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Rausser Property Page 11 of 14 <br /> Our Project Number: E07121A <br /> August 8, 2007 <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 as Plate 1 in <br /> the appendix of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow percolation test was conducted on each parcel. A total of two shallow <br /> percolation tests was conducted on the property. <br /> 6.3 Boring Preparation and Presaturation <br /> Two shallow soil borings were drilled on the property using a hand auger on July 18, <br /> 2007, <br /> A 1.5-inch diameter PVC pipe with perforations on the bottom was used to measure the <br /> drop of water in the percolation test boring. Approximately 2 inches of "pea gravel' <br /> were placed in the bottom of the open soil boring, then the PVC pipe was installed on <br /> top of the gravel. "Pea gravel' was then used to backfill in the annular space. <br /> Presaturation of the percolation test holes occurred 24 hours prior to the percolation <br /> tests. The depth of water used to pre-soak was 12 inches above the bottom of the <br /> borings. <br /> 6.4 Condition of Borings After Presaturation <br /> After the 24-hour soak period, the presaturated shallow holes were found to be intact <br /> and dry on the day of testing. <br /> 6.5 Percolation Test Procedure <br /> Percolation tests were conducted for the shallow borings on Parcels 1 and 2 on July 19, <br /> 2007 in accordance with the requirements of the EHD. A percolation test with a <br /> duration of four hours was performed for each hole. The last half an hour was <br /> observed by Ms. Lisa Medina, Senior Registered Environmental Health Inspector, EHD. <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02007 Nei!O.Anderson&Associates.Inc. <br />