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-g- The disturbance of these overburden and interburden materials could impact the quality of the ground and surface wafer, and affect the suitability of the overburden as a plant growth medium. The overlying and underlying strata of the Hoyle coal seam and the overlying strata of the Sudduth coal seam will be adequately mixed within the spoils during mining. The strata underlying the Sudduth seam is a shale. The weathering of this shale will be minimal due to the low permeability of the strata and the limited exposure at the pit bottom. Thus, the contribution of dissolved solids to the yround water system will be minimal. f9ost of the coal will be removed from the site during mining and thus reduce the potential toxicity. Given the currently proposed operations plan for the Bourg Mine, overburden strata which have toxic constituents will be adequately mixed and diluted within the spoils. The multiple handling of the overburden will provide this mixing, thus reaucing the probaoility that these elements will affect plant growth. Oxidized coal from outcrops will have to be selectively handled if not removed from the site. To reduce the toxic effects of the oxidized coal, this material should be placed above the pre-existing water table and out of the root zone of plants. The operator has a snap showing the pre-existing ground water levels, Figure 7. This map, in conjunction with a map of the reclaimed surface contour, would delineate those areas which would be suitable for isolating the oxidized coal. It is, therefore, stipulated: Stipulation No. l: WITHIN 30 DAYS OF PERMIT ISSUANCE, THE PERMITTEE SHALL PROVIDE A MAP AND DISCUSSION, TO BE APPROVED BY THE DIVISION, WHICH DELINEATES THOSE AREAS IN WHICH OXIDIZED COAL HAS BEEN OR WILL BE DISPOSED, AND EXPLAINS THE DEPTH AND METHOD OF DISPOSAL, INCLUDING, BUT NUT LIMITED T0, COt4PACTION ACHIEVED, THICKNESS OF THE LAYER, DISPERSION TECHNIt2UES, AND AMOUNT OF FILL ABODE THE WEATHEKED MATERIAL. With the acceptance of this stipulation, the operation is in compliance with the requirements of this section. V. Hydrologic Balance: Surface Water - Rules 2.04.5, 2.04.7, 2.05.3, 2.05.6 and 4.05 Hydrologic information for the Bourg Strip Mine is located in section I, pages 1 through 31, and supporting information and designs are located in Appendix A of the application. A detailed description of the surface water resources and the impacts of mining on surface water can be found in Section IX titled "Probable Hydrologic Consequences of Mining and Cumulative Hydrologic Impacts Study" of this permit document.