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December 19, 2012 <br />Dear Mr. Bowles: <br />J. E. STOVER & ASSOCIATES, INC. <br />Brock Bowles <br />Division of Reclamation Mining and Safety <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />2352 NORTH 7th STREET, UNIT B <br />GRAND JUNCTION, COLORADO 81501 <br />PHONE: (970) 245 -4101, FAX 242 -7908 <br />MINE ENGINEERING CIVIL ENGINEERING <br />MINE RECLAMATION CONST. MANAGEMENT <br />Re: Minrec Inc., North Thompson Creek Mines <br />Technical Revision Application <br />Clarify Pond 9 Operations <br />Permit No. C -1981 -025 <br />Ow\SM n �g & Safe <br />On behalf of Minrec, Inc., enclosed is an application for a technical revision to clarify the <br />way Pond 9 can be used for the water treatment system. Water can be diverted to Pond 9 <br />through the open channel located between treatment pond T -2 and Pond 9. The Operator <br />would like approval to occasionally block the primary spillway on Pond 9. The pond will fill <br />with water and the water will backup into the ditch that enters Pond 9 from the east. Water <br />will exit the ditch where shown on Drawing D -2 -5. This overflow water will irrigate a small <br />area on the site and eventually flow to the refuse pond. <br />The developed water resources area encompasses 4.1 acres. This revision adds an <br />insignificant 0.01 acres to the size of the developed water resources area. <br />Drawings D -2 -5 and D -3 -2 and amended pages 4i through 4ix are enclosed. <br />Please let me know if you have any questions. <br />Sincerely, <br />J. E. S over, P.E. <br />Consulting Engineer <br />