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SIT EVALUATION REPORT <br />i:OT 5, B .. 11 S'::AIi LAIi <br />FOR 3D BRG :•TN III G R0110 <br />On August le, 1980 five percolation holes were tested and two <br />soil borings talcen on the Ed Brown property to find an area suit- <br />able for up--rading an existing drainfield system. Because of the <br />existence of a high water table, the percolation holes were dug to <br />a two foot depth to test for a shallow trench system. These holes <br />were 6-inches in diameter. The soi' borings wore dug b inches in <br />diameter to the 4 root depth and 3 inches in diameter to the re- <br />maining depth. All roles were dug with bucket type 'nand operated <br />augers. <br />The average percolation rate was 29.0 minutes per inch which <br />is adequate for a shallow trench system. However, with the high <br />water table the trenches can only be about a half a foot to a foot <br />deep. Then material will need to be placed over the drainfield for <br />cover. For a three bedroom house and a 29 MPI percolation rate the <br />drainfield trcr_c=: area would n9ed to be at the least ?50 sq.ft. and <br />preferably 900 sq.ft. This could be 3 tronches 3 feet wide and 100 <br />feet long for each trench. If enough area exists up the bill from <br />the present trenches which is not saturated with backed up effluent, <br />the trenches could be placed there. This can be determined when the <br />tanrzs and present distribution pipe is exposed. If enough good area <br />does not exist there the fence on the kennel will have to taken down <br />and that area used for trenches. <br />Additional information follows on tha design of the syste:i. If <br />any additional information is needed, please contact me. <br />Sinceroly, <br />PERCOR, INC.. <br />Mark S, Gronberg, P.E. <br />