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for a septic disposal area. Percolation test results are discussed in the following <br /> section. <br /> Percolation Test <br /> A shallow percolation test was conducted in the proposed septic disposal area of the <br /> Site. The soil boring discussed above was used for the percolation test hole. <br /> Percolation test procedures conformed to San Joaquin County Environmental Health <br /> Department policy. <br /> Preparation and Presaturation of Percolation Test Holes <br /> After the boring was advanced by hand auger and the soil logged, the test hole was <br /> completed for the percolation testing. Approximately two inches of pea gravel were <br /> placed in the bottom of the open soil boring, followed by a 2.0-inch diameter PVC pipe <br /> with perforations on the bottom. Pea gravel was then used to backfill a few inches of <br /> the annular space. <br /> Live Oak presaturated the percolation test hole approximately 24 hours prior to the <br /> percolation testing. The hole was filled with water to a height of 12 inches above the <br /> bottom of the boring for the presaturation. On the day of testing, the hole was found to <br /> be intact and dry. <br /> Percolation Test Procedure <br /> Live Oak conducted the percolation test for the boring on March 31, 2021. Due to the <br /> soil type present, a four-hour test was selected. Water level measurements were taken <br /> every 30 minutes during the four-hour period. The last 30 minutes of the test were <br /> observed by Daria Afonskaia, Registered Environmental Health Specialist at the San <br /> 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, each 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 Mr. 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 /> LOGE 2118 Page 6 <br />