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L <br /> LMay 25, 2006 <br /> NOA Project Number: E06040A <br /> Lbottom of the open soil boring, then the PVC pipe was installed on top of the gravel. "Pea Gravel' <br /> was then used to backfill in the annular space. <br /> f. Presaturation of the percolation test holes occurred 24 hours before each percolation test. The <br /> depth of water used to pre-soak was 12 inches above the bottom of the boring. <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 April 25, <br /> 2006. <br /> 6.5 Percolation Test Procedure <br /> LPercolation tests were conducted for the borings on April 25,2006 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed for each <br /> Lhole. The last half hour of the 4-hour percolation tests was observed by Mr. Michael Escotto, <br /> Registered Environmental Health 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 /> Lholes 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. <br /> L6.6 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 /> Lsatisfactory 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 less than or equal to 30 minutes per inch drop. One percolation test must <br /> L demonstrate a satisfactory percolation rate within the proposed septic system disposal field of each <br /> parcel to utilize a standard septic system. Details of the percolation tests are summarized in Table 5. <br /> L <br /> L <br /> L <br /> L ' '404 <br /> L <br />