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CP• S-P VESTING, INC. Steven B. Schirmers — MPCA Cert. No. 627 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 July 28 , 1993 Roy Rassmussen 2700 White Oak Circle Orono, Henn. Co. , MN This site has an existing Non-Conforming On-Site Sewage Treatment System which does not meet the 3 ' seperation from the seasonally high water table. To adequately treat septic effluent, a Pressurized Mound System will need to be installed. The area to be used is in the southeast corner of the property. On the west end of the proposed system, approx. 20 ' of the mound will need to overlap a 10 ' wide berm 3 ' high. This berm will need to be removed with a backhoe without compacting the proposed mound site. When the berm was built, the soils were pushed from the west with very little travel on the area to be used. This is the only area available for the placement of a Pressurized Mound System. The slope is at 8% . The City code has a maximum of 6% , this will need to be approved by the City Official . The City also requires a 20 ' setback from the property line, approval will be needed for 10 ' . This On-Site Sewage Treatment System is Designed for a Type 1 , four bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances . The soils on this site are SCS soils mapped - LrB - Lester loam. A seasonally high water table was located at 24" & 28" . The bottom of the rock bed must be located at least 3 ' above the seasonally high water table. The soils at a depth of 12" have a percolation rate averaging 14 . 1 min/inch. A pumping chamber will need to be installed to lift the effluent to the treatment area. The manifold and supply line pipe must have back drainage to the pumping chamber . The distribution pipes shall have their ends capped. Be sure the rock and sand fill material are clean. The sod layer below the entire mounded area must be turned over, just break up the sod, be sure not to over work. CONT' D