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January.3, 2006 E NOA Project Number: E05164A 6.3 Boring Preparation and Presaturation The soil borings on Parcels 1 and 2 were advanced on the Site with a four inch diameter hand auger on December 13, 2005. 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" 4_ was backfilled in the annular space. Presaturation of the percolation test holes occurred on December 13, 2005. 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 holes were found to be intact and dry on December 14,2005. 6.5 Percolation Test Procedure Percolation tests were conducted for the borings on December 14, 2005 in accordance with the Fjrequirements of the EHD. A percolation test with a duration of one hour was performed for the north parcel. A percolation test with a duration of four hours was performed for the boring on the south parcel. The entirety of the one-hour percolation test and the last half hour of the four hour percolation test was observed by Mr.Ted Tasiopoulos, Registered Environmental Health Inspector, EHD t z. Measurement of the water level during the.percolation test was from a fixed reference point on the I PVC casing using an electric well sounder with an depth accuracy of 1/100th foot. All tabulated values on the field datasheet (appendix) are in decimal feet. After water drop was observed, the f 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 approximately every 10 minutes .for a period of one hour for the one hour test, and readings were taken approximately every half hour for the four hour percolation test. I` 6.6 Percolation Test Forms and Results The completed percolation test farms are included in the appendix of this report. A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth;a satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop One j percolation test must demonstrate a satisfactory percolation rate within the proposed septic system rldisposal field of each parcel to utilize a standard septic system. Details of the percolation tests are 8 ri .