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9-92 <br />Canyon Mine permit area. Additionally, Big Sagebrush is also <br />• present within the permit area on deep soil sites that are <br />less salty. <br />Figure 4.5-15 illustrates the vegetation types of the permit <br />revision area while Table 4.5-25 indicates the total acreages <br />of each type within the permit revision area and lists acreages <br />on each type potentially affected by the proposed development. <br />Each of the vegetation types within the permit revision area <br />are described in the following sections from data collected <br />during the 1980 and 1981 growing seasons or from qualitative <br />observations. <br />4.5.2.2.1 Greasewood Shrubland <br />The Greasewood Shrubland vegetation type occurs in the saline <br />soil habitats on relatively flat topography along East Salt <br />• Creek. The major soil types for the vegetation type are Glen- <br />dive loamy sand, a deep, well-drained soil; the Billings silty <br />clay loam, a deep, moderately well-drained, saline soil; and <br />the Nihill gravelly loam, a deep, well- to excessively well- <br />drained, non-saline to strongly saline soil. <br />Cover <br />The vegetation cover in the Greasewood Shrubland vegetation <br />type averages 63.2 percent. Soil and litter cover are moderate <br />at 16.2 and 17.1 percent, respectively, while rock cover is <br />low at 3.5 percent. Absolute cover by life form is as follows: <br />trees, 0.1 percent; shrubs, 20.1 percent; succulents, 0.4 per- <br />cent; perennial graminoids, 0.7 percent; annual graminoids, <br />33.1 percent; perennial forbs, 0.8 percent; and annual forbs, <br />7.9 percent. See Table 4.5-3S. <br />Greasewood Sarcobatus vermiculatus, the dominant shrub, has a <br />• cover of 14.5 percent while big sagebrush artemisia tridentate, <br />