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Goehring Property Page 6 of 10 <br /> Our Project Number: E07182A <br /> November 30, 2007 <br /> Table 6. <br /> Soil Boring Log Parcel 4. <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0-1' Brown sandy silt with clay Sm <br /> 1-2' Silty gravel with some cobbles Sm <br /> Auger refusal <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the soils from on-site drilling indicates little potential for percolation <br /> because of the cemented gravels, cobbles and fine-grained nature of the soils. A percolation <br /> test is the best method to determine the suitability of the soils for a septic disposal area. Please <br /> see the next section for percolation test results. Generally speaking, coarser-grained soils have <br /> much greater potential for percolation than fine-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 holes is included Plate 1 in the <br /> appendix of this report. <br /> 6.2 Number of Percolation Tests <br /> Two (2) percolation tests were conducted on each parcel of the Site for a total of eight (8) <br /> percolation tests conducted on the property. <br /> 6.3 Boring Preparation and Presaturation <br /> Eight soil borings were advanced on the property with both a shallow hand auger and a truck <br /> mounted deep rock augur rig on December15, 2007. <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 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 <br /> gravel"was then used to backfill in the annular space. <br /> Presaturation of the percolation test holes occurred approximately 24 hours prior to the day of <br /> percolation testing. The depth of water used to pre-soak was 12 inches above the bottom of the <br /> boring. <br /> 6.4 Condition of Borings After Presaturation <br /> After the 24-hour soak period, the presaturated holes were found to be intact and dry on the <br /> day of testing. <br /> --44 <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 ©2007 Neil O.Anderson&Associates,Inc <br />