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� , �7�P TESTING� �I�I C. 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 /> May 28, 1997 <br /> �;��� <br /> `- -,� �19g� <br /> Alan Carison �,qp <br /> 3125 Fox Street -����' <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 a 3' separation from the seasonally saturated soil (mottled soil). <br /> This on-site sewage treatment system is designed for a Type 1, six beciroom home, in <br /> accordance with the Minnesota Poliution Control Agency Chapter 7080 and locat <br /> ordinances. <br /> The soils on this site are SCS soils mapped - HbB - Hayden loam. The seasonally <br /> saturated soils were located at 24" to 28". Due to the seasonally saturated soils, a <br /> Pressurized Mound System will need to be installed to treat septic effluent. The bottom <br /> 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 12.1 mpi. <br /> The existing tanks are recorded as block type. The tanks must be water tight and may <br /> be used upon approval from the local Inspector. If the tanks are not water tight, they <br /> must be abandoned, pumped and filled with soil. <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 Iocated outside the manhole and pumping <br /> chamber in a weather proof enclosure. A waming device must be installed with a light <br /> and sound device, this is in case of a pump failure. <br /> 1 <br />