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• <br /> • <br /> • S-P TESTING, INC. <br /> 951 KATYDID LANE <br /> ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> Steven B.. Schirmers <br /> April 19, 1989 <br /> .Phyllis Colwell <br /> Lot 1, Block 1 <br /> Colwell Addition <br /> Orono, Henn. Co. , MN • <br /> • <br /> This system is Designed for a Type 1, four bedroom home and in accordance <br /> with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. <br /> The soils on this site are SCS soils mapped - LrC - Lester loam, more <br /> typical of Heyder . soils . A seasonally high water table was located at <br /> 58" , 60" & 62" (mottled soil) . The bottom of each trench must be lo- <br /> cated at least 3 ' above the seasonally high water table. <br /> The soils at a depth of 18" & 24" have a percolation rate averaging <br /> 8 . 8 min/inch and are adequate for a standard treatment system. <br /> A pumping chamber will need to be installed to lift the effluent to the <br /> treatment area. <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) . 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 <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 /> Recommend to pump the septic tank every year if there is only 1 tank <br /> & every 2 years if, there are 2 tanks. • <br /> • <br /> • <br /> Soil and Percolation Tests Steven B. Schirmers <br /> SBS/ds Septic System Design <br />