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CHANGE SHEET FOR PERMIT REVISIONS, TECHNICAL REVISION, AND MINOR REVISIONS <br />Mine Company Name: Colowyo Coal Company <br />Page 1 of 2 <br />9/23/2010 <br />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 />1 TOC Page vii and Pages 28-37 TOC Page vii and Pages 28-37 Update Table of Contents to list Figure 2.05-6. <br /> (11 pages). (11 pages). <br />1 Please discard Rule 2 Page 2.05- Rule 2 Page 2.05-30 and Page Updated text in 2.05 which describes Colowyo's commitment to <br /> 33 that was submitted with the 2.05-51. Please re-replace the implement surface runoff control structures and techniques <br /> August 10 TR-87 Adequacy original Rule 2 Page 2.05-33 within the East Pit. Also updated text about stock tank <br /> package. Remove Rule 2 Page submitted with TR-82 (3 pages). impoundments by referring readers to Figure 2.05-6. <br /> 2.05-30 and 2.05-51 (3 pages). <br />1 Rule 4 Page 4.05-6 through Rule Rule 4 Page 4.05-6 through Rule Update text in 4.05 which describes stock tank impoundments. <br /> 4 Page 4.05-10 (5 pages). 4 Page 4.05-10 (5 pages). Added text referring to the new Figure 2.05-6. Add reference to <br /> Exh. 7-14R East Pit Reclamation Sequencing. <br />1 N/A Figures, Page 27A Added Figure 2.05-6 showing how stocktanks are constructed. <br />2A No Change <br />2B No Change <br />2C Add Exhibit 7, Item 14, Part R (Introductory text, seven figures, <br /> and three associated SEDCAD analyses) for the East Pit <br /> Exh. 7-14R-1 thru 142 reclamation draining to Prospect Pond. Resubmitted with <br /> N/A revised text, 7 figures, and modeling resulting from change in <br /> Pages 7-1411-4 thru 10 alignment of lower portion of North Trib, East Pit Ditch. The 7 <br /> resubmitted Figures were subsequently resubmitted showing the <br /> revised alignment of the North Trib, East Pit Ditch. <br />2D No Change <br />2E No Change <br />3 No Change <br />4 No Change <br />Page 1