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<br /> <br />DESCRIPTIVE STATISTICS GROUND 1NATER WELL 21-3U <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 7 2.6 0.1 0.606 0.906 <br />Antimon ,dissolved M200.8 ICP-MS 9 7 0.05 0.00025 0.010 0.017 <br />Arsenic, dissolved M200 8 ICP-MS 9 8 0.15 0.005 0.025 0.047 <br />Barium, dissolved M200~7 ICP 9 0 4.56 1.44 3.987 0.982 <br />Be Ilium, dissolved M200.8 ICP MS 9 6 0.025 0.001 0.0048 0.0077 <br />Boron, dissolved M200~7 ICP 9 0 7 2.8 3.413 1.348 <br />Cadmium, dissolved M200~8 ICP-MS 9 3 0.033 0.001 0.0131 0.0104 <br />Calcium, dissolved M200-7 ICP 9 2 15 2 7.1 3.5 <br />Chromium, dissolved M200 8 ICP MS 9 0 0.48 0.028 0.132 0.139 <br />Cobalt, dissolved M200 8 ICP-MS 9 8 0.015 0.00025 0.003 0.005 <br />Copper, dissolved M200~8 ICP-MS 9 7 0.15 0.0025 0.037 0.050 <br />Iron, dissolved M200.8 ICP-MS 9 0 1.2 0.2 0.498 0.300 <br />Lead, dissolved M200 8 ICP~MS 9 7 0.025 0.0005 0.005 0.008 <br />Lithium, dissolved M200-7 ICP 9 0 1.4 0.7 0.867 0.218 <br />Ma nesium, dissolved M200 7 ICP 9 0 20 6 15.9 4.4 <br />Man anese, dissolved M200.8 ICP MS 9 1 0.103 0.022 0.048 0.029 <br />Mercu ,dissolved M200 8 ICP MS 9 9 0.0015 0.0001 0.0006 0.0004 <br />Mol bdenum, dissolved M200~8 ICP-MS 9 0 1.77 0.006 0.215 0.583 <br />Nickel, dissolved M200~8 ICP MS 9 5 0.17 0.002 0.028 0.055 <br />Potassium, dissolved M200 7 ICP 9 0 64 13 30.0 15.0 <br />Selenium, dissolved SM3500 Se C, AA Hydride 9 9 0.003 0.0005 0.002 0.001 <br />Silica, dissolved M200~7 ICP 9 0 83 10 22.6 23.4 <br />Silver, dissolved M20081CP-MS 9 5 0.015 0.001 0.0034 0.0044 <br />Sodium, dissolved M200-7 ICP 9 0 13100 5680 6676.7 2413.0 <br />Strontium, dissolved M200 7 ICP 9 0 1.81 0.5 1.557 0.413 <br />Thallium, dissolved M200~8 ICP-MS 9 8 0.015 0.00025 0.0025 0.0047 <br />Uranium, dissolved M200-8 ICP MS 9 2 0.025 0.002 0.0080 0.0078 <br />Vanadium, dissolved M200-7 ICP 9 7 0.1 0.015 0.0361 0.0270 <br />Zinc, dissolved M200~8 ICP-MS 9 6 1.87 0.02 0.337 0.611 <br />Bicarb as CaC03 M23206 9 0 22700 9770 12986 3771 <br />Carbonate as CaC03 M2320B 9 8 6900 1 845 2271 <br />H droxide as CaC03 M23206 9 9 100 1 89 33 <br />Total Alkalinity M2320B 9 0 29600 9770 13752 6022 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />