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(��vt�Na/� ��I��'�U�� �� � ►�t/�:lC �� ,�'��`f s , <br /> _ - ,� ' � �' �� �,�,,, ,� ct i� <br /> �, � er�� a �-��ie � .9ey�� G C��'�rl <br /> �G � � ��' <br /> Joseph Olson D.B.A. <br /> Rusty Olson's--Soil and Percalation Testing <br /> Joseph J. Olson--MPCA License#810 <br /> l 1�t81 Riverview Rd. NE, Hanover, MN _55341 <br /> (763)498-8779 Fax(763) 498-$290 <br /> February 1.?O l 8 <br /> Nortan Homes <br /> 6i0 Pinehurst Court <br /> Orono, Hennepin County� <br /> This on-site Se�vage Treamient Systeni is designed for a Type 1, four-bedroom home in accordance with <br /> the Minnesota Pollution Control AgencS�Chapter 7080 and local ordinances. <br /> The periodically saturated soils were located at 12-20 inches(mottled soil). Due to the periodically <br /> saturated soils,a pressurized mound s�•stzcn �r�ith G inches of rock�vill i�eed to be installed to treat the septic <br /> efflucnt. The bottom ofthe treatment area must be located at least 3'above the saturated soils.This s��stem <br /> is designed with 6 inches of rock. <br /> The future site is dual rock beds using gate vatves for unlevel pressure distribution. <br /> The soils at a depth of 1?"have a percolation rate averaging 12 MP[. <br /> A?��0-eallon septic tank is desi�ned for this site.All tanks need to be insulated if there is less than t�4�o <br /> feet of caver over the top of the tanks.Clean outs must be installed on the end of the laterals for <br /> maintenance. <br /> Use 7/32-inch perforations on the laterals. <br /> A Darwin 1.i00-gallon pumping chamber��ill need to be installed to lift the efFluent to the treatment area. <br /> The po«�er supply and s�vitches must be located outside the manhole and pumping chamber in a <br /> weatherproof enclosure. A��arning device must be installed with light and sound de��ices;this is in case of <br /> a pump failure. A flo���measurement device must be installed. [ncluding but not limited to a water meter. <br /> event counter,running time clocks or eleetronicall��contro(led dosing. <br /> Keea all heavv equioment off of the aronosed treatment ttreas before,during and after construction <br /> The area around both sites must be fenced off b��the contractor before am construction beEins. <br /> With proper instatlation and maintenance,this system shauld have no problem in treating septic et�luent <br /> effectively.Nothing other than gra� water.(laundry. showcrs,etc.�Human water and toilet tissue should be <br /> disposed of into the septic tanks. Iron filters cannot go into the septic svstem.Garbage disposals are not <br /> recommended.Additives must not be used the��may cause harmful damase to your septic system. [t is <br /> recommended d�at you pump thc septic tanks every two years. v <br /> Sinc�rely, <br /> �� '6' Jose h J.Olson � <br /> p <br /> Ft�CEiVED <br /> �EB 0 8 2018 <br /> CITY OF ORONO <br />