2021-12-07_REVISION - M2012032 (24)

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Table U-6 Summary of Groundwater Data for Past 5 Quarters GW-2B Nondetect Sample Analyte Units Minimum Maximum Average Count Count Aluminum,dissolved mg/L 0.05 0.05 0.05 6 6 Antimony,dissolved mg/L 0.00065 0.0011 0.00080 6 Arsenic,dissolved mg/L 0.0002 0.0007 0.0003 11 6 Barium,dissolved mg/L 0.029 0.0676 0.054 6 Beryllium,dissolved mg/L 0.00008 0.00008 0.00008 6 6 Bicarbonate as CaCO3 mg/L 26.4 29.4 28.3 6 Boron,dissolved mg/L 0.02 0.03 0.02 6 6 Cadmium,dissolved mg/L 0.00011 0.000262 0.00021 6 Calcium,dissolved mg/L 17.5 37.3 28.1 6 Carbonate as CaCO3 mg/L 2 2 2 6 6 Chloride mg/L 0.5 0.65 0.6 3 5 Chromium,dissolved mg/L 0.0005 0.0005 0.0005 6 6 Conductivity @25C PS/cm 114 235 183 6 Copper,dissolved mg/L 0.0008 0.0008 0.0008 6 6 Cyanide,total mg/L 0.003 0.003 0.0031 6 6 Fluoride mg/L 0.15 0.26 0.21 1 6 Hardness as CaCO3 (dissolved) mg/L 50 105 79 6 Hydroxide as CaCO3 mg/L 2 2 2 6 6 Iron,dissolved mg/L 0.06 0.06 0.06 6 6 Lead,dissolved mg/L 0.0001 0.00017 0.0001 5 6 Magnesium,dissolved mg/L 1.4 2.99 2.3 6 Manganese,dissolved mg/L 0.01 0.01 0.01 6 6 Mercury,dissolved mg/L 0.0002 0.0002 0.0002 6 6 Molybdenum,dissolved mg/L 0.00074 0.001 0.001 6 Nickel,dissolved mg/L 0.008 0.008 0.0081 6 6 Nitrate/Nitrite as N mg/L 0.07 0.321 0.15 6 pH (lab) s.u. 6.9 7.8 7.5 6 Phosphorus,total mg/L 0.01 0.01 0.01 5 5 Potassium,dissolved mg/L 0.4 0.77 0.5 6 Total Dissolved Solids mg/L 84 160 1201 6 Total Suspended Solids mg/L 5 5 5 6 6 Selenium,dissolved mg/L 0.0001 0.00038 0.0003 6 Silica,dissolved mg/L 4.4 6 5 6 Silver,dissolved mg/L 0.0001 0.0001 0.0001 6 6 Sodium,dissolved mg/L 1.41 2.25 1.9 6 Sulfate mg/L 28.3 80.3 54.25 6 Thallium,dissolved mg/L 0.0001 0.0001 0.0001 6 6 Total Alkalinity mg/L 26.4 29.4 28.3 6 Uranium,dissolved mg/L 0.0001 0.0001 0.0001 61 6 Vanadium,dissolved mg/L 0.01 0.01 0.01 6 6 Zinc,dissolved mg/L 0.05 0.356 0.26 6 pH (field) s.u. 6.34 8.46 7.22 6 Water Temperature(field) deg.C 1.3 6.9 4.91 6 ORP(field) mV 228 365.6 265 5 Conductivity(field) PS/cm 1 319 127 4 Disolved Oxygen (field) % 50.4 65.9 58.8 3