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S -P TESTING, INC. <br />951 KATYDID LANE <br />ST. MICHAEL, MN 55378 <br />497.3588 <br />STEVE SHIRMERS <br />November 10, 1987 <br />Tom Betz \ �' <br />Lot 4 of 41 <br />Auditor's Sub #203 <br />Stubbs Bay Rd. <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 - L+B - LeSueur loam <br />boardered by - Ha - Hamel loam. A seasonally high water table was located <br />at 22", 26", 30", & 42", (mottling). Due to the seasonally high water <br />table, a pressurized mound sybtem will need to be installed.' The bottom of <br />the rock bed must be located at least 3' above the seasonally high water <br />table. <br />The soils at a depth of 18" have a percolation rate averaging 5.4 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 pcesible. The treatment area shoui.3 be <br />marked off before construction. <br />With proper instal',�tion 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 Testa t7, 8, Si <br />Septic System Design Steven B. Schirmers <br />SBS/ds <br />Im <br />