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r � S-P TES TING, INC. 951 KATYDID LANE ST. MIGHAEL, MN 55376 497-3566 Steven B. Schirmers November 27, 1989 Woodhill Country Club 2 Acre Sub-Division Woodhill Ridge, Outlot B R:a • Orono, Henn. Co. , MN This system is Designed for a Type 1, four bedroom home and in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances . The soils on this site are typical of SCS soils mapped - KkC - Kilkenny loam. A seasonally high water table was located at 60" , 66" , 74" , 78" & 90" , (mottled soil ) . The bottom of each trench must be located at least 3 ' above the seasonally high water table. A standard trench system can be installed. The soils at a depth of 24" & 30" in Percolation test holes #1 through #5 have a percolation rate averaging 24 .0 min/inch and are adequate for treating septic effluent. Percolation test hole #6 failed at 240 . 0 min/inch and the system can not be located in this area. A pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weather proof enclosure. A warning device must be installed with a light and sound device, this is in case of a pump failure. (Mercury floats are a good method) . The supply line pipe must have back drainage to the pumping chamber. All neighboring wells are located more than 100 ' away from the proposed treatment area. Keep all heavy equipment off of the proposed treatment area before and after construction as much as possible. The treatment area should be marked off before construction. With proper installation and maintenance, this system should have no problem in treating septic effluent effectively. Recommend to pump the septic tank every year if there is only 1 tank & every 2 years if there are 2 tanks . Soil and Percolation Tests Septic System Design Steven B. Schirmers 10l SBS/ds