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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 fax (763) 498-8290 <br /> April 22,2015 <br /> Mooney Lake Preserve <br /> Proposed lot 1,Block 2 W( h(,6 txr S� 8 Lc I J\ <br /> 300 Sixth Ave.N. <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 24-30 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 11 MPI. <br /> A pumping chamber will need to be installed to lift the effluent to the treatment area.The power supply and <br /> switches must be located outside the manhole and pumping chamber in a weatherproof enclosure.A <br /> warning device must be installed with a light and sound device;this is in case of a pump failure. <br /> Use 7/32 inch perforations on the laterals. <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 /> Nothing other than gray water,(laundry,showers,act.)human water&toilet tissue should be disposed of <br /> into the septic tanks. 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 tank s every two years. <br /> Sincerely, <br /> Joseph J. Olson <br /> RECEIVED <br /> APR 222015 <br /> CITY OF ORONO <br />