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standard septic system, one percolation test (shallow or deep) must demonstrate a <br /> satisfactory percolation rate within the proposed septic system disposal field. <br /> Details and results of the percolation testing are summarized in the following table. <br /> Table 2. Percolation Test Summary <br /> Test No., Percolation Test Percolation Rate Test Duration Comments <br /> Date Tested Depth (ft.) (minutes/inch) (see notes) <br /> Pi-S <br /> 6/2/26 1.57 83.3 4 hr. Insufficient <br /> Shallow Test perc. rate <br /> P1-D Satisfactory <br /> 6/2/26 24.87 12.5 4 hr. <br /> perc. rate' <br /> Deep Test <br /> Note: A satisfactory percolation rate for a "shallow" test is greater than 1 but less than or equal to 60 min/in. A <br /> satisfactory percolation rate for a"deep"test is greater than 1 but less than or equal to 30 min/in. <br /> 1 Per San Joaquin County Environmental Health Department, a rate between 5.0 and 30.0 min/in requires an <br /> 8-foot separation between the bottom of dispersal system and ground water, or mitigation by system <br /> design or enhancement. <br /> Discussion of Percolation Test Results <br /> The soils near the proposed septic disposal areas for the new homes have <br /> demonstrated a satisfactory percolation rate for the use of standard septic systems in <br /> accordance with the requirements of the San Joaquin County Environmental Health <br /> Department. The percolation test is considered representative of soils within an <br /> approximate 100-foot radius of the test location. <br /> Discussion of Septic System Sizing <br /> Septic system construction should follow the San Joaquin County On-Site Wastewater <br /> Treatment Systems Standards (2017) where applicable. In this area, septic systems <br /> typically utilize leach lines with seepage pits. <br /> LOGE 2622 Page 7 <br />