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V. BackfillinQ and Gradine <br />A. The applicant has demonstrated that the fill used to eliminate the highwall and <br />depressions meets all the requirements of 4.05, 4.06, 4.09 and 4.15. Therefore, the <br />Division proposes to approve that excess material not required for highwall and other <br />depression backfill need not be returned to approximate original contour (4.14.1(2)(c)}. <br />B. The Division proposes to approve the method and design specifications for covering of <br />acid-and toxic-forming materials in order to prevent leaching into surface and ground <br />water and to insure backfill stability (4.14.3(2)). <br />VI. Reve¢etation <br />The permit azea includes three defined vegetation types including a pinon-juniper/mountain <br />shrubs mosaic, a dry cropland area and a previously disturbed "old field" community. <br />Baseline data collection has been performed on all three areas, and is included in Section <br />2.04.10 of the permit application. <br />The reclamation plan with respect to revegetation is discussed in Section 2.05.4(2)(e)(i) of <br />the permit application. The Division has approved the use of introduced species and finds <br />that they will be compatible with the post-mining land use. Straw mulch will be utilized after <br />seeding to control erosion prior to vegetation establishment. On steeper slopes, fabric netting <br />will also be used in conjunction with the straw mulch. <br />Methods to measure vegetation cover, production and woody plant density and success aze <br />to be revised and aze part of Stipulation 7 mentioned eazlier in this findings document. <br />Species diversity will be: <br />Two perennial warm season grasses, and one perennial forb, all contributing at least 30 <br />percent relative cover but not greater than 40 percent relative cover. Woody plant density <br />is under revue due to the change in land use. With adherence to these standards, the <br />operation will be in compliance with the vegetation requirements. <br />VII. Post-mining Land Use <br />A. The Division has approved an alternative post-mining land use of industrial, cornmercial, <br />and residential which is to be implemented within two years after the conclusion of <br />mining. If the land use change is not implemented within the two year timeframe, then <br />the old land use of range land, wildlife habitat and dryland farming will be implemented. <br />The land-use meets the criteria of Rule 4.16.3. <br />20 <br />