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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 />November 30, 2015 <br />Ms. Darlene Crosby <br />Tri-State Generation and Transmission Association, Inc. <br />P.O. Box 33695 <br />Denver, CO 80233-0695 <br />Re: New Horizon 2 Mine (Permit No. C-1981-008) <br />Review of September 2015 DMR <br />CDPS Permit #CO -0000213 <br />Dear Ms. Crosby: <br />The Colorado Division of Reclamation, Mining and Safety (Division) received the Discharge Monitoring <br />Reports (DMR) for the New Horizon 2 Mine on October 28, 2015. The report covers the time period from <br />September 1, 2015 to September 31, 2015. <br />The data for seven CDPS outfalls were reported. Five ponds did not have discharge and only Ponds 7 & 13 <br />discharged during this month. No exceedances of the effluent limitations were reported. <br />A Whole Effluent Toxicity (WET) test results report was also submitted. The results demonstrate that there is <br />"no pattern of toxicity" for outfalls 007 and 013. <br />The Division does not have any further comments at this time. <br />If you have any questions or need additional information, please contact me at (303) 866-3567 ext 8142. <br />Sincerely, <br />Aa4_L <br />Brock Bowles <br />Environmental Protection Specialist <br />brock.bowles@state.co.us <br />cc <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. Hickentooper, Governor I Mike King, Executive Director I Virginia Brannon, Director <br />