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C~ C 2.2.6 EPO41 EP041 is comprised of 30.8 acres of moderately sloping revegetation that has a predominately northerly aspect. This unit was seeded in 2003 and therefore, has undergone two growing seasons prior to sampling in 2005. A total of 27 plant taxa were observed in the unit (see Table AB-1). Ground cover in EP041 consisted of 56.9% live vegetation, 03% rock, 34.8% litter, and bare soil exposure of 8.0%. Perennial cover across the unit averaged 16.7% with annual and biennial cover averaging 40.2%. The dominant taxa were field pennycress, cheatgrass, and slender wheatgrass with 14.5%, 9.6%, and 4.3% average cover, respectively. Woody plant density was determined from 15 belt transects. Density (Table 2) totaled 0 young and mature stems per acre. With regard to diversity, EP041 exhibited 4 perennial grasses and 0 perennial fortis with between 3% and 50% relative cover. 3 8 a 9 a3 s io as .. 6 1] ~ 15 .. ] .: Mae ] - EV041 ,~ ._ _ 3~ "~-°T vreeb~ionv~~~Wm romz~r+eo~c-mos zaps vmWry vam ~.m.r.m..~ __...__-_ CM Stre: 3W ~ 3W popu a ions are airy su ue uni wi e. ome medium to large cheatgrass patches appear along the northeastern border with older revegetation. Although cover by the early-seral species, such as field pennycress, is elevated, ground cover by perennials appears sufficient to progress to dominance over the next few years. Overall, Unit EP041 exhibits good diversity and perennial cover levels for two- yearold revegetation and should be monitored again in 2007 (fourth growing season). Noxious weeds appear to be well controlled in this unit and the annual bromes I Y f' I bd d 't- 'd S Kennecott Energy Co. ! Cobwyo Mine Page 17 Revegetation Monitoring -2005