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required spoil monitoring over the course of reclamation of the disturbed areas, and no <br /> acid-forming or toxic-forming materials were identified. <br /> VIII. Revegetation <br /> Information pertaining to revegetation at the Yoast Mine is found in Tabs 10, 19, and 22 of <br /> the permit application package. <br /> Five major vegetation community types occur within the Yoast permit area. These major <br /> vegetation community types are: Mountain Brush, Sagebrush, Aspen, Steep Mountain <br /> Brush, and Western Wheatgrass/Alkali Sagebrush. Additional community types occur <br /> within the permit area but at considerably smaller acreages. These additional vegetation <br /> types include: Upland and improved sub-irrigated pasture, mesic drainage, lands in the <br /> Conservation Reserve Program, Cropland, Alkali Sagebrush/Greasewood, and Alkali <br /> Meadow. <br /> Baseline vegetation data was collected during June 1990 and July 1992. Sampling was <br /> performed in accordance with the Regulations and was discussed with the Division prior to <br /> data collection. <br /> Seneca Property, LLC is approved to use five permanent reclamation seed mixes and one <br /> temporary seed mix. Seed mix IA was used throughout the majority of the reclaimed area <br /> and has been formulated to reestablish an Upland Shrub Grassland. This seed mix is <br /> weighted towards perennial cool season grass species, with perennial forbs and shrub seed <br /> included as well. All of the species included in the seed mix are native, with the exception <br /> of Orchardgrass and Alfalfa. These two species have been included to enhance forage <br /> utility, improve legume presence in the stand, and help establish cover. Neither species is <br /> considered poisonous or noxious. Both are desirable to achieve the post-mining land-use. <br /> (Rule 4.15.2). A variation of Seed mix IA was used along the haul road corridor and has <br /> been modified as Seed Mix 1B to correlate with the Sagebrush Grassland vegetation type <br /> found within the haul road vicinity. <br /> Concentrated narrow areas with higher moisture regimes were seeded with Seed Mix No. 2 <br /> developed for Mesic Drainage and subirrigated Sites. This seed mix was used to <br /> reestablish riparian areas and mesic sites, and may be utilized around permanent ponds. <br /> This seed mix is comprised entirely of native species. Seed Mix No. 3 has been developed <br /> for utilization in localized alkaline conditions. These conditions may be encountered along <br /> the haul road corridor. Seed Mix No. 4 has been formulated to establish quick soil <br /> stabilizing cover on locations that are temporary in nature. Temporary locations would <br /> include topsoil stockpiles and roadside disturbances. Seed Mix No.5 has been developed <br /> for concentrated shrub establishment areas. Seneca Property, LLC's experience at adjacent <br /> mines has shown that higher survival rates in concentrated shrub seeding areas have been <br /> achieved by suppression of herbaceous competition within the concentrated areas. <br /> Accordingly, Seed Mix No.S contains only native shrub species. Seneca Property, LLC <br /> will use mechanical or chemical means to reduce herbaceous plants within the <br /> concentrated shrub areas until such a time that the shrubs are determined to be able to <br /> compete. <br /> Seneca Property, LLC has stabilized soil prior to permanent vegetation establishment <br /> 23 <br />