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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />March 23, 2015 <br />Bill Bear <br />Bowie Resources, LLC. <br />P.O. Box 1488 <br />Paonia, CO 81428 <br />RE: Bowie No. 2 Mine, Permit No. C- 1996 -083 <br />Technical Revision No. 99 (TR -99) <br />Preliminary Adequacy Review <br />Dear Mr. Bear, <br />The Division received Bowie Resources, LLC's (BRL's) application for a technical revision (TR -99) on <br />February 24, 2015. The application was determined to be complete on March 4, 2015. The Colorado <br />Division of Reclamation, Mining, and Safety has completed its preliminary adequacy review of the <br />proposed technical revision. Please respond to the following comments or concerns as necessary: <br />1. At a minimum, a full year of down - gradient baseline groundwater data is required in order for <br />the Division to be able to make a future finding as to the impacts of mining on groundwater <br />quantity and quality. If BRL intends to mine through 2010 -1 B and -1 SS with less than a year of <br />valid baseline data collected then it will be necessary to drill new wells for baseline data <br />collection, such as 2015 -1 B and -1 SS. <br />2. Please propose either: a plan to install down - gradient groundwater points of compliance and /or <br />monitoring points; or a detailed analysis demonstrating why such points are unnecessary, with <br />reference to the performance standard criteria laid out in rules 4.05.11 and 4.05.13. <br />If you have any questions or comments feel free to contact me. (303) 866 -3567 ext 8134 <br />Sincerely, <br />Jason Musick <br />Environmental Protection Specialist <br />Jason. musick@sate.co. us <br />OF C Qlp <br />I a O <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 * * 1876 * <br />