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, <br /> RECEIVED <br /> MAY -� 9 2012 <br /> Joseph Olson D.B.A. crnr o���orvo <br /> Rusty Olson's--Soil and Percolation Testing <br /> Joseph J. Olson--MPCA License#810 <br /> 11481 Riverview Rd. NE, Hanover, MN 55341 <br /> (763) 498-8779 Fax (763)498-8290 <br /> May 2,2012 <br /> Stonewood LLC. ORONO COPY <br /> 3205 Graham Hill Road <br /> Orono,Hennepin County <br /> This on-site Sewage Treaiment System is designed for a Type 1,Five-bedroom home in accordance with <br /> the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. <br /> The periodically saturated soils were located at 16"-20"(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 /> The soils at a depth of 12"have a percolation rate averaging 7 MPI. <br /> All tanks need to be insulated if there is less than two feet of cover over the top of the tanks.Clean outs <br /> must be installed on the end of the laterals for maintenance. <br /> The primary site will need a retaining wall on the downhill toe at the conservation easement line.T'he toe <br /> cannot cross the easement line. - <br /> The absorption area of the future site does not encroach into the primary site. <br /> A 1250 gallon pumping chamber will need to be installed to lift the effluent to the treatment area.The <br /> power supply and Switches must be located outside the manhole and pumping chamber in a weatherproof <br /> enclosure.A warning device must be installed with tight and sound devices;this is in case of a pump <br /> failure_The manifold and supply line must have back drainage to the pumping chamber. <br /> Keea all heavv eauipment off of the aroaosed treatment areas before,during and after construction. <br /> The area around both sites must be fenced off bv the contractor before anv construction begins. <br /> With proper installation and maintenance,this system should have no problem in treating septic effluent <br /> effectively.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 used they <br /> may cause harmful damage to your septic system. It is recommended that you pump the septic tanks every <br /> two years. <br /> Sincerely, <br /> ' - ORO;�TO COPY <br /> Joseph J.Olson <br /> CITY �F ORONb <br /> SF,PTIC Pf,,RM T lN RE � <br /> �S SYSTEM fS DESIG'�fb�'t�A' tNSPE� ���• <br /> ?,..$EAR04MS. Aalf iiVCREASE�I�1�U1V1BfR DATE • j ERMIT NO.�._._ <br /> E1f 6EDRQ4�IS 1NYAUDRT�S tH1S Df.SjGN. arrRovrn ns s�,r�tiiTr�o <br /> [] APPROVIiD WITH Cc�RRF.CTION9 AS rnTEQ <br /> Q TOT APPROVED-COkRF.CT&RESL`H�11T <br /> Thcsc commems arc 1'or your informution. All work shuli bc Jone <br /> in ildl compliuncc with:�II applicublc septic and zoning cudc. <br /> ORONO COPY k�quiremcnts including items not specil'icuily noted in Ihis rcview. <br /> KGCP TH(S PLAN SF.T Oh SITI:AT AL4 7I�iG5 <br />