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E <br />S'P TESTING, INC. Steven B. Schirmers - MPCA Cert. No. 627 <br />951 Katydid Lane NE • St. Michael, MN 55376 - (612) 497-3566 <br />FAX (612)-497-5011 <br />State License #394 <br />April 15, 1999 <br />Dan Bergeron <br />1980 6th Avenue <br />Orono, Henn. Co., MN <br />This site has an existing on -site sewage treatment system which is classified as failed <br />due to not meeting the required 3' separation from the bottom of the system and the <br />saturated soil. <br />This on -site sewage treatment system is designed for a Type 1, three 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 - LrC - Lester loam. The seasonally <br />saturated soils were located at 36" to 46" (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 14.6 mpi. <br />The existing tanks may be used if water tight and upon approval from the local <br />Inspector. <br />A pumping chamber will need to be installed to lift the effluent to the treatment area. <br />The power supply and switches must be located outside the manhole and pumping <br />and sound device, this is in case of a pump failure, chamber in a weather proof enclosure. A warning device must be installed with alight <br />