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0 0 0 <br />v.8.6.005. ma. 0.01 EPA <br />OUTLIER <br />ANALYSIS <br />Mean= 50.93 after <br />outlier removal 54.46. <br />Std. Dev. = 39.5, after <br />outlier removal 38.74. <br />Critical Tn = 2.371 <br />after outlier removal <br />2.331. <br />Statistical outliers <br />are shown as solid squares. <br />Data, after outlier removal, <br />were found to be log -normally <br />distributed. <br />Normal" test used: <br />Shappiro Wilk. <br />W �tatistac = 0.9463 <br />W Quantile = 0.866 <br />Feb 1997 Jan 2002 Nov 2006 <br />Note: EPA guidance directs that statistical outliers should not be removed or altered unless independent evidence of an <br />error exists. <br />Constituent: Chemical Oxygen Demand [COD] (mg/L) Facility: Austin Road LF Data File: AUSTININ <br />Date: 1/8/07, 6:20 PM Client: Austin Road LF View: —Batch— <br />)::]H(EST & ASSOCIATES, INC. <br />