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Twentymile Coal Company has previously been approved to dispose of select non-coal waste in a <br />location south of the area 1 pit. This location is located in spoil material from the Energy Mine No. I, <br />and is located above the water table (4.11.4(1)-(3)). <br />X. Backfilling and Grading <br />The Foidel Creek mine portals are located along Foidel Creek, faced-up in highwall from the adjacent <br />surface mining activity in Eckman Park. Partial backfilling and grading was done to help seal the <br />portal area from groundwater inflow. The remaining backfilling and grading will occur at the <br />completion of mining activity at the Foidel Creek mine. No specific approvals are granted under this <br />section. <br />XI. Revegetation <br />The Division has previously approved the use of introduced species in the reclamation seed mix. <br />Introduced species aze included in the pastureland and rangeland seed mixes. The applicant has <br />submitted information which shows that the introduced species are desirable and necessary to <br />achieve the approved post-mining land use, and are not poisonous or noxious, (4.15.2). <br />Methods to measure herbaceous cover and production, species diversity, and woody plant <br />density are discussed beginning on pages 2.04-52 and 2.05-115 of Vol. I for all but the Fish <br />Creek Tipple area. These techniques include: <br />a) ten-meter transects using a ten point optical frame every one meter for a total of 100 <br />"hits" to evaluate vegetative cover; <br />b) clipping of aone-square-meter quadrant followed by drying for 24 hours at 1 OS degrees <br />and weighing to the nearest 0. I gram for productivity; <br />c) bagging by species during productivity analysis to determine species diversity; <br />d) shrub density will be evaluated using a modified point-center-quarter technique. <br />For the Fish Creek Tipple area the methodologies will be: <br />a) 50 meter transects with 10 points every 5 meters for 100 "hits" for determination of <br />cover; <br />b) production from the clipping of three meter squared quadrants placed randomly along the <br />cover transect; <br />c) woody stem density will be determined by counting rooted shrubs along a 2-X-50-meter <br />transect; <br />d) successful diversity will require two perennial grasses to exceed 5% composition and one <br />perennial forb to exceed 3% composition with no one species exceeding 40% <br />composition. <br />Specific details for the Fish Creek Tipple concerning revegetation success and sampling <br />methodologies can be found beginning on page 2.05-48 of Vol. V[I. <br />21 <br />