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Joseph Olson D.B.A. <br />Rusty Orlson's--Soil and Percolation Testing <br />Joseph J. Olson--MPCA License #814 <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 <br />PID #0211723230005 <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 7132 -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 />Sincely, <br />Joseph J. Olson <br />