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• 2.2.7 EP042 <br />EP042 is comprised of 21.03 acres of moderately sloping revegetation that has a predominately <br />northeasterly aspect. This unit was seeded in 2002 and therefore, has undergone a single growing <br />season prior to sampling in 2003. A total of 21 plant taxa were observed in the unit (see Table 19). <br />Seedling emergence data (Table 16 and 54) from 50 quadrets revealed that there was an average of <br />0.36 perennial seedlings per square foot. Of this density of emergents was 0.28 per square foot <br />attributed to shrubs while the remaining 0.08 was from perennial grasses and forts. Annual speces, <br />espedally field pennyaess and Russian thistle, dominate the emerging floral community of this unit with <br />an average of 2.54 seedlings per square foot, but these species should be readily displaced over the next <br />one to two years as the perennials begin to mature and exert their dominance. Woody plant density was <br />documented from the 50 quadrats with an estimate of 12,197 shrub seedlings per aue (Table 17), with <br />big sagebrush and mountain snowberry (Symphoncarpas oreoph/lus) the two dominant woody plants. As <br />indicated in Sectlon 2.2.5, one perennial seedling per square foot is considered modest, and less than this <br />density is typically poor emergence. However, given the effort to favor shrub establishment by limiting <br />the grass and fort component of the community, it appears following one growing season, that the <br />• potential for success is very encouraging. Another two or three years of positive development will be <br />required before success can be determined with a higher degree of probability. <br />Noxious weeds and annual bromes appear tb be controlled in this unit. Because it appears this was <br />an area without topsoil placement and the unit receNed ashrub-dominated seed mbc, seedling <br />emergence can be considered very good. Given adequate predpitation and reasonable shrub seedling <br />survival, this unit should devebp as planned into a dense shrub patch given minimal wmpetltion from <br />herbaceous species. <br />C~ <br />rrw,nxon Energy Co. ~ caowyo Mine Page 29 Revegetatlon MonltoAng -2003 <br />