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a <br /> January 4,2006 <br /> NOA Project Number: E05166B <br /> /6.5 Percolation Test Procedure <br /> The percolation tests were conducted for the borings on December 2, 5 and 19,2005 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 last half an hour of the tests was observed by Ms. Lisa Medina, Senior Registered <br /> Environmental Health Specialist,EHD and Mr.Ted Tasiopoulos, Registered Environmental Health <br /> Specialist, 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 /> values 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 /> four hours. <br /> 6.6 Percolation Test Forms and Results <br /> The completed percolation test forms are included in the appendix of this report. <br /> 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. A <br /> deep percolation test is defined by the EHD as being between 36 inches and 25 feet in depth; a <br /> satisfactory percolation rate for a deep test is less than or equal to 30 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 6. <br /> 9 <br />