2015-11-03_REVISION - C1980004 - Laserfiche WebLink

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MINE ENGINEERING MINE RECLAMATION October 23, 2015 J. E. STOVER & ASSOCIATES, INC. 2352 NORTH 7TH STREET, UNIT B GRAND JUNCTION, COLORADO 81501 PHONE: (970) 245.4101, FAX 242-7908 CIVIL ENGINEERING CONST. MANAGEMENT RECENED Zach Trujillo Division of Reclamation, Mining and Safety NOV U 3 2015 1313 Sherman St., Room 215 Denver, CO 80203 OMSION OF RECLAMATION MINING AND SAFETY Re: McClane Canyon Mining LLC, McClane Canyon Mine Minor Revision 53, Update Identification of Interests Adequacy Response No. 1 Permit C-1980-004 Dear Mr. Trujillo: On behalf of McClane Canyon Mining, LLC, enclosed is an application for a technical revision to provide a sedimentation control plan for outfall 003, the silt fence located below the construction materials stockpile in order to be in compliance with 40 CFR Part 434 Subpart H, CDPHE discharge permit C00038342. The silt fence is already in place, and a summary of the design is included on in Appendix M, page M-2. Per the terms of the permit, a site specific Sediment Control Plan must be submitted to DRMS that is "designed to prevent an increase in the average annual sediment yield from pre -mine, undisturbed conditions. The sediment control plan must identify the best management practices (BMPs) and also must describe design specifications, construction specifications, maintenance schedules, criteria for inspection as well as expected performance and longevity of the best management practices." "Using watershed models, the operator must demonstrate that implementation of the Sediment Control Plan will result in average annual sediment yields that will not be greater than the sediment yield levels from pre -mined, undisturbed conditions. The operator must use the same watershed model that was, or will be used, to acquire the SMCRA permit. "