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and Yellow Sweetclover which contributed 18.74, 15.94, 11.73, 5.60 and 5.60 percent, <br />respectively, of the total relative cover found on this site. <br />When sampled in 2006, Perennial grasses dominated the seeded vegetation on this site <br />contributing 21.07 percent of the vegetative cover or 68.11 percent of the total relative cover on <br />this site. Western Wheatgrass, Sand Dropseed, Blue Grama and Side -Oats Grama were the most <br />commonly encountered grasses, contributing 31.91, 10.99, 8.19 and 7.97 percent, respectively, <br />of the total relative cover found on this site. Perennial forbs contributed 4.20 percent of the total <br />cover and 13.58 percent of the total relative cover on this site. Cicer milkvetch was the most <br />commonly encountered perennial forb on this site, contributing 6.90 of the total relative cover. <br />Shrubs and subshrubs contributed 7.97 percent of the total relative cover on this site. Rubber <br />Rabbitbrush was the most commonly encountered shrub, contributing 6.68 percent of the total <br />relative cover on this reclaimed site. <br />Upon comparing the data between the two sampling periods, it appears that the greatest changes <br />in the vegetation are associated with an increase in perennial grass cover from 21.07 percent of <br />the total vegetative cover or 68.11 percent of the total relative cover on this site to 36.70 percent <br />and 64.27 percent respectively. Shrub cover has increased from 7.97 percent of the total relative <br />cover on this site in 2006 to 19.09 percent of the total relative cover in 2010. <br />The final revegetation success standard for plant cover for this site is to be based upon a <br />weighted average from the sampling of the two reference areas. However, based upon the <br />historic sampling of the Grassland Reference Area, where sample adequacy was obtained in <br />1987 and 1997 yielded a value of 40.50 percent. Ninety percent of this value would be 36.45 <br />percent. The total cover value obtained from the 2010 reclamation sampling of 57.10 percent is <br />greater than the probable revegetation success standard and thus it appears that this site is on <br />track to satisfying the final revegetation success standard with respect to total plant cover. <br />The locations of the 10 cover transects sampled on this site are shown on Map 1, Southfield <br />Mine Area - Vegetation Transect Location Map. Table 2, Southfield Mine Sample. Adequacy <br />Calculations, reveals that the plant cover on this site at the 90 percent confidence interval was <br />determined to equal 8.5 transects. <br />Production. The results obtained from the 10 production transects sampled on this site in 2010 <br />are presented in Table 7, Corley Reclamation - Production. The average total production on this <br />site was determined to equal 39.38 g/1 /4m or 1,403.5 pounds of air-dry forage per acre. <br />Perennial grasses contributed an average of 31.56 g/1 /4m or 80.14 percent of the total forage <br />production. Perennial forbs, contributed an average of 4.71 g/1 /4m or 11.96 percent of the total <br />production. Annual forbs contributed a total of 3.11 g/1 /4m or 7.90 percent of the total <br />production. <br />When sampled in 2006, the total herbaceous production averaged 19.12 g/1/4m 681.4pounds <br />of air -dry forage per acre. Perennial grasses contributed an average of 14.79 g/1 /4m or 77.4 <br />percent of the total forage production. Perennial forbs, contributed an average of 1.99 g/1 /4m <br />or 10.4 percent of the total production. Annuals contributed a total of 2.34 g/1/4m or 12.2 <br />9 <br />