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WATER CHEMISTRY EVALUATION OF THE EXISTING STIG-1 AND PROPOSED LEC-1 INJECTION WELLS <br /> Mg 3.004e-003 3.004e-003 <br /> N 2.165e-003 2.165e-003 <br /> Na 8.034e-002 8.034e-002 <br /> S 2.589e-003 2.589e-003 <br /> Si 4.469e-004 4.469e-004 <br /> ----------------------------Description of solution----------------------- <br /> pH = 7.561 Charge balance <br /> pe = 11. 657 Adjusted to <br /> redox equilibrium <br /> Activity of water = 0. 996 <br /> Ionic strength = 1.277e-001 <br /> Mass of water (kg) = 1.000e+000 <br /> Total alkalinity (eq/kg) = 1.588e-003 <br /> Total CO2 (mol/kg) = 1. 62le-003 <br /> Temperature (deg C) = 28.500 <br /> Electrical balance (eq) = -4.870e-003 <br /> Percent error, 100* (Cat- JAnl ) / (Cat+lAnl ) = -2.17 <br /> Iterations = 12 <br /> Total H = 1.110157e+002 <br /> Total 0 = 5.552965e+001 <br /> ----------------------------Distribution of species----------------------- <br /> Log Log <br /> Log <br /> Species Molality Activity Molality Activity <br /> Gamma <br /> OH- 6.343e-007 4.705e-007 -6.198 -6.327 - <br /> 0.130 <br /> H+ 3.375e-008 2.750e-008 -7.472 -7.561 - <br /> 0.089 <br /> H2O 5.551e+001 9. 964e-001 1.744 -0.002 <br /> 0.000 <br /> C (-4) 0.000e+000 <br /> CH4 0.000e+000 0.000e+000 -134.023 -134.010 <br /> 0.013 <br /> C (4) 1. 62le-003 <br /> HCO3- 1.403e-003 1.084e-003 -2.853 -2 . 965 - <br /> 0.112 <br /> CaHCO3+ 7.533e-005 5.82le-005 -4 .123 -4 .235 - <br /> 0.112 <br /> CO2 6.278e-005 6.466e-005 -4.202 -4.189 <br /> 0.013 <br /> NaHCO3 3. 638e-005 3.746e-005 -4 .439 -4.426 <br /> 0.013 <br /> MgHCO3+ 1.81le-005 1.389e-005 -4 .742 -4.857 - <br /> 0.115 <br /> CaCO3 1.392e-005 1.434e-005 -4 .856 -4.844 <br /> 0.013 <br /> CO3-2 5.55le-006 1. 978e-006 -5.256 -5.704 - <br /> 0.448 <br /> TECHNICAL MEMORANDUM_V3.DOC 32 <br />