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ow <br /> ..i <br /> March 24, 2005 <br /> NOA Project Number: E05025A <br /> Table 6. <br /> Soil Boring Log for P-1. <br /> Depth Interval(ft) Soil Type Unwed Soil Classification <br /> 0-3 Medium brown,moist,coarse medium sand with SM <br /> silt <br /> Table 7. <br /> Soil Boring Log for P-1. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-3 Medium brown,moist,coarse medium sand with SM <br /> silt <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow soils from on-site drilling indicates some potential for satisfactory <br /> percolation. A percolation test is the best method to determine the suitability of the soils. Please <br /> see the next section for percolation test results. Generally speaking, sandy soils have much greater <br /> potential for percolation than fine-grained soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> +i A site map indicating the locations of the percolation test holes is included as Plate 1 of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow percolation test was conducted on each proposed parcel of the Site, for a total of two <br /> shallow percolation tests. <br /> 6.3 Boring Preparation and Presaturation <br /> �.. The soil borings on Parcels 1 and 2 were advanced on the Site with a four inch diameter hand auger <br /> on March 14, 2005. <br /> A 1.5-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 /> bottom of the open soil boring, then the PVC pipe was installed on top of the gravel. "Pea gravel" <br /> .o was backfilled in the annular space. <br /> 8 <br />