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Kooyman Property <br /> Our <br /> Page 8 of 10 <br /> ur Project Number: E071976 <br /> November 26, 2007 <br /> F! <br /> Measurement of the water level during the percolation test was from a fixed reference point on <br /> f the PVC casing using an electric well sounder with a depth accuracy of 1/100th foot. All <br /> 1 tabulated values on the field data sheet (appendix) are in decimal feet. After water drop was <br /> observed, the holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) <br /> of water above the bottom level of the percolation test hole. The readings were taken every 30 <br /> minutes for a period of four (4) hours. <br /> F) 6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report. <br /> A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth; a <br /> satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. <br /> A deep percolation test is defined as being between 3.5 and 25 feet in depth; a satisfactory <br /> percolation rate for a deep test is 30 min/in or less. One percolation test must demonstrate a <br /> satisfactory percolation rate within the proposed septic system disposal field of each parcel to <br /> utilize a standard septic system. Details of the percolation tests are summarized in the table <br /> below. <br /> Table 3. <br /> Summa of Percolation Tests <br /> Percolation Test'' Percolation Rate Test Duration 7Comments <br /> FD7ateTeste7d Depth(ft.) (minutes/inch) (see notes) <br /> P-1 (shallow) 3.5 3.33 4-hr Satisfactory percolation <br /> 11-29-07 rate <br /> Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. <br /> ii A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas g p of the site have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD for the use of a standard <br /> septic system. <br /> 6.8 Discussion of Septic System Sizing <br /> Septic System Construction should follow the San Joaquin County On-Site q ty Slte Wastewater Disposal <br /> r1Standardswhere applicable. <br /> 7.0 CONCLUSIONS <br /> PIn summary, percolation rates that meet the minimum EHD standards were achieved in the <br /> proposed septic disposal areas of each of the proposed parcels. The parcels appear suitable for <br /> F1the use of a standard septic system using shallow leach lines or a filter bed system. <br /> 0 <br /> 0 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 <br /> ©2007 Nei!R.Anderson&.4ssociales,Inc <br />