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Percolation Test Results <br /> The completed percolation test forms are included in Appendix 3 of this report. The <br /> forms were signed by Mr. Ahmed and indicate a percolation rate for each hole based on <br /> the final water drop observed. <br /> Per San Joaquin County Environmental Health Department's definition, a shallow <br /> percolation test hole has a depth between 36 and 42 inches; a satisfactory percolation <br /> rate for a shallow test is greater than or equal to 1 minute per inch (min/in) but less than <br /> or equal to 60 min/in drop. For the Site to utilize a standard septic system, one <br /> percolation test must demonstrate a satisfactory percolation rate within the proposed <br /> septic system disposal field. <br /> Details and results of the percolation testing are summarized 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 /> PI-S <br /> 2/22/2019 3.06 5.2 4 hr. Satisfactory pert. <br /> Shallow Test rate <br /> P2-S <br /> 2/22/2019 3.04 6.9 4 hr. Satisfactory pert. <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 and 30 min/in requires 8' <br /> separation between the bottom of dispersal system and ground water, or mitigation by system design or <br /> 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 /> Due to the percolation rates between five and 30 min/in encountered in the test holes, <br /> the San Joaquin County Environmental Health Department will require an eight-foot <br /> separation from the bottom of the dispersal system to ground water (see Table 2). <br /> Ground water is anticipated to be encountered from 65 to 75 feet below ground surface <br /> at the Site; consequently, no modifications to standard septic systems should be <br /> required. <br /> LOGE 1907 Page 7 <br />