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L <br /> ` January 19, 2006 <br /> NOA Project Number: E05161A <br /> L of the one-hour percolation test was observed by Mr. David Van Dyne,Senior Registered <br /> Environmental Health Specialist,EHD. <br /> L Measurement of the water level during the percolation test was from a fixed reference point on the <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 /> L bottom level of the percolation test hole. The readings were taken approximately every 10 minutes <br /> for a period of one hour. <br /> L6.6 Percolation Test Forms and Results <br /> LThe completed percolation test forms are 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 /> L satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. <br /> Details of the percolation tests are summarized in Table 5. <br /> Table 5. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test <br /> Date Tested Test Depth (ft) (minutes/inch) Duration Comment <br /> P-1 shallow,2-16-94 3.0 23 4-ht Satisfactory percolation rate <br /> (Parcel 1) <br /> P-2 shallow,12-7-05 313 3.3 1-hr Satisfactory percolation rate <br /> (Parcel 2) <br /> P-3 shallow,2-16-94 3.0 59 4-hr Satisfactory percolation rate <br /> Parcel 3 <br /> Note: A satisfactory percolation rate for a"shallow' test is less than or equal to 60 minutes per inch. <br /> r <br /> 6.7 Discussion of Percolation Test Results <br /> 6. The soils within the sewage disposal areas of the proposed parcels have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD. The soils of the Site appear to be <br /> suitable for a standard septic system. <br /> V <br /> 6.8 Discussion of Septic System Sizing <br /> LSeptic system construction should follow the San Joaquin County On-Site Wastewater Disposal Standards <br /> where applicable. <br /> L <br /> 9 <br /> L "'44 <br /> L <br />