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ATTACHMENT 1 <br />STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department pf Natural Re<nureas <br />1313 Sherman St.. Room 215 C O L O R A D O <br />Denver. Colorado 80203 131v t s t O rr of <br />Ph- (303) 666.3567 RECLAMATION <br />FAX: (303) 832-8106 MINING <br /> <br /> SAFE"1-Y <br />December 18, 2007 <br /> Bill Rine,. Jr. <br /> ca-mor <br />Ms. Amy T hurikill Vlanis D. Shc man <br />Manager of Environmental, Health, and Safety Executive Dimwr <br />Cotter Corporation Rrmald w. (atnmy <br />7800 F. Dorado Place, Suite 210 oi.i>ion Dirmta <br />Wtural ftcsriunv fro>ace <br />Englewood, CO 80111 <br />Re: Cotter Corporation - Schwartzwalder Mine. Jefferson County - Technical Revision Approval. Revision <br />No. TR-09; Permit No. M-1977-300 <br />Dear Ms. Thurlkill: <br />On December 14, 2007, the Division of Reclamation, Mining, & Safety (Division) approved the Technical Revision <br />application tiled with the Division on December 7, 2007 that addresses the following: <br />Hydrologic Sealing of Sieve Level Adds <br />The terms of the Technical Revision No. 9 approved by the Division are hereby incorporated into Permit No. M-1977- <br />300. All other conditions and requirements of PermitNo. M-1977-300 remain in full force and effect. <br />Because hydrologic seals are already included in the approved Reclamation Plan on file, and the seals in TR09 represent <br />an optional upgrade that are a contingency in the event that the mine pool rises to a level that the hydrologic study <br />indicates is unlikely, DR MS has decided that no additional Financial Warranty is necessary at this time. However, <br />DRMS retains the option to impose additional Financial Warranty on the TR09 seals in the event that installation of the <br />seals is not completed within a reasonable time period. <br />The approval of TR 09 is contingent upon the receipt of one additional item. In accordance with Rule 1.8.1(2), the <br />Operator must provide the Division with an affidavit or receipt demonstrating that the amendment or technical revision <br />was placed with the County Clerk and Recorder. To date the Division has not received this. <br />If you have any questions, you may call me at (303) 866-3567. <br />Sincerely, <br />aay, <br />David A. Bird <br />Environmentnl Protection Specialist, Senior Geochemist <br />Office of <br />Mimd Laud Rtclalnation <br />Denver . Crandjunction . Durango <br />Office of <br />Attive erul Inactive Minos <br />#1478373 v3 den