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<br /> <br />Page 2 of 2 <br />CHANGE SHEET FOR PERMIT REVISIONS, TECHNICAL REVISION, AND MINOR REVISIONS 9/23/2010 <br />Mine Company Name: Colowyo Coal Company Permit Number: C-1981-019 <br />Revision Description: TR-87 East Pit Reclamation <br />Sequencing and Hydrology <br />Volume Page, Map or other Permit Page, Map or other Permit Description of Change <br />Number Entry to be Entry to be <br />REMOVED ADDED <br /> <br />5A No Change <br />5B No Change <br />6 No Change <br />7 Map 12 - Hydrology South Map 12 - Hydrology South Add East Pit Sediment Control Structure locations to map. <br />Resubmitted with revised stationing and alignment of lower <br />ortion of North Trib East Pit Ditch. <br />8 Map 29 - Spoil Grading Map 29 - Spoil Grading Made an update to the Backfill and Grading Timing Blocks in the <br />East Pit. <br />9 Map 33 - Postmining Permanent <br />Drainage Profiles Map 33 - Postmining <br />Permanent Drainage Profiles Revised stationing and profile for North Trib, East Pit Ditch. <br />10 No Change <br />11 No Change <br />12 No Change <br />13 No Change <br />14 No Change <br />Note: Bold text denotes materials provided with this submittal. <br />Page 2