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Percolation Test Results <br />The completed percolation test form is included in Appendix 3 of this report. The form <br />was signed by Mr. Girardi and indicates a percolation rate for the hole based on the final <br />water drop observed. <br />Per San Joaquin County Environmental Health Department's definition, a shallow <br />percolation test hole has a depth between 18 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 hole must demonstrate a satisfactory percolation rate within the <br />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 />P1 <br />3/24/2022 <br />Shallow Test <br />2.15 8.9 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 min. per in. <br />Discussion of Percolation Test Results <br />The soils in the proposed septic 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 an approximate 100-foot <br />radius of the test location. <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 2219 Page 7