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February 17, 2012 <br />Mr. Rob Zuber <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Dear Mr. Zuber: <br />Sincerely, <br />Tony Tennyson <br />Environmental Engineer <br />Encl. 2 copies <br />Cc: CF 1.1.2.83 <br />5731 Highway 13 <br />Meeker, Colorado 81641 <br />970 - 824 -1500 <br />RECEIVED <br />FEB .i <br />DIvisioR of rtec►amation, <br />Mining and Safety <br />Tony Tennyson, Environmental Engineer 970 - 824 -1532 <br />RE: Technical Revision — 94, East Pit Post - Mining Topography Revision, Colowyo Coal Mine, Permit <br />No. C- 1981 -019. <br />Enclosed please find two copies of a Technical Revision (TR) 94. This change revises the post -mine <br />topography (PMT) on the tie in point between the East Pit and West Pit. Per our previous discussions, <br />this revision captures the as -built on a piece of 2005 reclamation area and allows Colowyo to tie into this <br />area without re- disturbing approximately 20 acres of well - established reclamation. With this revision <br />Colowyo did not change any drainage alignments, elevations, or watershed boundaries. <br />Also included to ease the review, is an 8.5x11 figure to demonstrate the limits of the proposed PMT <br />change. This diagram is for review and informational purposes only and will not be a permanent feature <br />in the permit document. <br />Furthermore, included with this revision is a revision application, an index sheet to ease incorporation <br />into the permit document, and a proposed public notice for this change. If you have any questions or <br />require additional information, please feel free to contact me at your convenience at (970) 824 -1532. <br />