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septic system disposal field. Details and results of the percolation test are summarized <br /> 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 /> P1, <br /> 8/7/2019 3.26 2.38 1 hr. Satisfactor�r perc. <br /> Shallow Test rate <br /> P1, <br /> 8/7/2019 3.49 2.19 1 hr. Satisfactory perc. <br /> Shallow Test rate <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 1.0 and 5.0 min/in requires a <br /> 20-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 areas of the Site have demonstrated <br /> satisfactory percolation rates for the use of septic systems in accordance with the <br /> requirements of the San Joaquin County Environmental Health Department. <br /> Because of the percolation rate between 1.0 and 5.0 min/in encountered in the test <br /> hole, the San Joaquin County Environmental Health Department will require a 20-foot <br /> separation from the bottom of the dispersal system to ground water, or mitigation by <br /> system design or enhancement (see Table 2). Ground water is anticipated to be <br /> encountered approximately 32 feet below ground surface at the Site, according to the <br /> Well Completion Report; as a result, no modification to standard shallow septic systems <br /> should be required. <br /> Discussion of Septic System Sizing <br /> Septic system construction utilizing leach lines or filter beds should follow the San <br /> Joaquin County On-Site Wastewater Treatment Systems Standards (2017) where <br /> applicable. <br /> LOGE 1938 Page 8 <br />