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Aj. <br />WWC ENGINEERING <br />November 9, 2012 <br />Rob Zuber, P.E. <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 -2273 <br />• West Ridge Sediment Pond primary spillway replacement. (Exhibit 4.6 -19c) <br />• Application Form for a Revision to a Coal Mining and Reclamation Permit; <br />• Index Sheet for Mine Permit Amendments or Revisions; <br />• Revised Page TOC -33, MR -55, November 2012; <br />• Revised Page 4.6 -96, MR -55 November 2012; and <br />• Exhibit 4.6 -19c of the As -Built for the primary spillway. <br />Troy Summers <br />Project Manager <br />WWC Engineering <br />JAT <br />Enclosures <br />File: 2011 -180 <br />cc: Mark Brearley, Chevron Mining <br />611 Skyline Road - Laramie, WY 82070 - (307) 742 -0031 <br />FAX (307) 721 -2913 - E -mail: infolar @wwcengineering.com <br />RECEIVED <br />Nov 13 2012 <br />, <br />RE: Edna Mine Permit Minor Revision, PN C- 1980 -001 <br />Dear Mr. Zuber: <br />Chevron Mining Inc. is submitting a request for a Minor Revision of the Edna Mine Permit Application <br />PN C -80 -001. This permit revision includes the following item: <br />Enclosed, are three copies of the above referenced Edna Mine Permit Minor Revision. The minor <br />revision material has been formatted to enable direct substitution of the revised pages into the permit <br />document. The following materials are provided under this letter: <br />Additionally, copies of the permit revision will be sent to the appropriate federal agencies upon your <br />review and at your request. Should the Colorado Division of Reclamation, Mining and Safety have any <br />comments or concerns regarding this permit revision, please contact me at your convenience. <br />