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(� RQ J 'S,'“) f I tu.N S 333 East Main Street <br /> P.O.Box 388 <br /> rf 1 <br /> 43'�%—�%— ' ' :1111111.V gMUiAM j ' ' Elk River, MN 55330 <br /> (763)441-7509 <br /> (800)554-7509 <br /> Fax:(763)441-9176 <br /> ECO SYSTEMS ENGINEERING,INC. e-mail:h2olab@lkdllink.net <br /> Date: 5/19/01 <br /> Guillaume& Lillian Bastiaens <br /> 625 North Ferndale Rd. <br /> Wayzata, MN 55391 <br /> Re: Changes to sewage treatment system 9/29/00. <br /> Please note the following changes to the proposed sewage treatment system. <br /> 1.)The requirement for an Orenco effluent filter has been changed to an Orenco Biotube pump vault <br /> model PVU57-1819. <br /> 2.)The requirement for a Goulds pump model#3885-E0718H has been changed to an Orenco pump <br /> model#P500712, 3/4hp, 220V. <br /> 3.)The requirement for five fiberglass riser lids has been changed to three each insulated fiberglass <br /> lids. The first septic tank shall have one riser with fiberglass lid, the second tank shall have two risers <br /> with fiberglass lids. <br /> 4.)Orifice sizing has been changed to 3/16", and spacing is changed to 3.5'. Orient the orifices upward to <br /> direct the spray against the top of the chamber. Place one orifice at the bottom of each lateral nearest <br /> to the manifold to allow drainage of the laterals. <br /> 5.)Orifice shields have been removed. <br /> 6.)Drainfield rock has been changed in favor of Infiltrator Brand chambers. <br /> ** See attached spreadsheets and drawings for additional construction details. <br /> Limitations-Our investigation, layout, design, and recommendations are based on data submitted. If conditions <br /> considerably different from those described in this report are encountered, we must be notified. If proposed <br /> construction is changed, we must be notified to evaluate the effect of the changes on the wastewater system. Any <br /> changes to the design must be approved by the designer and will be assessed additional design costs. If changes are <br /> made to the design without the knowledge and approval of the designer the design shall be void. <br /> All construction is to be in accordance with the ISTS regulations. Pipe type and size, installation requirements, <br /> septic tank construction, and other specifications not depicted in our report are to conform to ISTS regulations. <br /> The installer of the system is to be licensed by the Minnesota Pollution Control Agency. <br /> ,1"7:ze„_.fr, --jc----,- ----r=>-7,r..e_— <br /> Kevin J. Kloeppner <br /> Eco Systems Engineering <br /> License#208 <br />