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TRI-STATE GENERATION AND TRANSMISSION ASSOCIATION, INC. <br />HEADQUARTERS: P.O. BOX 33695 DENVER, COLORADO 80233-0695 <br />November 14, 2018 <br />Mr. Brock Bowles <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: New Horizon Mine (Permit No. C-2010-089) <br />Technical Revision No. 18 (TR -18) <br />Adequacy Review Response <br />Dear Mr. Bowles: <br />303-452-6111 <br />RECEIVED - <br />N. 0 V <br />ECEIVED <br />N.0V 2 0''LJ18 <br />DIVISION OF RECLAMATION, <br />MINING AND SAFETY <br />Tri-State Generation & Transmission Association (Tri-State) has received your adequacy <br />review letter for TR -85, dated November 12, 2018 and provides the following responses to your <br />comments on behalf of the Elk Ridge Mining and Reclamation's New Horizon North Mine. <br />1. Section 2.03, page 10 was submitted with the application, but page 9 was not submitted. <br />The bottom of page 9 of the current permit shows that 12 - Western Fuels -Colorado as a <br />surface owner and the top of submitted page 10 shows 12 - Elk Ridge Mining & <br />Reclamation as a surface owner. Please correct these pages for consistency. <br />Response: Section 2.03 was updated during the RN -01 application, including removal of <br />reference to Western Fuels -Colorado and formatting on page 9. Therefore, page 10 which <br />was submitted with this application is consistent with the most recently approved page 9. <br />2. In Section 3.02.2, page 1 in the Reclamation Cost Estimate Summary it shows that the <br />Current Total Liability is $4,483,021.01. The actual liability is $4,843,021.01. Please <br />correct this typo. <br />Response: Page 1 of Section 3.02.2 has been corrected to show the current total liability <br />as $4,843,021.01. <br />3. In Section 3.02.2, page 1, in the Reclamation Cost Estimate Summary, the total in the <br />Change in Bond Amount column is not correct. The total should be $354,395.50. Please <br />correct this typo. <br />Response: Page 1 of Section 3.02.2 has been corrected to show the total change in bond <br />amount as $354,395.50. <br />4. On the submitted Map 2.04.7-1, Wells 110789 and 100101 were removed from the <br />northern section of the map. These wells are an estimated distance of 4, 500' from the <br />disturbed area according to the current version of Map 2.04.7-1. Rule 2.04.7(4)(a) states <br />that all wells within a one mile radius of the affected area need to be shown on the map. <br />Please include these wells on Map 2.04.7-1 to satisfy Rule 2.04.7(4)(a). <br />Response: Map 2.04.7-1 has been revised to include wells 110789 and 100101. The map <br />scale has also been changed back to 1" = 400" to accommodate the additional area. <br />AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER CRAIG STATION ESCALANTE STATION NUCLA STATION <br />P.O. BOX 1307 P.O. BOX S77 P.O. BOX 698 <br />A Touchstone Energy* Cooperative CRAIG. CO 81626-1307 PREWITT, NM 87045 NULLA, CO 81424-0698 <br />r ` 970-824-4411 505.876.2271 970-864-7316 <br />