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�� �.7"� �.Fi�.7T1.NG, INC. Steven B. Schirmers — MPCA Cert. No. 627 <br /> 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 <br /> Sept�mber 25, 1995 <br /> James Matteson <br /> #10 Myrtlewood Rd. <br /> Orono, Henn. Co. , MN <br /> This On-Site Sewage Treatment System is Designed for a Type 1, three <br /> bedroom home Designed in accordance with the Minnesota Pollution <br /> Control Agency Chapter 7080 and local ordinances . <br /> This site has an existing Non-Conforming System which does not meet <br /> the 3 ' seperation from the saturated soil (mottled soil) & the bottom <br /> of the system. The system is also hydraulically overloaded with <br /> septic effluent surface discharging. This system is an imminent <br /> health hazard & must be abandoned & a new system installed. The <br /> existing tanks consist of 1-1000 gallon & 1-750 gallon (city records <br /> indicate block type) which will need to be abandoned, pumped & filled <br /> with soil . <br /> The soils on this site are a clay loam. A seasonally high water <br /> table was located at 12" to 28" . Due to the seasonally high water <br /> table, a Pressurized Mound System will need to be installed to treat <br /> septic effluent. The bottom of the rock bed must be located at least <br /> 3 ' above the seasonally high water table. <br /> The soils at a depth of 12" have a percolation rate averaging <br /> 12. 4 min/inch. <br /> A pumping chamber will need to be installed to lift the effluent <br /> to the treatment area. <br /> The manifold and supply line pipe must have back drainage to the <br /> pumping chamber. The distribution pipes shall have their ends <br /> capped. Be sure the rock and sand fill material are clean. The <br /> sod layer below the entire mounded area must be turned over, just <br /> break up the sod, be sure not to over work. <br /> The power supply and switches must be located outside the manhole <br /> and pumping chamber in a weather proof enclosure. A warninq device <br /> must be installed with a light and sound device, this is in case of <br /> a pump failure. • <br /> All neighboring wells are located greater than 100 ' away from the <br /> proposed treatment area. <br /> CONT' D <br />