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COLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resourccs <br /> January 24,2020 <br /> Tony Tennyson <br /> Colowyo Coal Company L.P. <br /> 5731 State Highway 13 <br /> Meeker, CO 81641 <br /> Re: Colowyo Coal Mine(Permit No. C-1981-019) <br /> Minor No.213 (MR-213) <br /> Adequacy Review <br /> Dear Mr.Tennyson: <br /> After reviewing MR-213 from Colowyo Coal Company L.P.(Colowyo),the Division has the following <br /> comments: <br /> 1. The Division has performed a reclamation cost estimate to reclaim the Collom dewatering and <br /> monitoring wells. The total value of this estimate is$63,983.00(see attached cost estimate).Total <br /> depth for the Dewatering Wells I through 10 were taken from Table 6 of Volume 18,Exhibit 7,Item <br /> 2213.Depth for the five piezometer wells were calculated using the average depth found from Table <br /> 6 of Volume 18,Exhibit 7,Item 22B for five total wells.The Division's cost estimate is consistent <br /> with previous cost estimates approved by both the Division and Colowyo.The Division respectfully <br /> requests a response from Colowyo with any questions regarding the cost estimate or an acceptance of <br /> the Division's estimate. <br /> If you have any questions,feel free to contact me. <br /> Sincerely, <br /> Zach Trujillo <br /> Environmental Protection Specialist <br /> (303) 866-3567 ext. 8164 <br /> Zach.Trujillogstate.co.us <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us * *' <br /> Jared S. Polis, Governor Dan Gibbs, Executive Director Virginia Brannon, Director <br />