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TO: Jeanne A. Mabusth, Zoning Administrator FROM: Michael P. Gaffron, Septic System Inspector DATE: September 16, 1981 SUBJECT: #626 Charles Van Eec'chout, 1024 North Brown Road - Septic Testing Review I have reviewed the site evaluation information submitted for this property and wish to make the `ollowing comments: Lot 1 - (Northeas; corner) Average percolation rate 12 MPI, mottling started at a range of 2.5 - 3.5 feet, soil texture is mainly clay loam. Mound system would be required due to assumed seasonal saturation level less than 3' from surface. Lot 2 - (North -rater ) Average percolation rate 26 MPI, mottling started at appr imatel y 2 feet. Texture main clay loam. Mound system would be required dur-_ to assu*ed Eteasor,. saturation level less than 3' fL)m the surface. Lot 3 - (Northwest corner) Average percolation rate 106 MPI, mottling at 1.5 - 3.0' range, Lexture is mainly clay loam and sandy loam. Mound system would be required due to assumed seasonal saturation level less than 3' from the surface and due to slaw percolation rate. Lot 4 - Preliminary percolation testing found impermeable clay soils with rates not measurable. Mottling started at 0.2 - 1.5' deep. Subsegaent testing on the downs. ide of the tree line indicated coarser textured soils, better j..ercolation rates i:. the neighborhood of 1.0 MPI, with mottling at 1.5 - 2.0 feet. A mound system would be required due to this high assume) seasonal watertable. Lot 5 - Average percolation rate 42 M11I, mottling heavy at about 3 feet deep, texture .mostly clay loam. A mound system would be required due to the assL .ed seasonai saturation level at 3' from the surface. Lot 6 - 3rnge percolation rate 66 MPI, mattlirg starting at 2.0 - 2.2 feet deep, textu o mostly clay loam. A mound system would be required due to the assaired seascnal saturation level at 2 f-et and du,2 :o the sl, oercolation rates. Lest '7 - Average Eye !o' ation rate 22 MPI, ric)-_ r_linq started at 1.8 - 2.0 feet, texture n,u:;tly sandy clay loam and clay loam. A mounts system would be requireO due to the assumed seasonal saturation level at 1.9 feet below the surface. Slope limitations for mound systems are minimal on all lots. I would recommend alproval of the subdivision based on Each lot needinn to use a mound system. Road construction on the site should be done so as to not disturb the tested mound sites. Site M an:in,, :or construction of homes should be cleared toward presurv:ny the tested sites.