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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 | Mike King, Executive Director | Virginia Brannon, Director <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />RE: Trapper Mining, Inc., Permit C-1981-010 <br /> DRMS Second Adequacy Review of TR 115 <br /> PMT and Mine Plan Updates including selected 2015 Midterm Review Responses <br /> <br /> <br />Dear Mr. Roberts: <br /> <br />The Division has completed its preliminary review of TR 115. The revision was received on March 4, <br />2016. TR 115 responds in part to the Midterm Review conducted by the Division June 2015 (MT7). <br />Additionally the post mining topography is being updated for the K Strike Pit area and 49.7 acres of <br />disturbance are being added. TMI responded to the initial Adequacy issues on June 13th. The original <br />adequacy issues are numbered and discussed below. Remaining adequacy items are in bold. <br /> <br />The proposed revision has several objectives, several of which may require an increase in financial <br />liability at the site. These are an increase in disturbed area by 49.7 acres for additional topsoil stripping in <br />the AE pit and KLM pit areas, the construction of a new building to be used to store blasting vehicles and <br />equipment, the sealing of three monitoring wells, and diversion ditchs. Each of these items is discusses <br />below. <br /> <br />49.7 Acres of New Topsoil Stripping Area <br /> <br />1. The disturbance area shown in TR115 extends beyond the current drainage and sediment control <br />boundary. Please submit updates to the drainage and sediment control plan including any new pond <br />designs needed for the additional disturbance area. <br /> <br />Trapper Response: Future proposed disturbance in TR-115 will be controlled with surface <br />diversions back to the west to the inactive A-Pit and existing sediment control structures. The <br />drainage and sediment control plan, Map 51, has been updated with the locations of two proposed <br />ditches. Ditch designs for the Deacon/Jeffway and Deal diversion ditches are included and should be <br />inserted in Section XVII of Appendix Q. Permit table 4.8-3, pages 4-177, has also been updated with <br />these new ditch designs. Trapper is currently working on permitting the NPDES outfalls with <br />CDPHE and designing ponds for the future disturbance areas beyond these ditches. If the ponds <br />cannot be permitted in a timely fashion the ditches will be constructed as needed in advance of <br />stripping. <br /> <br />July 14, 2016 <br /> <br />Graham Roberts <br />Trapper Mining, Inc <br />P.O. Box 187 <br />Craig, CO 81626 <br /> <br />