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v.8.6.005. m.a.0.01 EPA <br />OUTLIER ANALYSIS <br />Mean= 81.54 after <br />outlier removal 84.01. <br />Std. Dev. = 95.82 after <br />outlier removal 96'.2. <br />Critical Tn = 2.799 <br />after outlier removal <br />2.786. <br />Statistical outliers <br />are shown as solid squares. <br />Data, after outlier removal, <br />were found to be log -normally <br />distributed. <br />Normality test used: <br />Shapiro Will. <br />W Statistic = 0.9385 <br />W Quantile = 0.931 <br />Dec 1996 Dec 2001 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: Turbidity (NTU) Facility: Austin Road LF Data File: AUSTININ <br />Date: 1/8/07, 6:19 PM Client: Austin Road LF View: —Batch <br />® ® HE ST OCICIATES, INC. <br />