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Dog Kennel Building-Soil Suitability Study Page 11 of 13 <br /> Our Project Number: NA157000G <br /> June 2,2015 <br /> 6.6 Percolation Test Forms and Results <br /> The completed percolation test form with Ted Tasiopoulos's REHS verification signature is <br /> included in Appendix C of this report. A shallow percolation test is defined by the EHD as being <br /> between 36 and 42 inches in depth; a satisfactory percolation rate for a shallow test is less than <br /> -- or equal to 60 minutes per inch drop. The percolation test must demonstrate a satisfactory <br /> percolation rate within the existing septic system disposal field of a parcel to utilize a standard <br /> septic system. Details of the percolation tests are summarized in the table below. <br /> Table 2. <br /> Summary of Percolation Tests. <br /> Test No. Percolation Percolation Test Comments <br /> Date Tested Test Rate Duration (see notes) <br /> Depth (ft.) (minutes/inch) <br /> P-1 <br /> 3.42 41.67 4-hr Satisfactory <br /> 05-22-2015 percolation rate <br /> Note: A satisfactory percolation rate for a "shallow"test is less than or equal to 60 minutes per <br /> inch. <br /> 6.7 Discussion of Percolation Test Results <br /> The silty clays within the 0 to 3.42 foot range demonstrate a satisfactory percolation rate in <br /> accordance with EHD requirements. <br /> 4 6.8 Discussion of Septic System Sizing <br /> The foregoing investigation and percolation test results indicate the site is suitable for the <br /> existing septic system, which is compliant with San Joaquin County On-Site Wastewater <br /> Disposal Standards. <br /> 7.0 CONCLUSIONS AND RECOMMENDATIONS <br /> In summary, percolation rates that meet the minimum EHD standards were achieved at a <br /> shallow depth (3.42 feet bgs) in the proposed septic leach field area. The parcel appears <br /> suitable for the use of a septic system designed for the intended usage. All final septic system <br /> construction should follow the San Joaquin County On-Site Wastewater Disposal Standards <br /> where applicable. <br /> Groundwater sampled from a drinking water well at the site was analyzed for nitrate, EDB, and <br /> DBCP, and all were reported below the limit for human health hazard. <br /> ©2015 Neil O.Anderson&Associates,Inc.A Terracon Company <br />