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(4.12.2 and 4.27.3) <br /> 3. The Post Mine Topography Map (Map M12) is a permit requirement in <br /> permit section 3.5.3. <br /> 4. During PR9, TMI requested a variance for backfilling and grading portions <br /> of the L and Ash Pits to the approximate original contour in accordance with <br /> Rule 2.06.5. Based on a stability analysis provided by TMI with (PR9), they <br /> demonstrated that based on unique combinations of steepness of the pit floor, <br /> spoil thickness, spoil saturation, and the presence of a weak shale/clay layer <br /> in the floor of the pit, steep slopes for the final cut of the L Pit and Ash Pit <br /> should be identified as any slope over 16 degrees. Therefore, these areas <br /> qualify for a variance from the requirement to backfill and grade to the <br /> approximate original contour under the steep slope mining provision. The <br /> findings required for a variance in accordance with Rule 2.06.5 and Rule <br /> 4.27.4 are discussed below in the Operations on Steep Slopes, Section XX of <br /> this document. <br /> XI. Revegetation <br /> The Division previously approved Trapper's revegetation plan as set forth in permit Section <br /> 3.6,Vol. III of the application. <br /> 1. The applicant uses introduced species in the reclamation seed mix, and submitted <br /> information illustrating the desirability and necessity of introduced species in achieving <br /> the approved post-mining land use illustrating that these species are not poisonous or <br /> noxious (4.15. 2). In conjunction with Trapper's years of reclamation experience, <br /> Trapper has reduced the number of introduced species in the seed mixes utilized at the <br /> site. DRMS found the seed mix adjustments acceptable. <br /> 2. Methods to measure species diversity,woody plant density,herbaceous cover and <br /> production are discussed in permit section 4.4.1,Volume IV. Seed mixes and <br /> revegetation practices are designed to meet diversity standards set forth in the permit. <br /> The applicant will reestablish shrubs on Range Sites A and B by including various <br /> native shrubs in the seed mixes and by transplanting mature woody shrub clumps. <br /> There is no shrub density standard for Range Site C. (4.15. 7(1)). <br /> XII. Post-mining Land Use <br /> Post-mining land use is discussed under Section 4.2, Vol. IV of the permit application. <br /> Cropland, rangeland and wildlife habitat are currently approved post-mining land uses. <br /> These land uses meet the criteria of Rule 4.16.3. <br /> With the PR10 permitting action, some lands to be disturbed and reclaimed were <br /> previously cropland. The current use of these lands is grazing and wildlife habitat. <br /> Trapper worked with the State Land Board for approval of the land use change from <br /> cropland to rangeland. <br /> XIII. Protection of Fish, Wildlife and Related Environmental Values <br /> Section 4. 6 of Vol. IV of the permit application discusses the protection of fish, wildlife <br /> and related environmental values. <br /> 19 <br />