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<br /> <br />DESCRIPTIVE STATISTICS GROUND WATER WELL 20-9 <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 M2oo-7 ICP t2 10 0.1 0.05 0.092 0.016 <br />Antimony, dissolved M200-8 ICP-MS t2 12 0.0025 0.00015 0.001 0.001 <br />Arsenic, dissolved M200-B ICP-MS t2 9 0.038 0.00125 0.010 0.011 <br />Barium, dissolved M200-7 ICP t2 0 4.13 3.275 3.670 0.211 <br />Beryllium, dissolved M2oo-8 ICP-MS 12 9 0.0025 0.0005 0.0010 0.0006 <br />Boron, dissolved M200-7 ICP 12 0 1.74 1.43 1.573 0.085 <br />Cadmium, dissolved M200-8 ICP-MS 12 1 0.018 0.001 0.0080 0.0048 <br />Calcium, dissolved M200-7 ICP 12 0 11 10 10.5 0.5 <br />Chromium, dissolved M200-8 ICP-MS t2 1 0.0325 0.001 0.013 0.010 <br />Cobalt, dissolved M2oo-8 ICP-MS t2 10 0.00225 0.00015 0.001 0.001 <br />Copper, dissolved M2oo-8 ICP-MS 12 6 0.26 0.00125 0.042 0.078 <br />Iron, dissolved M200.8 ICP-MS 12 0 0.69 0.07 0.241 0.189 <br />Lead, dissolved M200-8 ICP-MS 12 10 0.006 0.00025 0.001 0.002 <br />Lithium, dissolved M200-7 ICP 12 0 0.62 0.5 0.593 0.030 <br />Magnesium, dissolved M200-7 ICP 12 0 5 4 4.8 0.3 <br />Manganese, dissolved M200-8 ICP-MS t2 0 0.0825 0.014 0.031 0.024 <br />Mercury, dissolved M2oo-8 ICP-MS 12 11 0.0005 0.0001 0.0003 0.0002 <br />Molybdenum, dissolved MzoO-8 ICP-MS 12 4 0.005 0.0005 0.002 0.002 <br />Nickel, dissolved M200-8 ICP-MS 12 7 0.33 0.001 0.030 0.094 <br />Potassium, dissolved M200-7 ICP 12 0 6.5 5 5.5 0.6 <br />Selenium, dissolved SM7500-Se C. AA-Hydride t2 12 0.003 0.0005 0.002 0.001 <br />Silica, dissolved M2oo-7 ICP 12 0 19 16.3 17.5 0.8 <br />Silver, dissolved M2oo-8 ICP-MS 12 2 0.0021 0.00025 0.0014 0.0005 <br />Sodium, dissolved M200-7 ICP t2 0 2550 2200 2352.5 109.9 <br />Strontium, dissolved M200-7 ICP 12 0 2.99 2.5 2.733 0.121 <br />Thallium, dissolved M200-8 ICP-MS t2 11 0.0015 0.00015 0.0005 0.0004 <br />Uranium, dissolved M200-8 ICP-MS t2 12 0.0015 0.00015 0.0004 0.0004 <br />Vanadium, dissolved M200-7 ICP t2 12 0.015 0.0025 0.0127 0.0048 <br />Zinc, dissolved M200-8 ICP-MS 12 5 0.4 0.005 0.090 0.130 <br />Bicarb as CaC03 M2320B 12 0 5100 4160 4692 282 <br />Carbonate as CaC03 M2320B t2 10 536 1 82 156 <br />Hydroxide as CaC03 M2320B 12 12 100 1 29 43 <br />Total Alkalinity M232oB 12 0 5100 4160 4755 291 <br /> <br />Analyte concentrations reported below the defection limit are set equal to one half the detection limit for all statistical calculations. <br />