Laserfiche WebLink
<br />TR-74 (04/2022) V-4 <br />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 II.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 surface 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 /> <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 />80, 162 (Refuse Disposal Area), 163 (Red Wash Drainage), Map 165 (Refuse Area 2345 <br />Preliminary Plan) (Map 103 (Railroad Loading Area) and Map 155 (Railroad Loop Area). <br /> <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 /> <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 /> <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 /> <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