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January 26, 2006 <br /> NOA Project Number: E05091B <br /> Table 4. <br /> Soil Boring Log. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-3 Medium brown,sandy At SIM <br /> i/ 5.4 Discussion of Soil Lithology <br /> A visual inspection of the soils from on-site drilling indicates possible potential for percolation <br /> because of the coarse-grained nature of the soils. A percolation test is the best method to determine <br /> the suitability of the soils for a septic disposal area. Please see the next section for percolation test <br /> results. Generally speaking, sandy soils have much greater potential for percolation than fine- <br /> grained or cemented soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> /6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test hole is included as Plate 1 in the appendix <br /> of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow percolation test was conducted on the southern portion of the subject property for a <br /> total of one shallow percolation test. <br /> 6.3 Boring Preparation and Presaturation <br /> One shallow boring was advanced on the site on December 6, 2005 using a hand auger. A 1.5-inch <br /> diameter PVC pipe with perforations on the bottom was used to measure the drop of water in the <br /> percolation test boring. Approximately 2 inches of"pea gravel' were placed in the bottom of the <br /> open soil boring, then the PVC pipe was installed on top of the gravel. "Pea Gravel'was then used <br /> to backfill in the annular space. <br /> 9 <br />