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L <br /> L June 12, 2006 <br /> NOA Project Number: E06061A <br /> Presatutation of the percolation test hole occurred on June 5,2006. The depth of water used to <br /> pre-soak was 12 inches above the bottom of the boring. <br /> L �6.4 Condition of Borings After Presaturation <br /> After the 24-hour soak period, the presaturated hole was found to be intact and dry on June 6,2006. <br /> L ✓ 6.5 Percolation Test Procedure <br /> A percolation test was conducted for the boring on June 6,2006 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed. The <br /> last half hour of the four-hour percolation test was observed by Lisa Medina, Senior Registered <br /> i Environmental Health Inspector,EHD. <br /> 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 /> 1 bottom level of the percolation test hole. The readings were taken approximately every half hour <br /> L for the four-hour percolation test. <br /> L <br /> /6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report <br /> 6. d/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. One <br /> percolation test must demonstrate a satisfactory percolation rate within the proposed septic system <br /> L disposal field to utilize a standard septic system. Details of the percolation test are summarized in <br /> the table below. <br /> LSummary of Percolation Test. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minuteslinch) Duration (see notes) <br /> P-1 shallow,6-6-06 3.28 15.6 4hr Satisfacto ercolation rate. <br /> Note: A satisfactory percolation rate for a"shallow're 's less than or equal to 60 minutes per inch. <br /> /6.7 6.7 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 lines or a filter bed. <br /> r <br /> 9 <br />