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able 1 ~URFACE WATER CHEMICAL ANALYSIS Monitoring Site N. THOMPSON CR. Location UPSTREAM Date of Collection 09/29/80 06/11/81 08/13/81 12/16/81 03/26/82 FIELD PARAMETERSI Conductivity (umhos/em at 25(C)) 260 240 170 210 200 Discharge (cfs) NA 17.3 1.17 1.04 FROZEN pH (units) 8.1 7.7 7.5 7.0 7.7 Water Temperature (C) 11 18 11 0.0 3 LABORATORY PARAMETERSI Aluminum 0.030 0.013 0.06 0.017 0.012 Arsenic -0.001 -0.001 -0.001 -0.001 -0.001 Barium -0.001 -0.001 -0.001 -0.001 -0.001 Bicarbonate 132 81.4 122 121 148 Boron 0.035 0.120 0.02 -0.001 0.095 Cadmium -0.001 -0.001 -0.001 -0.001 -0.001 Calcium 33 23 31.8 31 35 Carbonate 4.92 -0.001 -0.001 -0.001 -0.001 ation - Anion ~ Balance (~)3 1.68 -2.57 6.41 6.33 Chloride 3.0 11.2 8 6.0 8 Chromium 0.001 -0.001 0.001 -0.001 0.001 Copper 0.010 -0.001 0.011 0.009 0.006 Fluoride 0.13 0.065 0.18 0.094 0.170 Hardness (as CaC03) 75.9 131 118 118 Iron (dissolved) 0.418 -0.001 0.115 -0.001 0.150 Lead -0.001 0.002 -0.001 -0.001 Magnesium 6.3 3.06 6.1 3.7 5.30 Manganese (dissolved) 0.006 0.012 0.007 0.003 0.002 Mercury (ug/1) -0.1 -0.1 -0.1 -0.1 -0.1 Molybdenum -0.001 -0.001 -0.001 0.001 0.001 Nickel -0.001 -0.001 -0.001 0.002 0.002 Nitrogen - Ammonia 0.528 0.080 0.450 -0.001 0.080 Nitrate as N 0.040 -0.001 -0.001 -0.001 Phosphate 0.031 1.318 0.026 0.010 Potassium 1.07 1.0 1.5 0.70 0.80 Selenium -0.001 -0.001 -0.001 -0.001 -0.001 Sodium 8.0 5.0 10 4.0 7.90 Solids, Total Dissolved 100 240 92 198 168 Solids, Total Suspended 3.2 352 4.0 30 Sulfate 26.2 2.2 10 8.2 11.5 Sulfide as S -0.001 -0.001 -0.001 -0.1 Zinc 0.055 0.005 0.021 0.012 0.019 VOLATILE SOLIDS 174 66 86 8 All measurements are in milligrams per liter (mg/1) unless otherwise noted. A minus sign indicates concentrations below analytical detection limits. 2 Negative acidity indicates that the water is alkaline. 3 A negative balance indicates that cations exceed anions.