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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural: Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />COLORADO <br />DIVISION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />May 21, 2010 <br />Bill Ritter, Jr. <br />Governor <br />James B. Martin <br />Mr. Joe Lamanna Executive Director <br />Holclm (US) Ind.. Loretta E. Pineda <br />Director <br />3500 Highway 120, <br />Florence, CO 81226 <br />Re: Portland Limestone Quarry, Permit No. M-1977-344, Technical Revision Approval, Revision No. TR-9 <br />Dear Mr. Larnaniia:. <br />On, May 14, 2010 the Division of Reclamation, Mining and Safety approved the Technical Revision application <br />submitted to the Division on May 7, 2010, addressing the following: <br />Place approximately 20,000 tons of reject inert coal into quarry as backfill <br />The terms of the Technical Revision No. 9 approved by the Division are hereby incorporated into Permit No. M-1977- <br />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 />Berhan Keffelew <br />Environmental Protection Specialist <br />Denver • Grand junction • Durango <br />Office of <br />Active and Inactive Mines