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Assessment of Adequacy of Revegefation <br />Cover and production values observed will be compared to technical standards that are <br />included in the permit documents. Shrub density values in the three shrub enclosure <br />sites will be compared to a standard of 750 stems per acre. <br />Given the very small dimensions of the areas being assessed at this site, the sample <br />sizes are small. For the three shrub enclosure areas, the samples taken will be grouped <br />together and a measure of sample adequacy made using the CDMG-specified formula: <br />(st)z <br />nmin = <br />(dXcar)Z <br />where: <br />nm;n =the number of sample points needed in a given vegetation type to be capable of detecting a <br />10% reduction in the mean with 90% confidence; <br />s =standard deviation (n-1 ); <br />t = Table t statistic (one-tailed, 90% confidence; n-1 degrees of freedom) <br />d = 0.1; <br />x°ar=arithmetic mean <br />Means for cover, production and shrub density will be compared to 90 percent the <br />applicable technical standard by use of a one sample t-test, at 90 percent confidence as <br />specified in CDMG guideline. <br />Species diversity assessment will be made as per requirements of the permit. <br />6/27/04 4 ESCO Associates Inc. <br />