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• V.A.2 Water Quality Control Plan Mined material greater than 1.6 specific gravity is considered <br />representative of the anticipated coal waste material. Preliminary analyses (Table V-1) indicate that <br />he coal waste material is not toxic or acid forming. Further analyses have been performed and are <br />included in Appendix 9 of Section II.B. Since other analyses on the coal, overburden, and surface <br />soils {see the Appendices of Section II.B, Geology Report, and Table 11.1-3 of Section II.I Soils <br />Report) do not indicate the presence of toxic or acid-forming materials, runoff from the coal waste <br />banks, the disturbed areas or the exteriors of the surtace facilities are not expected to have <br />objectionable characteristics other than excess suspended solids. Groundwater seepage is not <br />expected to have any objectionable characteristics. <br />Runoff from storms equal to or less than a 10-year, 24-hour design storm is treated in <br />sedimentation ponds designed in accordance with Section 4.05.6 as discussed in Section V.B-2. <br />The mine drainage plan, including all sedimentation control facilities, is presented on Maps 23, 24, <br />25, 26, 27, 32 and 35 ("D" Portal), Maps 86 and 89 (Ventilation Entry), Maps 76, 77, 77A, 78, 79 <br />and 80 (Refuse Disposal Area), Map 103 (Railroad Loading Area) and Map 155 (Railroad Loop <br />Area). <br />Sedimentation control measures for roads and other facilities not requiring special ponds include <br />the installation of one or more of the following: <br />• sumps <br />• straw/hay filters <br />• silt fence <br />• culverts <br />• check dams including French berms and drains <br />• lining of ditches <br />• surface roughening <br />• gravel armoring <br />• road outlet structures <br />• interim or concurrent reclamation of disturbed slopes <br />Mine openings are located, designed and constructed to prevent the gravity discharge of water from <br />the mine. Mine openings will be sealed during reclamation as indicated in Section V.F, "Sealing of <br />Mine Openings and Drill Holes." <br />The process water system is designed to be essentially closed. Process water ponds are lined to <br />prevent seepage. An emergency overflow pond is provided to catch drainage from a catastrophic <br />• <br />Mid-Term Review 2002 (8/2002) V-4 <br />