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J. E. STOVER & ASSOCIATES, INC. <br />2352 NORTH 7TH STREET, UNIT B <br />GRAND JUNCTION, COLORADO 81501 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />October 23 Division of Reclamation, <br />Mining & Safety <br />Zach Trujillo <br />Division of Reclamation, Mining and Safety <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Re: McClane Canyon Mining LLC, McClane Canyon <br />Technical Revision 17, Sediment Control Plan <br />Permit C-1980-004 <br />Dear Mr. Trujillo: <br />41q1rg ,q 6uluiW <br />LL <br />Mine Mining & Satety <br />On behalf of McClane Canyon Mining, LLC, enclosed is an application for a technical <br />revision to provide a sedimentation control plan for outfall 003, the silt fence located <br />below the construction materials stockpile in order to be in compliance with 40 CFR Part <br />434 Subpart H, CDPHE discharge permit C00038342. The silt fence is already in place, <br />and a summary of the design is included on in Appendix M, page M-2. <br />Per the terms of the permit, a site specific Sediment Control Plan must be submitted to <br />DRMS that is <br />"designed to prevent an increase in the average annual sediment yield <br />from pre -mine, undisturbed conditions. The sediment control plan <br />must identify the best management practices (BMPs) and also must <br />describe design specifications, construction specifications, <br />maintenance schedules, criteria for inspection as well as expected <br />performance and longevity of the best management practices. " <br />"Using watershed models, the operator must demonstrate that <br />implementation of the Sediment Control Plan will result in average <br />annual sediment yields that will not be greater than the sediment yield <br />levels from pre -mined, undisturbed conditions. The operator must use <br />the same watershed model that was, or will be used, to acquire the <br />SMCRA permit. " <br />