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<br />Protection of H~roloQic Balance <br />• Pursuant to Rule 2.07.6(2)(c), the Division has assessed the probable hydrologic <br />impacts to ground water and surface water at the King Coal and King II Mines. The <br />Division finds that the mine operations have been designed to prevent material damage <br />the hydrologic balance outside the permit area. <br />IV. Topsoil <br />The baseline soil inventories for the King Coal and King II Mines aze presented in Section <br />2.04.9 of the permit application, Topsoil replacement is described in Section 2.05.4. <br />Baseline surveying of soils was not performed in the King Coal Mine facilities azea due to <br />previous disturbances. Instead, a survey by the Soil Conservation Service was performed <br />for adjacent, undisturbed azeas. This survey identified three soil mapping units as described <br />in Section 2.04.9 and depicted on Map C-6. Map King II-006 shows nine soil mapping <br />units identified on the King II Mine. Approximately 1.5 acres aze to be disturbed at the <br />King Coal Mine as a topsoil borrow area at the end of the life of the mine. <br />The owner of the land in the surface facilities azea of the King Coal Mine has allowed <br />access and rights for a topsoil borrow area shown on Map C-4 to be used for reclamation <br />purposes. Topsoil and suitable growth medium have been analyzed and the results aze <br />provided in Appendix 9 of the King Coal Mine permit volume and Appendix 6 of the King <br />• II Mine permit volume. <br />V. Sealing of Drilled Holes and Underground Openings <br />Information pertaining to the sealing of drill holes and portal and ventilation openings is <br />presented in Section 2.05 of the permit application. <br />All portal and ventilation entries will be permanently sealed by backfilling each opening <br />with underground development waste, common fill, and sediment from the two sediment <br />ponds for a distance of 50 feet from the entrance. Once backfilling its completed, each <br />entry will be collapsed with explosives. NKC has adequately demonstrated that sufficient <br />quantities of fill material exist on site to complete both portal and mine bench backfilling <br />activities. <br />A single drill hole currently exists at the mine site in Hay Gulch and is used as a water well. <br />The landowner has requested that this well remain open following permanent cessation of <br />operation. The Division previously agreed with this request and hereby reaffirms this <br />previous approval. Therefore, the drill hole is not required to be sealed. (4.07). <br />VI. Use of Explosives <br />NKC does not store or use explosives; therefore, the requirements of this section are not <br />• app[icab[e. (4.08}. <br />19 <br />