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?y Colowyo Coal Company <br />0V 5731 State Highway 13 <br />0 <br />0 Meeker, CO 81641 <br />Owe <br /> <br /> <br />0 September 3, 2009 <br />Mr. James R. Stark <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 /> <br />SEP U, y <br />Division, <br />Mining and Safety on, <br />RE: Technical Revision No. 81, South Taylor Fill and PMT Change, Colowyo Coal <br />Mine, Permit No. C-1981-019. <br />Dear Mr. Stark, <br />Enclosed please find two copies of materials provided for Technical Revision No. 81. This <br />change to the permit updates the boundaries of the South Taylor Fill. Colowyo has found it <br />necessary to extend both portions of the South Taylor Fill, (East Taylor and West Taylor <br />Fills), in order to have temporary locations to store out of pit spoils from the South Taylor <br />Pit. This change will affect both the temporary and permanent volumes in these two <br />portions of the South Taylor Fill. Colowyo has changed all of the affected maps and text, as <br />well as completed revised hydrologic modeling for West Taylor Pond in order to make this <br />change. Changes to the post mining topography and four associated permanent drainage <br />channels in this area have also been made in order to reflect the requested fill extension. <br />Colowyo recognized that this revision will result in changes to bond calculations, but would <br />like this change to be reviewed prior to making any permanent alterations to the bond <br />information. <br />Included with the revision package is an application form, the public notice, an index sheet <br />and other pertinent material associated with this revision application for incorporation into <br />the permit. <br />Should you have any questions or require additional information, please feel free to contact <br />me at (970) 824-1529. <br />Sincerely, <br />J ifer Se ulski- arton <br />Environmental Engineer <br />Encl. 2 copies <br />Cc: file CF 1.1.2.70