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nmin = (t 2S 2) / (0.1 X )2 <br />where: n = the number of actual samples collected (initial size = 10) <br />t = the value from the one - tailed t distribution for 90% confidence with n -1 <br />degrees of freedom; <br />S2 = the variance of the estimate as calculated from the initial samples; <br />x = the mean of the estimate as calculated from the initial samples. <br />If the initial samples do not provide a suitable estimate of the mean (i.e., the inequality is false), <br />additional samples would be collected until the inequality (nmin <_ n) becomes true. <br />CEDAR CREEK ASSOCIATES, Inc. Page 8 Munger Canyon - Loadout - 2013 <br />Revegetation Monitoring <br />