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' ~ r sL I / 2.05.6(3) SUB-SURFACE HYDROLOGY HYDROLOGIC BALANCE III III III III IIII III - - L ---- Doc Date:17/11/2001 BLUE FLAME COAL COMPANY does not encounteY ground water during the course of normal mining operations. Neither will it put to use processed water during the normal mining operations. The mine is located approximately 70 feet above the water table and the formation being mined is not active as an aquifer. Therefore, BLUE FLAh1E COAL COMPANY will not create any impact on the sub-surface hydrologic balance. MINE SITE SURFACE HYDROLOGY: BLUE FLAME COAL MINE will have little to no impact on the groun d water system and a slight impact on the surface hydrology. Proposed mining in this upper Menefee coal seam will not disn~pt aquifers, streams, or the w~ tershed . (up slope areas of permit area). The mining bench is located in the upper reaches of the Hal Gulch drainage system. The diversion ditches, sedimentation ponds, and surface structures are depicted on the Mine Surface Map and Hydrology Map. Surface run-off on and around the mine site will be handled' in two ways: (]) surface flow over the disturbed mining bench will be collected into a sediment pond, and surface flow from the up-slope (watershed) areas will be diverted around the mine bench into the meadow North of the mine site. See Hydrology Map. The disturbed acreage is limited to 4.] acres upon which thelcurrent surface facilities are constructed. Natural drainage over this area is to the North on a slope of less than 68. Little or no top soil remains on th~ mining bench. Historically, the mining of coal at this site has spanned thirty years; no top soil was ever saved or stored. One sediment pond, North of the mine . bench and adjacent to the meadow will contain water and sediment run-off from the disturbed surface.