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3F— (0.9 * technical standard) <br />te _ <br />X60 <br />i _ 554.4-90 — 2.99 <br />talc — 853.9 <br />1 30 <br />Since critical t = 0.854 (one - tailed, alpha = 0.2, 29 df) and t, is greater than this critical value, the <br />hypothesis of no difference is rejected and reclamation success for BRB -5 background woody plant <br />density under Phase III is demonstrated. <br />A reverse t -test of the assertion that the 2011 BRB -5 Concentration Area woody plant density is <br />indistinguishable from 90% of the standard is as follows: <br />tc = F— (0.9 * technical standard) <br />�V —) <br />2035.6 — 900 <br />tca l` — 1303.1 = 5.62 <br />( 5 <br />Since critical t = 0.854 (one - tailed, alpha = 0.2, 29 df) and t, is greater than this critical value, the <br />hypothesis of no difference is rejected and reclamation success for BRB -5 woody plant concentrations <br />areas under Phase III is demonstrated. <br />SPECIES DIVERSITY AND COMPOSITION <br />With regard to Mandatory Test A, that no single species comprise greater than 60% relative cover in <br />2011 BRB -5, Table H -1 shows that the most abundant single species (intermediate wheatgrass) was <br />25.88% relative first -hit cover, below the 60% threshold of concern. <br />Hence Mandatory Test A is passed. <br />23 <br />