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<br /> <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 | Robert W. Randall, Executive Director | Virginia Brannon, Director <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Re: Colowyo Coal Mine (Permit No. C-1981-019) <br /> Technical Revision No. 122 (TR-122) <br /> Adequacy Review <br /> <br />Dear Mr. Tennyson: <br /> <br />After reviewing TR-122 from Colowyo Coal Company L.P. (Colowyo), the Division has the following <br />comments: <br /> <br />1. When reviewing Figure Exh. 7-15-1, the Division calculates a total of 286.1 acres of immediate <br />contributing area. However, the Structure Summary provided with the SedCAD results shows a total <br />of 285.1 immediate contributing area. Please review both the proposed Figure 7-15-1 and associated <br />SedCAD result demonstration to ensure all acreage is accounted for. <br /> <br />2. As discussed between the Division and Colowyo, a reclamation cost estimate (RCE) to reclaim the <br />disturbances associated with TR-122 will be performed once the temporary suspension on conducting <br />RCEs has been lifted. <br /> <br />If you have any questions, feel free to contact me at any time. <br /> <br />Sincerely, <br /> <br /> <br /> <br /> <br />Zach Trujillo <br />Environmental Protection Specialist <br />(303) 866-3567 ext. 8164 <br />Zach.Trujillo@state.co.us <br /> <br /> <br /> <br /> <br />August 7, 2018 <br /> <br />Tony Tennyson <br />Colowyo Coal Company L.P. <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />