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rock produced was approved for placement against the existing tiighwall of the SA <br />Portal. Designs for this development rock placement are included in Exhibit 40. The <br />total volume approved for placement is 12,000 cubic yards. <br />The applicant will dispose of underground development waste within the existing No. 9 <br />Portal incline excavation. These portals have been sealed. The aipproved reclamation <br />plan calls for the backfilling of the existing excavated incline. The applicant will utilize <br />[he excavation to dispose of waste. Because there would be no elevated embankment, <br />slope stability is not a concern. Minimal ground waters might invade the <br />unencapsulated waste but aze projected to produce insignificant amounts of leachate. A <br />monitoring well will be installed at the Portal 9 refuse area to monitor potential ground <br />water within 90 days of final grading of the Portal 9 refuse area. <br />A plan for post-mining topography was approved as a portion of original Permit No. <br />C-81-044 for the Williams Fork Strip Pit No. 2. The approved configuration requires <br />the regrading of approximately 240,000 cubic yards of spoil. Th~~ applicant was allowed <br />to postpone final grading, because the installation of a second sef. of portals for the No. 9 <br />Mine was proposed at this location. These portals, Nos. 9A, were never installed. <br />Backfilling and grading of the Williams Fork Strip Pit No. 2 conunenced August 10, <br />1987. Initial seeding occurred that fall. <br />VIII. Revegetation <br />Pre-mine vegetation information is provided in Section 2.04.10. Additional information <br />is provided in Exhibit 14, Supplemental Vegetation Information. Vegetation <br />communities aze shown on Map 20 -Vegetation Map. Section 2.05 of the permit <br />application describes the revegetation methodology and revegetation standards for each <br />type of disturbed area. The Williams Fork Strip Pit revegetation plans and revegetation <br />success criteria are given in Exhibit 24, Williams Fork Strip Pit Reclamation Plan. The <br />Reclamation Plan Map (Map 29) indicates the planned post-mine; uses (vegetation types) <br />and the reference areas for the reclaimed areas. <br />A vegetation inventory was conducted at the Eagle Mine Complex in July of 1981. The <br />operator sampled three undisturbed big sagebrush stands adjacent to the surface <br />disturbance. The vegetation sample areas were similar in aspect, elevation, and soils to <br />the disturbed areas. The information collected in that study is located in Section 2.04 of <br />the permit application. No threatened and/or endangered plant species were identified <br />within the disturbed area during the vegetation inventory. <br />Roughly one-third of the permit area is covered by croplands. REC has divided the <br />croplands into two categories: 1) irrigated hayfields in the Williams Fork River bottom <br />areas, and 2) dryland wheat, found on cleared hillsides which were once sage- <br />dominated. Productivity data is provided for the irrigated hayfields on Table 69 of the <br />permit application. Wheat production is given in Table 70. <br />REC's approved reclamation plan calls for reclaiming the surfacr: disturbed areas to the <br />following four post-mining land uses: rangeland/wildlife habitat, hayfields, dryland <br />29 <br />