1980-11-29 Septic System Design Report

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SITE iWALUATION MFORT LOT 2, BLOCK i 7AIRdAY VIT:1 11-29-80 On November 27-29, 1980 six percolation. noles were tested and three soil borings taken on the above lot to uetermine the suita- bility for both a pr;mary and alternate drainfield site. The percolation holes were dixg 6 inches in diameter and 36 inches deep with bucket type hand augers. The digging was diffi- cult since many small rocks were encountered at the one and a half foot depth. The soil borings were dug,6 inches in diameter to the L foot depth and a diameter to the 6 foot depth, also with bucket type har,' _ _)rs. This lot is loca', ainly in the Hayden Loam soil series and yielded an average perec- ation rate of 5.3 minutes per inch for the primary* drainfield site. In addition, no indication of a high water table existed so a standard drainfield system could be con- structed. The alternate cite wRs situated on a saddle between two low areas and yielded a better percolation rate but because of the possibility of a high water table at certain times, a shallo•.a trerich system mould need to be used here should the need ever a- rise. The::e trenches would be constructed about a foot deem in the natural soil with some fill beinr, placed over the top. Because there is such a small area that is available for both a building site and a drainfield it will be somewhat tight placing the house on i;iie lot, but enough room should exist for a 'Liuuse of n rnal width to be constructed. Additional design information fol- lows in this report. O"hould any other information be needed, please co„tact me. Sincerely, PERCOR, INC. nark % Gronberg, P.E.