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<br />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 />August 20, 2008 <br />Mark Vanarelli <br />Water Resources Engineer <br />Office of the State Engineer <br />Division of Water Resources <br />1313 Sherman Street, Room 818 <br />Denver, CO 80203 <br />Re: Foidel Creek Mine (CDRMS permit no. C 1982-056) <br />TR61, Additional information regarding 6MN Water Storage Reservoir <br />Dear Mr. Vanarelli: <br />The Division has received additional information regarding permitting of a water storage reservoir at the <br />Foidel Creek Mine by Twentymile Coal Company (TCC). The application for this reservoir was initially <br />found complete by the Division of Reclamation, Mining and Safety on August 2, 2007. Notification was <br />provided to your office at that time requesting the Office of the State Engineers (SEO) comments <br />regarding the proposed reservoir. The Division received your reply on August 10, 2007. At that time you <br />indicated that the operator (TCC) needed to obtain a substitute water supply plan through your office, or a <br />water court approved augmentation plan. <br />It is the Divisions understanding that TCC has been in communication with SEO regarding designs and <br />approvals for this 6MN Mine Water Storage Reservoir. TCC is providing revisions to the design to lower <br />the elevation of the emergency spillway discharge. TCC believes that this reduction in emergency <br />spillway elevation would classify the impoundment as a non jurisdictional impoundment. The maximum <br />design mine water storage volume would be reduced accordingly. The embankment height and <br />dimensions, except for the emergency spillway, would remain generally unchanged. <br />I am providing a copy of TCC's August 18, 2008 letter and revised pages and designs for the 6MN Mine <br />Water Storage Reservoir. Please provide your comments to the Division as soon as possible. The <br />operator is anticipating commencement of construction of the reservoir as soon as approvals have been <br />received. Please call me if you have questions or if you would like any additional background, maps or <br />design plans regarding this revision. <br />ScP???o <br />COLORADO <br />D I V I S I ON OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />you for your assistance, <br />Protection Specialist II <br />janet.binns@state.co.us <br />Office of <br />Mined Land Reclamation <br />Denver • Grand Junction • Durango <br />Office of <br />Active and Inactive Mines