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Sunrise Trucking—Soil Suitability Section Page 8 of 16 <br /> Our Project Number: NA157003G <br /> October 23, 2015 <br /> 1.6 Percolation Test Information <br /> ' 1.6.1 Percolation Test Locations <br /> See Section 1.5.1 <br /> 1.6.2 Number of Percolation Tests <br /> One percolation test(P1) in the area of the proposed septic leach field, at 3.5 feet bgs (P1), was <br /> conducted for soil characterization to aid in the septic system design. <br /> 1 1.6.3 Boring Preparation and Presaturation <br /> The soil boring was excavated on September 28, 2015. Approximately two (2) inches of "pea <br /> gravel' were placed in the bottom of the open hole. A 2.0-inch diameter PVC pipe with <br /> perforations towards the bottom was installed on top of the gravel and the annular space was <br /> backfilled with "pea gravel'. Presaturation of the percolation test hole occurred approximately 24 <br /> 1 hours prior to the day of testing (September 29, 2015). The depth of water used to pre-soak was <br /> 42 inches above the bottom of the boring. <br /> 1.6.4 Condition of Borings after Presaturation <br /> After the 24-hour soak period, the hole was found to be intact and dry on the day of testing <br /> (September 29, 2015). <br /> 1.6.5 Percolation Test Procedure <br /> The percolation test was conducted on September 29, 2015 in accordance with the requirements <br /> of the San Joaquin County EHD. The percolation test had a duration of 40 minutes. The last ten <br /> minutes of the test was observed by Ted Tasiopoulos, Registered Environmental Health <br /> Specialist (REHS), EHD. <br /> rMeasurement of the water level during the percolation test 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 hole was checked and refilled as necessary to maintain <br /> approximately 0.5 feet(6 inches)of water above the bottom level. The readings were taken every <br /> five minutes for a period of 40 minutes. <br /> ©2015 Neil O.Anderson&Associates,Inc. <br /> A Terracon Company <br />