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Twentymile Coal Company has previously been approved to dispose of select non-coal waste <br />in a location south of the Area 1 pit. This location is located in spoil material from the Energy <br />Mine No. 1, and is located above the water table [Rule 4.11.4(1)-(3)]. In addition, coazse coal <br />processing waste is placed in the coal mine waste bank ~. <br />Coal processing waste fines aze placed in the coal mine waste bank or returned (thickener <br />underflow) to abandoned workings in the Eastern Mining District.12 <br />There are two permitted temporary storage excavated pits for mine development waste. These <br />wastes are from shafts at the 18-Right Ventilation Shaft and 6-Mains North Ventilation Shaft. <br />No coal mine wastes are stored at the Fish Creek Mine or Fish Creek Tipple (Rule 4.11.3). <br />X. Backfilling and Grading <br />The Foidel Creek mine portals aze located along Foidel Creek, faced-up in highwall from the <br />adjacent surface mining activity in Eckman Park. Partial backfilling and grading was done to <br />help seal the portal azea from groundwater inflow. The remaining backfilling and grading will <br />occur at the completion of mining activity at the Foidel Creek mine. No specific approvals <br />are granted under this section. <br />XI. Revegetation <br />The Division has previously approved the use of introduced species in the reclamation <br />seed mix. Introduced species are included in the pastureland and rangeland seed mixes. <br />The applicant has submitted information which shows that the introduced species are <br />desirable and necessary to achieve the approved post-mining land use, and aze not <br />poisonous or noxious (Rule 4.15.2). <br />Methods to measure herbaceous cover and production, species diversity, and woody <br />plant density are discussed beginning on pages 2.04-52 and 2.05-115 of Vol. I for all <br />but the Fish Creek Tipple azea. These techniques include: <br />a) using ten-meter transects and a ten point optical frame every one meter for a total <br />of 100 "hits" to evaluate vegetative cover; <br />b) clipping of a one-squaze-meter quadrant followed by drying for 24 hours at 105 <br />degrees and weighing to the neazest 0.1 gram for productivity; <br />c) bagging by species during productivity analysis to determine species diversity; <br />d) evaluating shrub density by using a modified point-center-quarter technique. <br />u PAP, page 2.05-96 <br />iz PAP, page 2.05-97.3 <br />24 <br />