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KLE/NFELOER ' �enynere�ie.aynesawo,. Total Kjeldahl Nitrogen (Non-detectable, < 0.40 to 0.43 mg/1) Total Coliform Bacteria (Non-detectable, <1.1 to >23 MPN/100ml) Fecal Coliform (Non-detectable, <1.1 to 23 MPN/100ml) ' The ranges of the concentrations of the analytes detected in the McKinley Avenue Rapid Infiltration Area were generally consistent with the previous findings, with some slight improvements noted. Both TDS and nitrate as N concentrations noted in wells W-1 and W-5 maintained a consistent level throughout the year, although the nitrate ' concentration increased slightly during the middle of the year. In well W-4, nitrate as N steadily decreased, however TDS showed an increasing trend throughout the year. ' For a summary of the results of chemical analyses, please refer to the Table 3 and Chart 1 (TDS) and Chart 3 (nitrate as N), in the appendix of this report. Charts 1 and 3 depict the TDS and nitrate concentrations over time. 5.2.2 North and South Louise Avenue Infiltration Area Groundwater quality during 2011 for the monitoring wells in the North and South Louise Avenue Infiltration Areas had the following ranges of concentrations: pH (7.09 to 7.57 units) ' . Total Dissolved Solids (180 to 1200 mg/1) Ammonia as Nitrogen (Non-detectable,<0.50 mg/I to 0.300 mg/1) Nitrate as Nitrogen (1.2 to 41 mg/1) Total Kjeldahl Nitrogen (Non-detectable, <0.20 to 0.60 mg/1) ' . Total Coliform Bacteria (Non-detectable, <1.1 MPN/100ml) Fecal Coliform (Non-detectable, <1.1 MPN/100ml) Concentrations of TDS in 2011 were generally consistent with previous findings. The concentrations of nitrate as N displayed a decreasing trend toward the end of the year following a slight rise in the beginning of the year. 101466.41ST012R025 Page 15 of 20 February 1, 2012 ' Copyright 2012 Kleinfelder