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<br />DESCRIPTIVE STATISTICS GROUND WATER WELL 20-4A <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 M200-71CP tt 1 1.45 0.05 0.385 0.393 <br />Antimony, dissolved M200-8 ICP-MS tt 5 0.02 0.00025 0.003 0.006 <br />Arsenic, dissolved M200-8 ICP-MS 1t 4 0.09 0.0015 0.013 0.026 <br />Barium, dissolved M2oo-7 ICP 11 0 2.18 0.04 0.297 0.628 <br />Beryllium, dissolved M200-8 ICP-MS tt 10 0.005 0.00025 0.0010 0.0015 <br />Boron, dissolved M2oo-7 ICP 11 0 6.8 0.18 0.852 1.973 <br />Cadmium, dissolved M200-8 ICP-MS 11 9 0.04 0.00025 0.0040 0.0119 <br />Calcium, dissolved M200.7 ICP 11 0 4 0.6 1.9 1.1 <br />Chromium, dissolved M200-8 ICP-MS 11 2 0.16 0.00025 0.017 0.047 <br />Cobalt, dissolved M20o-8 ICP-MS 1 t 9 0.0025 0.00015 0.000 0.001 <br />Copper, dissolved M200-8 ICP-MS 11 6 0.96 0.00125 0.092 0.288 <br />Iron, dissolved M20D-8 ICP-MS 11 2 0.3 0.01 0.092 0.106 <br />Lead, dissolved M200-8 ICP-MS 11 9 0.005 0.00025 0.001 0.001 <br />Lithium, dissolved M200-7 ICP 11 4 1.6 0.02 0.195 0.467 <br />Magnesium, dissolved M200-7 ICP 11 4 6.25 0.2 2.9 2.1 <br />Manganese, dissolved M200-8 ICP-MS t t 1 0.11 0.0008 0.012 0.032 <br />Mercury, dissolved M200-8 ICP-MS 11 11 0.0005 0.0001 0.0003 0.0002 <br />Molytxlenum, dissolved M200-8 ICP-MS 11 0 1.9 0.0153 0.202 0.563 <br />Nickel, dissolved M2oo-8 ICP-MS 11 2 0.02 0.0005 0.005 0.006 <br />Potassium, dissolved M200-7 ICP 11 0 35 1.75 9.3 9.2 <br />Selenium, dissolved SM3500-Se C, AA-Hydride 11 11 0.003 0.0005 0.003 0.001 <br />Silica, dissolved M200-7 ICP 11 0 85 9 18.9 22.2 <br />Silver, dissolved M200-8 ICP-MS 11 10 0.0025 0.00015 0.0004 0.0007 <br />Sodium, dissolved M2oo-71CP 1t 0 13500 890 2187.5 3755.5 <br />Strontium, dissolved M200-71CP 1t 0 1.35 0.27 0.522 0.392 <br />Thallium, dissolved M200-8 ICP-MS tt 9 0.0025 0.00015 0.0005 0.0007 <br />Uranium, dissolved M200-8 ICP-MS 11 4 0.012 0.00015 0.0018 0.0034 <br />vanadium, dissolved M200-71CP t1 10 0.3 0.0025 0.0325 0.0888 <br />Zinc, dissolved M200-8 ICP-MS 11 9 0.1 0.005 0.017 0.028 <br />Bicarb as CaC03 M2320B 11 4 22700 1 2459 6732 <br />Carbonate as CaC03 M2320B 11 0 6900 327 1477 1849 <br />Hydroxide as CaC03 M23206 11 6 2060 1 516 677 <br />Total Alkalinity M2320B 11 0 29600 1570 4437 8351 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />