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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 30, 1988 <br /> • <br /> Connie Carruthers <br /> 580 Orchard Park Rd. <br /> Orono, Henn. Co. , MN <br /> • <br /> This system is designed for a Type 1, Two bedroom home and in accordance <br /> with the Minnesota Pol.utibn Control Agency standards WPC 40 and local <br /> ordinances . <br /> The soils on this site are typical of SCS soils mapped - ErC2 - Erin clay <br /> loam. A seasonally high water table was -located at 12" , 20" , & 22" , <br /> (mottling) . . This site has an existing failing system which outlet to <br /> the surface in a low area south of the house. Due to the strong clay <br /> soils & high seasonally high water table, a pressurized mound system will <br /> need to be installed. The bottom of the rock bed must be located at least <br /> 3 ' above the seasonally high water table. <br /> The soils at a depth .of 12" & 18" have. a percolation rate averaging 13. 7 <br /> min/inch 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 /> • <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 S-tA „ • &fi,„.. <br /> , Septic System Design Steven B. Schirmers C:$S <br /> SBS/ds <br />