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Percolation Test Procedure <br /> Live Oak conducted the percolation test for the boring on April 21, 2020. Due to initial <br /> percolation rates observed, a one-hour test was selected. Water level measurements <br /> were taken every 10 minutes during the one-hour period. The last 30 minutes of the <br /> test were observed by Daria Afonskaia, Registered Environmental Health Specialist at <br /> the San Joaquin County Environmental Health Department. <br /> An electronic well sounder with a depth accuracy of 1/100th foot was utilized for the <br /> water level measurements. The water level was measured against a fixed reference <br /> point on the well casing. Measurements were recorded on the data sheet in decimal <br /> feet. When necessary after measuring the water level, the hole was refilled with water <br /> to a level of approximately six inches above the bottom of the hole. <br /> Percolation Test Results <br /> The completed percolation test form is included in Appendix 3 of this report. The form <br /> was signed by Ms. Afonskaia and indicates a percolation rate for the hole based on the <br /> least water drop observed. <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. For the Site to utilize a standard septic system, one <br /> percolation test must demonstrate a satisfactory percolation rate within the proposed <br /> septic system disposal field. <br /> Details and results of the percolation test 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 /> 4/21/2020 3.46 20.8 1 hr. Satisfactor�r 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 minutes per <br /> inch. <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 /> LOGE 20-15 Page 7 <br />