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L <br /> L September 14, 2006 <br /> NOA Project Number: E06095A <br /> Table 5. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth (ft) (minutes/inch) Duration (see notes) <br /> r <br /> Notch Parcel Shallow 3.5 13.8 4 hours Satisfactory Perc Rate <br /> 8-23-06 <br /> North Parcel Deep <br /> 14.5 No movement 4 hours Failing Perc Rate <br /> 8-23-06 <br /> r 1 11 <br /> South Parcel Shallow 3.5 6.76 4 hours Satisfactory Perc Rate <br /> 8-23-06 <br /> South Parcel Deep <br /> 8-23-06 17.5 62.5 4 hours Failing Perc Rate <br /> Note: A satisfactory percolation rate for a"shallov/'test is less than or equal to 60 minutes per inch.A satisfactory <br /> percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> V <br /> 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation / <br /> rate in accordance with the requirements of the E14D for the use of a standard septic system. •3) <br /> L6.8 Discussion of Septic System Sizing <br /> Septic System Construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> Standards where applicable. <br /> L 7.0 CONCLUSIONS <br /> In summary, satisfactory percolation rates of the soil were achieved in the proposed septic disposal <br /> Lareas of the Site. The septic disposal areas of the proposed parcels appear suitable for a standard <br /> septic system. <br /> L No ground water was encountered in any of the borings drilled on the property.The on-site water <br /> well was tested for nitrate and DBCP. DBCP was non-detectable, and nitrate concentration in <br /> L ground water was found to be 18.3 mg/L-N031 which is below the maximum contaminant drinking <br /> water limit of 45 mg/L-NO3' <br /> L <br /> L <br /> 9 <br /> .,44 <br /> L <br />