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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832$106 <br />June 4, 2003 <br />Mr. Mike Toelle <br />Holcim (US) Inc, <br />3500 Hwy. 120 <br />OLORADO <br />( V I S I O N O F <br />INERALS <br />EOLOGY <br />:LAM ATION•MINING <br />SAFETY•SCIENCE <br />Bill Owens <br />Governor <br />Greg E. Walther <br />Executive Director <br />Florence, CO 81226 Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />Re: Portland Limestone Quarry, Technical Revision Approval, Permit No. M-1977-344, Revision No. <br />TR-6 <br />Dear Mr. Toelle: <br />On June 2, 2003 the Division of Minerals and Geology approved the Technical Revision application submitted to <br />the Division on September 2, 1999, addressing the following: <br />Cement Kiln Dust Disposal Plan and Ground Water Monitoring Plan. <br />The terms of the Technical Revision No. 6 approved by the Division aze hereby incorporated into Permit No. M- <br />1977-344. All other conditions and requirements of Permit No. M-1977-344 remain in full force and effect. <br />If you have any questions, please contact me. <br />Sincerely, <br />,~Z ~ ~~~ . <br />Larry D. Oehler <br />Environmental Protection Specialist <br />Office of Office of Colorado <br />fAWNed7&mB~~MFR3ti911 M19T/]344 L1XJ 20030606 82025 AM.dac Active and Inactive Mines Geological Survey <br />