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TRI -STATE GENERATION AND TRANSMISSION ASSOCIATION, INC. <br />HEADQUARTERS: P.O. BOX 33695 DENVER, COLORADO 80233 -0695 303 - 452 -6111 <br />November 14, 2014 <br />Mr. Brock Bowles <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety `s '� �,y'r- Gam, <br />1313 Sherman Street, Room 215 L•� <br />Denver, CO 80203 NOV 192014 <br />RE: New Horizon North Mine Permit No. C- 2010 -089 pry C R�CLA�, {gTIOn <br />Technical Revision No. 8 (TR -08) '',y�n, "1D Sys �r 1 <br />Southeast Haul Road Certification <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 on <br />behalf of the Western Fuels - Colorado, A Limited Liability Company (Western Fuels- Colorado) New <br />Horizon North Mine. Tri -State is the parent company of Western Fuels- Colorado. The New Horizon <br />North Mine operates under Colorado Division of Reclamation, Mining and Safety (CDRMS) Permit No. <br />C- 2010 -089. <br />This technical revision application is being submitted to incorporate the construction certification <br />for the Southeast Haul Road into the permit application package. In addition to this cover letter, the <br />certification includes a certified drawing which shows a plan view, profile and cross sections of the coal <br />haul road. Also, this certification includes a SEDCAD compliance demonstration for the haul road <br />drainage ditch. The compliance demonstration was performed on the cross - section at Station 3 +00 since <br />this section has the smallest cross- sectional area, in order to demonstrate the entire drainage ditch can <br />adequately handle the surface runoff from a 10 year -24 hour storm event as described in Section <br />2.05.3(3). <br />Also included with this package are a revision application, a copy of the public notice for your <br />review, and a change of index sheet to ease incorporation into the permit document. If you have any <br />questions about the enclosed technical revision, please contact Tony Tennyson at (970) 824 -1232 or <br />ttennyson@tristatezt.org. <br />BAW:TT:pvt <br />Enclosure <br />AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER <br />A Touchstone Energy` Cooperative <br />Sincerely, <br />arbara �A�_Walz <br />Senior Vice President <br />Policy and Compliance <br />Chief Compliance Officer <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 PREWITT, NM 87045 NUCLA, CO 81424 -0698 <br />970 - 824 -4411 505- 972 -5200 970- 864.7316 <br />