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._, . .�� - <br /> w�7��' TESTING� 11r C. Steven B. Schirmers — MPCA Cert. No. 627 <br /> 951 Katydid Lane NE � St. Michael, MN 55376 • 612 497-3566 <br /> � � a ��r� � <br /> ORONO <br /> ��ISU V� <br /> July 19 , 1991��G � 1991 <br /> p /�M � h . . <br /> Walter Ringer <br /> 2165 North Shore Dr. <br /> Orono, Henn. Co. , MN <br /> This On-Site� Sewage Treatment System is Designed for a Type 1, four <br /> bedroom home in accordance with the Minnesota Pollution Control <br /> Agency Chapter• 7080 and local ordinances. -• _ <br /> The soils on this site are SCS soils mapped - HbB - Hayden loam <br /> bordered by - Heyder soils. A seasonally high water table was <br /> located at 86" , (mottled soil) . The bottom of each trench must <br /> be located at least 3 ' above the seasonally high water table. A <br /> Standard Trench system may be installed- pressurized typical of a <br /> mound system. <br /> The soils at a depth of 30" have a percolation rate averaging 13.9 <br /> min/inch and are adequate for treating septic effluent. <br /> A pumping chamber will need to be installed to lift the effluent to the <br /> treatment area. <br /> The power supply and switches must be located outside the manhole and <br /> pumping chamber in a weather proof enclosure. A warning device must be <br /> installed with a light and sound device, this is in case of a pump failure. <br /> (Mercury floats are a good method) . The supply line pipe must have back <br /> drainage to the pumping chamber. <br /> This site has an existing failing system with surface drainage. The <br /> existing tanks are old & must be abandoned, pumped & filled with soil . <br /> All neighboring wells are located greater than 100 ' away from the ' <br /> proposed treatment area. <br /> CONT' D <br />