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method for determining the suitability of the soils for a septic disposal area. Percolation <br /> test results are discussed in the following section. <br /> Percolation Test <br /> One shallow percolation test was conducted on each parcel t e Site;-t a shallow soil <br /> borings discussed above were used for the percolation test ho s{Plate 2). colation <br /> test procedures conformed to San Joaquin County Environme tal Heafth D artment <br /> policy. <br /> Preparation and Presaturation of Percolation Test Moles <br /> After the borings were advanced by hand auger and the soils logged, the test holes <br /> were completed for the percolation tests. Approximately one inch of pea gravel was <br /> placed in the bottom of each open soil boring, followed by a 1.5-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 holes approximately 24 hours prior to the <br /> percolation tests. The holes were 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 shallow holes were <br /> found to be intact and dry. <br /> Percolation Test Procedure <br /> Live Oak conducted the percolation tests for the borings on June 28, 2011. Due to silty <br /> soil conditions, a four-hour test was selected. Water level measurements were taken <br /> every half-hour during this four-hour period_ Ted Tasiopoulos, Senior Registered <br /> Environmental Health Specialist at the San Joaquin County Environmental Health <br /> Department, observed the last half-hour of each test. <br /> An electronic well sounder with a depth accuracy of 11100' 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 six inches above the bottom of the hole. <br /> Percolation Test Results <br /> The completed percolation test forms are included in Appendix 3 of this report. The <br /> forms were signed by Mr. Tasiopoulos and indicate a percolation rate for each hole <br /> based on the final 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 1110 Page 5 <br />