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equal to 60 min/in drop. For the Site to utilize a standard septic system, one percolation <br /> test must demonstrate a satisfactory percolation rate within the proposed septic system <br /> disposal field. <br /> Details and results of the percolation tests are summarized in the following table. <br /> Table 2. Percolation Test Summary <br /> Test No., Percolation Percolation Test Duration Comments <br /> Date Tested Test Rate (see notes) <br /> Depth (ft.) (minutes/inch) <br /> P1 Satisfactory <br /> 11-16-18 3.16 2.6 1 hr. <br /> Shallow Test pert. rate <br /> P2 Satisfactory <br /> 11-16-18 3.37 3.1 1 hr. <br /> Shallow Test pert. rate <br /> Note: A satisfactory percolation rate for a"shallow"test is greater than 1 min/in but less than or equal to 60 <br /> minutes per inch. <br /> 1 Requires 20' separation between bottom of dispersal system and ground water, or mitigation by system <br /> design or enhancement. <br /> Discussion of Percolation Test Results <br /> The soils within the percolation test areas have demonstrated satisfactory percolation <br /> rates for the use of standard septic systems utilizing leach lines and seepage pits in <br /> accordance with the requirements of the San Joaquin County Environmental Health <br /> Department. <br /> Because of the rapid percolation rates encountered, the San Joaquin County <br /> Environmental Health Department will require 20-foot separations from the bottom of <br /> the dispersal system to ground water (see Table 2). Ground water i anticipated to be <br /> encountered from 105 to 108 feet below ground surface at the Site consequently, no <br /> modifications to standard septic systems should be required. n <br /> Discussion of Septic System Sizing <br /> 1 <br /> P Y 9 <br /> Future septic system construction utilizing leach lines and seepage pits should follow <br /> the San Joaquin County On-Site Wastewater Treatment Systems Standards (2017) <br /> where applicable. <br /> LOGE 1816 Page 7 <br />