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<br /> <br />DESCRIPTIVE STATISTICS GROUND WATER WELL 21-4D AND 21-4DX <br />JULY 1, 1999 -APRIL 30, 2000 <br /> <br />Parameter (mg/I) EPA Method TOTAL <br />SAMPLES BELOW <br />DETECTION MAXIMUM <br />VALUE MINIMUM <br />VALUE <br />MEAN VALUE STANDARD <br />DEVIATION <br />Aluminum, dissolved M200-7 ICP 6 6 1 0.3 0.767 0.361 <br />Antimony, dissolved M200-8 ICP-MS 6 3 0.01 0.0025 0.006 0.003 <br />Arsenic, dissolved M200-8 ICP-MS 6 1 0.11 0.025 0.080 0.030 <br />Barium, dissolved M200-7 ICP 6 0 5.99 3.29 4.797 1.026 <br />Beryllium, dissolved M2o0-8 ICP-MS 6 3 0.02 0.0025 0.0085 0.0066 <br />Boron, dissolved M2o0-7 ICP 6 0 11.5 10.1 10.867 0.516 <br />Cadmium, dissolved M200-8 ICP-MS 6 1 0.05 0.005 0.0193 0.0176 <br />Calcium, dissolved M200-7 ICP 6 1 20 5 15.2 7.1 <br />Chromium, dissolved M200-8 ICP-MS 6 0 0.74 0.218 0.438 0.223 <br />Cobalt, dissolved M20o-8 ICP-MS 6 6 0.005 0.00125 0.002 0.001 <br />Copper, dissolved M200-8 ICP-MS 6 4 0.18 0.0125 0.067 0.065 <br />Iron, dissolved M200-8 ICP-MS 6 0 9 2.9 4.833 2.263 <br />Lead, dissolved M2o0-8 ICP-MS 6 1 0.061 0.01 0.030 0.018 <br />Lithium, dissolved M200.7 ICP 6 0 4 2.9 3.300 0.506 <br />Magnesium, dissolved M200-7 ICP 6 2 10 4 7.2 2.8 <br />Manganese, dissolved M200-6 ICP-MS 6 0 0.17 0.024 0.086 0.056 <br />Mercury, dissolved M200-8 ICP-MS 6 5 0.01 0.0001 0.0024 0.0038 <br />Molybdenum, dissolved M200-8 ICP-MS 6 0 3.43 0.025 1.144 1.378 <br />Nickel, dissolved M200-8 ICP-MS 6 2 0.05 0.005 0.024 0.021 <br />Potassium, dissolved M200-7 ICP 6 0 161 130 143.8 12.0 <br />Selenium, dissolved sMasoo-sec. AA-Hydritle 6 4 0.003 0.0005 0.002 0.001 <br />Silica, dissolved M200-7 ICP 6 0 41 19 28.3 10.3 <br />Silver, dissolved M200-6 ICP-MS 6 5 0.005 0.0015 0.0028 0.0013 <br />Sodium, dissolved M200-7 ICP 6 0 29100 25300 27216.7 1837.8 <br />Strontium, dissolved M200-7 ICP 6 0 1.2 0.8 0.967 0.137 <br />Thallium, dissolved M200-8 ICP-MS 6 5 0.011 0.00125 0.0038 0.0038 <br />Uranium, dissolved M200-8 ICP-MS 6 3 0.0345 0.0015 0.0098 0.0127 <br />Vanadium, dissolved M200-7 ICP 6 3 0.9 0.05 0.3250 0.3078 <br />Zinc, dissolved M200-8 ICP-MS 6 0 3.5 0.2 2.517 1.242 <br />Bicarb as CaC03 M232oB 6 0 49900 38500 42850 3908 <br />Carbonate as CaC03 M232oB 6 5 2930 1 539 1173 <br />Hydroxide as CaC03 M2320B 6 6 100 1 51 54 <br />Total Alkalinity M232oB 6 0 49900 38500 43333 3781 <br /> <br />Analyle concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />