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• • I '� "moo 7c9 - a L-- <br /> S-P TESTING, INC. <br /> 951 KATYDID LANE <br /> • ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> STEVE SHIRMERS <br /> • December 14, 1987 <br /> • <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 28" , 38" , 40" , 42" , & 58" , <br /> (mottling) . Due to the seasonally high water table, a pressurized mound <br /> system will need to be installed. The bottom of the rock bed must be lo- <br /> cated at least 3 ' above the seasonally high water table. <br /> The soils at a depth of 18" have a percolation rate averaging 19. 3 min/inch <br /> and are adequate for treating septic effluent. <br /> A pumping chamber will need to be installed to lift the effluent to the <br /> treatment area. <br /> The manifold and supply line pipe must have back drainage to the pumping <br /> chamber. The distribution pipes shall have their ends capped. Be sure <br /> the rock and sand fill material are clean. The sod layer below the <br /> entire mounded -area must be turned over, just break up the sod, be sure <br /> not to over work. <br /> The power supply and switches must be located outside the manhole and <br /> pumping chamber in a weather proof enclosure. A warning device must be <br /> installed with a light and sound device, this is in case of a pump failure. <br /> (Mercury floats are a good method) . <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 <br /> after construction as much as possible. The treatment area should be <br /> marked off before construction. • <br /> With proper installation and maintenance, this system should have no <br /> problem in treating septic effluent effectively. ' <br /> It is recommended that,the septic tanks be pumped every 2 years. <br /> Soil and Percolation Tests ' ,.4! • <br /> Steven B. Schirmers <br /> Septic System Design <br /> SBS/ds <br />