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Table 7 Colowyo - Success Testing - 2008 <br />Pass <br />Phase III - Bond Release <br />Phase III <br />STANDARDS <br />Vegetation Cover <br />Perennial Mean (.7 65.8 <br />Standard ( Q = 55 Mountain Shrub + 45% Sagebrush) 45.9 <br />90% of Standard 41.3 <br />Number of Samples (n) 30 <br />Standard Deviation (s) 11.64 <br />Calculated t- statistic It*= lx- 0.9Q) /(s&n 1 11.54 <br />Tabular value fort (0.9,n-1) One Tailed t - Test 1.31 <br />Production <br />Perennial Mean (7 <br />Standard (Q = 55% Mountain S hrub + 45% Sagebrush) 90% of Goal Number of Samples (n) S tan d a r d Deviation (s) Calculated t- statistic it *= (z- 0.9Q) /(s�)� Tabular value fort 0.9 n -1 One Tailed t - Tes[ <br />n47 <br />Diversity (species with between 3% - 50% Relative Cover) <br />Perennial Grass Species <br />Standard <br />7 <br />2 <br />Perennial Fort, <br />Standard Relative Cover between 1% and 50% <br />22.1% <br />1% :5650% <br />Woody Plant Density <br />Shrubs per Acre <br />Standard <br />150.0 <br />Percent of Acrea that has a Shrub Population <br />Standard <br />8.4% <br />%Z <br />c= combined total composition or relative Cover for all perennial forbs (non - noxious) <br />Cedar Creek Associates, Inc. Page 27 Colowyo Mine <br />Phase III Bond Release Evaluation <br />