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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-S <br /> 8/17/2020 3.40 35.7 4 hr. Satisfactory perc. <br /> rate <br /> Shallow Test <br /> P1-D <br /> 8/17/2020 22.73 11.4 4 hr. Satisfactory perc. <br /> 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 minutes per <br /> inch. A satisfactory percolation rate for a "deep" test is greater than 1 but less than or equal to 30 minutes <br /> per inch. <br /> 1 Per San Joaquin County Environmental Health Department, a rate between 5.0 and 30.0 min/in requires an <br /> eight-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 within the proposed sewage disposal area of the Site have demonstrated <br /> satisfactory percolation rates for the use of a standard septic system in accordance with <br /> the requirements of the San Joaquin County Environmental Health Department. <br /> Because of the percolation rate between 5.0 and 30.0 min/in encountered in the deep <br /> test hole, the San Joaquin County Environmental Health Department may require an <br /> eight-foot separation from the bottom of the dispersal system to ground water, or <br /> mitigation by system design or enhancement. Ground water is anticipated to be <br /> encountered approximately 129 to 135 feet below ground surface at the Site; as a <br /> result, no modification to a standard septic system should be required. <br /> Discussion of Septic System Sizing <br /> Septic system construction utilizing leach lines and seepage pits should follow the San <br /> Joaquin County On-Site Wastewater Treatment Systems Standards (2017) where <br /> applicable. <br /> LOGE 20-27 Page 7 <br />