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F <br /> FFebruary 28,2007 <br /> NOA Project Number: E07023A <br /> II February 13, 2007 in accordance with the requirements of the EHD. A percolation test with a <br /> duration of four hours was performed. The last half hour of the 4-hour percolation test was <br /> �j observed by Ms.Amanda Bortien, EHD. <br /> j Measurement of the water level during the percolation test was from a fixed reference point on theF! <br /> PVC casing using an electric well sounder with an depth accuracy of 1/100th foot. All tabulated <br /> values on the field data sheet (appendix) are in decimal feet. After water drop was observed, the <br /> holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) of water above the <br /> Fbottom level of the percolation test hole. The readings were taken every 30 minutes for a period of <br /> four hours. <br /> F6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report. <br /> F1 <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. A <br /> deep percolation test is defined as being between 3:5 and 25 feet in depth; a satisfactory percolation <br /> rate for a deep test is less than or equal to 30 minutes per inch drop. One percolation test must <br /> demonstrate a satisfactory percolation rate within the proposed septic system disposal field of each <br /> Fi parcel to utilize a standard septic system. Details of the percolation tests are summarized in Table 5. <br /> Table 5. j <br /> 1 <br /> Summary of Percolation Tests. <br /> r <br /> Test No., Percolation Percolation Rate Tes Comment <br /> Date Tested Test Depth(ft) (minutes/inch) D anon (see notes) <br /> Parcel 1,Shallow <br /> 2-8-07 3.32 5.0 4 hr. Satisfactory Percolation Rate <br /> Parcel Shallow <br /> 2-113-07 3.25 5.5 4 hr. Satisfactory Percolation Rate <br /> Note: A satisfactory percolation rate for a"shallow'test is less than or equal to 60 minutes per inch.A satisfactory <br /> 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 /> t <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation <br /> - rate in accordance with the requirements of the EHD for the use of a standard septic system. <br /> � a <br /> 6.8 Discussion of Septic System Sizing <br /> Septic System Construction should follow the San Joaquin County On-Site Wasteivater Disposal <br /> Standards where applicable. <br /> { <br />