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Sunrise Trucking—Soil Suitability Section Page 9 of 16 <br /> Our Project Number: NAIS7003G <br /> October 23, 2015 <br /> I1.6.6 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. The percolation test must demonstrate a satisfactory <br /> percolation rate (less than or equal to 60 minutes per inch drop)within the existing septic system <br /> disposal field of a parcel to utilize a standard septic system. Details of the percolation tests are <br /> summarized in the table below. <br /> Table 2. <br /> Summary of Percolation Tests. <br /> Test No. Percolation Test Percolation Rate Test Duration Comments <br /> Date Tested Depth (ft.) (minutestinch) (see notes) <br /> P-1 j Satisfactory percolation <br /> 3.5 0.9 40-minutes <br /> 09-29-2015 rate <br /> Note: A satisfactor ercolatlon rate for a"shallow"test is less than or equa o minutes per inch. . <br /> 1.6.7 Discussion of Percolation Test Results <br /> The silty sand soils within the 0.75 to 3.5 foot range of the proposed septic disposal area at the <br /> site demonstrate a satisfactory percolation rate for a standard septic system per EHD <br /> requirements. <br /> 1.6.8 Discussion of Septic System Sizing <br /> In general, septic system construction should follow the San Joaquin County On-Site Wastewater <br /> Disposal Standards where applicable. The foregoing investigation and percolation test results <br /> indicate the site is suitable for a county specified shallow septic leach field. <br /> 02015 Neil O.Anderson&Associates,Inc. <br /> A Terracon Company <br />