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to reduce, or approve of a variance from, the maximum peak particle velocity limits <br />specified in Rule 4.08.4(]0)(c)(i). <br />VII. Disposal of Excess Spoil <br />A. The Division approves the use of disposal areas for excess spoil. (4.09.1(1)) <br />B. The Division has reviewed a general and detailed design plans for Fills 1-9 and <br />approves them. <br />C. Alternative specifications for design and construction of the fill have not been <br />proposed by the applicant. However, they maybe used, following a thorough <br />analytical demonstration that such alternatives shall result in a structure as <br />environmentally sound and structurally stable as a fill designed with standard <br />specifications. (4.09.1(3)) <br />D. The Division approves the use of vegetation and organic material as mulch or as an <br />amendment to topsoil to control erosion, promote growth, or increase moisture <br />retention. (4.09.1(4)) <br />E. The Division approves of the location of the disposal areas. (4.09.1(6)) <br />F. The Division approves the use of terraces in order to conserve soil moisture, <br />control erosion, and enhance stability. They are compatible with the post-mining <br />land use of rangeland and wildlife habitat. The width of these terraces shall not <br />exceed 20 feet and the vertical distance between terraces will be 40 feet. Culverts <br />or underground rock drains aze not approved on the ten•aces. (4.09.1(9)) and <br />4.14.2(2) <br />G. The applicant has not proposed to dispose of excess spoil in underground mine <br />workings. (4.09.1(15)) <br />VIII. Coal Mine Waste Banks <br />No specific approvals are granted under this section. <br />IX. Coal Mine Waste <br />A. The applicant has not proposed to dispose of underground development waste in <br />underground mine workings. Underground mining is not proposed or approved <br />under permit revision no. 1. (4.113) <br />B. The Division has not reviewed and approved of a plan for extinguishing coal mine <br />waste fires. Coal mine waste will not be disposed of within the permit area <br />(4.11.1) <br />19 <br />