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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 /> P1, Satisfactory perc. <br /> 3/31/2026 2.90 17.8 4 hr. rate' <br /> Shallow Test <br /> Note: A satisfactory percolation rate for a "shallow"test is greater than 1 but less than or equal to 60 minutes per <br /> inch. <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 in the proposed future septic disposal area for the new house have <br /> demonstrated a satisfactory percolation rate for the use of a septic system in <br /> accordance with the requirements of the San Joaquin County Environmental Health <br /> Department. The percolation test is considered representative of soils within a 100-foot <br /> 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, most septic <br /> systems utilize leach lines with seepage pits. Additional considerations related to nitrate <br /> loading are discussed in the following section. <br /> LOGE 2614 Page 7 <br />