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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, Insufficient perc. <br />10/22/2021 2.84 125 4 hr. <br />Shallow Test rate <br />P1 -D, Satisfactory perc. <br />10/22/2021 18.89 2.45 1 hr. rate <br />Deep Test <br />P2 -S, <br />4/11/03 3.33 --- 4 hr. Failed' <br />Shallow Test <br />P2 -D, Satisfactory perc. <br />4/11/03 11.33 4.0 4 hr. 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 Only one boring (shallow or deep) is required to pass for the parcel to be considered suitable for a standard <br />septic system. <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 on both proposed parcels of the Site have demonstrated satisfactory <br />percolation rates for the use of standard septic systems in accordance with the <br />requirements of the San Joaquin County Environmental Health Department. Each <br />percolation test is considered representative of soils within a 100 -foot radius of the test <br />location. <br />Because of the percolation rate between 1.0 and 5.0 min/in encountered in the deep <br />test holes, the San Joaquin County Environmental Health Department will require a 20 - <br />foot separation from the bottom of the dispersal systems to ground water. Based on the <br />predicted depth to water of 75 to 85 feet, no modification to standard systems should be <br />necessary. <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. No construction is planned at this time. <br />LOGE 2150 Page 8 <br />