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northern sweetvetch, aspen peavine and scarlet globemallow. Commercially available shrub seed includes serviceberry, rubber rabbitbrush, chokecherry, current, woodsrose and big sagebrush. 3.3 DESCRIPTION OF VEGETATION TYPES Vegetation types within the Danforth study area are divided into two categories, native and agricultural. the most predominant type was the native type which comprised 99 percent of the entire acreage of the study area (Table 3.2). Agricultural types comprised 1 percent of the area. Six different native vegetation types were defined within the permit area. Their distribution is presented in the vegetation maps (Map 2.D in pockets). The most abundant type was mountain shrub. It comprised approximately 53 percent of the total study area. Sagebrush grassland comprised approximately 29 percent. Aspen comprised 13.6 percent of the area. A small area of Douglas fir comprised less than 1 percent of the area. Several small areas of Juniper comprised less than 1 percent of the area. Areas of native or improved haylands comprised approximately 1 percent of the study area. Several other vegetation types occurred along the proposed railroad corridors. A small area of riparian forest occurred along Wilson creek. Greasewood vegetation type occurred along the lower stretches of both Wilson and Good Spring creeks. Wheat and barley are planted in cultivated lands along the proposed Wilson and Good Spring creek railroad corridors. 3.3.1 Aspen The aspen vegetation type occurred primarily on northwest facing slopes at elevations above 7400 ft. Large continuous stands of aspen occurred along the upper portions of the West Fork of Good Spring Creek in sections 6, 31, and 32. In sections 19 and 20, aspen stands occurred on northwest facing slopes leading to the East Fork of Wilson Creek. Atypical view of the aspen 11 Exhibit 10, Item 5 Revision Date: 03/06/07 16 Revision No.: PR-02