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r , <br /> S'P TESTING, INC. Steven B. Schirmers — MPCA Cert. Na. 627 <br /> � 1 <br /> 951 Katydid Lane NE • St. Michaei, MN 55376 • (612) 497-3566 <br /> December 15 , 1993 <br /> Coffin site <br /> Lot 9 , Block 1 <br /> Orono, Henn. Co . , MN <br /> This On-Site Sewage Treatment System is Designed for a Type 1 , five <br /> bedroom home i;i ac:�ordance with the Minnesota Polluti�n Control <br /> Agency Chapter 7080 anc? loc�l ordinances . <br /> The soils on this site are SCS soils mapped - LrB - ��ester loam. <br /> A seasonally high water table was located at 22" to 3�" , (mottled <br /> soil ) . Due to the seasonally high water table , a Pressurized <br /> Mour.� System will 21P.Pc� to be installed . The bottor� oF the rock <br /> bed must be located at l�ast 3 ' above the seasoiially high water <br /> table . <br /> The soils at a depth of 1?" have a percolation rate av�raging <br /> 4 . 1 in TH ' s #3 , 4 & 5 . <br /> A pumping chamber will ileed to be installed ta iift the effluent <br /> to the treatment area . <br /> The manifold and supply line pipe must have back drainage to t:�e pum�ing <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 <br /> be installed wit:z a iight and soizn:� device , this is in case of a pump <br /> failure . Mercury floats are a good method. <br /> Al1 neighboring wells are located greater than 100 ' away from the <br /> proposed treatment area . <br /> CONT ' D <br />