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Cover <br />To demonstrate Phase II Revegetation success, allowable percent absolute (foliar) all hit <br />herbaceous vegetation cover of the 2010 Phase 11 BRB must be greater than or equal to 90% of <br />the weighted absolute (foliar) all hit herbaceous vegetation cover from the reference areas. <br />(Weighting proceeded in accordance with the 24.4 % original extent of Aspen / 48.9% original <br />extent of Mountain Brush / 24.0% original extent of Sagebrush /Snowberry/ and 2.7% original <br />extent of Steep Mountain Brush. Cover by noxious weeds was not allowable. Cover by <br />annual /biennial plants in excess of 10% relative cover was also not allowed. <br />The Aspen, Mountain Brush, Sagebrush /Snowberry, and Steep Mountain Brush Reference Areas <br />were sampled to adequacy to establish the standards for comparison against reclaimed area <br />values. If, after 15 cover samples were completed in the 2010 Phase II BRB, sample adequacy <br />has been achieved and the reclamation area mean total herbaceous foliar cover are above 90% <br />of the reference area - derived standard, an affirmative indication of Phase II reclamation cover <br />success was asserted. <br />Were, after gathering 15 or more samples from the BRB, the mean allowable herbaceous cover <br />of the BRB to be greater than the reference area standard, then the hypothesis of reclamation <br />success would be tested using a parametric test of the "reverse null" hypothesis. This would be <br />conducted using the following expression (CDMG 2005 revised rule, 4.15.11 (2)(c)): <br />x -Q <br />t - <br />S <br />x <br />Where: x = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S- = Standard error of mean [ s / ' <br />S = Sample standard deviation <br />n = Sample size <br />t� = Calculated t value <br />t = Table t value (alpha = 0.2) see Rohlf and Sokal (1969) <br />The (reverse) null hypothesis being tested would be that the bond release block mean (µ) was <br />less than or equal to 90% of the standard, stated as H p <_ Q. If t. was greater than the 1- tailed t <br />