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• CONCLUSIONS AND RECOMMENDATIONS <br /> In summary, the soil conditions in the percolation test locations appear to be suitable for <br /> use with on-site septic systems. Satisfactory soil percolation rates of less than 2.85 <br /> min/in (Parcel 1, shallow) and 2.50 min/in (Parcel 2, deep) were observed in the test <br /> locations. No new construction is planned for the Site. <br /> The depth of ground water based on recent aquifer levels is estimated to range between <br /> 147 to 167 feet below ground surface. The ground-water flow is to the southwest at a <br /> rate of approximately 3.7 to 4.5 feet per mile. <br /> A water sample was collected from ,the irrigation well. Nitrate was detected at a <br /> concentration of 0.9 mg/L-N in the ' ter sa DBCP was not detected in the <br /> sample. The US EPA has set the Maximum Contaminant Level (MCL) for nitrate as <br /> nitrogen at 10 mg/L and the MCL for DBCP at 0.2 µg/L. <br /> We believe the Site suitable for the use of standard septic systems utilizing leach lines <br /> and seepage pits. O <br /> • <br /> • <br /> LOGE 1621 Page 9 <br />