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. � , ,. Rusty Olson's--Soil and Percolation Testing ��,��,� .a..�r�oo�. �wra��l Joseph J. Olson--MPCA License#S10 ��DR�M�r�i�� 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 Fag{763) 498-8290 July 21,2001 Bill Tharkelson 440 Big Island Orono,Henn.Co. This on-site Sewage Treatment Systeru is designed for a Type 1,Two-bedroom home in accordance with the Mumesota Pollution Control Agency Chapter 7080 and local ordinauces. The soils on this site are SCS soils mapped-HbC-Hayed loam. The seasonally saturated soils were located at 18"-24"(moitled soil). IJue to seasonally saturatecl soils,a ptessutized Mound System wili need to be installed to treat septic effiuent. The bottom of the treatment area must be located at least 3'above the saturated soils. The soils at a depth of 12"have a percolation rate averaguig 7 MPI. All neighboring wells are located greater than 100'away from proposed treatment area. The new well for this property must have a well shaft greater than 50 feet deep. A variance will be needed to cross the easement.The supply line under the easement should be sleeved in a larger pipe to keep it from cn�shing if heavy equipment travels over it. A pumping chamber will need to be installed to lift the ef�luent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure. A warning device must be installed with light and sound devices;this is in case of a pump failure. T1ie m�wifold and supply line must have back drainage to the pumping chamber. The distribution pipes shall have their ends capped. Be sure the rock and sand fill materials are clean. The sod layer below the entire mounded area must be turned over,just break up the sod and be sute not to over work. Kez�all heaw,��,��'�,oment off of th�prop�� ' �atment area�before during and after con�trucrion The ar�� n.v.nnn hnth�,tP�mLat he fenced off �y the contmctor before�ny constn:ction be�ns This Dest�n is nQt valid and the Systsm y!��1 ne�ri t4 be relocated if fai�m tq�rotPct the areas pronesed for On-Site Sew� Treatment occurs. With proper installation and maintenance,this system should have no problem in treating septic ef3luent et�ectively. Nottung other thau gray water,(laundry,showers,etc.) Human water and toilet tissue should be disposed of into the septic tanks. Garbage disposals are not recommended. Additives must not be used;they may cause hannful damage to your septic system. It is recommended that you pump the tank everv year for i tank every rivo years for two tanks. incerely, i� "Jos�ep J.Olson ��