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CITY OF SANTA ANA <br />Well No. 32 Nitrate Mitigation and Rehabilitation Study <br />The City also performed a Title 22 analysis on the water quality sample on November 1, 2012. The results <br />of the water quality testing are presented in Appendix B. A summary of the primary constituents is <br />presented in Table 2 -1. <br />Table 2 -1. Well No. 32 Water Quality Data (l) <br />PhysicaZParameters _ <br />Specific Conductance <br />unhos /em 1,130 <br />Turbidity <br />NTU _ <br />H <br />Units 7.8 <br />_ _ <br />Temperature <br />_ <br />de _Celsius 20.6 <br />General Minerals <br />_ <br />Total Dissolved Solids <br />m /L__678 <br /><0.5 <br />Total Or anic Carbon_ <br />m /L <br />0.29 <br />Total Hardness (as <br />CaCO3 <br />___ <br />mg /L <br />432 <br />Total Alkalinity (as <br />CaCO3 ) <br />mg /L <br />240 <br />Potassium <br />tng_/L <br />3.5 <br />Sodium <br />m /L <br />52.3 <br />Ma nesium <br />mg/L <br />23.9 <br />Calcium <br />m L <br />134 <br />Bicarbonate <br />m /L <br />240 <br />_ <br />Sulfate <br />m L <br />132 <br />_ _ <br />Nitrate as N <br />m L <br />_ <br />9.21 <br />Chloride <br />mg /L <br />115 <br />eo Sample collected November 1, 2012 <br />2.3 Water Quality Objectives <br />Metals <br />Aluminum <br />1.3 <br />A senic __ <br /><1 <br />Barium <br />/1 <br />161 <br />_ <br />Be yllium <br />µ <br /><0.5 <br />Cadmium <br />Chromium Totals <br />/1 <br /><I <br />-- <br />Copper .,._ <br />/l <br />2.5 <br />Iron <br />1 <br />_ 60.6 <br />Lead <br />1 <br />Q <br />_ <br />Manganese <br />_49/i <br />2.1 <br />_Mercury <br />_ .} g 1 <br /><0.1 <br />Nickel <br />2.5 <br />Perchlorate <br />_fig <br />4 <br />Selenium <br />_ggA <br />1 <br />1.9 <br />Silver <br />_ _Jtg/t <br />_ <1 <br />Thallium <br />t <br /><0.5 <br />Vanadium <br />L <br /><1 <br />Zinc <br />L <br />5.9 <br />The primary water quality goal of this project is to reduce the levels of nitrates in Well No. 32 to levels <br />that are less than half of the MCL. The MCL for nitrate is 45 mg /L as NO3 and the goal would be to <br />provide treatment to approximately 20 mg/L. The reduction in the nitrate level could be accomplished by <br />treatment or various blending alternatives. <br />PdP00599\0086Tr,,ircerine \05 \_ Well -32- Nitrate- MlligallonOmftReport \02text.doex -4- TETRA TECH <br />251 -22 <br />