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taxa were cheatgrass, Russian wildrye, and shadscale with 24.8%, 7.0%, and 4.4% average cover, <br />respectively. <br />This unit passes the revegetation success criterion of 90% of the Shadscale Reference Area value <br />when both annual and perennial cover values are combined. It also passes when only perennial cover is <br />compared (Table 1). <br />The Substation B area currently passes three of the four diversity standards. The present relative <br />cover of perennial forbs or sub-shrubs and perennial cool-season grasses is sufficient to pass the required <br />minimum values, and there are no planted species with greater than 70% relative cover. Substation B <br />fails the diversity standard for total perennial warm-season grasses with only 0.0% relative cover. <br />Qualitative analysis indicates that this revegetation is in good condition overall. This unit exhibits <br />good shrub establishment and diversity of both shrubs and perennial grasses. <br />3.16 Greasewood Reference Area <br />The Greasewood Reference Area was established as a new area in 1999 and is located <br />approximately 1,500 feet northwest of the Cameo Refuse Disposal Area No. 1 along the east-facing <br />colluvial toe slope adjacent to the BLM Bookcliffs access road and the ephemeral drainage (Map 1). <br />Ground cover in this area consisted of 61.7% live vegetation, 0.8% rock, 27.5% litter, and bare soil <br />exposure of 10.1% (Table 3a). Perennial cover across the unit averaged 19.4% (down from 20.2% in <br />2006) with annual and biennial cover averaging 42.3% (down from 43.6% in 2006)). The dominant taxa <br />were cheatgrass, greasewood, filaree, and galleta (Hilaria jamesii) with 34.7%, 9.2%, 6.1%, and 3.4% <br />average cover, respectively. <br />3.17 Shadscale Reference Area <br />The Shadscale Reference Area is located near the Roadside South Portal on the west-facing slope <br />(see Map 1). Ground cover in this area consisted of 44.7% live vegetation, 28.3% rock, 20.6% litter, and <br />bare soil exposure of 6.5% (Table 3b). Perennial cover across the unit averaged 8.3% (up from 7.4% in <br />2006) with annual and biennial cover averaging 36.4% (down from 46.2% in 2006). The dominant taxa <br />were cheatgrass, filaree, and shadscale with 32.0%, 4.1%, and 3.5% average cover, respectively. <br />CEDAR CREEK ASSOCIATES, Inc. Page 25 Snowcap Coal Co. - 2008 <br />Revegetation Evaluation