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AN,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 />April 3, 2015 <br />Tonya Hammond <br />Snowcap Coal Company <br />P.O. Box 1430 <br />Palisade, CO 81526 <br />Re: Roadside Mine (Permit No. C- 1981 -041) <br />Technical Revision 65 (TR -65) <br />Adequacy Review Comments <br />Dear Ms. Hammond: <br />The Division of Reclamation Mining and Safety (Division) has completed its review of Technical Revision 65 <br />(TR -65) for the Snowcap Coal Company's (SCC) Roadside North and South Mines. TR -65 was received by the <br />Division on February 24, 2015 and was deemed complete on March 4, 2015. <br />Snowcap Coal Company (SCC) is proposing to remove a 12" CMP culvert at the outlet of the East Diversion <br />Ditch 92 and replace the culvert with a permanent trapezoidal riprap ditch segment. The Division reviewed the <br />proposed activities to determine if the utilization of the riprap channel segment of the East Diversion Ditch #2 <br />would be adequate to serve as the outlet of the ditch segment. <br />Based on the approved East Diversion Ditch 42 designs located in Appendix 13 -2, beginning on Page NDEC -8, <br />SCC proposed to construct an outlet ditch segment of trapezoidal design with a 3' bottom width, 1.5:1 side <br />slopes lined with MIRAFI 60OX or equivalent fabric and installing 12.00 in D50 riprap. Based on the proposed <br />design, the Division finds that the proposed outlet ditch segment will be sized adequately to control the run -off <br />from the ditch. <br />The Division does not have any questions or comments for TR -65 at the Roadside Mines. <br />If you have any questions or need additional information, please contact me at (303) 866 -3567 ext 8142. <br />Sincerely, <br />AW�A__L <br />Brock Bowles <br />Environmental Protection Specialist <br />brock.bowles@state.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 />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director <br />o Cx]l0 <br />X1$76 x / <br />