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August 5, 2005 <br /> NOA Project Number: E05098A._. . <br /> r Table 4. <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 /> P-1 deep,8-3-05 _ Unsatisfactory percolation-rate, <br /> 25 0 125 4 hz _ fail <br /> ,'P-1 shallow,8-3-05 3.5 25 4 hr _ Satisfactory percolation tate <br /> Y P-2 deep,8-3-05 <br /> 23.0 5 4-hr. Satisfactory percolation_rate <br /> P-2 shallow,8-3-05 3.5. 16.6_ _ - 4-hr- Satisfactory percolation rate <br /> Note: A satisfactory.percolation rate for a.'shallov/'test is less than or equal to 60 minutes per inch. <br /> A satisfactory percolation rate for a"deep"test is less than or equal to 30 miuiutes per inch. <br /> / 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas have demonstrated a satisfactory percolation rate in <br /> accordance with the requirements of the EHD for the use of a standard septic system <br /> 77 <br /> �/6.8 _ Discussion of Septic System Sizing <br /> ` Septic System Construction should follow the San Joaquin County On-Sate Wlastewater Disposal <br /> Standards where applicable. <br /> 7.0 CONCLUSIONS -- <br /> In summary, a satisfactory`percolation rate of the soil was achieved in the proposed septic disposal <br /> area on the subject property. <br /> 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 /> ^- ground water was found to be- 13.8 tng/L-NO3,which is below the maximum contaminant drinking <br /> water limit of 45 mg/L-NO3. <br /> 9 <br />