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L <br /> LJune 12,2006 <br /> NOA Project Number: E06061A <br /> LJ 5.2 Soil Boring Dimensions <br /> LThe soil boring was 3.28 feet deep, as noted above,and four inches in diameter. <br /> yr 5.3 Soil Lithology Observed <br /> Generally,the soil encountered in the boring was similar to the soils reported by the San Joaquin <br /> County Soil Survey for the area (USDA, 1992). The table below presents the log for the soil boring. <br /> V <br /> °i Soil Boring Lo <br /> Depth Interval (ft) Soil T Unified Soil Classification <br /> Mn edium browsand silt S9[ <br /> ` ✓5.4 Discussion of Soil Litholo <br /> A visual inspection of the soils from on-site drilling indicates some potential for satisfactory <br /> L percolation in the shallow soil zone. A percolation test is the best method to determine the <br /> suitability of the soils. Please see the next section for percolation test results. Generally speaking, <br /> sandy soils have much greater potential for percolation than fine-grained soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> �6.1 Percolation Test Location <br /> A site map indicating the location of the percolation test hole is included as Plate 1 of this report. <br /> L <br /> /"6.2 Number of Percolation Tests <br /> L "One shallow percolation test was conducted on the Site. <br /> L / <br /> I ✓6.3 Boring Preparation and Presaturation <br /> The soil boring was advanced on the Site with a four-inch diameter hand auger on May 31,2006. <br /> A 2-inch diameter PVC pipe with perforations on the bottom was used to measure the drop of <br /> water in the percolation test boring. Approximately 2 inches of"pea gravel' were placed in the <br /> 'L bottom of the open soil boring, then the PVC pipe was installed on top of the gravel. "Pea gravel' <br /> was backfilled in the annular space. <br /> r <br /> 8 <br /> L <br /> 6 '� <br />