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Soil Borings <br /> On July 17, 2013, Live Oak excavated soil borings on each parcel of the Site for the <br /> purpose of conducting percolation tests. A shallow boring only was excavated on / <br /> Parcel 1, while shallow and deep borings were excavated on Parcel 2. The borings 15yi6'2, <br /> were four inches in diameter, 3.18, 3.28, and 7.85 feet deep, and were excavated by <br /> hand auger (Table 2). The locations of the borings are indicated on Plate 9. . 1� <br /> The soil in the borings was similar to that described by the Soil Survey. Sandy clay was <br /> encountered the borings to three feet below ground surface (bgs), followed by sandy, /S <br /> silty clay to a depth of seven feet bgs, followed by fine sand with silt to the full depth of l <br /> the deep hole. The log for the soil borings is presented in Plate 10. <br /> Discussion of Soil Lithology <br /> Based on the soil observed in the borings, there appears to be moderate potential for <br /> percolation in the test locations. Sandy soils generally have a much greater potential for <br /> percolation than fine-grained or cemented soils. However, a percolation test is the only <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 Parcel 1 of the Site. Shallow and deep <br /> percolation tests were conducted on Parcel 2. The soil borings discussed above were <br /> used for the percolation test holes (Plate 9). Percolation test procedures conformed to <br /> San Joaquin County Environmental Health Department policy. <br /> Preparation and Presaturation of Percolation Test Holes <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. 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 <br /> to be intact and dry. ° <br /> `� LOGE 1307 Page 5 <br />