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TP,i—`. : TC— GENERIAXi N A?,iD TRL SA.AI S1�,CDN AS C3(_ A'7*00N' iNC* <br />HEADQUARTERS: PO BO' ;,s6915 DENVER, COLORADO 30?33 0695 303 452-6111 <br />September 2, 2015 <br />Mr. Rob Zuber <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining & Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 RECEIVED <br />Denver, CO 80203 <br />SEP 0 8 2015 <br />RE: Colowyo Coal Company L.P. <br />Permit No. C-1981-019 Division of Reclamation, <br />Mining &Safety <br />Technical Revision No. 106 (TR -106) <br />Collom Access/Haul Road Realignment <br />Dear Mr. Zuber: <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 submitting these adequacy <br />responses for technical revision 106 (TR -106) to Permit No. C-1981-019. Tri-State received <br />your adequacy letter dated August 19, 2015 and has prepared the following responses: <br />1. On page 96 of Rule 2 there is a reference to Rio Tinto road design guidelines. I <br />believe this language needs to be updated. <br />Response: The above noted reference was removed under the submittal package for <br />PR04, which the Division is currently reviewing. To ease the transition between <br />pending permitting actions and subsequent approvals, Colowyo proposes to leave the <br />language in the PAP under TR106, and let the Division review and approve the new <br />language for Haul and Access Roads under PR04, which removes this reference to <br />Rio Tinto road design guidelines. <br />2. The submittal did not include any analysis for sizing of culverts, and Sheets 2 and 3 <br />(Map 25E) do not list the sizes for these structures. This information needs to be <br />added to the Colowyo PAP. <br />Response: This adequacy comment will be addressed in the near term under a <br />separate cover. <br />3. Sheet 3 of Map 25E does not include construction notes. These should be added. If <br />these notes diverge significantly from the current version of this map (PR -03), please <br />explain why. <br />Response: As noted on Map 25E Sheet 3 under notes, the Collom Haul Road will <br />meet all applicable portions of Rule 4.03.1, specifically Rule 4.03.1(3). There are no <br />rules that specify that these applicable rules need to be included on a map in the PAP. <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 NULLA, CO 81 42 4-0698 <br />970-824-4411 505-972-5200 970-864-7316 <br />