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Soil Borings <br /> On October 9 through 11, 2013, Live Oak excavated one shallow soil boring on each <br /> parcel of the Site for the purpose of conducting percolation tests (four tests total). The <br /> borings were four inches in diameter, 3.15 to 3.35 feet deep, and were excavated by (5-,2)6 v) <br /> hand auger (Table 2). The locations of the borings are indicated on Plate 9. <br /> The soil in the borings was similar to that described by the Soil Survey. Gravelly silt, <br /> silty clay, and fine sand were encountered in the borings. The logs for the soil borings <br /> are presented in Plate 10. <br /> Discussion of Soil Lithology <br /> Based on the soils observed in the borings, there appears to be moderate potential for <br /> percolation in the test location. Sandy soils generally have a much greater potential for <br /> percolation than fine-grained or cemented soils. However, a percolation test is the only ( 5�� <br /> accepted method for determining the suitability of the soils for a septic disposal area. <br /> Percolation test results are discussed in the following section. <br /> Percolation Test <br /> A shallow percolation test was conducted on each proposed parcel of the Site. The soil <br /> borings discussed above were used for the percolation test holes (Plate 9). Percolation <br /> test procedures conformed to San Joaquin County Environmental Health Department l <br /> policy. <br /> Preparation and Presaturation of Percolation Test Hole <br /> After the borings were advanced by hand auger and the soils logged, each soil boring <br /> was completed for the percolation test. 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 /> C t" <br /> Live Oak presaturated the percolation test holes approximately 24 hours prior to the <br /> percolation tests. Each 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 holes were found 6, RFs <br /> to be intact and dry. l <br /> LOGE 1323 Page 7 <br />