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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 /> October 31,2016 <br /> NOR-SON <br /> 500 Willow Drive S <br /> Orono,Hennepin County <br /> This on-site Sewage Treatment System is partially designed for a Type 1 five-bedroom home and a I <br /> bedroom guest house in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. <br /> Once the house size, location, lowest floor elevation and septic primary and future sites are chosen this <br /> design can be completed. <br /> The periodically saturated soils were located at 12-16 inches(mottled soil). Due to the periodically <br /> saturated soils,a pressurized mound system with 6 inches of rock will need to be installed to treat the septic <br /> effluent. The bottom of the treatment area must be located at least 3' above the saturated soils.This system <br /> is designed with 6 inches of rock <br /> All neighboring wells are greater than 100' from proposed treatment areas. <br /> The soils at a depth of 12"have a percolation rate averaging 10 MPI. <br /> A 2250 combination septic tank needs to be installed for the house and a 1500 gallon combination for the <br /> guest house.The guest house is to be built first.The 1500 gallon combination tank should be used as a <br /> holding tank until the house is built. <br /> All new tanks need to be insulated if there is less than two feet of cover over the top of the tanks.Clean <br /> outs must be installed on the end of the laterals for maintenance. <br /> A 1300 gallon pumping chamber will need to be installed to lift the effluent to the treatment area.The <br /> power supply and switches must be located outside the manhole and pumping chamber in a weatherproof <br /> enclosure. A warning device must be installed with light and sound devices;this is in case of a pump <br /> failure.A flow measurement device must be installed. Including but not limited to a water meter,event <br /> counter,running time clocks or electronically controlled dosing. <br /> Nothing other than gray water,flaundrv.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 /> tank every year for I septic tank,every two years for two septic tanks <br /> Sincerely, <br /> Joseph J. Olson <br />