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Soil Borings . On February 28, 2017, Live Oak excavated a shallow soil boring on the Site for the purpose of conducting a percolation test. The boring was four inches in diameter, 3.14 feet deep, and was excavated by hand auger. The location of the boring, in the proposed septic disposal area for the new clubhouse, is indicated on Plate 8. A second, adjacent boring was advanced to a depth of eight feet for the purpose of soil profiling and determining depth to first ground water. The soil in the borings was similar to that described by the Soil Survey. At the percolation test location and nearby ground-water boring, peat was encountered to a depth of 1.6 feet below ground surface (bgs), followed by fat clay to a depth of seven feet bgs, followed by peat to the full depth of the boring (eight feet bgs). The log for the soil borings is presented in Plate 10. Discussion of Soil Lithology Based on the soil observed in the borings, there appears to be moderate potential for percolation of the surface soils. Sandy soils generally have a much greater potential for percolation than fine-grained or cemented soils. However, a percolation test is the only accepted method for determining the suitability of the soils for a septic disposal area. Percolation test results are discussed in the following section. Percolation Test • On shallow percolation test was conducted on the Site; the shallow soil boring scussed above was used for the percolation test hole. Percolation test procedures conformed to San Joaquin County Environmental Health Department policy. Preparation and Presaturation of Percolation Test Holes After the boring was advanced by hand auger and the soil logged, the test hole was completed for the percolation testing. Approximately..2 inches of pea gravel were placed in the bottom of the open soil boring, followed by a 2.0-inc h diameter PVC pipe with perforations on the bottom. Pea gravel was then used to backfill a few inches of the annular space. Live Oak presaturated the percolation test hole approximately 24 hours prior to the percolation testing. The hole was filled with water to a height of 12 inches above the bottom of the boring for the presaturation. On the day of testing, the percolation test hole was found to be intact and dry. LOGE 1708 Page 6 •