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• Table 7-2 Groundwater Quality of the Upper Aquifer from American Soda's Water Supply Well (Hole 20-8). Parameter Upper Aquifer 430 feet 560 feet 560 feet (Pump Test) Total Alkalinity as CaCO, m /I 477 637 655 Phenol Alkalinity as CaCO~ m /I 26.6 42.0 0 Bicar ovate m 517 675 793 Carbonate m /I 31.9 50.4 0 Boron m /U 0.137 0.158 0.163 Bromi e m / 0.03 0.05 0.07 Calcium (m /I 39.1 17 23 Total Or amcCarbon m /1 38.0 5.20 48.0 C on e m I 16 25 20 Conductivi ,25°C mhos/cm) 1,180 1,480 1,790 Fluoride m /p 0.54 4.0 3.72 Hardness as CaCO, (m 311 265 245 H droxi e (m /I 0 0 0 Ma esium(m /I 53 45 48 Nitrate m /I) 0.77 0.79 0.24 Nitrite m /I <0.01 <0.01 <0.01 H units) 8.3 8.3 7.8 P os ate (m /q 0.18 0.04 <0.01 Tota Phos horous (m /I 0.20 0.05 0.04 Potassium m /I 8.1 1.7 2.3 Si ica (m /I 28.4 19.8 15.9 ium (m /I 170 276 296 Su fate m /1 187 178 148 S ~ e m /I 0.16 0.80 1.80 Total Dissolve Solids m /I 944 1,210 1,260 Total Sus ended Solids (m /I 1,610 5 5 uminum /U <0.001 <0.001 <0.001 Arsenic m /I) <0.001 <0.001 <0.001 Barium m /I <0.01 <0.01 0.06 Berv ium (m 0.0064 <0.001 <0.001 Bismuth (m / 0.004 0.005 0.006 Cadnuirm m /U <0.0002 0.0002 Q.0005 mium m 0.007 <0.001 <0.001 Co er m ) 0.010 0.030 0.001 Iron lm /I 0.07 0.10 0.05 Lead (m /I 0.024 0.001 0.002 Lithium m /I 0.200 0.120 0.098 Man anew m /I 0.048 0.021 0.019 Mercu m /I <0.00005 <0.00005 <0.00005 Mo bdenum m / 0.020 0.050 0.015 Nickel m /I <0.002 <0.002 <0.002 Selenium m /p <0.002 <0.002 0.004 Strontium m /1 4.72 1.04 0.914 Vanadium (m /I <0.001 c0.001 0.006 Zinc m /I 0.232 0.051 0.086 Anions me /I 14.78 17.91 16.85 Cations (me /I) 13.91 16.60 18.03 Balance %) -3.0 -3.79 3.4 American Soda, L.L.P. Commernal Mine Plan August 18, 1998 7-23