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Rusty Olson's--Soil and Percolation Testing <br /> Joseph J.Olson—MPCA License#810 <br /> 11481 Riverview Rd. NE,Hanover, MN 55341 <br /> (612)498-8779 <br /> June 292000 <br /> Jeff Mel in <br /> 3940 Watertown Road <br /> Orono Henn. Co. <br /> This on-site Sewage Treatment System is designed for a Type 1,Three-bedroom home in accordance with <br /> the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> The soils on this site are SCS. soils mapped- EnC-Erin loam. The seasonal saturated soils were located <br /> at 20"-(mottled soil). Due to the seasonally saturated soils,a pressurized mound system will need to be <br /> installed to treat the septic effluent.the bottom of the treatment area must be located at least 3' above the <br /> saturated soils. <br /> All neighboring wells are greater than 100 feet from proposed treatment areas. <br /> The soils at a depth of 12"have a percolation rate averaging 3 MPI. <br /> The existing system does not conform to the two foot separation to mottle soil rule. And is an <br /> IMMINENT HEALTH THREAT AND MUST BE UPGRADE WITHIN 10 MONTHS. <br /> The existing tanks must be abandonded. <br /> A pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply <br /> and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure. A <br /> warning device must be installed with light and sound devices;this is in case of a pump failure. <br /> The manifold and supply line must have back drainage to the pump chamber.The rock and fill materials <br /> must be clean.The sod layer below the entire mounded area must be turned over.Just break up the sod <br /> and be sure not to over work. <br /> Keep all heavy equipment off of the proposed treatment areas before.,during and after construction. <br /> Nothing other than gray water,(laundry,showers,ems) Human water and toilet tissue should be <br /> disposed of into the septic tanks Garbage dispoals are not recommended, Additives must not be <br /> used; they may cause harmful damage to your septic=tem It Og recommended that you pump the <br /> tank every year for 1 tank every two years for two tanks. <br /> Sincerely, <br /> /�Jo�/phJ. Olson <br />