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Debris, Acid-forming or Toxic-formin Wastes and Flammable Materials <br />Geochemical tests of the coal, development waste, and process waste <br />materials show no significant release of acid-forming or toxic-forming <br />substances from these materials (refer to Geochemical Report, Appendix <br />4-D.) To further protect against any potential contamination to the <br />environment, the following safeguards are employed. <br />° Drainage from the disturbed area is routed for treatment <br />in sediment control structures, and clean water runoff is <br />diverted from contact with the disturbed area as outlined <br />in Protection of the Hydrologic Balance, Section 4.6.1.3. <br />° Coal waste ponds confine waste material to prevent contact <br />with surface and ground waters. The ponds are maintained <br />and operated as detailed in Protection of the Hydrologic <br />Balance. <br />° All boreholes, shafts, and wells are sealed to prevent <br />pollution of surface or ground water and to prevent mixing <br />of ground waters of significantly different quality. <br /> <br />4-25 <br />