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slender wheatgra ss, and squirreltail (Sitanion hystrix). Fo rbs occurring in this type . <br />included scarlet globemallow (Sphae ralcea coccinea), Engelmann fleabane (Erigeron <br />enge lmanii), western yarrow (Achilles lanulosa), Lewis flax (Linum lewisii), tapertip <br />onion (Allium ac umi na tum), and cu rlycup gumweed (Crindelia squarrosa). Annual species <br />include Japanese brome (Bromus japonicus), tumbling mustard (Sisymbrium altissimum), <br />fanweed (Th7aspi arvense), and Russian thistle (Salsola iberica). <br />The Greasewood type occurring in the proposed hual road corridor is quite variable with <br />regard to shrub densities. Because of the small area of the type, it was difficult to <br />accurately measure shrub densities. Four 50 m x 1 m transects were read in order to <br />provide some quantitative observations. Alkali sagebrush was the most frequently <br />occurring shrub making up over 70 percent of the shrubs counted in the transects. Black <br />greasewood constituted 22 percent of the shrubs counted with rubber rabbitbrush making up <br />the remaining 5 percent counted. Small amounts of Douglas rabbitbrush and. broom sna keweed <br />also were present but did not occur in the transects. Shrub heights for black greasewood <br />ranged from 12 cm to 115 cm, alkali sagebrush ranged from 10 cm to 50 cm, and rubtier <br />rabbitbrush had a shrub height range of 15 to 70 'cm: Shrub densities averaged 72 <br />stems/SOmz or 5,827 stems/acre. <br />The range site for the Greasewood type as determined by the soils present and species <br />composition is Alkaline Slopes. This site can occur on gently Sloping benches as is found <br />on the type. Range condition for the type was estimated to be fair. <br />At this time, none of the greasewood type is used for grazing. The type is either <br />bordered by wheat fields and roads in areas too small to be managed, or is not fenced for <br />grazing management. <br />The area to be disturbed in this type is approximately 11 acres and is insignificant in <br />relation to the approximately 185 acres to be disturbed along the entire haul road <br />corridor. <br />Additional Types Associated with the 1989 Realignment. <br />Mountain Big Sagebrush. Approximately 4.6 acres of the mountain big sagebrush type occurs <br />in the far eastern end of the haul road corridor (see revised Exhibit 10-2 and Table <br />10-2 ). The dominant species is mountain big sayebru sh with a vari et.y of herbaceous <br />.8 <br />