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• Conventional statistical analysis methods will be used to evaluate woody plant densities on <br />reclaimed azeas within the Mine Area and for both vegetation reference areas. Woody plant <br />density for seeded areas and the reference area will be measured using 50m x lm belt <br />transects along the same transect lines. This data will be combined with direct count woody <br />plant density data for the shrub clumps using a weighted average approach. The "t-test" <br />method (Larson, 1980) will be used to evaluate similarity of woody plant densities between <br />the weighted average reclaimed azea value and the corresponding reference area or, in the <br />case of the grasslands type, the revised woody plant count. If the absolute value of woody <br />plant density for the reclaimed areas is greater than or equal to that of the reference area or <br />revised woody plant count (grassland type) for the 90 percent confidence interval, then <br />revegetation will be deemed adequate relative to woody plant density. <br />Disposal of Debris, Acid Forming, Toxic Formine and Flammable Materials EFCI's mining <br />and related activities will not result in production of and acid or toxic forming materials. The <br />only materials to be placed in surface disposal sites include development overburden from <br />the portal bench face-up area, coal stockpile base material from the loadout sites, and coal <br />processing refuse which is placed in the permanent refuse stockpile. Documentation <br />supporting the contention that these materials are non-toxic and non-acid forming is <br />• presented in Exhibit 9, Comparison of Refuse and Soil Suitabilities. <br />As discussed in Section 2.05.3, Operation Plan -Permit Area, under the subheading <br />"Disposal of Coal and Non-Coal Wastes", all garbage, wastepaper, scrap and other refuse <br />materials, other than coal processing refuse, are collected and disposed of in trash containers <br />or in a designated scrap yard on the mine site. These materials aze periodically collected by <br />salvage or disposal contractors and hauled off-site for salvage, or disposal in a municipal <br />landfill. Liquid wastes, including waste oil and lubricants, are collected in closed steel drums <br />within the mine shop/warehouse azea and full drums are periodically collected and hauled <br />off-site for recycling or disposal by a contractor. <br /> <br />TR-34 2.05.4-27a Revised 8/02 <br />