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proposed changes to the South Taylor Pit's post-mining topography. These changes will <br />have impacts to the two ponds proposed for the South Taylor Pit area, the Section 21 and <br />Section 28 Ponds. The current models for the Section 21 and Section 28 Ponds are for <br />the approved mining limits and post-mining topography, not the proposed changes to the <br />mining limits and post-mining topography. As such, these pond models are not valid for <br />the proposed changes. Based on the proposed changes to the mining limits and post- <br />mining topography contained in Technical Revision 81, please update the pond <br />models for the Section 21 and Section 28 Ponds. These revised pond models need to <br />reflect the proposed changes to the mining limits, the post-mining topography and <br />the spoil grading plan. <br />39. Colowyo has made numerous changes and additions to Exhibit 7, Item 20 that have not <br />been reflected in the Table of Contents. Please review the Table of Contents for <br />Exhibit 7, Item 20 and ensure that all changes and additions have been correctly <br />incorporated. <br />40. Map 18B - Pre-Mining Topography-Lower Wilson/South Taylor Area shows the <br />currently approved mining limits for the South Taylor Pit, not the proposed mining limits. <br />Please update Map 18B to reflect the proposed changes to the mining limits for the <br />South Taylor Pit. <br />41. Colowyo has provided Map 45 - South Taylor Fill, which shows the design of the West <br />Taylor and East Taylor Fills, including cross-sections. With the proposed changes to the <br />mining limits to the West of the South Taylor Pit, Colowyo is proposing to eliminate <br />approximately 92 acres of the pit. In the originally approved mining and reclamation <br />plan this area was going to be backfilled (obviously). With the revised plan, however, <br />Colowyo is proposing to use a portion of this approximately 92 acres for an extension of <br />the West Taylor Fill. This proposed extension of the West Taylor Fill runs from <br />approximately 335000N to approximately 343000N and is shown on Map 41A but it is <br />not shown on Map 45. Please include the portion of the West Taylor Fill that will run <br />along the outside of the South Taylor Pit, on the west edge, from approximately <br />335000N to approximately 343000N on Map 45. Please adjust the scale of Map 45 as <br />necessary to show the entire West Taylor Fill. <br />42. On Map 29A - Spoil Grading-South Taylor Area, Colowyo has changed the dates of <br />reclamation of the faces of the West Taylor Fill from 2011-2012 to 2012-2013. Colowyo <br />has similarly changed the dates of reclamation of the face of the East Taylor Fill from <br />2011-2012 to 2013-2014. Based on the South Taylor Pit mine plan, as shown on Map <br />23A, the South Taylor box-cut will be opened/completed in 2011, with the small cut to <br />the west of the box-cut completed in 2012. Based on Colowyo's discussion of the West <br />Taylor and East Taylor Fills, they are necessary for the development of the box-cut. If <br />the box-cut is being completed in 2011 it follows that the permanent fills will be <br />completed in that general timeframe as well. Additionally, it is a general practice to <br />complete the face of the fill first and place the remaining material behind (upstream) the <br />face following the completion of the face. Based on Colowyo's discussion of mining in <br />the South Taylor Pit and a review of maps 23 and 29, it appears as though there is a