Laserfiche WebLink
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, <br />6/17/2021 <br />Shallow Test <br />3.24 4.72 4 hr. Satisfactory perc. <br />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 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 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. The <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 test <br />hole, the San Joaquin County Environmental Health Department will require a 20-foot <br />separation from the bottom of the dispersal systems to ground water. Based on the <br />predicted depth to water of 58 to 63 feet, no modification to standard systems should be <br />necessary. <br />Discussion of Septic System Sizing <br />Septic system construction utilizing leach lines with seepage pits should follow the San <br />Joaquin County On-Site Wastewater Treatment Systems Standards (2017) where <br />applicable. <br />LOGE 2132 Page 7