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�5 A ' � �7�P TESTING� �N�. Steven B. Schirmers • MPCA Cert.No. 627 <br /> 951 Katydid Lane NE • St. Michaei, MN 55376 • (763) 497-3566 <br /> FAX (763)-497-5011 <br /> State License #394 <br /> August 28, 2002 <br /> Mike & Peggy Sowada <br /> 725 Femdale Rd. No. <br /> Orono, Henn. Co., MN <br /> This site has an existing on-site sewage treatment system which is classified as failed <br /> by the City of Orono. An addition is planned for the home which includes a bedro�m. <br /> This on-site sewage treatment system is designed for a Type 1, six bedroom home, in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. <br /> The soils on this site are a clay loam. The seasonally saturated soils were located at <br /> 28" to 38" (mottled soil). Due to the seasonally saturated soils, a Pressurized Mound <br /> System will need to be installed to treat septic effluent. The bottom of the rock must be <br /> iocated at least 3' above the saturated soils. <br /> The soils at a depth of 12" have a percolation rate of 15.0 mpi. <br /> The existing tanks may be used if water tight and upon approval from the Inspector. If <br /> the tanks are not water tight, abandon, pump and fill with soil. The City requires a <br /> minimum of 1-1250 gallon and 1-1000 gallon tank. <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 /> chamber in a weather proof enclosure. A warning device must be installed with a light <br /> and sound device, this is in case of a pump failure. <br /> 1 <br />