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L <br /> LMarch 27,2006 <br /> NOA Project Number: E05144B <br /> L �.5 Percolation Test Procedure <br /> LPercolation tests were conducted for the borings on March 22 and 23,2006 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of either one hour or four hours was <br /> L performed for each hole. The last half hour of the four hour tests and the entire hour of the one <br /> hour tests were observed by Ms.Lisa Medina,Senior Registered Environmental Health Inspector, <br /> EHD. <br /> L 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 /> L 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 either every 10 minutes for a 1- <br /> hour percolation test or every 30 minutes for a 4-hour percolation test. <br /> L /6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report. <br /> L <br /> A 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 toGO u emm tt s per inch drop. A <br /> L 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 30 min/in or less. One percolation test must demonstrate a satisfactory <br /> percolation rate within the proposed septic system disposal field of each parcel to utilize a standard <br /> septic system. Details of the percolation tests are summarized in Table 6. <br /> L <br /> I <br /> L <br /> L <br /> L <br /> I <br /> L <br /> L <br /> 9 <br /> L <br />