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~ ; i~ <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 275 <br />Denver, Colorado 80203 <br />DIVISION o e <br />Phone: (303) 866-3567 MINERAL $ <br />FAX: (303) 832-8106 Sc <br /> GEOLOGY <br /> <br />Septembe12O, 2002 RECLAMATION <br />MINING•SAFETY <br />Mr. Richard Cargill co °~o"~ <br />St. Vrain Valley Community Watchdogs cregE.waicner <br />P.O. BOX 82 Executive Director <br />CO 80533 <br />H iene <br />Yg Ronald W. Cattany <br />, Acting Division Director <br />RE: CEMEX, Inc., Lyons Mine, Permit No. M-1977-208 <br />Concerns regazding dust associated with CKD <br />Deaz Mr. Cazgill, <br />The Division of Minerals & Geology (Division or DMG) received your letter on September 13, <br />2002 regazding fugitive emissions as a result of the cement kiln dust (CKD) at the CEMEX <br />Lyons Mine, Permit No. M-1977-208. The Division conducted an inspection of the site on <br />September 5, 2002, in response to your citizen complaint letter received by our office on August <br />12, 2002. In that inspection report the Division noted that CEMEX was capping and watering <br />the CKD as required in the approved mining and reclamation plan. <br />Your letter requests that the DMG apply tailored RCRA Subtitle C standazds to improperly <br />managed CKD at this facility as specified in the 1999 EPA standazds for the Management of <br />Cement Kiln Dust. Please be aware that the Division does not have the authority to regulate <br />fugitive emissions under the Colorado Land Reclamation Act for the Extraction of Construction <br />Materials or the Construction Material Rules and Regulations. Such activity is generally <br />regulated by the County Health Department and the Colorado Department of Public Health and <br />the Environment; Air Pollution Control Division. The DMG ensures the proper disposal of <br />CKD in terms of groundwater protection, closure for final reclamation and what needs to be <br />incorporated into the reclamation cost estimate. <br />If you have any questions, please do not hesitate to contact me at 303-866-3567. <br />Sincerely, <br />i _, ~ <br />ruce Hum t s ~~ ~~ <br />Minerals Program Supervisor <br />Enclosure (copy of letter from St. Vrain Valley Community Watchdogs to DMG) <br />(all cc: to receive Enclosure) <br />cc: Ms. Jane Norton; CDPHE <br />Ms. Mazgie Perkins; CDPHE, Air Pollution Control Division <br />