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AMIN& <br /> TABLE 4-5 <br /> RCRA STATISTICAL ANALYSIS <br /> MW-1 <br /> JULY 10, 1989 through APRIL 5, 1990 <br /> Below <br /> Detected Sample Detection Standard Coefficient 95 %* <br /> Metals &Minerals Size Limit Mean Median Deviation of Variance Minimum Maximum Range <br /> Aluminum 8 7 0.06 0.05 0.02 31.43 0.1 0.1 0.02 - 0.1 <br /> Arsenic 14 10 0.017 0.006 0.022 126.904 0.003 0.1 0 - 0.061 <br /> Barium 6 3 0.008 0.008 0.003 41.833 0.01 0.012 0.002- 0.014 <br /> Boron 4 0 0.13 0.12 0.01 8.00 0.12 0.14 0.11 - 0.15 <br /> Chromium 10 8 0.01 0.01 0.01 79.06 0.01 0.02 0- 0.02 <br /> Copper 10 7 0.01 0.01 0.01 80.20 0.01 0.03 0- 0.03 <br /> Manganese 12 5 0.016 0.013 0.011 71.857 0.01 0.03 0- 0.038 <br /> Titanium 4 2 0.004 0.004 0.002 44.488 0.003 0.006 0 - 0.008 <br /> Zinc 10 7 0.010 0.008 0.006 58.556 0.01 0.019 0- 0.022 <br /> General Minerals <br /> Calcium 10 0 19.49 21.65 3.72 19.09 14 23.2 12.0- 26.9 <br /> Magnesium 10 0 11.59 11.20 0.91 7.83 10.4 13.2 9.8 - 13.4 <br /> Potassium 10 6 3.80 2.50 1.70 44.81 3 6 0.4 -7.2 <br /> Sodium 10 0 18.21 15.05 5.53 30.38 12.2 26 7.1 -290.3 <br /> Chloride 10 0 8.80 9.15 2.24 25.47 5.9 12 4.3 - 13.3 <br /> Sulfate 10 0 7.08 7.00 0.11 1.60 7 7.3 6.9 - 7.3 <br /> Nitrate as N 10 0 1.76 2.45 0.94 53.40 0.65 2.5 -0 - 3.6 <br /> Total Dissolved Solids 10 0 169.60 173.50 23.66 13.95 121 198 122 117 <br /> Total Organic Carbon 10 1 0.92 0.78 0.51 55.13 0.3 2.1 0 - 1.9 <br /> Chemical Oxygen Demand 4 3 3.63 2.50 2.25 62.07 3 7 0 - 8 <br /> Total Alkalinity CaCO3 8 0 108.75 109.50 2.12 1.95 105 ill 105 - 113 <br /> Bicarbonate as CaCO3 8 0 107.50 109.50 4.38 4.07 100 ill 99 - 116 <br /> pH (Laboratory 4 0 8.00 8.00 0.00 0.00 8 8 . 8 <br /> EC (Laboratory 4 0 290.50 290.50 4.65 1.60 285 296 281 - 300 <br /> Notes: <br /> -Not Detected(ND)values handled as 0.5 times the detection limit for that constituent. <br /> -95 %range is defined as the mean +/- two standard deviations and contains 95%of the observations in a normal population distribution. <br /> Arsenic was reported by the analytical laboratory twice for each sample,once by ICAP (detection limit of 0.1 mg/L) and once by GFAA <br /> (detection limit of 0.005 mg/L).Only the GFAA results were used for this statistical analysis. <br /> Metals and minerals not shown on this Table were not detected in the four water samples. k" KLE1 N F E L D E R <br /> I I <br />