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109 ppm nitrate=25 ppm nitrate-nitrogen. Therefore, we find a 2.5x increase in nitrate-nitrogen <br /> concentration from 10 ppm in the soil to 25 ppm in the top water table. This increase may be <br /> attributable to nitrate concentrations originating from the wastewater treatment plant and surrounding <br /> agriculture production land. <br /> If we take the measured TN concentration of the septic tank effluent at 146 mg/L and decrease this <br /> concentration by 30% from soil denitrification as was calculated above,we find that a theoretical TN <br /> concentration of 103 mg/L may enter the water table. The TN concentration determined in the water <br /> table sample was found to be 115 mg/L. Therefore, the percolating effluent from the proposed <br /> project may theoretically create a dilution effect to the TN concentration found in the water table. <br /> It is imperative't hat low strength and low volumes of cleaners are used in the Restrooms/ <br /> Breakrooms since they can disrupt the septic tank biology. <br /> Page -10- <br /> Chesney Consulting <br />