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September 21,2005 NCA Project Number: E05104A Table 4. Summary of Percolation Tests. LTest No., Percolation Percolation Rate Test Comment Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) P-1 deep,8-16-05 24.4 250 4 hours Unsatisfactory percolation rate, fail P-1 shallow,8-16-05 3.45 8.33 4 hours Satisfactory percolation rate P-2 deep,8-16-05 �4 5 83.3 4 hours Unsatisfactory percolation rate, fail P-2 shallow,8-16-05 3.25 5.43 4 hours Satisfactory percolation rate P-3 deep,8-16-05 14 8 41.66 4 hours Unsatisfactory percolation rate, fail P-3 shallow,8-16-05 3.19 13.88 4 hours Satisfactory percolation rate P-4 deep,8-10-05 24.6 6.09 4 hours Satisfactory percolation rate Pel shallow 8-10-05 3.45 125 4 hours Unsatisfactory percolation rate, fail P-5 deep 8-10-05 34.20 31.25 4 hours Unsatisfactory percolation rate, fail P-5 shallow 8-10-05 3.47 50 4 hours Satisfactory percolation rate P-6 deep 8-10-05 23.72 20.83 4 hours Satisfactory percolation rate P-6 shallow 8-10-05 3.0 9.25 4 hours Satisf percolation rate P-7 deep 8-10-05 23.62 41.66 l 3D 4 hours atisfacto olatum rate P-7 shallow 8-10-05 3.05 8.06 C60 , o 4 hours satisfactory person rate, ��/.�i� ✓ L fa l Note: A satisfactory percolation rate for a"shallow'test is less than or equal to 60 minutes � c . EE A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. 1 It. 6.7 Discussion of Percolation Test Results L The soils within the sewage disposal areas have demonstrated a satisfactory percolation rate in accordance with the requirements of the EHD for the use of a standard septic system. 6.8 Discussion of Septic System Sizing Septic System Construction should follow the San Joaquin County On-Site Wastewater Disposal �L LStandards where applicable or other engineering recommendations. L 10