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u <br />TRI-STATE GENERATION AND TRANSMISSION ASSOCIATION, INC. <br />HEADQUARTERS: P.O. BOX 33695 DENVER, COLORADO 80233-0695 <br />March 30, 2018 <br />Mr. Brock Bowles <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: New Horizon North Mine (Permit No. C-2010-089) <br />Technical Revision No. 16 (TR -16) <br />Remove Facilities North of Meehan Draw <br />Dear Mr. Bowles: <br />RFEGEIVEQ <br />MICR 8 a 4818 <br />303-452-6111 <br />Division of Reclamation, <br />Mining & Safety <br />Tri-State Generation and Transmission Association (Tri-State) is submitting the enclosed <br />"Application Form for a Revision to a Coal Mining and Reclamation Permit" for a technical <br />revision application on behalf of Elk Ridge Mining and Reclamation's (ERMR) New Horizon <br />North Mine. Tri-State is the parent company of ERMR. The New Horizon North Mine operates <br />under the Division of Reclamation, Mining and Safety (DRMS) Permit No. C-2010-089. <br />TR -16 proposes to remove the facilities north of Meehan Draw including Pond NHN-003 <br />and ditches, approved mining area, the North Haul Road and groundwater monitoring wells GW - <br />47, GW -48 and GW -49. TR -16 also updates the post mining topography to correspond with the <br />revised mining area and removes the Pond NHN-002 North Ditch which has been reclaimed. <br />Also enclosed please find a revision application and a change of index sheet to ease <br />incorporation of these materials in to the permit. If you have any questions about the enclosed <br />technical revision, please contact Tony Tennyson at (970) 824-1232 or ttennyson(,tristatel?t.org. <br />Sincerely, <br />9, j- //' -, - <br />Daniel J. Casiraro <br />Senior Manager <br />Environmental Services <br />DJC:JSS:der <br />Enclosures <br />cc: Frank Ferris (via email) <br />Chris Gilbreath (via email) <br />Jason Storey (via email) <br />Tony Tennyson (via email) <br />File: G474 -11.3(21)c-4 <br />AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION F-UPLOVER CRAIG STATION KCALANTE STATION NUCLA STATWN <br />P.O. Wx 1807 P4. 9W 577 P.O.Box 688 <br />A Touchstone EneWCooperative CRAIG, CO 81626-1807 PREVRIT, NM 87M5 NUCLk CO 81424 -OM <br />�..� 970424.4411 508-97213200 970464.7816 <br />