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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1373 Sherman St., Room 275 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8706 <br />INTEROFFICE MEMORANDUM <br />TO: Jim Stark <br />FROM: Mike Boulay M~ <br />DATE: October 14, 2003 <br />SUBJECT: Yoast Mine Permit C-94-082, Technical Revision No. 24 <br />COLORADO <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />0.ECLAM ATIO N•M INING <br />SAf ETY•SQENCE <br />Bill Owens <br />Governor <br />Greg E. Walther <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />I am requesting your assistance in reviewing TR-24. This technical revision presents a plan to <br />control runoff and erosion east of the North Pit and includes a proposed sediment pond (Pond O1 1 A) <br />and a proposed plan to re-build the channel between the North Pit and Pond Ol 1. This re-built <br />channel will be designated as postmine channel YPM-12. <br />Please provide a revised liability cost estimate for the Yoast Mine. I have enclosed a complete <br />original copy of the application for your review. I will need you to return these materials to me when <br />you have completed your review. <br />Thank you for your assistance. <br />c: Sandy Brown <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />