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<br />DESCRIPTIVE STATISTICS GROUND 1YATER WELL 21.4U <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 9 8 0.4 0.075 0.169 0.090 <br />Antimon ,dissolved M200~81CP-MS 9 7 0.005 0.0005 0.003 0.002 <br />Arsenic, dissolved M200~8 ICP~MS 9 5 0.025 0.005 0.015 0.007 <br />Barium, dissolved M200~7 ICP 9 0 5.29 4.87 5.033 0.154 <br />Beryllium, dissolved M200 8 ICP-MS 9 8 0.005 0.0005 0.0023 0.0018 <br />Boron, dissolved M200-7 ICP 9 0 3.4 2.9 3.150 0.150 <br />Cadmium, dissolved M200~8 ICP MS 9 2 0.03 0.001 0.0101 0.0114 <br />Calcium, dissolved M200~7 ICP 9 0 8 5 5.6 1.0 <br />Chromium, dissolved M200-8 ICP~MS 9 1 0.138 0.002 0.047 0.051 <br />Cobalt, dissolved M200-8 ICP MS 9 5 0.0025 0.0005 0.002 0.001 <br />Copper, dissolved M200 8 ICP-MS 9 6 1.25 0.005 0.210 0.429 <br />Iron, dissolved M200~8 ICP~MS 9 1 1.1 0.05 0.510 0.354 <br />Lead, dissolved M200 8 ICP~MS 9 7 0.012 0.001 0.004 0.004 <br />Lithium, dissolved M200-7 ICP 9 0 0.8 0.7 0.778 0.044 <br />Magnesium, dissolved M200~71CP 9 0 10 8 8.3 0.7 <br />Man anese, dissolved M200-8 ICP~MS 9 0 0.243 0.073 0.173 0.068 <br />Mercury, dissolved M200-8 ICP~MS 9 9 0.0025 0.0001 0.0006 0.0007 <br />Mol bdenum, dissolved M200 8 ICP-MS 9 2 0.018 0.002 0.006 0.005 <br />Nickel, dissolved M200~8 ICP-MS 9 4 0.011 0.004 0.009 0.003 <br />Potassium, dissolved M200~7 ICP 9 0 11 8 9.3 1.0 <br />Selenium, dissolved SM3500~Se C, AA~Hytlride 9 8 0.006 0.0005 0.002 0.002 <br />Silica, dissolved M200-7 ICP 9 0 18 12 13.8 1.8 <br />Silver, dissolved M200~8 ICP MS 9 5 0.008 0.0005 0.0020 0.0024 <br />Sodium, dissolved M200~7 ICP 9 0 5580 5040 5304.4 167.6 <br />Strontium, dissolved M200 7 ICP 9 0 1.5 1.3 1.409 0.061 <br />Thallium, dissolved M200~8 ICP-MS 9 9 0.0025 0.00025 0.0011 0.0009 <br />Uranium, dissolved M200-8 ICP~MS 9 5 0.003 0.0005 0.0015 0.0010 <br />Vanadium, dissolved M200~7 ICP 9 9 0.05 0.0125 0.0264 0.0098 <br />Zinc, dissolved M200-8 ICP-MS 9 3 0.22 0.04 0.113 0.052 <br />Bicarb as CaC03 M2320B 9 0 11600 7120 10207 1358 <br />Carbonate as CaC03 M23206 9 8 3120 100 436 1007 <br />H droxide as CaC03 M23206 9 9 100 1 89 33 <br />Total Alkalinity M2320B 9 0 11600 9620 10549 723 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />