Laserfiche WebLink
f <br /> Fj `° <br /> 0 April.l, 2005 = <br /> NOA Project Number: E05034A <br /> Table 4:: <br /> Soil Boring Log.- <br /> Depth Interval(ft) Soil Type - Unified Soil Classification <br /> — 0-1.0 Medium brown,moist,silt with sand. CL <br /> 1.0-3.0 ht brown,moist,very sandy silt with some clay CL <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow soils from on-site drilling indicates possible potential for <br /> °percolation'because of the clayey nature of the sails. A percolation test is the best method to <br /> determine the suitability of the soils.- Please see the next section for percolation test results. <br /> x Generally speaking, sandy soils Have much greater potential for percolation than fine-grained or <br /> cemetited soils. _ <br /> 6.0 PERCOLATION TEST.INFORMATION_ . <br /> 1/ 6.1 Percolation.Test Locations - <br /> A site map indicating the locations of the percolation test-holes 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 Site. <br /> Fi / 6.3 Boring Preparation and Presaturation <br /> A total of one shallow soil borings was advanced on the Site with a hand augur on March 18, 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 2inches 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 on Sunday,March 20, 2005. The depth of water <br /> used to pre-soak was 12 inches above the bottom of the borings. <br /> 8 <br />