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1 VEGETATION SAMPLING FOR 1996 <br />' METHODS <br />Vegetative cover was sampled on July 23 through 26, 1996 using 50-meter point-intercept <br />transects. The reclaimed areas and the reference area were sampled separately. Sampling <br />' transects for all areas are provided on Figure 1. <br />Generally, a minimum of ten transects were analyzed in each of the larger reclaimed areas and <br />' three in the smaller reclaimed areas that had less than three acres. Sample adequacy was <br />calculated in the field from the corresponding data sample set using the Snedecor-Cochran sample <br />adequacy formula (Equation 1). Sample size was determined as sufficient if the calculated M;R <br />' value was below the number of samples collec[ed and if the sample standard deviation was not <br />excessively variable. The results of the data collection revealed an extremely homogenous <br />vegetative composition and therefore was representative of the entire reclaimed tract. <br />' (1) <br />' Min - (t's`)-(dX)- <br />' where: <br />~~;,, =the minimum number of observations needed, <br />t =the t-table value for aone-tailed [-test with (n-1) degrees of freedom at the 90% <br />confidence level, <br />1 s' =the sample variance, <br />' d = .1 (level of precision for estimate of the mean to be within 10% of the actual <br />mean), and, <br />' z =sample mean. <br />Transects were randomly located and oriented in each area. Transect locations or orientations that <br />resulted in overlap of previous transects or the sampling azea boundary were randomly redirected <br />prior to the point of overlap. <br />' Data from the transects were used to determine sample size adequacy. Sample size adequacy was <br />reached in all areas prior to completion of sampling. Adequacy results are as follows: <br />1 <br />' RvnN.n$a'•Maf[n 19. 199] A-1 <br />