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DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />Bill Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />RECEIVED Executive Director <br />Dick Wolfe, P.E. <br />September 9, 2008 Director <br />SEP U 9 2008 <br />James R. Stark <br />Environmental Protection Specialist <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Division ofa d Safety n. <br />Mining <br />Re: Colowyo Coal Mine (Permit No. C-1981-019) <br />Technical Revision Application No. 75 (TR-75) <br />TR-75 Updates the Permit to Reflect the Redesign of the Section 28 Collection <br />Ditch an Corrects the Length <br />Information on the Section 29 Collection Ditch <br />Dear Mr. Stark: <br />The Division of Water Resources has reviewed the Colowyo Coal Mine (Permit No. C- <br />1981-019), Technical Revision Application No. 75 (TR-75). The revision proposes to <br />change the designs of the Section 28 and Section 29 Collection Ditches. These ditches <br />are in the South Taylor area of the mine and were originally permitted with the approval <br />of Permit Revision 02. The redesign of these ditches will not change the watersheds in <br />the South Taylor mining area. Currently, the SEO has no objection to the revision. <br />If you have any questions, feel free to contact me at this office at (303) 866-3587. <br />Sincerely, <br />Mark J. Vana Ili, PhD, PE, PG, BCEE <br />Water Reso rces Engineer <br />Office of the State Engineer <br />Division of Water Resources <br />cc: file <br />MV/mv <br />Office of the State Engineer <br />1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303-866-3581 • Fax: 303-866-3589 <br />www.watenstate.coms