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11 <br /> December 11, 2006 <br /> NOA Project Number: E06141A <br /> FiTable5. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Fil Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> P-1 Shallow 3.0 4_5 4 hours Satisfactory percolation rate / <br /> 0 <br /> � P-2 Shallow 3.11 �' 7.$ 4 hours I Satisfactory percolation tate 11 <br /> 1 <br /> Note: A satisfactory percolation rate for a"shallow'test is' ss than or equal to 60 minutes per inch. <br /> [ I A satisfactory percolation rate for a"deep"test Mess than or equal to 30 minutes per inch. <br /> Fi6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation <br /> F! rate in accordance with the requirements of the EHD for the use of a standard septic system. <br /> I <br /> 6.8 Discussion of Septic System Sizing <br /> Septic System Construction should follow the San Joaquin County On-Site Wlastewater Disposal <br /> Standards where applicable. Due to the potential shallow water existing below the site, a shallow <br /> leach line or filter bed system is recommended. <br /> F1 <br /> rl 7.0 CONCLUSIONS <br /> In summary, satisfactory percolation rates of the soil were achieved in the proposed septic disposal <br /> areas of the Site. The project is suitable for a standard septic system utilizing leach lines or a filter <br /> Fi bed. <br /> No ground water was encountered in any of the borings drilled on the property. The depth to <br /> F11 <br /> groundwater was 10 to 20 feet in 1999. The on-site water well was tested for nitrate and DBCP. <br /> DBCP was not detected in the well, and the nitrate concentration in the ground water was found to <br /> be 22.7 mg/L-NO3,below the maximum contaminant drinking water limit of 45 mg/L-NO3. <br /> Fi <br /> 11 <br /> -s. <br /> i �� <br />