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April'l8, 2005 _ <br /> NOA Project Number: E05008B <br /> - Table 4. <br /> Soil Boring Log for P-1. <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> CL <br /> 0-1.0 1ledium brown,moist,clayey silt <br /> 1.0-2.5 Light brown,moist,clayey silt witb sand ML <br /> 2.5-3.0 Light brown,moist,silty fine.to medium sand SM <br /> Table 5. <br /> Soil Boring Log for P-2. <br /> Depth Interval Soil Type Unified Soil Classification <br /> 0-1.0 - Dark brown,moist,clayey silt <br /> ML <br /> 1.0-3.0 Li ht.brown;moist;clayey silt with some sand ML <br /> Table 6. <br /> Soil Borin Log for P-3. <br /> �- aDepth Interval (ft) _ rn Soil Type = Unified Soil Classification <br /> A0-0"5 - Dark brown,very moist,clay with fine to medium CL <br /> sand <br /> 0.5-3.5: 'Li ht brown,moist,C121a silt with sand ML <br /> Table 7. <br /> Soil Bori Lo� for P-4.. <br /> Depth Interval(ft) = Soil Type Unified Soil Classification <br /> 0-1.5 Medium brown,moist,clay with fine to medium CL <br /> sand <br /> I1.5-3.0 ht brown,moist;cla e silt with some sand ML <br /> I <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 for use as <br /> a septic disposal field. Please see the next section for percolation test results. Generally speaking, <br /> sandy soils havemuch greater potential for percolation than fine-grained soils. <br />