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. � , � �� 11�4-r.-E-) ,� t,•. �r . K��r� � Rusty Olson's--Soil and Percolation Testing Joseph J. Olson--MPCA License #810 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 faz (763) 498-8290 November 03,2005 Bohland Development Proposed Lot 1,Biock 1 Mackinnon Hill Orono,Hennepin.County This on-site Sewage Treatment System is partially designed for a Type 1,five-bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. Once the house size,location and septic site are chosen this design can be completed. The seasonally saturated soils were located at 18"-32"(mottled soil). Due to the seasonally saturated soils, a pressurized Mound System will ne�d to be installed to treat sepric effluen� The bottom of the treatment area must be located at least 3'above the sahuated soils. The soils at a depth of 12"have a percolation rate averaging 6 MPI. AII absorption areas are at a minimum of 20 feet from the lot lines and 75 feet from wetlands. A pumping chamber will need to be installed to lift the ei�luent to the trealment area. The power supply and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure. A warning device must be installed with a light and sound device;this is in case of a pump failure. Keep all heavy equipmeut off of the proposed treatment areas before and at�er construction. The treatment area must be fenced off before construction begins. This Design is not valid&the System wiil need to be relocated if failure to protect the sreas proposed for the On-Site Sewage Treatment systems occurs. Nothing o�er than gray water,(laundry,showers,ect.)human water 8c toilet tissue should be disposed of into the sepric tanks. Garbage disposals are not recommended. Additives must no be used,they may cause harmful damage to your septic system. It is recommended that you pump the septic tank every yeaz for 1 tank,every two years for two tanks. Sincerely, Joseph J.Olson