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<br />VII. Disposal of Excess Spoil <br />Foidel Creek Mine is an underground operation. This revision proposes mining into the remainder of <br />the Eastern Mining District and progressing into the Northeast submains utilizing the existing portals. <br />No development waste is expected to be removed from the mine. No excess spoil exists at the Foidel <br />Creek Mine. No specific approvals are granted for this section. <br />VI11. Coal Mine Waste Banks <br />Technical Revision No. 21 (TR-21) approved a waste pile at the main facility area of the Foidel Creek <br />mine. The pile configuration is a sidehill design with a maximum estimated volume of 3 million cubic <br />yards of waste. The source of the waste is a prep plant which processes any low quality coal product <br />produced by mining. The Division approves the design and any alternative specifications as <br />represented in Exhibit 26A of the permit, (4.10.](1)). <br />IX. Coal Mine Waste <br />No specific approvals are granted under this section, (4.l l.l). <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 are included in the cropland, pastureland, and rangeland seed mixes. The <br />applicant has submitted information which shows that the introduced species are desirable and <br />necessary to achieve the approved post-mining land use, and are not poisonous or noxious, <br />(4.15.2). <br />Methods to measure herbaceous cover and production, species diversity, and woody plant density <br />are discussed beginning on pages 2.04-52 and 2.05-I 15 of Vol. I for all but the Fish Creek Tipple <br />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 105 <br />degrees and weighing to the nearest 0.1 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 />16 <br />