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<br />DESCRIPTIVE STATISTICS GROUND WATER WELL 20-9 <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 10 8 0.1 0.05 0.091 0.017 <br />Antimony, dissolved M2oo-8 ICP-MS 10 10 0.0025 0.00015 0.001 0.001 <br />Arsenic, dissolved M200-8 ICP-MS 10 8 0.038 0.00125 0.008 0.011 <br />Barium, dissolved M200-71CP 10 0 4.13 3.275 3.665 0.228 <br />Beryllium, dissolved M200-8 ICP-MS 10 7 0.0013 0.0005 0.0008 0.0003 <br />Boron, dissolved M2oo-7 1CP 10 0 1.74 1.43 1.570 0.093 <br />Cadmium, dissolved M2oo-e ICP-MS 10 1 0.018 0.001 0.0082 0.0053 <br />Calcium, dissolved M200-7 ICP 10 0 11 10 10.5 0.5 <br />Chromium, dissolved M2oo-8 ICP-MS 10 1 0.0325 0.001 0.015 0.010 <br />Cobalt, dissolved M2oo-8 ICP-MS 10 8 0.00225 0.00015 0.001 0.001 <br />Copper, dissolved M200-8 ICP-MS 10 6 0.13 0.00125 0.022 0.041 <br />Iron, dissolved M2oo-8 ICP-MS 10 0 0.69 0.12 0.273 0.192 <br />Lead, dissolved M20D-8 ICP-MS 1D 9 0.002 0.00025 0.001 0.001 <br />Lithium, dissolved M200-7 ICP 10 0 0.62 0.6 0.602 0.006 <br />Magnesium, dissolved M200-7 ICP 10 0 5 4 4.8 0.3 <br />Manganese, dissolved M2oo-8 ICP-MS 10 0 0.0825 0.014 0.032 0.025 <br />Mercury, dissolved M2oo-8 ICP-MS 1D 9 0.0005 0.0001 0.0002 0.0002 <br />Molybdenum, dissolved M200-8 ICP-MS 1D 3 0.005 0.0005 0.002 0.002 <br />Nickel, dissolved M200-8 ICP-MS 10 6 0.01 0.001 0.003 0.003 <br />Potassium, dissolved M200-7 ICP 10 0 6.5 5 5.5 0.6 <br />Selenium, dissolved SM3500-Se C, AA-Hydride 10 10 0.003 0.0005 0.001 0.001 <br />Silica, dissolved M200-7 ICP 10 0 19 16.3 17.5 0.9 <br />Silver, dissolved M200-8 ICP-MS 10 1 0.0021 0.00025 0.0014 0.0006 <br />Sodium, dissolved M2oo-7 ICP 10 0 2550 2260 2369.0 108.9 <br />Strontium, dissolved M2oo-7 ICP 10 0 2.99 2.5 2.727 0.132 <br />Thallium, dissolved M2oo-8 ICP-MS 10 9 0.001 0.00015 0.0004 0.0003 <br />Uranium, dissolved M2o0-8 ICP-MS 10 10 0.0005 0.00015 0.0003 0.0002 <br />Vanadium, dissolved M200-7 ICP 10 10 0.015 0.0025 0.0123 0.0052 <br />Zinc, dissolved M200-8 ICP-MS 10 5 0.4 0.005 0.095 0.142 <br />Bicarb as CaC03 M2320B 10 0 5100 4160 4700 285 <br />Carbonate as CaC03 M2320B 10 8 536 1 98 167 <br />Hydroxide as CaC03 M2320B 10 10 100 1 34 46 <br />Total Alkalinity M2320B 10 0 5100 4160 4775 292 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />