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f � <br /> ���, <br /> :: °� <br /> 200 Centra��fvenue <br /> 1 Buffalo, �I�fJ�.�5313 <br /> � � �. <br /> �I es�ad PFione 612-682-9329 ♦ �ax 612-682-90�02 <br /> �� <br /> . and <br /> � e . <br /> rv�ces August 20, 1998 <br /> Landform Engineering Company <br /> 510 First Avenue North <br /> Minneapolis, MN 55403 <br /> General Notes for Septic System Site Plan <br /> Lot 3,Block 1,FULLERTON ESTATES <br /> This site plan is designed for a 7 bedroom home with an estimated 1050 gallons per day effluent discharge together with <br /> a 2 bedroom guest house with an estimated 300 gallons per day effluent discharge. The attached soil borings show a loam <br /> to clay loam soil profile with red and gray mottles found at a depth of 24 to 43 inches at the primary and alternate septic <br /> sites. The percolation rates for this sites range from 6 to 10 minutes per inch. Based on this information the primary and <br /> alternate sites wil) require a mound system with 1.0 feet of sand beneath the upslope rock bed. <br /> Typically I will over design a system by 17%as a safety factor, but in this case I believe the effluent flows will resemble <br /> a Type II or Type III flow more so than the Type I flow that this design is based on as required. Taking this into account <br /> the system as designed(per Chapter 7080) should be more than adequate to treat the effluent produced by this residence. <br /> Effluent from the main house will gravity flow from the 1 st floor elevation via a 4 inch PVC pipe through 2 - 1500 <br /> gal lon septic tanks to the pump tank. Effluent from the lowest floor of the main house as well as the effluent from the <br /> guest house will be lifted to the 151 tank from where it will gravity flow through the other tank to the pump tank. The <br /> pump tank will deliver the effluent to the mound under pressure via a 2 inch PVC pipe. Somewhat atypical to this design <br /> are the 7/32 dia. perforations for the laterals. This was done to lower the gallons per minute required to pressurize the <br /> manifold in the rock bed. <br /> It is imperative that no compaction is allowed on the septic area before, during or after construction.. To insure that <br /> compaction does not take place I recommend that a barrier fence be placed around the perimeter of the primary and <br /> alternate septic areas during the construction of the house. <br /> Please refer to the enclosed site plan and design sheets for additional details. <br /> Please advise if you have any questions or concerns in regards to this site plan. <br /> Si cerel , <br /> T llestad MPCA Cert.#1410 DRP Lic #282 <br /> stad Land Services <br />