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COLORADO <br />Division of Reclamation, <br />j&7 Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />December 11, 2018 <br />Jerry Nettleton <br />Twentymile Coal, LLC. <br />29515 Routt County Road 27 <br />Oak Creek, CO 80467 <br />RE: Foidel Creek Mine; C-1982-056; TR84 Adequacy Review No. 3 <br />Dear Mr. Nettleton: <br />The Colorado Division of Reclamation, Mining, and Safety (Division) received the first TR -84 <br />application on 7/22/2016. A number of adequacy issues were identified at that time. The Division sent the <br />first adequacy letter on 8/24/2016 which included 25 items. Additionally a comment letter was received <br />from Colorado Parks and Wildlife (CPW) dated 8/17/2016 and the Division forwarded the comment letter <br />on August 18, 2016 via e-mail. These items were also provided in the second adequacy letter sent <br />8/24/2016. The following list of items include the first two adequacy lists and the status as well as new <br />items. <br />Items from 1St Adequacy Review Letter <br />Table of Contents <br />1. Please update proposed revised page xii to indicate that Exhibit 49EE also contains the designs <br />for the 9 -East Utility Borehole (MR296). Not yet addressed <br />Exhibit 49EE <br />2. The Final Design Drawing Package submitted as Appendix C and Appendix I to proposed Exhibit <br />49EE, contains many designs drawings that are often too small to read. Please submit legible <br />copies of the design drawings for the hard copy of the permit. Addressed with 11/13/2018 <br />submission <br />Figures 4-6 and 4-7 of proposed Exhibit 49EE are difficult to read. Please submit a revised page <br />with legible figures for the hard copy of the permit. Addressed with 11/13/2018 submission <br />Rule 2.05.3 <br />4. Per Rule 2.05.3(4)(a)(ii) and Rule 4.05.6(3)(b), please describe how frequently the sediments <br />collected in the passive water treatment cells will be cleaned out. Please describe where the <br />flF'C-0 <br />H <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us I <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director * r 1876 4 <br />