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S-P TESTING, INC. <br /> 951 KATYDID LANE <br /> ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> Steven B. Schirmers <br /> June 24 , 1991 <br /> Ted Ham <br /> 480 Orono Orchard Rd . <br /> Caretaker House <br /> Orono, Henn. Co. , MN <br /> This On-Site Sewage Treatment System is Designed for a Type 1 , three <br /> bedroom home in accordance with the Minnesota Pollution Control <br /> Agency Chapter 7080 and local ordinances. <br /> The soils on this site are typical of SCS soils mapped - Kkc - Kilkenny <br /> loam. A seasonally high water table was located at 12" & 18" , <br /> (mottled soil) . This site has an existing failing system with <br /> effluent surfacing. This site has strong clay soils with a high <br /> seasonally high water table. Soil Borings completed east of the <br /> barn at the base of the slope are fill soils . North of the house <br /> are also fill & excavated soils , these are not suitable for an <br /> On-Site Sewage Treatment System. Northwest of the main house , <br /> original soil was found aid is suitable for an On-Site Sewage <br /> Treatment System but dueto the seasonally high water table, <br /> a Pressurized Mound System will need to be installed. Slopes <br /> exceed the 6% allowed by the City of Orono and are 9% to 10% , <br /> this will need to be approved by City Officials. <br /> The soils at a depth of 12" have a percolation rate averaging 13 . 3 <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 manifold and supply line pipe must have back drainage to the pumping <br /> chamber . The distribution pipes shall have their ends capped. Be sure <br /> the rock and sand fill material are clean. The sod layer below the <br /> entire mounded area must be turned over , just break up the sod, be sure <br /> not to over work. <br /> CONT ' D <br /> Soil and Percolation Tests <br /> Septic System Design <br />