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S-P TESTING, INC. <br /> • 951 KATYDID LANE <br /> ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> STEVE SHIRMERS <br /> September 17, 1987 <br /> Wear Partnership <br /> Lot 1, Block 2 <br /> Orono, Henn. Co. , MN. <br /> This system is designed for a Type 1, four 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 - LrB - Lester loam. <br /> A seasonally high water table was located at 18" , 20" , 26" , & 28" , (mottl- <br /> ing. Due to the seasonally high water table, a pressurized mound system <br /> will need to be installed. The bottom of the rock bed must be located at <br /> least 3 ' above the seasonally high water table. • <br /> The soils at a depth of 18" have a percolation rate averaging 12 . 5 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 /> • <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 /> • <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 /> • <br /> Soil and Percolation Tests Steven B. Schirmers <br /> SBs/ds • Septic System Design <br />