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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 Cell (612) 296-7715 <br />August 17, 2021 <br />Custom One Homes LLC. <br />2640 Watertown Road <br />Orono, Hennepin County <br />This on-site Sewage Treatment System is designed for a Type Ifve-bedroom home in accordance with the <br />Minnesota Pollution Control Agency Chapter 7080 and local ordinances. There is no future septic site on <br />this lot. <br />The periodically saturated soils were located at 14-16 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 />A lift immo will be needed in the lowest level. The maximum cover over the tanks is four feet. <br />All neighboring wells are greater than 100' from proposed treatment areas. <br />The existing septic tanks must be abandoned. New septic tanks need to be installed that meets 2250 -gallon <br />septic tank capacity. <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 1250 -gallon low profile pumping chamber will need to be installed to lift the effluent to the treatment <br />area. 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 />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 water treatment systems cannot go into the septic <br />system. Garbage disposals are not recommended. Additives must not be used they may cause harmful <br />damage to your septic system. It is recommended that you pump the septic tanks every two years. <br />Sincerely, <br />Joseph J. Olson <br />