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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />February 21, 2017 <br />Tony Tennyson <br />Colowyo Coal Company L.P. <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />Re: Colowyo Coal Nfiine (Permit No. C-1981-019) <br />Technical Revision No. 108 (TR -108) <br />Adequacy Review <br />Dear Mr. Tennyson: <br />After reviewing TR -108 from Colowyo Coal Company L.P. (Colowyo), the Division has the following <br />comments: <br />1. As discussed, please provide an updated Map 25D. <br />2. Map l OC — Stream Buffer Zones provides location of the currently approved water line <br />however, it doesn't show the proposed water line for the Collom area. Please update IOC <br />— Stream Buffer Zones to show the proposed water line from the Wilson Reservoir to the <br />Collom area. <br />Proposed Map 22B — Structures and Facilities has been revised regarding facilities and <br />disturbance boundary. When reviewing the proposed Map 22B, all buildings and <br />associated facilities have been removed from the map. It appears to the Division that this <br />may have been an error. Please provide an updated Map 22B — Structures and Facilities <br />with facilities or further explanation on the changes to the facilities if the provided Map <br />22B — Structures and Facilities is correct. <br />4. It appears to the Division that there will be direct access from the Collom Haul Road to <br />Moffat County Road 51. Please provide a description on how Colowyo plans to ensure <br />public safety at the intersection to limit access to the Haul Road to authorized personnel <br />only and to notify public of the potential of mine equipment crossing the County Road <br />51. <br />5. The Proposed Map 25E, Sheet 2 of 4 — Collom Haul Road Drainage Design has multiple <br />unlabeled culverts associated with the proposed haul road and associated access road. <br />Please provide an updated Map 25E, Sheet 2 of 4 with the following culverts labeled: <br />• The second culvert between 170+00 and 180+00; <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining. state. co. us <br />John W. Hickenlooper, Governor I Robert W. Randall, Executive Director I Virginia Brannon, Director <br />