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<br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br /> <br /> <br /> <br />October 17, 2014 <br />Chris Gilbreath <br />Tri-State Generation and Transmission Association, Inc. <br />P.O. Box 33695 <br />Denver, CO 80233-0695 <br />Re: Colowyo Mine (Permit No. C-1981-019), TR-104, adequacy letter <br /> <br />Dear Mr. Gilbreath: <br />We received your submittal of TR-104 on September 25, 2014. The following items need to be addressed <br />before the Division can approve this revision. <br />1. Map 22 of the Colowyo Mine Permit Application Package needs to be revised to show the proposed <br />pond. <br />2. Please confirm that Exhibit 7, Item 14 does not require any updates due to the proposed pond. The <br />Division has identified one portion of this section, Table 1, which should be revised. <br />3. It is not clear why the pagination in Exhibit 7-14I has changed dramatically. In your submittal, the first <br />page with text for the East Taylor Ditch is page 11. This appears to be in conflict with the currently <br />approved text for Exhibit 7-14I. Please revise pages or explain this apparent discrepancy. <br />4. Another observation regarding the text of Exhibit 7-14I. Some useful information regarding the <br />hydrology for East Taylor Ditch was omitted, including channel length, slope, and drainage area. The <br />Division recommends that this information be retained in the narrative. <br />If you have any questions, please contact me at 303.866.3567 (extension 8113) or Rob.Zuber@state.co.us. <br />Sincerely, <br />Robert Zuber, P.E. <br />Environmental Protection Specialist <br />1313 Sherman Street, Room 215, Denver, CO 80203P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br /> <br />John W. Hickenlooper, Governor | Mike King, Executive Director <br />