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t <br /> 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 /> January 19,2015 <br /> Gordon James Construction <br /> 3445 Watertown Road <br /> Orono,Hennepin County <br /> This on-site Sewage Treatment System is designed for a Type III five-bedroom home in accordance with <br /> the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> The system is a type III because there is 8-10 inches of fill on the site.The fill must be removed. <br /> The periodically saturated soils were located at 18-24 Inches(mottled soil).Due to the periodically <br /> saturated soils,a pressurized mound system will need to be installed to treat the septic effluent.The bottom <br /> of the treatment area must be located at least 3'above the saturated soils. <br /> All neighboring wells are greater than 100 feet from proposed treatment system absorption area. <br /> The existing tanks must be abandoned <br /> The future mound rock bed must be split into two rock beds.This system is designed as a non-level <br /> pressurized mound system using gate valves to equalize the pressure.The future mound site is over the <br /> existing trench system.The existing trench system is not plugged.If the future site is ever used the drop <br /> boxes should be disconnected and the system installed over the existing trench system. <br /> Use 7/32 inch perforations on the laterals and clean outs on the end of the laterals for maintenance <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 1000 gallon pumping chamber must be installed and connected to both houses to lift the effluent to the <br /> treatment area.The power supply and switches must be located outside the manhole and pumping chamber <br /> in a weatherproof enclosure.A warning device must be installed with light and sound devices;this is in <br /> case of a pump failure.The manifold and supply line must have back drainage to the pump chamber. <br /> Nothing other than gray water.(laundry,showers,etc.)Human water and 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 the <br /> fjnks every two years for two tanks. <br /> S' cerely, <br /> Joseph J.Olson <br />