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Joseph Olson. 01]LA. <br /> Rusty .Ols.on's- foil and. Percolation Testing <br /> Joseph.J. Olson--MPGA License #810 <br /> 11481 Riverview Rd.NE,Hanover,MN 55341 <br /> (7.63):4.98-8779 fax (763) 498-8290 <br /> May 10,2020 <br /> Mary Dunn Trust <br /> PID#3211823340006 <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 /> This lot was platted before April 1. 1996.There is only one type.I septic site on this lot. <br /> Once the house size,location and basement slab elevation are chosen this design can be completed. <br /> The periodically saturated soils were located at 12 Inches(mottled sail) Due to the periodically saturated <br /> soils,a pressurized mound system will need to be installed to treat the septic effluent.The bottom of the <br /> treatment area must be located at least 3'above the saturated.s oils. <br /> All tanks need to be insulated if there is less than two feet of cover over the top of the tanks.Clean outs <br /> must be installed on the end of the laterals for maintenance. <br /> A pumping chamber will need to be installed to lift the effluent to the treatment area.The power supply and <br /> switches must be located outside the manhole and pumping chamber in a weatherproof enclosure.A <br /> warningdevice must be installed with a light and sound device;this is 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 construction,The <br /> treatment area must be fenced off before construction begins.This Design is not valid&the System <br /> will need to be relocatedif-failure to protect the areas proposed for the On-Site Sewage Treatment <br /> systems occurs. <br /> With proper installation and main#enantce,this system should have no problem in treatingseptic effluent <br /> effectively.Nothing other than gray water,(laundry,showers,etc.)Human water and toilet tissue should be <br /> disposedof into the septic tanks.Garbage disposals are not recommended.Iron filters cannotgo into the. <br /> system.Additives must not be used they may cause harmful damage to your septic system.It is <br /> recommended that you pump the septic tanks every two years. <br /> Sincerely, <br /> Joseph 1.Olson <br />