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Page 1 of 3 <br />June 15, 2015 <br />CHANGE SHEET FOR PERMIT REVISIONS, TECHNICAL REVISION, AND MINOR REVISIONS <br />Mine Company Name: Colowyo Coal Company Permit Number: C-1981-019 <br />Revision Description: TR -105 Postmining Topography <br />Modification <br />Volume Page, Map or other Permit Page, Map or other Permit Entry Description of Change <br />Number Entry to be to be <br />REMOVED ADDED <br />Page 1 <br />Added on page 4.14.3 discussion regarding haul road corridor <br />1 <br />Pages 4.14-3 through 5 <br />Pages 4.14-3 through 5 <br />per review comment, other pages provided for pagination <br />only. <br />1 <br />Pages 4.27-1 and 2 <br />Page 4.27-1 <br />Revised statement regarding operations on steep slopes per <br />review comment. <br />2A <br />No Change <br />2B <br />No Change <br />2C <br />Exh. 7-14TOC-1 and 2 <br />Exh. 7-14TOC-1 and 2 <br />Table of Contents for Volume 2C has been revised and <br />updated. <br />2C <br />Page Exh. 7-14-6 to 8 <br />Page Exh. 7-14-6 to 8 <br />Updated Exhibit 7, Item 14, Table 1 Summary of Ditch and <br />Channel Design Parameters as a result of review comment <br />2C <br />Pages Exh. 7-14C-1 to 28 <br />Exh. 7-14C, Pages 7 to 16 Taylor <br />Updated SEDCAD model to correct error for the missing UHS <br />Taylor Trib Ditch <br />Trib. Ditch <br />value. <br />2C <br />Pages Exh. 7-14E-1 thru 30 <br />Pages Exh. 7-14E-1 through 4 <br />Revised Introductory text <br />2C <br />N/A <br />Pages Exh. 7-141-15 <br />Revised text discussion and SEDCAD modeling for East <br />Taylor Ditch for revised PMT <br />2D <br />Exh. 7-14TOC-1 and 2 <br />Exh. 7-14TOC-1 and 2 <br />Table of Contents for Volume 2D has been revised and <br />updated. <br />2E <br />Exh. 7-14TOC-1 and 2 <br />Exh. 7-14TOC-1 and 2 <br />Table of Contents for Volume 2E has been revised and <br />updated. <br />Within the Exhibit 7, Item 20, Part PP section for Prospect <br />2E <br />Page Exh. 7 -PP -107 <br />Page Exh. 7 -PP -107 <br />Pond, added text to a formerly "Intentionally left blank page" to <br />describe the impacts of the postmining topography change to <br />the Pros ect Drainage. <br />Added 2 figures, and an additional SEDCAD model added <br />after page Exh. 7 -PP -296 within Exhibit 7, Item 20, Part PP <br />2E <br />N/A <br />Pages Exh. 7 -PP -297 to 350 <br />section for Prospect Pond. This model, for the final year after <br />the entire watershed is reclaimed, evaluates the increase in <br />draina a area as a result of postmininq to o ra h chan e. <br />3 <br />No Change <br />Page 1 <br />