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Outlier Analysis Summary Page 1 <br /> Date:12/17/07,11:45 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 /> Arsenic Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 26 0.003742 0.00158 Normal Shapiro Wilk <br /> Barium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 26 0.1603 0.03739 Normal Shapiro Wilk <br /> Bicarbonate as CaCO3(mg/L) AMW-2 Yes 79 EPA 1989 0.05 53 333.7 90.53 Normal Shapiro Wilk <br /> Calcium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 18 105.2 23.42 Unknown Shapiro Wilk <br /> Carbonate as CaCO3(mg/L) AMW-2 No n/a EPA 1989 0.05 53 1.653 2.174 Unknown Shapiro Wilk <br /> Chloride(mg/L) AMW-2 Yes 454,18.3 EPA 1989 0.05 78 54.86 47.8 Log-normal Shapiro Wilk <br /> Chromium[Hexavalent]Dis.(mg/L) AMW-2 No n/a EPA 1989 0.05 20 0.00341 0.001262 Unknown Shapiro Wilk <br /> Magnesium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 18 49.22 10.58 Unknown Shapiro Wilk <br /> Nitrate as N(mg/L) AMW-2 Yes 1.4,125 EPA 1989 0.05 78 25.79 18.61 Unknown Shapiro Wilk <br /> Oil&Grease(mg/L) AMW-2 n/a n/a n/a n/a 18 n/a 0 Unknown Shapiro Wilk <br /> Potassium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 18 8.717 0.9733 Normal Shapiro Wilk <br /> Sodium Dissolved(mg/L) AMW-2 No n/a EPA 1989 0.05 18 66.61 9.357 Unknown Shapiro Wilk <br /> Specific Conductance[Field](umhos/cm) AMW-2 Yes 389 EPA 1989 0.05 79 958.7 232 Log-normal Shapiro Wilk <br /> Strontium Dissolved(ug/L) AMW-2 No n/a EPA 1989 0.05 18 1057 206.2 Unknown Shapiro Wilk <br /> Sulfate as SO4(mg/L) AMW-2 No n/a EPA 1989 0.05 76 87.16 32.94 Normal Shapiro Wilk <br /> Temperature(Deg-C) AMW-2 No n/a EPA 1989 0.05 48 18.43 1.463 Normal Shapiro Wilk <br /> Total Dissolved Solids[TDS](mg/L) AMW-2 No n/a EPA 1989 0.05 77 677.2 161.1 Normal Shapiro Wilk <br /> Turbidity(NTU) AMW-2 No n/a EPA 1989 0.05 48 17.21 26.15 Unknown Shapiro Wilk <br /> Volatile Petroleum Hydrocarbons(ug/L) AMW-2 n/a n/a n/a n/a 18 n/a 0 Unknown Shapiro Wilk <br /> PH[Field](su) AMW-2 No n/a EPA 1989 0.05 77 7.458 0.354 Normal Shapiro Wilk <br /> HERST & ASSOCIATES, INC:' <br />