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November 30,2007 NOA Project Number: E07192A 6.0 PERCOLATION TEST INFORMATION 6.1 Percolation Test Locations A site map indicating the location of the percolation test hole is included al Plate1 the appendix of this report. 6.2 Number of Percolation Tests G hallow percolation test was conducted on the parcel of the site for a total of one percolation 6.3 Boring Preparation and Presaturation One shallow soil boring was advanced on the site with a hand auger on February 7,2007. A 1.5-inch diameter PVC pipe with perforations on the bottom was used to measure the drop of / water in the percolation test boring. Approximately 2 inches of"pea gravel" were placed in the bottom of the open soil boring, then the PVC pipe was installed on top of the gravel. "Pea gravel" was then used to backfill in the annular space. Presaturation of the percolation test hole occurred 24 hours before each percolation test. The depth of water used to pre-soak was 12 inches above the bottom of the boring. 6.4 Condition of Borings After Presaturation After the 24-hour soak period, the presaturated hole was found to be intact and dry on February 8, 2007. 6.5 Percolation Test Procedure A percolation test was conducted for the site on February 8,2007 in a with the requirements of the EHD. A percolation test with a du7--- Measurement tion o our hours was erformed. The last half hour of the 4-hour percolation test was observed b Ms.-Amanda Borden, D. of the water level during the percolation test was roma ed reference point on the PVC casing using an electric well sounder with an depth accuracy of 1/100th foot. All tabulated values on the field data sheet (appendix) are in decimal feet. After water drop was observed, the holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) of water above the bottom level of the percolation test hole. The readings were taken every 30 minutes for a period of four hours. 7 .,44