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Exhibit E <br />performance. <br />• Permanent Rangeland <br />Permanent rangeland seed mixtures will be used to establish vegetation communities on reclaimed areas. <br />Permanent rangeland seed mixtures will contain a variety of cool and warm season grasses, forbs, and <br />sub-shrubs. Two variations of the permanent vegetation seed mixture will be used at the Red Rock Mine, <br />including upland prairie and prairie Swale. The upland prairie variation will be used on reclaimed lands in <br />upland areas that fall outside of drainage swales (see post-mining topography). A typical upland prairie <br />mixture is presented in Table 4 Permanent Vegetation Seed Mixture The upland prairie variation of <br />this seed mixture will include a large variety of cool-season grasses, warm-season grasses, forbs and sub- <br />shrubs. Initially, the pure live seed composition of the upland prairie seed mixture will be approximately <br />30% to 3S% cool-season grasses, 30 to 3S% warm-season grasses, 20% to 25% forbs and 1S% to 20% <br />sub-shrubs. These life form compositional percentages are general targets only and may be adjusted as <br />permanent vegetation establishment efforts are monitored and evaluated at Red Rock Mine. <br />The prairie Swale seed mixture will be used in drainage swales that will be reconstructed in reclaimed <br />lands during the backfilling and grading process. A typical prairie Swale seed mixture is presented in <br />Table 5 Permanent Vegetation Seed Mixture Prairie Swale. The drainage Swale variation of the <br />permanent vegetation seed mixture will include a lazge variety of cool-season grasses, warm-season <br />grasses, forbs and sub-shrubs. With regard to life forms, the pure live seed composition of the prairie <br />Swale seed mixture will be similar to the upland prairie mixture. The seed mixtures will vary in that an <br />emphasis will be placed on cool and warm season rhizomatous grass species, with a reduced emphasis on <br />forbs and sub-shrubs. These life form compositional percentages are general targets only and may be <br />adjusted as permanent vegetation establishment efforts are monitored and evaluated at Red Rock Mine. <br />• Shrubs and trees may be added to the permanent rangeland seed mixtures when disturbed lands are <br />reclaimed that have the potential to support woody plant species. Steeper slopes (>Sh:ly) with northerly <br />aspects and rockier soils are best suited for shrub and tree establishment and growth. Slopes with these <br />aspects generally have reduced herbaceous vegetation, increase infiltration, lower evapotranspiration and <br />higher soil moisture availability, all which serve to promote woody plant species growth. Shrubs and trees <br />will be included in the permanent rangeland seed mixture when areas are reclaimed that have the potential <br />to support them. A typical augmentative shrub/tree seed mixture is provided in Table 1 Red Rock Mine <br />Potential Reclamation Species. The shrub/tree mixture will be applied at the pure live seed rate <br />indicated on Table 6. The shrub/tree mixture may be combined with the permanent rangeland mixture or <br />it may be seeded separately. <br />Timing of Seeding Operations <br />There are two generally accepted primary periods for conducting planting operations on azid and semi- <br />arid rangelands, including a fall and a spring planting period. When possible and practicable, seeding <br />operations will be conducted during these two general periods. Variations in timing of fall and spring <br />planting periods may be required [o obtain desired vegetation cover results. For these reasons calendar <br />dates for seeding and planting operations are not specified. Planting operations should be conducted <br />during the indicated seasons based on site-specific needs, moisture regimes and vegetation purposes. <br />Generally accepted and optional planting periods for the seed mixtures that can be used at the Red Rock <br />mine are provided in Table 7 Seed Mixture Planting Periods. <br />Plantings undertaken outside of these generally accepted time periods may not be successfully completed, <br />• particularly in the winter when inclement weather can preclude seeding operations. Success of seeding <br />1180-Mine Permit Exhibits Qu1.03.02)FINAL.doc E-9 <br />Iuly 3, 2002 <br />