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� �7�P TESTING� �NC. Steven B. Schirmers • MPCA Cert.No. 627 <br /> 951 Katydid Lane NE • St. Michael, MN 55376 • (763) 497-3566 <br /> FAX (763)-497-5011 <br /> State License#394 <br /> May 19, 2006 <br /> Chris Welty `,���t� ���• lUc�;� — 1�I0�(.¢. <br /> 510 Deborah Dr. , S��' • rJ--�JI - �e,ll� <br /> Orono, Henn. Co., MN <br /> This site has an existing on-site sewage treatment system that has been classified as <br /> non-compliant by others. <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 a clay loam. The seasonally saturated soils were located at <br /> 24" to 28" (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 ineet size requirement by the City of Orono & are <br /> water tight. If the tanks cannot be used, installed 2-1250 gallon septic tanks. An <br /> effluent screen is required by the City at the outlet of the 2nd tank. <br /> A pumping chamber will need to be instaHed 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 />