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Insufficient <br />percolation* <br />P1, <br />1/19/2021 <br />Shallow Test <br />3.49 125 4 hr <br />P1, <br />1/19/2021 <br />Deep Test <br />Retested on <br />1/21/2021* 13.17 Inconsistent rate 1 hr. <br />16.40 <br />P1, <br />1/21/2021 <br />Deep Test <br />Satisfactory perc. <br />ratel 10.0 4 hr. <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 />Only one percolation test hole (shallow or deep) is required to pass for the location to be considered <br />acceptable for a standard septic system. <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. This <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 5.0 and 30.0 min/in encountered in the deep <br />test hole, the San Joaquin County Environmental Health Department will require an <br />eight-foot separation from the bottom of the dispersal system to ground water. Based <br />on maps reviewed, ground water is anticipated to be encountered approximately 85 to <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. A deep percolation test hole has a depth between 42 inches <br />and 25 feet; a satisfactory percolation rate for a deep test is greater than or equal to 1 <br />minute per inch (min/in) but less than or equal to 30 min/in drop. For the Site to utilize a <br />standard septic system, one percolation test (shallow or deep) must demonstrate a <br />satisfactory percolation rate within the proposed 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 />LOGE 20-59 Page 7