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Outlier Analysis Summary Page I <br /> Date:9/27/07,10:44 AM Facility:Austin Road LF <br /> Data File:AUSTININ Client:Austin Road LF <br /> Constituent Well Outlier Values Method Alpha N Mean Std. Dev. Distribution Normality Test <br /> Chloride(mg/L) AMW-2 Yes 454,18.3 EPA 1989 0.05 77 55.18 48.03 Unknown Shapiro Wilk <br /> Nitrate as N(mg/L) AMW-2 Yes 1.4,125 EPA 1989 0.05 77 25.93 18.69 Unknown Shapiro Wilk <br /> PH[Field](su) AMW-2 No n/a EPA 1989 0.05 76 7.462 0.3546 Normal Shapiro Wilk <br /> Specific Conductance[Field](umhos/cm) AMW-2 Yes 389 EPA 1989 0.05 78 962.6 230.9 Log-normal Shapiro Wilk <br /> Total Dissolved Solids[TDS](mg/L) AMW-2 No n/a EPA 1989 0.05 76 679 161.4 Normal Shapiro Wilk <br /> Bicarbonate as CaCO3(mg/L) AMW-2 Yes 79 EPA 1989 0.05 52 334.1 91.36 Normal Shapiro Wilk <br /> Carbonate as CaCO3(mg/L) AMW-2 No n/a EPA 1989 0.05 52 1.656 2.195 Unknown Shapiro Wilk <br /> Sulfate as SO4(mg/L) AMW-2 No n/a EPA 1989 0.05 75 87.53 32.99 Normal Shapiro Wilk <br /> Temperature(Deg-C) AMW-2 No n/a EPA 1989 0.05 47 18.42 1.478 Normal Shapiro Wilk <br /> Arsenic Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 25 0.003752 0.001612 Normal Shapiro Wilk <br /> Barium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 25 0.163 0.03541 Normal Shapiro Wilk <br /> Chromium[Hexavalent]Dis.(mg/L) AMW-2 No n/a EPA 1989 0.05 19 0.003358 0.001275 Unknown Shapiro Wilk <br /> Turbidity(NTU) AMW-2 No n/a EPA 1989 0.05 47 17.57 26.32 Unknown Shapiro Wilk <br /> Oil&Grease(mg/L) AMW-2 n/a n/a n/a n/a 17 n/a 0 Unknown Shapiro Wilk <br /> Calcium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 17 107.6 21.69 Unknown Shapiro Wilk <br /> Magnesium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 17 50.29 9.847 Unknown Shapiro Wilk <br /> Potassium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 17 8.8 0.9347 Unknown Shapiro Wilk <br /> Sodium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 17 67.41 8.987 Unknown Shapiro Wilk <br /> Strontium Dissolved(ug/L) AMW-2 Yes 670,620 EPA 1989 0.05 17 1079 190.4 Normal Shapiro Wilk <br /> Volatile Petroleum Hydrocarbons(ug/L) AMW-2 n/a n/a n/a n/a 17 n/a 0 Unknown Shapiro Wilk <br /> v.e.zoos. <br /> ® HERST&OCIATES, INC." <br />