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Joseph Olson <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 Cell (612) 296-7715 <br />September 14, 2023 <br />Thomas Ryan <br />2245 Watertown Road <br />Orono, Hennepin County <br />Proposed Lot 2 <br />This on -site Sewage Treatment System is partly designed for a Type 1, five -bedroom home in accordance <br />with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br />Once the house location, lowest floor elevation is chosen this design can be completed. <br />There ma be more septic sites available for this lot. <br />The periodically saturated soils were located at 12 Inches (mottled soil). Due to the periodically saturated <br />soils, a pressurized mound system will need to be installed to treat the septic effluent. The bottom of the <br />treatment area must be located at least 3' above the saturated soils. This system is designed with 6 inches <br />of rock.. <br />Ali 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 2250-gallon septic tanks need to be installed or its equivalent. <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 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 />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. Iron filters and large volume water treatments stems cannot go into <br />the septic system. Garbage disposals are not recommended. Additives must not be used they may cause <br />harmful damage to your septic system. It is recommended that you pump the septic tanks every two years. <br />Sincer y, <br />Joseph J. Olson <br />