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231,0 Wiil0 flilk l <br /> RustyOlson s--Soil andCCPY <br /> Percolation e <br /> Joseph J. Olson--MPCA License #810 <br /> 11481 Riverview Rd. NE, Hanover, MN 55341 <br /> (763) 498-8779 fax (763) 498-8290 <br /> September 22,2011 <br /> Arthur J.Nelson Estate. <br /> Proposed Lot 3 <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 and location are chosen this design can be completed. <br /> The periodically saturated soils were located at 24-28 inches below grade(mottled soil).Due to the <br /> periodically saturated soils,a pressurized mound system will need to be installed to treat the septic effluent. <br /> The bottom 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 3 MPI. <br /> The absorption areas do not overlap. <br /> Use 7/32 inch perforations must be used on the laterals. <br /> All tanks need to be insulated if there is less than two feet of cover over the top of the tanks.A filter needs <br /> to be installed on the second tank.Clean outs must be installed on the end of the laterals for maintenance. <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 a light and sound device;this is in case of a pump failure. <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,ect.)human water&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 /> septic tanks every two years. +f S <br /> Cks, <br /> `1 <br /> Sincerely, cpl('Ok <br /> CITY OF O O <br /> SCPERMIT P EV9 <br /> INSPECTOR <br /> Joseph J.Olson DATE /0•2.5-1'PERMIT NO. <br /> n )VED AS SUBMITTED <br /> APPROVED AS NOTED <br /> NOT APPROVED-CORRECT&RESUBMIT <br /> These comments are for your information. All work shall be done <br /> THIS SYSTEM IS DESIGNED FOR in full compliance with all applicable septic and zoning code. <br /> Requirements including items not specifically noted in this review. <br /> BEDROOMS. ANY INCREASE IN NUMBER KEEP THIS PLAN SET ON SITE AT ALL TIMES <br /> OF BEDROOMS INVALIDATES THIS DESIGN. <br />