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S-P TESTING., INC. Steven B. Schirmers & Debra M. Schirmers <br /> 951 Katydid Lane NE - St. Michael, MN 55376 - (612) 497-3566 <br /> FAX (612)-497-5011 <br /> State License #394 <br /> July 15, 1998 <br /> Robert Suess <br /> 2590 Watertown Rd. <br /> Orono, Henn. Co., MN <br /> This site has an existing pressurized mound system that the homeowner would like to <br /> abandon. <br /> This on-site sewage treatment system is designed for a Type 1, five bedroom home, in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. <br /> The soils on this site are SCS soils mapped - L+B - Lesueur loam. The seasonally <br /> saturated soils were located at 12" & 20" (mottled soil). Due to the seasonally saturated <br /> soils, a Pressurized Mound System will need to be installed to treat septic effluent. The <br /> bottom of the treatment area must be located at least 3' above the saturated soils. <br /> The soils at a depth of 12" have a percolation rate averaging 31.9 mpi. <br /> The existing pumping chamber is deep and must be water tight to be used. <br /> Recommend to raise the tank to elevation 94.0 to prevent ground water seepage. The <br /> ' power supply and switches must be located outside the manhole and pumping chamber <br /> in a weather proof enclosure. A warning device must be installed with a light and sound <br /> device, this is in case of a pump failure. <br /> The manifold and supply line pipe must have back drainage to the pumping chamber. <br /> The distribution pipes shall have their ends capped. Be sure the rock and sand fill <br /> material are clean. The sod layer below the entire mounded area must be turned over, <br /> just break up the sod, be sure not to over work. <br /> 1 <br />