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CONCLUSIONS AND RECOMMENDATIONS <br /> In summary, the soil conditions examined near the proposed septic system drain field <br /> were found to be suitable for a standard septic system. A satisfactory soil percolation <br /> rate of 8.93 min/in was observed in the test location. The soil encountered was sandy <br /> clay, with a hardpan layer at the surface. <br /> The depth of ground water based on recent aquifer levels is approximately 85 to 95 feet <br /> below ground surface. According to the maps reviewed, the ground-water flow beneath <br /> the Site is to the northeast at a rate of approximately eight feet per mile. <br /> A water sample was collected from the domestic well on the Site. Nitrate was detected <br /> in the sample at a concentration of 2.8 mg/L-N, below the MCL of 10 mg/L-N. DBCP <br /> was detected in the sample at a concentration of 0.1 ug/L, below the MCL of 0.2[g/L; <br /> the MCL Goal for DBCP is zero. <br /> Septic system construction utilizing leach lines and seepage pits should follow the San <br /> Joaquin County On-Site Wastewater Treatment Systems Standards (2017) where <br /> applicable. <br /> LOGE 20-38 Page 8 <br />