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VL Use of Explosives <br /> GCC does not store or use explosives; therefore, the requirements of this section are <br /> not applicable. <br /> VII. Disposal of Excess Spoil <br /> The King Coal Mine is an underground mine, and the operation will not result in <br /> the production of excess spoil. The requirements of this section are not <br /> applicable (4.09). <br /> VIIL Coal Mine Waste Banks <br /> A. The Division has approved plans for use, construction and maintenance of a coal <br /> mine waste disposal area. Details concerning the construction of the disposal <br /> area (Refuse Pile) can be found in King I Appendix 10(1) of the permit <br /> application. The coal mine waste is and will continue to be underground mine <br /> waste rock extracted over the combined life of the King I and King II Mines. <br /> The material is composed of dense, medium grained sandstone with occasional <br /> shale and carbonaceous shale partings. A limit equilibrium static analysis was <br /> performed using effective stresses to assure long term stability of the bank. A <br /> relatively flat 2.5h:1v slope is used for the face of the waste pile. This <br /> analysis provided a range of factors of safety between 1.85 and 2.74, well above <br /> the required 1.5. <br /> The Refuse Pile is located east of the King I Mine entrance, beginning just east <br /> of the shop building and extending up the east side drainage approximately 900 <br /> feet (see Map King I-007 in the PAP). An intercept channel (Reach 1 on Map <br /> King I-007) was constructed north of the pile to divert flow from the undisturbed <br /> area around the site and to Hay Gulch (via a series of culverts and channels that <br /> run along the east side of the King I disturbed area). Similarly, a channel was <br /> constructed at the bottom (south side) of the Refuse Pile to intercept runoff <br /> from the pile. This channel is Reach 10, and it routes the water to the two <br /> sediment ponds at the lower end of King I. An underdrain system was <br /> constructed beneath the Refuse Pile, and the two branches of this system drain <br /> to a series of culverts and channels that lead to the sediment ponds. (4.10.1(1)). <br /> B. The applicant has not submitted a plan for disposal, at the approved disposal <br /> area within the permit boundary, of mine waste materials generated by <br /> activities outside the permit boundary (4.10.1(2)). <br /> C. The disposal area will be inspected on a regular basis by a qualified professional <br /> specialist under the direction of the professional engineer, experienced in <br /> construction of similar earth and waste structures. Inspection by this person has <br /> 20 <br />