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FIGURE 2.06.5-1 <br />Sr. Environmental Engineer! <br />Land Manager <br />PH: (970)824-1579 <br />Fax: (970)824-1598 <br />December 7, 2006 <br />Ms. Jennifer Maiolo <br />Little Snake Office <br />Bureau of Land Management <br />455 Emerson <br />Craig, Colorado 8!625 <br />RE: Colowyo Mine C-1981-019, Revision No PR-02 <br />Request for Variance from Approximate Original Contour <br />• Dear Ms. Maiolo, <br />Colowyo Coal Company, L.P. is revising the current permit boundary with the addition of approximately <br />6,050 acres. This expansion area will include the South Taylor mining area which is located adjacent to <br />the southern extent of the current mining operation. As part of this expansion, Colowyo is requesting a <br />variance from approximate original contour for steep slope mining. According to Colowyo's records, the <br />Bureau of Land Management owns portions of Sections 17 through 22 and 28 through 30. These areas <br />will be affected by the mining operation and are shown on the attached post-mining topography Map 19B. <br />A ntap of the pre-mining topography and pre- and post-mining topography cross-sections are also attached <br />as Maps 18A and 20B, respectively. <br />The variance from approximate original contoue will allow an increase in forage, decrease erosion, and <br />modulate surface-water runoff. This will create a habitat more suitable to grazing and wildlife and will be <br />essential for achieving apost-mining use of rangeland. Please respond to this letter in writing with your <br />opinion as to whether this variance should be approved. <br />Please call me with any questions or if you desire additional information at the above phone number. <br />"fhank you for your assistance with this matter. <br />Sincerely, <br />Tay~~'`-_`~ <br />Senior Environmental Engineer/ <br />Land Manager <br />• Encl. -Map 18A, Pre-Mining Topography <br />Map ] 9B, Post-Mining Topography <br />Map 20B, Pl'e and Post-Mining Topography Cross-Sections <br />Colowyo \line • 5731 Stale Eiithway 13 • Meekrr, Gitondo 81641 <br />F+1 970 R24 lSnO • F+t 470 R24 1504 • www.nea.mnt <br />