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• Table 8 GROUNDWATER CHEMICAL ANALYSIS Monitoring Well Number WELL L-2 (CHUG) Location LOADOUT Geologic Unit Monitored Ground Elevation (ft-am sl) Date of Collection 09/29/80 06/71/81 08/73/81 72/18/81 03/28/82 FIELD PARAMETERSI Conductivity (umhos/em at 25(C)) 620 560 575 560 580 pH (units) 7.3 7.4 7.8 7.5 7.7 Water Temperature (C) 19 20 15 8 17 LABORATORY PARAMETER51 Aluminum 0.007 0.008 0.03 0.009 0.015 Arsenic -0.001 -0.001 -0.001 -0.007 -0.001 BARIUM -0.001 -0.001 -0.007 -0.001 -0.001 Bicarbonate 294 156 188.0 182 191 Boron 0.020 0.030 0.145 0.150 0.346 Cadmium -0.001 -0.001 -0.001 -0.001 -0.001 Calcium 98 60.4 96.4 89 94.6 Carbonate 3.66 -0.007 -0.001 -0.01 -0.001 Cation - Anion BALANCE (S)3 -9.59 4.65 -2.93 1.23 6.88 Chloride 2.2 13.0 12 6.0 10 Copper 0.003 0.017 0.002 0.007 0.008 Fluoride 0.16 0.152 0.29 0.165 0.220 Hardness (as CaC03) 229 353 371 317 Iron (dissolved) -0.001 -0.001 0.10 0.08 -0.001 Lead 0.004 0.002 0.001 -0.007 0.077 Magnesium 33 12.8 23.3 15.9 10.60 Manganese (dissolved) 0.002 -0.001 0.002 0.013 0.007 Mercury (ug/1) -0.1 -0.1 -0.1 -0.1 -0.1 Molybdenum -0.001 -0.001 -0.001 0.002 -0.001 Nickel -0.007 -0.001 -0.007 -0.001 0.005 Nitrogen - Ammonia 0.440 -0.001 0.3 -0.01 0.060 Nitrate as N 0.37 0.105 0.375 0.440 Nitrate + Nitrite as N 1.453 Phosphate 0.045 0.60 0.005 -0.001 Potassium 1.80 1.9 7.34 3.4 1.580 Selenium 0.002 0.007 -0.001 -0.001 0.005 Sodium 7.6 7.0 9.3 10.0 6.200 Solids, Total Dissolved 498 274 416 352 430 Sulfate 76.0 97.3 160 156 160 Sulfide as S -0.001 -0.001 -0.01 -0.001 Zinc 0.082 0.073 0.072 0.044 0.065 1 All measurements are in milligrams per liter (mg/1) unless otherwise noted. A minus sSgn indicates concentrations below analytical detection limits. 2 Negative acidity indicates that the water is alkaline. 3 A negative balance indicates that cations exceed anions. •