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TRI -STATE GENERATION AND TRANSMISSION ASSOCIATION, INC. <br />HEADQUARTERS: P(t g; -)` ?36c-�5, DEH, /ER. COL{�i'AI -10 80233 0695 300'- 4;)2-6 111 <br />December 9, 2014 <br />Mr. Rob Zuber <br />Environmental Protection Specialist RECEIVED <br />Colorado Division of Reclamation, Mining & Safety <br />Department of Natural Resources DEC 1 2 2O 14 <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 Division of Reclamation, <br />Mining & Safety <br />RE: Colowyo Coal Company L.P., Permit No. C- 1981 -019, Technical Revision No. 104 <br />(TR -104), East Taylor Ditch Modification, Technical Adequacy Response <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 this adequacy response <br />for TR -104 to Permit No. C- 1981 -019. Tri -State received your adequacy comments, dated <br />October 17, 2014, and the following responses have been provided to your concerns: <br />1. Map 22 of the Colowyo Mine Permit Application Package needs to be revised to show the <br />proposed pond. No further action required. <br />Response: No response required. <br />2. Please confirm that Exhibit 7, Item 14 does not require any updates due to the proposed <br />pond. The Division has identified one portion of this section, Table 1, which should be <br />revised. In Table I the stationing for the East Taylor Ditch with ETD Pond I should account <br />for the length of the pond. <br />Response: Exhibit 7, Item 14, Table 1 has been revised to reflect the condition of the East <br />Taylor Ditch with ETD Pond 1. The Division requested that the stationing on this table should <br />reflect length of the proposed pond. To provide the proposed length at this time is not <br />appropriate as the as -built condition will not match the stationing provided. Therefore, a note <br />has been included into this table to define the approximate location of the ETD Pond 1, and let it <br />be noted that the as -built submittal for this structure, once constructed, will provide the details <br />requested. <br />3. It is not clear why the pagination in Exhibit 7 -141 has changed dramatically. In your <br />submittal, the first page with text for the East Taylor Ditch is page H. This appears to be in <br />conflict with the currently approved text for Exhibit 7 -141 Please revise pages or explain <br />this apparent discrepancy. The source of this issue is the redundancy within Appendix Exh7- <br />14. Please edit this appendix so that it only includes an analysis of the East Taylor Ditch with <br />CRAIG STATION ESCALANTE STATION NUCLA STATION <br />P.O. BOX 1307 P.O. BOX 577 P.Q. BOX 698 <br />CRAIG, CO 81626 -1307 PREWITT, NM 87045 NUCtA, CO 81424 -0698 <br />970 -824 -4411 505 - 972 -5200 970 -864 -7316 <br />