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Dog Kennel Building-Soil Suitability Study Page 10 of 13 <br /> Our Project Number: NA157000G <br /> June 2, 2015 <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> A site map indicating the location of the percolation test hole is included as Plate 2 in Appendix <br /> A of this report. <br /> 6.2 Number of Percolation Tests <br /> One percolation test, at 3.42 feet bgs (P1), was conducted on the project site (within the <br /> proposed septic leach field area). P1 was recorded for county review, which is discussed in <br /> more detail below. The percolation test was performed for soil characterization to verify that on- <br /> site soils are suitable for installation of the proposed septic system with leach field. <br /> 6.3 Boring Preparation and Presaturation <br /> The soil boring was advanced on the subject property with a four inch hand auger on May 15, <br /> 2015. Approximately two (2) inches of "pea gravel" were placed in the bottom of the open soil <br /> borings, then a 2.0-inch diameter PVC pipe with perforations on the bottom was installed on top <br /> of the gravel in the boring. "Pea gravel" was then used to backfill in the annular space. <br /> Presaturation of the percolation test hole occurred following the installation of the percolation <br /> test. The depth of water used to pre-soak was 36 inches above the bottom of the boring. <br /> 6.4 Condition of Borings after Presaturation <br /> After the soak period, the presaturated hole was found to be intact and dry on the day of testing <br /> (May 22, 2015). <br /> 6.5 Percolation Test Procedure <br /> Percolation tests were conducted for the borings on May 22, 2015 in accordance with the <br /> requirements of the San Joaquin County EHD. The percolation test had a duration of four <br /> hours. The last half an hour of the test was observed by Ted Tasiopoulos, Registered <br /> Environmental Health Specialist (REHS), EHD. <br /> Measurement of the water level during the percolation tests was from a fixed reference point on <br /> the PVC casing using a calibrated Solinst electric water level detector with a depth accuracy of <br /> 0.01 feet. All tabulated values on the field data sheet (Appendix C) are in decimal feet. After <br /> water drop was observed, the holes were checked for refill. The holes were refilled as <br /> necessary to maintain approximately 0.5 feet (6 inches) of water above the bottom level of the <br /> percolation test holes. The readings were taken every 30 minutes for a period of four (4) hours. <br /> ,-44 <br /> ©2015 Neil O.Anderson&Associates, Inc.A Terracon Company <br />