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Brovelli Woods Page 6 of 9 <br /> Our Project Number: LGS080537 <br /> August 31, 2008 <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 the <br /> appendix of this report. <br /> 6.2 Number of Percolation Tests <br /> One (1) shallow percolation test was conducted on each parcel for a total of two (2) shallow <br /> percolation tests conducted on the property. <br /> 6.3 Boring Preparation and Presaturation <br /> The soil borings were advanced on the property with a hand auger on August 26, 2008. <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 was placed in the <br /> bottom of the open soil boring and the PVC pipe was then 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 /> testing. 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 /> After the 24-hour soak period, the presaturated holes were found to be intact and dry on the <br /> day of testing. <br /> 6.5 Percolation Test Procedure <br /> Percolation tests were conducted for the borings on August 27 and September 2, 2008 in <br /> accordance with the requirements of the EHD. A percolation test with a duration of four (4) <br /> hours was performed for the test. The last half hour of the test was observed by Lisa Medina, <br /> Registered Environmental Health Specialist, EHD. <br /> Measurement of the water level during the percolation test was from a fixed reference point on <br /> the PVC casing using an electric well sounder with a depth accuracy of 1/100th of a foot. All <br /> tabulated values on the field data sheet are in decimal feet. After water drop was observed, <br /> the holes were checked for refill. The refill level was approximately 0.5 feett (6 inches) of <br /> water above the bottom level of the percolation test hole. The readings were taken every 30 <br /> minutes for a period of four hours. <br /> '-*44■� <br /> 902 Industrial Way• Lodi,CA 95240.209.367.3701 • Fax 209.369.4228 (02008 Neil D.Anderson&Associates,Inc <br />