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PC <br /> Exhibit D <br /> LA18-000062 <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 /> July 4,2018 <br /> Stonewood LLC. <br /> Proposed lot 1 <br /> PID#02 I 1723230005 <br /> 387 Orono Orchard Road S. <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 completed. <br /> The periodically saturated soils were located at 14-20 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 /> The soils at a depth of 12"have a percolation rate averaging 7 MPI. <br /> A 2250-gallon septic tank or its equivalent needs to be installed.All tanks need to be insulated if there is <br /> less than two feet of cover over the top of the tanks.Clean outs must be installed on the end of the laterals <br /> for maintenance. <br /> Use 7/32-inch perforations on the laterals. <br /> A 1250-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 a light and sound device;this is in case of a pump <br /> failure. <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 relocated if failure to protect the areas proposed for the On-Site Sewage Treatment <br /> systems occurs. <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 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 /> Since ly, <br /> Joseph J.Olson <br />