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<br />DESCRIPTIVE STATISTICS GROUNfl WATER WELL 21-4A <br />JULY 1, 1999 -MARCH 32, 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 9 8 0.45 0.15 0.183 0.100 <br />Antimon ,dissolved M200-8 ICP-MS 9 6 0.019 0.0005 0.007 0.007 <br />Arsenic, dissolved M20081CP-MS 9 2 0.1 0.02 0.049 0.026 <br />Barium, dissolved M200~7 ICP 9 0 3.285 1.1 2.643 0.647 <br />Be Ilium, dissolved M200.8 ICP-MS 9 9 0.015 0.0005 0.0038 0.0051 <br />Boron, dissolved M200-7 ICP 9 0 4.8 4.3 4.567 0.166 <br />Cadmium, dissolved M200-8 ICP MS 9 1 0.045 0.003 0.0142 0.0162 <br />Calcium, dissolved M200-7 ICP 9 0 11 7 8.4 1.2 <br />Chromium, dissolved M200~8 ICP-MS 9 1 0.119 0.00125 0.048 0.037 <br />Cobalt, dissolved M200~81CP-MS 9 3 0.0075 0.0015 0.004 0.002 <br />Copper, dissolved M200-8 ICP~MS 9 4 0.83 0.005 0.192 0.303 <br />Iron, dissolved M200.8 ICP-MS 9 0 1.9 0.7 1.572 0.365 <br />Lead, dissolved M200~8 ICP-MS 9 5 0.02 0.001 0.007 0.007 <br />Lithium, dissolved M200.7 ICP 9 0 1.2 1 1.067 0.087 <br />Ma nesium, dissolved M200-7 ICP 9 0 20 6 8.6 4.4 <br />Man anese, dissolved M200.8 ICP MS 9 0 0.1955 0.05 0.126 0.060 <br />Mercu ,dissolved M200~8 ICP-MS 9 9 0.0025 0.0001 0.0007 0.0007 <br />Mal bdenum, dissolved M200.8 ICP-MS 9 1 0.673 0.015 0.120 0.210 <br />Nickel, dissolved M200 8 ICP MS 9 2 0.03 0.005 0.016 0.010 <br />Potassium, dissolved M200~7 ICP 9 0 24 13 16.4 3.2 <br />Selenium, dissolved SM3500 Se C, AA Hytlride 9 8 0.004 0.0005 0.002 0.001 <br />Silica, dissolved M200~7 ICP 9 0 25 18 20.4 2.1 <br />Silver, dissolved M20081CP-MS 9 6 0.005 0.0005 0.0017 0.0016 <br />Sodium, dissolved M200.7 ICP 9 0 8260 7480 7872.2 242.8 <br />Strontium, dissolved M200 7 ICP 9 0 1.3 0.8 1.161 0.150 <br />Thallium, dissolved M200.8 ICP-MS 9 9 0.005 0.00025 0.0015 0.0017 <br />Uranium, dissolved M200 8 ICP-MS 9 2 0.034 0.002 0.0080 0.0100 <br />Vanadium, dissolved M200.7 ICP 9 7 0.29 0.025 0.0600 0.0869 <br />Zinc, dissolved M200.8 ICP-MS 9 6 0.32 0.02 0.123 0.108 <br />Bicarb as CaC03 M2320B 9 0 19300 11700 16239 2127 <br />Carbonate as CaC03 M23206 9 8 4290 100 566 1397 <br />H droxide as CaC03 M2320B 9 9 100 1 89 33 <br />Total Alkalinity M2320B 9 0 19300 15100 16717 1303 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />