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TRI-STATE GENERATION AND TRANSMISSION ASSOCIATION, INC, <br />HEADQUARTERS: RO BOX 33695 DENVER, COLORADO 80233-0695 303-452-611' <br />October 7, 2015 <br />Mr. Brock Bowles <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 �0 <br />Denver, CO 80203 It err* <br />RE: New Horizon Mine <br />Permit No. C-1981-008 <br />Technical Revision No. 69 (TR -69) Rec�acrattp°' <br />Proposed Pond 018 plv�sM � n9 & Salety <br />Dear Mr. Bowles: <br />Tri-State Generation and Transmission Association, Inc. (Tri-State) is submitting the enclosed <br />"Application Form for a Revision to a Coal Mining and Reclamation Permit" for a technical revision <br />application on behalf of the Western Fuels -Colorado, A Limited Liability Company (WFC) New Horizon <br />Mine. Tri-State is the parent company of WFC. The New Horizon Mine operates under the Division of <br />Reclamation, Mining and Safety (DRMS) Permit No. C-1981-008. <br />TR -69 is being submitted to propose a new sediment pond (Pond 018) which will handle surface <br />water runoff from the facilities areas, topsoil stockpiles south of the facilities, and reclamation areas <br />where Mount Nucla material was once temporarily stored. In an earlier site inspection, you noted an <br />issue with the C4 ditch and the trees that have lined the ditch. It was verbally agreed upon that the trees <br />provided a benefit and should remain. TR -69 will propose a new ditch (Ditch C4A) to route disturbed <br />water to Pond 018 that previously flowed to the C-4 ditch. The long term plan for C-4 ditch is it will <br />remain, and will route irrigation water to Calamity Draw once the proper phases of bond release have <br />been achieved in the Pond 007 watershed. Once Phase II release has been achieved and WFC can <br />relinquish sediment control structures in the Pond 007 watershed, the C-4 ditch will be routed directly to <br />Calamity Draw. <br />Also enclosed please find a revision application and a change of index sheet to ease incorporation <br />of these materials into the permit. If you have any questions about the enclosed technical revision, please <br />contact Tony Tennyson at (970) 824-1232 or uenw. son,a'tri tates,),t urs. <br />CSG:TT:pvt <br />Enclosures <br />a,,.._. . i n'+'t,r,e' ¢c, r4p y';,�4. • Vit✓_', <br />a ?� uch,i tx- finer^k (�<«�peraYlc e Iit� <br />Sincerely, <br />(2�, <L) YQ� <br />Chris S. Gilbreath <br />Manager <br />Water Waste and Mining Compliance <br />CRAIG STATION ESCALANTE STATION NUCLA STATION <br />P.O. BOX 1307 P.O. BOX 577 P.O. BOX 698 <br />CRAIG, CO 81626-1307 PREWrrT, NM 87045 NUCLA, CO 81424-0698 <br />970-8244411 505-972-5200 970-864-7316 <br />