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_ August 31, 2004 <br /> NOA Project Number: E04060A <br /> — 5.3 Soil Lithology Observed and Septic Applicability <br /> Generally, the soil encountered in the boring is similar to the soils reported by the San <br /> Joaquin County Soil Survey for the area (USDA, 1992). Table 5 presents the soil logs for the <br /> 3-foot deep soil borings. <br /> Table 5. <br /> Soil Boring Logs <br /> — Boring Depth Interval Soil Type Unified Soil Classification <br /> (ft) <br /> P-1 0-3 Brown sandy silt SM <br /> s P-2 0-3 Brown silty sand SM <br /> P-3 0-3 Brown silty sand,slightly cemented SM <br /> P-4 0-3 Brown sandy silt,slightly cemented SM <br /> P-5 0-3 Brown sandy silt,slightly cemented SM <br /> Mixed sand and silt soils often exhibit acceptable percolation rates. A more rapid percolation <br /> rate usually accompanies a greater percentage of sand. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Boring Locations <br /> Five shallow percolation tests were conducted on the Site. One passing test was conducted on <br /> each of the four non-road parcels (22, 23, 24, 25). The road parcels (43, 44) were not required <br /> to be tested. Please refer to the site plan for the exact percolation test ocations ate <br /> 6.2 Boring Preparation and Specifications <br /> Three shallow soil borings were advanced on the Site by hand auguring. The borings for P-1, <br /> P-2, and P-3 were advanced on July 22, 2004, the boring for P-4 was advanced on July 26, <br /> 2004, and the boring for P-5 was advanced on August 9, 2004. <br /> A 1.5-inch diameter PVC pipe with perforations on the bottom was used to measure the drop <br /> of water in the percolation test boring. Approximately 2 inches of "pea gravel" were placed in <br /> the bottom of the open soil boring, then the PVC pipe was installed on top of the gravel. <br /> Several feet of "pea gravel" were backfilled in the annular space. <br /> 10 <br />