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Table 2 Blue Ribbon - 2007 <br />Phase III Revegetation Success Comparisons <br /> 2006 2007 <br /> <br /> Reference Reference <br />Ri <br />arian Area / Revegetated Area Area / Revegetated Area <br />p Standard Standard <br /> Value Value P <br />/ Value Value P <br />/ <br /> Fa I Fa I <br />Total Herbaceous Cover (excluding noxious weeds) <br />Estimated Mean (%) 46.48 52.55 45.80 59.40 <br />90% of Reference Area Mean 41.83 41.83 41.22 41.22 <br />Sample Size Collected (n) 15 20 PASS 15 20 PASS <br />Minimum Sample Size Necessary (n,,,,,,) <br /> 3.13 2.65 2.59 3.90 <br />reasion level 0.10, one-tailed test <br />Total Herbaceous Production (excluding noxious weeds) <br />Estimated Mean (Ibs./acre) 496.6 568.9 441.9 569.2 <br />90% of Reference Area Mean 446.9 446.9 397.7 397.7 <br />Sample Size Collected (n) 30 30 PASS 30 30 PASS <br />Minimum Sample Size Necessary (n,,,,,,) <br /> 16.28 13.25 20.80 24.96 <br />(I?<<cision level - 0.10, one tailed test) <br />Diversity <br />No. of Cool-Season Per. Grasses <br /> <br />(wdh between 3°/~ & 60'%, Reldtwe Cover) 4 6 4 4 <br /> <br />Perennial Forbs Relative Cover 3% 11.82% PASS 3% 16.53% PASS <br />No. of Shrub S ecies Observed 3 13 3 13 <br />Woody Plant Density (Young & Mature per acre) <br />Estimated Mean (stems/acre) 8,175 8,733 <br />90% of Standard (1,000) 900 900 <br />Sample Size Collected (n) 20 PASS 20 PASS <br />Minimum Sample Size Necessary (n,,,,,,) 6.23 3.00 <br />reci i n i v I- .1 on ailed test <br />CEDAR CREEK ASSGCIATFS, Inc. Page A - 2 Blue Ribbon Mine -Phase III Bond <br />Release Evaluation - 2007 -Appendix A <br />