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S-P TESTING, INC. <br /> 951 KATYDID LANE <br /> ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> STEVE SHIRMERS <br /> June 8 , 1987 <br /> John McDowell <br /> Lot 4, Block 1 <br /> Woodhill <br /> Orono, Henn. Co. , MN. <br /> This system is designed for a Type 1, five bedroom home and in accordance <br /> with the Minnesota Pollution Control Agency standards WPC 40 and local <br /> ordinances. <br /> The soils on this site are typical of SCS soils mapped - HbC - Hayden loam. <br /> A seasonally high water table was located at 56" to 64" , (mottling) . The <br /> bottom of each trench must be located at least 3 ' above the seasonally high <br /> water table. <br /> The soils at a depth of 24" have a percolation rate averaging 24.0 min/inch <br /> and are adequate for a standard treatment system. <br /> A pumping chamber will need to be installed to lift the effluen to the <br /> treatment area. <br /> The power supply and switches must be located outside the manhole and pump- <br /> ing chamber in a weather proof enclosure. A warning device must be in- <br /> stalled with a light and sound device, this is in case of a pump failure. <br /> (Mercury floats are a good method) . The supply line pipe must have back <br /> drainage to the pumping chamber. <br /> All neighboring wells are located more than 100 ' away from the proposed <br /> treatment area. <br /> Keep all heavy equipment off of the proposed treatment area before and after <br /> construction as much as possible. The treatment area should be marked off <br /> before construction. <br /> With proper installation and maintenance, this system should have no prob- <br /> lem in treating septic effluent effectively. <br /> It is recommended that the septic tanks be pumped every 2 years. <br /> Steven B. Schirmers <br /> Soil and Percolation Tests <br /> SBS/ds Septic System Design <br />