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= April 18, 2005 _ <br /> NOA Project Number:-E05008B <br /> 6.0 PERCOLATION TEST_INFORMATION <br /> 6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test holes is included as Plate 1 of this report. <br /> 6.2 Number of Percolation Tests <br /> t One shallow percolation test was conducted on each proposed parcel of the Site, for a total of four <br /> ll shallow percolation tests. <br /> 6.3 Boring Preparation and Presaturation <br /> a hand au on February 23 2005. <br /> The soil borings were advanced on the Site with fur ry , <br /> "'A 1.5-inch diameter PVC pipe with perforations-on the bottom was used to measure the drop of <br /> _..t7 . <br /> :Approxitriately 2 inches of"pea gravel" were placed in the <br /> water in the percolation test boring. <br /> bottom of the open soil boring, then the PVC pipe was installed on top of the gravel. Several feet <br /> of"pea gravel" were backfilled in the annular space. <br /> Presaiuration of the percolation test holes on Parcels 3 and 4 occurred on March 1, 2005, <br /> FJpresaturation of the percolation test holes-on-Parcels 1-and-2 occurred on March 2, 2005.The depth <br /> of water used to pre-soak was 12 inches above the bottom of the boring.. <br /> 6.4 Condition of Borings After Presaturation <br /> l <br /> After the 24-hour soak period,the presaturated holes were found to be intact and dry on the day of <br /> testing. <br /> 6.5 Percolation Test Procedure <br /> Percolation tests for Parcels, an re conducted for the borings on March 2, 2005 in accordance <br /> with the requirements of the EHD. ,A percolation test with a duration of four hours was performed <br /> for each hole. The final half-hour of each four-hour percolation test was observed by Mr. Mike <br /> 'Escotto, Registered Environmental Health Specialist, EHD.. Percolation tests for Parcels 1 and 2 <br /> were conducted for the borings'on March 3, 2005 in accordance with the requirements of the EHD. <br /> FA percolation test with a duration.-of four-hours was performed for each hole. The final half-hour <br /> of each four-hopercolation test was observed by Mr. Mike Escotto,Registered Environmental <br /> ur <br /> Health Specialist,'F-HD. <br /> 8 <br />