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Percolation Test Procedure <br />Live Oak conducted the percolation test for the boring on March 22, 2021. Due to the <br />initial percolation rate observed, a one-hour test was selected. Water level <br />measurements were taken every ten minutes during the one-hour period. The last 30 <br />minutes of the test were observed by Aldara Salinas, Registered Environmental Health <br />Specialist at 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. Salinas 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 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 />P1-5, <br />3/22/2021 <br />Shallow Test <br />3.50 2.1 1 hr. Satisfactoy 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 />LOGE 2114 Page 6