the effluent was not acutely toxic to Pimephales promelas or Ceriodaphnia dubia. <br />In addition, a copy of email correspondance and ACZ Laboratories results were submitted with the DMR. <br />If you have any questions feel free to contact me. (303) 866 -3567 ext 8134 <br />Sincerely, <br />-'coda <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http: / /mining.state.co.us '" <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director I <br />x`1876* <br />