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Joseph Olson D.B.A. <br /> Rusty Olson's--Soil and Percolation Testing <br /> Joseph J. Olson--MPCA License #810 <br /> 11481 Riverview Rd. NE, Hanover, MN 55341 <br /> (763) 498-8779 fax (763) 498-8290 <br /> July 24,2012 <br /> John Lein <br /> Proposed lot 1 2700 6"'Ave N <br /> Orono, Hennepin County <br /> This on-site Sewage Treatment System is partially designed for a Type 1,five-bedroom home in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> Once the house size, location and septic primary and future sites are chosen this design can be <br /> completed.There may be more sites available. <br /> The periodically saturated soils were located at 14-22 Inches(mottled soil). Due to the <br /> periodically saturated soils,a pressurized mound system will need to be installed to treat the <br /> septic effluent. The bottom of the treatment area must be located at least 3' above the saturated <br /> soils. <br /> The soils at a depth of 12"have a percolation rate averaging 4 MPI. <br /> A pumping chamber will need to be installed to lift the effluent to the treatment area. The power <br /> supply and switches must be located outside the manhole and pumping chamber in a <br /> weatherproof enclosure.A warning device must be installed with a light and sound device;this is <br /> in case of a pump failure. <br /> Use 7/32 inch perforations on the laterals. <br /> Keep all heavy equipment off of the proposed treatment areas before and after <br /> construction.The treatment area must be fenced off before construction begins.This Design <br /> is not valid& the System will need to be relocated if failure to protect the areas proposed <br /> for the On-Site Sewage Treatment systems occurs. <br /> Nothing other than gray water,(laundry, showers,ect.)human water&toilet tissue should be <br /> disposed of into the septic tanks.Garbage disposals are not recommended.Additives must not be <br /> used;they may cause harmful damage to your septic system. It is recommended that you pump <br /> the septic tank s every two years. <br /> Sincerely, <br /> �/� Joseph J. Olson <br />