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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 />December 18, 2017 <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-1981-008) <br />Technical Revision No. 83 (TR -83) <br />Adequacy Review Response <br />Dear Mr. Bowles: <br />OeAO <br />4�oT 0 �oN <br />d�,C MPS <br />`ON�F Nose <br />Tri-State Generation & Transmission Association (Tri-State) has received your adequacy <br />review letter for TR -83, dated November 6, 2017 and provides the following responses to your <br />comments on behalf of the Elk Ridge Mining and Reclamation's New Horizon Mine. <br />1. GW46 Irrevocable trust would prefer Elk Ridge Mining & Reclamation, LLC construct the <br />"Access Entrance " to and from County Road BB in the location we (Brock Bowles, Thomas <br />Fry ofERM&R and Jim Guire II of GW46) discussed in person at the site on 10-25-2017. <br />Response: Figure 2.05.3(3)-37 has been updated to show the revised access entrance from <br />BB County Road BB to GW46 Trust Property in the location discussed on site on 10-25-17. <br />2. Our question we have as to the location of the fence. "Fencing will be installed around the <br />boundary of the alternate sediment control area ". Does this mean the fence will be <br />constructed along the true south boundary of the 25' grass filter area or is the mine going to <br />square off the fence line for easier management?. <br />Response: Figure 2.05.3(3)-37 has been updated to show a grass filter that is squared off for <br />easier management of the irrigated pasture area, while maintaining a 25 ft. minimum width. <br />3. Is the 2.8 acres identified in red as SWS 2 "Adjacent Undisturbed SWS" on Figure 2.05.3(3)- <br />37 to be managed along with the SWS I "Alternate Sediment Control SWS" and the "Grass <br />Filter" areas since the area is within the permit boundary and is upland to the Grass Filter <br />area? Or is to be segregated and managed by the landowner independently? <br />Response: As shown on Figure 2.05.(3)-37, the adjacent undisturbed SWS area is within the <br />permit boundary. However, this area is currently undisturbed and ERM&R has no plans for <br />disturbance. Therefore, ERM&R will continue to manage the previously disturbed and <br />reclaimed areas as before, without any additional disturbance to the undisturbed area. <br />4. We think that a culvert installed in the West branch of San Miguel Draw would be beneficial <br />and agree to its installation in the location we all discussed in person as well. <br />Response: Figure 2.05.(3)-37 has been updated to show a culvert in the west branch of San <br />Miguel Draw. Also, Attachment 2.05.3(3)-1 and Map 2.05.3(3)-1 have been updated to <br />reflect the addition of this culvert (C138). <br />AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER CRAIG STATION ESCALANTE STATION NUCLA STATION <br />P.O. BOX 1307 P.O. BOX 577 P.O. BOX 698 <br />A Touchstone EnerWCooperative 0� <br />CRAIG, CO 61626.1307 PREWITT, NM 87045 NUCLA, CO 81424-0698 <br />�„-,� 970-824-4411 505-876-2271 970.864.7316 <br />