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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 /> 5/28/2019 3.25 5.32 4 hr. Satisfactor�r 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 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 a <br /> satisfactory percolation rate 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 test <br /> hole, the San Joaquin County Environmental Health Department will require an eight- <br /> foot separation from the bottom of the dispersal system to ground water (see Table 2). <br /> Ground water is anticipated to be encountered approximately 28 to 40 feet below <br /> ground surface at the Site; consequently, no modifications to standard, shallow septic <br /> systems should be required. <br /> Discussion of Septic System Sizing <br /> Septic system construction utilizing leach lines or a filter bed should follow the San <br /> Joaquin County On-Site Wastewater Treatment Systems Standards (2017) where <br /> applicable; additional recommendations related to nitrate mitigation will be discussed in <br /> the following pages. <br /> LOGE 1925 Page 7 <br />