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March 11, 2005 <br /> NOA Project Number: E040150A <br /> Table 5. <br /> Soil Boring Log for P-2. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-1.5 Dark brown,moist,clayey silt \1L. <br /> 1.5-2.5 Light brown,moist,clayey silt NIL <br /> 2.5-3 Light brown,moist,silty fine to medium sand Ski <br /> with some clay <br /> Table 6. <br /> Soil Boring Log for P-3. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-2 Dark brown,moist,clayey silt INIL <br /> 2-3 Light brown,moist,clayey silt with some sand NIL <br /> Table 7. <br /> Soil Boring Log for P-4. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-2 Medium dark brown,very moist,clay CL <br /> 2-3.5 Reddish light brown,moist,clayey silt with �fI <br /> medium sand <br /> Table 8. <br /> Soil Boring Log for P-5. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-2.75 Dark brown,moist,clayey silt NIL <br /> 2.75-3 Light brown,moist,clayey silt with some and NIL <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow and deep soils from on-site drilling indicates some potential for <br /> satisfactory percolation. A percolation test is the best method to determine the suitability of the <br /> soils. Please see the next section for percolation test results. Generally speaking, sandy soils have <br /> much greater potential for percolation than fine-grained soils. , <br /> 7 <br />