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(#species /100 square meter) <br />* In the cumulative presence data from 2 m x 50 m samples associated with the collection <br />of a statistically adequate reclaimed area sample (based on the cover samples), and <br />including alfalfa and/or cicer milkvetch, included in seed mixes as nitrogen—fixers and <br />protein forage. <br />If the total cumulative number of native species in the reclamation sampling exceeds the average <br />number of native species per 100 square meter using weight averaged reference area sampling, <br />then Test D is passed. <br />2012 Species Diversity Success Evaluation <br />Assessing Mandatory Test A (no single species comprises greater than 60% relative cover), the <br />data (Table I-1, vegetation report in Attachment D) shows that the most abundant single species <br />in the BRB PSCM-2 reclaimed area was alfalfa (Medicago sativa) with 18.11 % relative first hit <br />cover which is below the 60% threshold value. Hence Mandatory Test A is passed. <br />To assess Alternative Test B. Total Species Density (probability -adjusted density standard), the <br />following test is calculated for 2012 BRB PSCM-2 data (Table I-2, vegetation report in <br />Attachment D): <br />meter <br />Mean Species density (area -weighted from the reference areas) = 28.4 species/100 square <br />Mean Reference Area Species Density —1.15 s = 28.4 —1.15 (4.07) = 23.72 <br />Mean total species density in the 2012 BRB PSCM-2 Phase III sample = 23.51 <br />A classic t-test asserting that the BRB PSCM-2 Total Species Density is indistinguishable from <br />90% of the standard is as follows: <br />tCC:C = <br />Probability adjusted density standard — x <br />S <br />t,,, = (23.72 — 23.51) / (5.84 / 435) = 0.213 <br />