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Sample adequacy will be calculated for vegetation cover and herbaceous <br />production sampling. Parameters will be tested at the 90% confidence level. <br />Confidence levels achieved for each parameter will be calculated and reported. <br />Final Revegetation Success Standards <br />Fina! revegetation success will be judged for vegetative cover and herbaceous <br />production through the use of the approved Osgood reference area. Species <br />composition will be evaluated using the approved success standards. <br />Quantitative comparisons for vegetation cover and herbaceous production will be <br />made using the Student's t-test or Confidence Interval test. Reclaimed area cover <br />and herbaceous production values will be evaluated for statistical equality to the <br />Osgood reference area if the reclaimed area values do not equal or exceed the <br />reference area values. Species composition will be judged on meeting the species <br />composition standard. <br />Total vegetation cover. Reclaimed areas will be considered successfully reclaimed <br />if the total vegetation cover on the reclaimed area is not less than 90 percent of the <br />toia] vegetation cover of the Osgood reference area with 90 percent statistical <br />confidence with aone-tailed test. <br />• Herbaceous production. Reclaimed areas will be considered successfully reclaimed <br />if the total herbaceous production on the reclaimed area is not less than 90 percent <br />of the total herbaceous production of the Osgood reference area with 90 percent <br />statistical confidence with aone-tailed test. <br />Woody plant densitK There is no woody plant density revegetation success <br />standard. <br />Species composition. Reclaimed areas will be considered successfully reclaimed if <br />the species composition on the reclaimed area is such that there are at least seven <br />perennial species of which four aze warm season grasses and one is a forb. No one <br />component of the above species should comprise greater than 40% relative <br />importance nor less than 3% relative importance. Relative importance will be <br />measured by calculating relative cover of the revegetation species. Vegetation <br />species which may be used in the calculation of species composition may be any <br />plant species not defined as a noxious or prohibited plant species, and may be <br />native or introduced. <br /> <br />IIGb <br />