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February 10, 2005 <br /> NOA Project Number: E050.01A <br /> _ Table 4. <br /> Soil Boring Log for B-1. <br /> Depth Interval (ft) - Soil Type Unified Soil Classification. <br /> 0-3 Brown fine to medium sand, moist. SP <br /> 3-10 Brown fine sand with lenses of cemented SP <br /> sand. <br /> 10-15 Brown fine sand with lenses of rust SP <br /> staining and small areas of black <br /> ___magnetite. <br /> Note: Conditions were comparable in P-1,which was near B-1. <br /> f 1 5.4 Discussion of Soil Lithology <br /> i <br /> A visual inspection of the soil indicates-the potential for fast percolation rates. Please see the next <br /> section for percolation test results. Generally speaking,-sandy soils have much greater potential for <br /> percolation than fine-grained or cemented soils. <br /> No ground water was encountered to a depth of 15 feet. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> 1 <br /> A site map indicating the location of the percolation test hole is included as Platexin the appendix <br /> of this report. <br /> 6.2 Number of Percolation Tests <br /> w One shallow percolation test were conducted on the Site. No deep test was performed. <br /> } 6.3 Boring Preparation and Presaturation <br /> A total of one shallow percolation test boring was excavated on January 28,2005. <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. Several feet <br /> of"pea gravel" were backfilled in the annular space. <br /> R <br /> 7 <br />