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_ June 13,2005 NOA Project Number: E05071A ✓ pre-soak was 12 inches above the bottom of the borings. 6.4 Condition of Borings After Presaturation After the 24-hour soak period, the presaturated holes were found to be intact on the day of testing. The deep percolation test hole was found to be dry . The shallow percolation test hole was filled with water on the day of testing. /6.5 Percolation Test Procedure Percolation tests were conducted for the borings on the subject property on June 7, 2005 in accordance with the requirements of the EHD. A percolation test with a duration of four hours was performed for each hole. The last half an hour was observed by Ms. Lisa Medina, Senior Registered Environmental Health Inspector,EHD. Measurement of the water level during the percolation test was from a fixed 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. IND 6.6 Percolation Test Forms and Results The completed percolation test forms 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. A deep percolation test is defined as being between 3.5 and 25 feet in depth;a satisfactory percolation rate for a deep test is 30 min/in or less. One percolation test must demonstrate a satisfactory percolation rate within the proposed septic system disposal field of each parcel to utilize a standard �. septic system. Details of the percolation tests are summarized in Table 5. low 9 &W "'.44 ..