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L May 17,2005 <br /> NOA Project Number: E04146B <br /> LPresaturation of the percolation test holes occurred on May 5,2005. The depth of water used to <br /> pre-soak was 12 inches above the bottom of the borings. <br /> / 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 May 6, <br /> ` 2005. <br /> L ✓ 6.5 Percolation Test Procedure <br /> L Percolation tests were conducted for the borings on May 6, 2005 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed for each <br /> hole. The last half an hour was observed by Mr. Ted Tasiopoulos, Registered Environmental Health <br /> 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 /> Lvalues 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 /> L <br /> four hours. <br /> 1/6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report. <br /> LA 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 /> disposal field of each parcel to utilize a standard septic system. Details of the percolation tests are <br /> summarized in Table 4. <br /> L Table 4. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minutes inch) Duration (see notes) <br /> P-1 shallow,5/6/05 3.43 22.7 4-hr Satisfactory percolation rate <br /> I \ <br /> ` P-2 shallow,5/6/05 3.50 7.14 1 4-hr. Satisfactory percolation rate <br /> Note: A satisfactory percolation rate for a"shallow"tem lessthan or equal to 60 minutes per inch. <br /> 8 <br /> L <br /> L <br />