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was 44.8 acres, or approximately 10.6% of the BRB PSCM-2 Phase III bond release block (422 <br />acres). Hence the standard that there would be at least 5% of the Phase III BRB block with at <br />least 2,000 stems per acre (90% of the standard equals 1800 stems per acre) has been met for <br />2014. <br />A t-test using the "reverse null hypothesis" asserting that the 2014 BRB PSCM-2 Phase III <br />background woody plant density is greater than 90% of the standard is as follows: <br />tG = x — (0.9 * technical standard) <br />ks <br />;.. `) <br />tc,ac = (510 — 180) / (951 / X32) = 1.962 <br />Since critical ttable = 0.854 (one -tailed, alpha = 0.2, 31 df) and te,ie of 1.962 is greater than this <br />critical value, reclamation success for BRB PSCM-2 Phase III background shrub density in 2014 <br />is demonstrated. <br />A reverse t-test asserting that the 2014 BRB PSCM-2 Phase III concentration area woody plant <br />density is indistinguishable from 90% of the standard is as follows: <br />tG = x — (0.9 - technical standard) <br />( } <br />`ti�1 <br />tc,lc = (2513.1 —1800) / (2043.7 / X53) = 2.540 <br />Since critical t�abie = 0.849 (one -tailed, alpha = 0.2, 52 do and te,ie of 2.540 is greater than this <br />critical value, reclamation success for Phase III concentration area woody plant density in 2014 is <br />demonstrated. Also note that the woody density concentration area in which adequate density <br />has been demonstrated occupies over 22 percent of BRB PSCM-1, well exceeding the minimum <br />requirement of 5 percent. <br />Successful revegetation for the parameter of woody plant density in both the background <br />and concentration areas was demonstrated in both 2012 and 2014. <br />Species Diversity. PSCM bond release requirements for species diversity are judged using the <br />