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d 'Prez. n© i <br /> CQa loH <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 /> November 2.6;2017 — <br /> Gonyea Homes <br /> 765 Lakeview Parkway <br /> Orono. Hennepin County <br /> This on-site Sewage Treatment System is designed for a Type 1,five-bedroom home in accordance with <br /> the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> The periodically saturated soils were located at 20-24 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 /> The absorption areas of the two systems do not overlap. <br /> The soils at a depth of 12"have a percolation rate averaging 9.1 MPI. <br /> A 2250-gallon septic tank is designed for this site. All tanks need to be insulated if there is less than two <br /> feet of cover over the top of the tanks.Clean outs must be installed on the end of the laterals for <br /> maintenance. <br /> Use 7/32 inch perforations on the laterals. <br /> A Darwin 1300 gallon pumping chamber will need to be installed to lift the effluent to the treatment area. <br /> The power supply and switches must be located outside the manhole and pumping chamber in a <br /> weatherproof enclosure. A warning device must be installed with light and sound devices;this is in case of <br /> a pump failure. A flow measurement device must be installed. Including but not limited to a water meter. <br /> event counter,running time clocks or electronically controlled dosing. <br /> Keep all heavy equipment off of the proposed treatment areas before,during and after construction. <br /> The area around both sites must be fenced off by the contractor before any construction begins. <br /> With proper installation and maintenance,this system should have no problem in treating septic effluent <br /> effectively. 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. Iron filters cannot go into this <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 /> Sincere <br /> Joseph J. Olson <br />