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5T1~TE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman $t., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832106 <br />February 28, 2005 <br />John Lohr <br />CEMEX, Inc. <br />P.O. Box 529 <br />Lyons, CO 80540 <br />Re: Lyons Quarry, Technical Revision Approval, Permit No. M-1977-208, Revision No. TR-4 <br />Deaz Mr. Lohr: <br />COLORADO <br />DIVISION OF <br />MIN SRALS <br />GEOLOGY <br />0.ECLAMATION•MINING <br />SAFETY•SCIENCE <br />Bill Owens <br />Governor <br />Russell George <br />Executiv¢ Director <br />Ronald W. Cottony <br />Division Director <br />Natural Resource Trustee <br />On February 28, 2005 the Division of Minerals and Geology approved the Technical Revision applicafion submitted to <br />the Division on November 1, 2004, addressing the following: <br />Revise the sampling, analysi:c and reporting plan for the ground water monitoring and compliance points. <br />The terms of the Technical Revision. No. 4 approved by the Division aze hereby incorporated into Pemrit No. M-1977- <br />208. The condifions of the Division. approval are noted below. Please note that all other provisions of Permit No. M- <br />1977-208 remain in full Force and effect. <br />Stipulation No. Description <br />A water treatment and mitigation plan will be developed and submitted to the Division for the <br />water quality and quantity of water remaining in the C-Pit as a technical revision to the <br />permit on or before November 1, 2005. The plan will be implemented within 30 days of <br />approval of the revision. <br />If you have any questions, please contact me at (303) 866-4943. <br />Sige~e~`re~ly~, `~~ <br />Erica S. Crosby ) <br />Environmental Protection Sp 'al' <br />cc: Carl Mount; DMG <br />Paul Banks; Banks & Gesso, Inc. <br />Office of <br />Mined Land Reclamation <br />Office of <br />ARive and Inactive Mines <br />Colorado <br />Geolo¢ical Survev <br />