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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 />January 23, 2018 <br /> <br />Re: Elk Creek Mine (Permit No. C-1981-022) <br /> Minor Revision No. 108, (MR-108) <br /> Initial Adequacy Review <br /> <br />Dear Mr. Smith, <br /> <br />The Colorado Division of Reclamation, Mining and Safety (Division) has completed the review of <br />materials submitted by Oxbow Mining, LLC (Oxbow) with the MR-108 application. Please <br />address the following questions and comments: <br /> <br />Rule 4.07.3 Permanent Sealing <br />1. The requirements for proof of compliance with the permanent sealing of drill holes are <br />described in rule 4.07.3(3). The page proposed to be added to Exhibit 2.04-E3, summarizing the <br />plugging and abandonment of the CBM holes, does not satisfy all of the requirements of this <br />rule (compare, for example, to the abandonment reports previously submitted by Himes <br />Drilling). <br />(a) Could be satisfied by reference to an existing map <br />(b) – (d) Have not been addressed <br />(f) Details of the cement and plug used should be included <br />(h) Details of the rig should be included <br />(i) A short narrative description of the process should be included for each hole <br />Please submit abandonment reports for each hole, with reference to 4.07.3(3) and previously <br />submitted abandonment reports <br /> <br />The proposed decision due date for MR-108 should be extended. <br />Please feel free to contact me with any questions or comments. <br /> <br />Yours sincerely, <br /> <br /> <br /> <br />Leigh Simmons <br />Environmental Protection Specialist <br />Doug Smith <br />Oxbow Mining, LLC <br />PO Box 535 <br />Somerset, CO 81434 <br />