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L <br /> LNovember 21, 2006 <br /> NOA Project Number: E06045B <br /> 5.4 Discussion of Soil Lithology <br /> LA visual inspection of the shallow soils from on-site drilling indicates little potential for percolation <br /> because of the fine-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,coarser-grained soils have much greater potential for percolation than60 <br /> fine-grained or cemented soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> L6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test holes is included as Plate 1 i�the appendix <br /> of this report. <br /> 6.2 Number of Percolation Tests <br /> LOne shallow percolation test was conducted on each parcel.A totalotcvo s allow percolation tests <br /> were conducted on the property. \\ <br /> L6.3 Boring Preparation and Presaturation <br /> L One shallow boring was drilled on pazc 1 two and on` deep Soil boring were drilled one parcel one. <br /> e o holes were advanced on the sit wt a four h hand augur on October 26,2006. <br /> L 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 /> was then used to backfill in the annular space. <br /> Presaturation of the percolation test holes occurred 24 hours before the percolation testes were <br /> performed. The depth of water used to pre-soak was 12 inches above the bottom of the boring. <br /> 6.4 Condition of Borings After Presaturation <br /> 6. After the 24-hour soak period,the two presaturated holes were found to brota t andry n the <br /> days of testing. �_ <br /> im <br /> L <br /> 7 <br /> 6m <br /> L <br />