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February 22, 2006 <br /> NOA Project Number: E06010A <br /> Measurement of the water level during the percolation test was from a fixed reference point on the <br /> r 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 /> bottom level of the percolation test hole. The readings were taken approximately every half hour <br /> for the four-hour percolation test and approximately every ten minutes for the one-hour percolation <br /> test. <br /> { /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 /> 1 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 30 min/in or less. One percolation test must demonstrate a satisfactory <br /> percolation rate within the proposed septic system disposal field to utilize a standard septic system. <br /> Details of the percolation tests are summarized in the table below. <br /> rtSummary of Percolation Test. <br /> i Test No., Percolation Percolation Rate Test Comment <br /> 1 Date Tested Test Depth(ft) (minutes/inch) anon (see notes) <br /> k P-1 shallow,2-16-06 3.08 2fLI <br /> Unsatisfactory rate,failed. <br /> t <br /> s P-1 deep,2-16-06 1 24.19 <3.33 1-hr Satisfactory percolation rate. JI <br /> Note: A satisfactory percolation rate for a"shallow'to n or minutes per inch. <br /> A satisfactory percolation rate for a"deep" test is less than or equal to 30 minutes per inch. <br /> J6.7 Discussion of Percolation Test Results <br /> The soils within the proposed sewage disposal area have demonstrated a satisfactory percolation rate <br /> in accordance with the requirements of the EHD. The soils appear to be suitable for a septic system <br /> utilizing leach lanes and seepage pits. <br /> 6.8 Discussion of Septic System Sizing <br /> E <br /> Septic system construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> Standards where applicable. <br /> F <br /> 1.0 <br /> Fit <br /> ri <br />