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CONCLUSIONS AND RECOMMENDATIONS <br /> In summary, the soil conditions examined near the proposed septic system drain field <br /> appear to be suitable. A satisfactory soil percolation rate of 2.6 minutes per inch was <br /> observed in the deep test zone. <br /> The depth of ground water based on recent aquifer levels is approximately 120 to 131 <br /> feet below the ground surface, depending on the season. The ground-water flow <br /> direction is predominantly toward the southeast at a rate of approximately six to 13 feet <br /> per mile in the vicinity of the Site. <br /> The on-site domestic water well was tested for nitrate and DBCP. Nitrate was detected <br /> at a concentration of 0.8 mg/L-N in the water sample, well below the US EPA drinking <br /> water recommendation of 10 mg/L-N. DBCP was not detected in the sample. <br /> Based on the current project and potential future projects of up to 100 employees, the <br /> use of an on-site septic tank and drain field system is not expected to cause a buildup of <br /> nitrate in the aquifer above 4.0 mg/L-N. This level falls well below the US EPA drinking <br /> water recommendation of 10 mg/L-N. <br /> We believe the Site suitable for the use of standard septic systems utilizing leach lines <br /> and seepage pits. Based on the satisfactory result of the nitrate loading calculation, no <br /> nitrate mitigation is recommended. <br /> LOGE 1848 Page 14 <br />