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LK E/NFELDER <br /> �Bllght t !,..Right Iudm <br /> For a summary of the results of chemical analyses, please refer to the Tables and <br /> Charts in the appendix of this report. The attached Charts 2 and 4 depict the overall <br /> TDS and nitrate concentrations over time. <br /> t5.3 2011 VADOSE ZONE SOIL SAMPLING <br /> Soil samples were collected from eight locations on September 16, 2011 during the <br /> third quarter 2011. Three locations (B-1, B-5 and B-7) were chosen as background <br /> locations where reportedly no wastewater has been applied in the past and five <br /> locations (B-2, B-3, B-4, B-6, and B-8) were chosen within the respective application <br /> fields. The following shows the ranges of the detected analytes: <br /> pH (6.60 to 9.34 units) <br /> • Total Volatile Solids (Non-detectable <1.0 to1.56 %) <br /> Cation Exchange Capacity (2.31 to 16.96 meq/100g) <br /> Nitrate as Nitrogen (Non-detectable, <5.0 to 19 mg/kg) <br /> Total Kjeldahl Nitrogen (Non-detectable, <20 to 440 mg/kg) <br /> ' The results were similar to past results with no notable trends. Recent and historical <br /> sampling results are tabulated in Table 4. <br /> 101486.4/ST012R025 Page 16 of 20 February 1, 2012 <br /> Copyright 2012 Kleinfelder <br />