REV101871

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 10/11/2007
• Doc Name: Adequacy Review Letter
• From: DRMS
• To: Colowyo Coal Company L.P.
• Type & Sequence: TR68
• Media Type: D
• Archive: No

This concludes the preliminary adequacy review for the Colowyo Mine Technical
Revision 68. Please contact me if you have any questions or comments regarding the
review.
Sincerely,
James R. Stark
Environmental Protection Specialist