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• cover or 30 production samples have been completed in BRB-3, sample adequacy has been <br />achieved and the reclamation area mean total herbaceous foliar cover and herbaceous <br />production are above 90% of the reference area-derived standard, an affirmative indication of <br />reclamation cover success will be asserted. <br />If: The mean herbaceous cover or production of an adequate sample from BRB-3 was less than <br />90% of the cover standard (see above), then aone-sample t-test was made in the following form <br />to test the hypothesis of reclamation success for cover (CDMG 2003 proposed rules revisions, <br />4.15.11 (2)(b)): <br />t _Q-x <br />` S- <br />x <br />Where: <br />x <br />Q =Bond Release Block Sample Mean <br />= 90% <br />f St <br />d <br />d <br /> o <br />an <br />ar <br /> <br />Sx ~ <br />=Standard error of mean [s / yn ] <br /> <br />S =Sample standard deviation <br />n =Sample size <br />k = Calculated t value <br />~ = Table t value <br />The null hypothesis being tested was that the bond release block mean (µ) was greater than or <br />equal to 90% of the standard, stated as H°: µ >_ Q. If tc was less than or equal to the 1-tailed t <br />table value for alpha error probability of 0.10, at (n-1) degrees of freedom (infinite degrees of <br />freedom may be used if n>30), then H° was not rejected, and revegetation was deemed <br />successful for the parameter tested. <br />If: Sample adequacy for herbaceous cover or production has not been achieved in BRB-3 and a <br />total of 30 or more samples have been taken, and the means for total herbaceous foliar cover or <br />herbaceous production in the BRB reclaimed area exceed 90% of the reference area-derived <br />standard, then the hypothesis of reclamation success is tested under the conditions a "reverse <br />7 <br />