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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 />October 21, 2016 <br />Mr. Zach Trujillo <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining & Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Colowyo Coal Company L.P. <br />Permit No. C-1981-019 <br />Stipulation 15 Request for Removal <br />Dear Mr. Trujillo, <br />�1�11NNv�3`�11 <br />Tri-State Generation and Transmission Association Inc. (Tri-State), is the parent <br />company to Axial Basin Coal Company, which is the general partner to Colowyo Coal Company <br />L.P. (Colowyo). Therefore, Tri-State on behalf of Colowyo is formally notifying the Division <br />that Tri-State believes Stipulation 15 has been compiled with and should be noted by the <br />Division in their system as "Complied With". <br />Stipulation 15 requires Colowyo to reevaluate sediment control measures for the Collom <br />facilities area, specifically a 9.8 acre area on the corner of the facilities pad, and a 7.2 acre area <br />outside of Deer Draw. This stipulation was added to the permit application package (PAP) <br />during the approval of permit revision 03 (PR -03). <br />Within the submittal, subsequent review and approval of permit revision 04 (PR -04), <br />Colowyo revised the facilities area and the disturbance boundary for the facilities area was <br />relocated within the watershed boundary to ensure all runoff from the disturbed areas would be <br />routed through the primary sediment control system and ultimately Section 25 Pond. With this <br />change, the 9.8 and 7.2 acre areas noted in Stipulation 15 were no longer applicable once the PR - <br />04 approval was issued by the Division on September 13, 2016. <br />For reference, please find Map 41B as approved under PR -03. The two areas that were <br />required to be reevaluated by Stipulation 15 are shown on the enclosed map. The Division has <br />on -file the currently approved Map 41B (approved under PR -04). As can be seen on that map, <br />the disturbance boundary for the facilities is within the watershed boundary and is contained <br />within the Section 25 watershed. As shown on approved Map 41B several small areas adjacent <br />to the facilities area are outside of the watershed boundary, but perimeter sediment control <br />measures were approved for those areas under PR -04. Therefore, all disturbance areas requiring <br />sediment control for the Collom facilities areas has been reviewed and approved by the Division <br />under PR -04. <br />AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER CRAIG STATION ESCALANTE STATION NULLA STATION <br />P.O. BOX 1307 P.O. BOX 577 P.O. BOX 698 <br />A Touchstone Energy'Cooperative CRAIG, CO 81626-1307 PREWITT, NM 87045 NULLA, CO 81424-06% <br />970-824-4411 505472-5700 970-864-7316 <br />