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20% or greater as shown on Figure 2.06.4-1. The following are the specific findings required by <br />Rule 4.27.4 (the numbering follows that of Rule 4.274). <br />1. The Division has not authorized the retention of a highwall remnant for the South Taylor Pit. <br />The highwall will be ripped and dozed to a 3:1 slope to blend in to the approved post-mining <br />topography. <br />2. Colowyo will be reducing steep slopes (20% and greater as shown on Figure 2.06.4-1) along <br />the perimeter of the South Taylor Pit to no more than 3:1. These reduced slopes will decrease <br />the peak flows from runoff from precipitation and snow melt, thereby reducing the contribution <br />of suspended solids to the receiving streams. The watershed will, thereby, be improved. More <br />detail can be found in the PAP in Section 4.27 and on Maps 18A and 19B, the premining <br />topography and the post-mining topography, respectively. <br />3. Land above the highwall will only be disturbed to rip and grade the highwall to blend with the <br />backfilled and regraded pit and to achieve highwall reduction. This reduction will also help to <br />control surface water runoff by diverting the water into an approved post-mining drainage <br />channel. No temporary overburden storage is planned for above the highwall. <br />4. The lands where the variance is being requested are owned by both the Colowyo land <br />management company and the BLM. Both Colowyo and the BLM have requested, in writing, <br />that the variance be granted. These letters are contained in Figure 2.06.4-1. <br />5. The operations conducted at the Colowyo Mine are found to be in full compliance with the <br />permit and Rule 2.06.5. <br />6. Colowyo is not planning on retaining any spoil material on the highwall bench. <br />This concludes the Proposed Decision and Findings of Compliance for the Colowyo Mine Permit <br />Renewal 05. <br />Proposed Decision and Findings of Compliance 14 September 2009 <br />Permit Renewal 05 Page 74