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RECEIVED <br />AUG 2 8 2008 <br />Division ui r<„ciamation, <br />DEPARTMENT OF NATURAL RESOURCES Mining and Safety <br />DIVISION OF WATER RESOURCES <br />Bill Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />Executive Director <br />August 26, 2008 <br />Jerry Nettleton <br />TwentyMile Coal Company <br />29515 Routt County Road 27 <br />Oak Creek, CO 80467 <br />Dick Wolfe, P.E. <br />Director/State Engineer <br />Erin C.H. Light P.E. <br />Division Engineer <br />RE: 6 Main North Mine Dam <br />Non-Jurisdictional, District 57 <br />Water Division VI, Routt County <br />Dear Mr. Nettleton: <br />I have reviewed your application to build a non jurisdictional dam along an un-named tributary to Fish <br />Creek below the 6 Main North Ventilation shaft area. This reservoir is to be off line and used as <br />buffering capacity for the recycle of water from the 10 Right Dewatering Well back to the mine for <br />operational purposes. Erin Light, Division Engineer, has signed the "Notice of Intent" for this dam as it <br />was written. The signed notice is being returned for your records, a copy will be maintained in this <br />office, and a copy will be sent to the Water Commissioner for District 57. <br />Construction of this dam should follow sound engineering practice to insure the integrity of the <br />structure. The Water Commissioner and possibly myself will check the dam during construction or <br />shortly after completion for compliance with the specifications listed in your Notice of Intent. <br />If you should have any questions about this matter or need any additional information about dam safety <br />related issues, please feel free to contact me at (970) 879-0272 ext. 6014. <br />Sincerely, // <br />, all? <br />John R. Blair, P.E. <br />Dam Safety Engineer, Division VI <br />cc: Andrea Schaffner, Water Commissioner, District 57 <br />Erin Light, Division Engineer, Division VI <br />Mark Haynes, Dam Safety Chief, Denver <br />Water Division 6 • Steamboat Springs <br />P. O. Box 773450 (505 Anglers Dr., Suite 101) • Steamboat Springs, CO 80477 • Phone: 970-879-0272 • Fax: 970-879-1070 <br />wwwmater.state.co.us