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<br />1 , <br /> <br />2.2.7 EPO44 <br />EP044 is comprised of 24.6 acres of <br />moderately sloping revegetation that has a <br />predominately easterly aspect. This unit was <br />seeded in 2003 and therefore, has undergone <br />two growing seasons prior to sampling in 2005. <br />A total of 21 plant taxa were observed in the <br />unit (see Table AB-1). Ground cover in EP044 <br />consisted of 50.1% live vegetation, 0.6% rock, <br />39.4% litter, and bare soil exposure of 9.9%. <br />Perennial cover across the unit averaged 20.4% <br />with annual and biennial cover averaging <br />29.7%. The dominant taxa were field <br />pennycress, thickspike wheatgrass, cheatgrass, <br />slender wheatgrass, and streambank <br />wheatgrass with 21.8%, 6.7%, 5.4%, 4.5%, <br />and 4.0% average cover, respectively. Woody <br />plant density was determined from 15 belt <br />transects. Density (Table 2) totaled 0 young <br />and mature stems per acre. With regard to <br />diversity, EP044 exhibited 4 perennial grasses <br />and 0 perennial fortis with between 3% and <br />50% relative cover. <br /> <br /> <br /> <br />32 11 10 9 8 ~~ ~] <br /> .. <br />is Iq 1 3 <br /> <br />Md08-EP094 <br />v.o.ruo~ mmoii~e wmi mnon<-:oos <br />- <br />- <br />mos samq~m vane ...a ruo...e ..__ <br />-,._. <br />. <br />W YI: IItlv$AY 0 p, <br />populations are subdued unit-wide. Although <br />cover by the early-sera) species, such as field <br />pennycress, is elevated, ground cover by perennials appears sufficient to progress to dominance over the <br />next few years. Overall, Unit EP044 exhibits good diversity and perennial cover levels for two-year old <br />revegetation and should be monitored again in 2007 (fourth growing season). <br />Noxious weeds appear to be well <br />controlled in this unit and the annual bromes <br />Kennecott Energy Co. I Colovvyo Mine <br />Page 18 <br />Revegetation Monitoring - 2005 <br />