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<br />DESCRIPTIVE STATISTICS GROUND WATER WELL 20-4A <br />JULY 1, 1999 • MARCH 31, 2000 <br /> <br />Parameter m /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 8 1 1.45 0.05 0.419 0.455 <br />Antimon ,dissolved M200~8 ICP~MS 8 2 0.02 0.00025 0.004 0.007 <br />Arsenic, dissolved M200 8 ICP MS 8 2 0.09 0.0015 0.016 0.030 <br />Barium, dissolved M200-7 ICP 8 0 2.18 0.04 0.337 0.745 <br />Ber Ilium, dissolved M200-8 ICP-MS 8 7 0.005 0.00025 0.0010 0.0016 <br />Boron, dissolved M200.7 ICP 8 0 6.8 0.21 1.086 2.309 <br />Cadmium, dissolved M200~8 ICP-MS 8 6 0.04 0.00025 0.0053 0.0140 <br />Calcium, dissolved M200.7 ICP 8 0 4 0.6 2.2 1.1 <br />Chromium, dissolved M200-8 ICP-MS 8 1 0.16 0.00025 0.022 0.056 <br />Cobalt, dissolved M200.8 ICP MS 8 6 0.0025 0.00015 0.001 0.001 <br />Copper, dissolved M200.8 ICP~MS 8 4 0.96 0.00125 0.125 0.337 <br />Iron, dissolved M200.8 ICP-MS 8 1 0.3 0.01 0.109 0.120 <br />Lead, dissolved M200-8 ICP MS 8 6 0.005 0.00025 0.001 0.002 <br />Lithium, dissolved M200-7 ICP 8 3 1.6 0.02 0.240 0.550 <br />Magnesium, dissolved M200-7 ICP 8 2 6.25 0.2 3.3 1.9 <br />Man anese, dissolved M200.8 ICP~MS 8 1 0.11 0.0008 0.016 0.038 <br />Mercu ,dissolved M200-8 ICP-MS 8 8 0.0005 0.0001 0.0003 0.0002 <br />Mol bdenum, dissolved M200.8 ICP-MS 8 0 1.9 0.0153 0.265 0.661 <br />Nickel, dissolved M200.8 ICP-MS 8 2 0.02 0.0005 0.004 0.007 <br />Potassium, dissolved M200.7 ICP 8 0 35 1.75 9.7 10.7 <br />Selenium, dissolved SM3500~Se C, PA~Hytlride 8 8 0.003 0.0005 ().002 0.001 <br />Silica, dissolved M200~7 ICP 8 0 85 9 21.2 26.0 <br />Silver, dissolved M200-8 ICP-MS 8 7 0.0025 0.00015 0.0005 0.0008 <br />Sodium, dissolved M200.7 ICP 8 0 13500 890 2563.9 4420.2 <br />Strontium, dissolved M200-7 1CP 8 0 0.7 0.27 0.355 0.142 <br />Thallium, dissolved M200.8 ICP-MS 8 7 0.0025 0.00015 0.0005 0.0008 <br />Uranium, dissolved M200-8 ICP MS 8 1 0.012 0.00025 0.0023 0.0039 <br />Vanadium, dissolved M200-7 ICP 8 7 0.3 0.0025 0.0428 0.1040 <br />Zinc, dissolved M200.8 ICP~MS 8 7 0.1 0.005 0.019 0.033 <br />Bicarb as CaC03 M2320B 7 1 22700 0 3379 7822 <br />Carbonate as CaC03 M2320B 8 0 6900 327 1732 2141 <br />H droxide as CaC03 M2320B 8 6 900 1 188 327 <br />Total Alkalinity M2320B 8 0 29600 1570 5279 9830 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />