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L <br /> L July 30, 2005 <br /> NOA Project Number: E05089A <br /> L 6.4 Condition of Borings After Presaturation <br /> After the 24-hour soak period, the presaturated holes were found to be intact and dry on June 29 <br /> and 30,2005. <br /> L <br /> 6.5 Percolation Test Procedure <br /> Percolation tests were conducted for the borings on June 29 and 30, 2005 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed on test <br /> hole number two, and a percolation test with a duration of one hour was performed on test hole <br /> number one. The last half an hour was observed for the four hour test, and the last ten minutes <br /> L <br /> were observed for the one hour test by Mr. David Van Dyne,Registered Environmental Health <br /> Inspector, EHD. <br /> LMeasurement 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 /> bottom level of the percolation test hole. The readings were taken every 30 minutes for a period of <br /> four hours for the four hour test, and readings were taken every 10 minutes for a period of one hour <br /> L for the one hour test. <br /> 6.6 Percolation Test Forms and Results <br /> LThe 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. One <br /> percolation test must demonstrate a satisfactory percolation rate within the proposed septic system <br /> Ldisposal field of each parcel to utilize a standard septic system. Details of the percolation tests are <br /> L summarized in Table 5. <br /> Table 5. <br /> Summary of Percolation Tests. <br /> L <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> LP-1 shallow,6-30-05 3.1 3.62 1-hr Satisfactory percolation rate <br /> (3.62 minutes/inch) <br /> Satisfactory percolation rate <br /> P-2 shallow,G29-0.5 3.36 9.6 4-hr. Satisfactory <br /> minutes/inch <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 /> L <br /> 9 <br /> L <br /> L <br />