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Table 2. Percolation Test Summary <br />Test No., Percolation Test Percolation Rate Test Duration Comments <br />Date Tested Depth (ft.) (minuteslinch) (see notes) <br />P1 <br />9/16/2022 2.39 6.25 4 hr. Satisfactor�r perc. <br />rate <br />Shallow Test <br />P2 <br />9/16/2022 1.94 31.25 4 hr. Satisfactory perc. <br />rate <br />Shallow Test <br />P3 <br />9/9/2022 2.23 1.46 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 min/in. <br />1 Per San Joaquin County Environmental Health Department, a rate between 5.0 and 30.0 min/in requires an <br />8 -foot separation between the bottom of dispersal system and ground water, or mitigation by system design <br />or enhancement. <br />2 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 near the existing and proposed septic disposal areas of the Site have <br />demonstrated satisfactory percolation rates for the use of standard septic systems in <br />accordance with the requirements of the San Joaquin County Environmental Health <br />Department. Each percolation test is considered representative of soils within an <br />approximate 100 -foot radius of the test location. <br />Because of the percolation rate between 5.0 and 30.0 min/in encountered in the test <br />hole on Parcel 1, the San Joaquin County Environmental Health Department will require <br />an 8 -foot separation from the bottom of the dispersal system to ground water, unless <br />mitigated by system design or enhancement. Because of the percolation rate between <br />1.0 and 5.0 min/in encountered in the test hole on Parcel 3, the San Joaquin County <br />Environmental Health Department will require a 20 -foot separation from the bottom of <br />the dispersal system to ground water, unless mitigated by system design or <br />enhancement. <br />Given the estimated depth to water of 30 feet, it is recommended that only a shallow <br />system (leach lines or a filter bed) be installed at the test location on Parcel 3. Systems <br />utilizing leach lines, filter beds, or leach lines with sumps should be acceptable at the <br />test locations on Parcels 1 and 2. <br />LOGE 2233 Page 8 <br />