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<br />• <br />DESCR#P'f#VE STATISTICS GROUND WATER WELL 21-4A <br />JULY 1, 1999 -JUNE 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 12 11 0.45 0.15 0.175 0.087 <br />Antimony, dissolved M200-8 ICP-MS 12 9 0.019 0.0005 0.006 0.006 <br />Arsenic, dissolved M2oo-e ICP-MS 12 2 0.14 0.02 0.055 0.036 <br />Barium, dissolved M200-7 ICP 12 0 3.285 1.1 2.750 0.585 <br />Beryllium, dissolved M200-8 ICP-MS 12 12 0.015 0.0005 0.0038 0.0045 <br />Boron, dissolved M200-7 ICP 12 0 4.8 4.3 4.550 0.151 <br />Cadmium, dissolved M20o-8 ICP-MS 12 2 0.045 0.003 0.0125 0.0142 <br />Calcium, dissolved M200-7 ICP 12 0 11 6 7.9 1.4 <br />Chromium, dissolved M2oo-8 ICP-MS t2 2 0.128 0.00125 0.049 0.043 <br />Cobalt, dissolved M200-8 ICP-MS 12 5 0.0075 0.001 0.003 0.002 <br />Copper, dissolved M200-8 ICP-MS 12 4 0.83 0.005 0.179 0.261 <br />Iron, dissolved M200-8 ICP-MS 12 0 1.9 0.7 1.579 0.331 <br />Lead, dissolved M200-8 ICP-MS 12 7 0.02 0.001 0.006 0.006 <br />Lithium, dissolved M200-7 ICP 12 0 1.2 1 1.058 0.079 <br />Magnesium, dissolved M200-71CP 12 0 20 5 7.8 4.0 <br />Manganese, dissolved M200-8 ICP-MS 12 0 0.1955 0.045 0.108 0.061 <br />Mercury, dissolved M200-8 ICP-MS 12 12 0.0025 0.0001 0.0006 0.0006 <br />Molybdenum, dissolved M200-8 ICP-MS 12 1 0.673 0.01 0.094 0.186 <br />Nickel, dissolved M200-8 ICP-MS 12 4 0.03 0.005 0.014 0.009 <br />Potassium, dissolved M200-7 ICP 12 0 24 13 15.8 3.0 <br />Selenium, dissolved SM3500-Se C, AA-Hydride t2 11 0.004 0.0005 0.002 0.001 <br />Silica, dissolved M200-7 ICP 12 0 25 17 19.8 2.2 <br />Silver, dissolved M200-8 ICP-MS 12 8 0.005 0.0005 0.0017 0.0014 <br />Sodium, dissolved M200-7 ICP 12 0 8260 7360 7826.7 254.7 <br />Strontium, dissolved M2oo-7 ICP 12 0 1.3 0.8 1.188 0.138 <br />Thallium, dissolved M200-8 ICP-MS 12 12 0.005 0.00025 0.0016 0.0015 <br />Uranium, dissolved M2oo-8 ICP-MS 12 3 0.034 0.001 0.0063 0.0090 <br />vanadium, dissolved M200-7 ICP 12 10 0.29 0.025 0.0513 0.0758 <br />Zinc, dissolved M200-8 ICP-MS t2 7 0.32 0.02 0.138 0.110 <br />Bicarb as CaC03 M2320B 12 0 19300 11700 16146 1824 <br />Carbonate as CaC03 M2320B 12 11 4290 1 424 1218 <br />Hydroxide as CaC03 M23206 12 12 100 1 67 49 <br />Total Alkalinity M2320B 12 0 19300 15100 16504 1179 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />