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• <br /> LI-761 i w- iSrsanck <br /> Rusty Olson's--Soil and Percolation Testing <br /> Joseph.1.Olson--MPCA License#810 <br /> 11481 Riverview Rd. NE, Hanover,MN 55341 <br /> (763) 498-8779 Fax(763)498-8290 <br /> November 29,2008 <br /> David Albertson <br /> 4701 West Branch Road <br /> Orono,Hennepin County <br /> This on-site Sewage Treatment System is designed for a Type 1 five-bedroom home in accordance with the <br /> Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> The periodically saturated soils were located at 12"-16"(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. <br /> All neighboring wells are greater than 100' from proposed treatment areas. <br /> The soils at a depth of 12"have a percolation rate averaging 20 MPI. <br /> The existing septic tanks from the burnt down house must be abandoned.Two new 1250 gallon septic tank <br /> needs to be installed to meet local codes.A 1250 gallon lift station must be installed to meet this design. <br /> A tank filter and lateral clean outs must be installed. <br /> Use 7/32 inch perforations on the laterals. <br /> Keep all heavy Equipment off the proposed treatment areas before during and after construction. <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 light and sound devices;this is in case of a pump failure.The <br /> manifold and supply line must have back drainage to the pump chamber.The rock and fill materials must <br /> be clean.The sod layer below the entire mounded area must be turned over.Just break up the sod and be <br /> sure not to over work. <br /> 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. Additives must not be <br /> used;they may cause harmful damage to your septic system. It is recommended that you pump the <br /> tanks every two years. <br /> s' cerely, CITY OF ORONO <br /> SEPTIC PERMIT N RE) E} <br /> INSPECTOR %L� ��r <br /> Joseph J.Olson DAT a,22-geitMITNO., <br /> APPROVED AS SUBMITTED <br /> C APPROVED WITH CORRECTIONS AS NOTED <br /> C NOT APPROVED-CORRECT&RESUBMIT <br /> These comments arc for your information. All work shell be dues <br /> in full compliance with all applicable septic and zoning code. <br /> Requirements including items not specifically noted in this review. <br /> KELP THIS PLAN SET ON SITE AT ALL TIMES <br />