Laserfiche WebLink
C-81-012: New Elk Midterm, Kent Gorham 11 <br /> size of each waste/refuse pile, volumes of topsoil and fill material on hand for <br /> reclamation, borrow areas, and portal reclamation methods. <br /> C. Update the costs and production figures used in the final bond calculation. <br /> Rule 4.03 Roads <br /> 33. In general, the vertical alignment of all roads are difficult to ascertain due to the poor <br /> quality of the reproduced topographic maps. Either submit vertical alignment maps for <br /> each road system, or if available, submit the roads map in electronic form, such as <br /> AutoCad, Survcadd, Quicksurf, etc , with polylines that have associated elevations. <br /> a. The access road to the RDA appears to not conform to rule 4.03.2(3)(a) vertical <br /> alignment. <br /> b. The light use road (De-icer road at RDA conveyor) appears to exceed the vertical <br /> restrictions of Rule 4.03.3(3)(a). <br /> C. The same comment applies to the access/light duty roads above the hoist house, and <br /> the road leading to the water tanks south of the industrial building. <br /> d. Although the Division has received a letter from the operator stating that all roads <br /> conform to the requirements of the recently changed rule, it would behoove the <br /> operator to reinspect the roads listed above and verify the vertical alignments. <br /> Rule 4.10 Coal Mine Waste Banks <br /> 34. Section 2.05.3, pages 26-44 need to be revised to delete dated material, such as paragraph <br /> 3 page 33 "A slope stability analysis was completed based on assumed parameters. When <br /> representative refuse material...". A study by CTL/Thompson for the RDA was <br /> performed and this information should be used in the permit section. <br /> a. Exhibit 30 is an original study for the RDA area, however, a theoretical stability <br /> analysis for the Development Waste Pile cannot be located. Regardless, a new <br /> stability analysis for the Development Waste Pile needs to be accomplished to <br /> include a full set of laboratory tests since pond tailings are being added to the pile. <br /> The addition of pond tailings can significantly alter strength parameters as well as <br /> well as other physical parameters density and compaction as evidenced by the <br /> unacceptable proctor test results preformed on this pile on March 22, 1996. <br /> -11- <br />