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. , , <br /> � ' ° <br /> PERCOLAT[ON TEST <br /> ' • AND <br /> MOUND SYSTEM DESIGN <br /> U.S. Marshal Service <br /> 574 U.S.Courthouse <br /> 110 S. 4th Street <br /> Minneapolis, MN 55401 <br /> Att. Kelly Sullivan <br /> SITE: <br /> 2245 French Lake Road <br /> Orono, MN <br /> PREPARED BY: <br /> DON'S BACKHOE AND EXCAVATING, INC <br /> 11585-1 IOTH STREET <br /> COLOGNE,MN 55322 <br /> (612)466-2667 <br /> M.P.C.A. LICENSE #644 <br /> Apri) 25, 1997 <br /> DESIGN REOUIREMENTS <br /> Construct a Mound system based on an estimated water usage of 750 per day. <br /> 750 g.p.d. x .83 sq. ft. g.p.p.d. =630 bed area-minimum design size. <br /> Design size 10 X 63 rock bed with a downslope of 23'-34', sideslopes of 11'-15', upslope of 10'. <br /> Tanks that are required <br /> 2-1250 gallon tanks <br /> 1-1250 gallon pump tank <br /> MateriAls required: note that all mAterials must be confirmed for proper depth on the site <br /> Clean washed sand as specified in MN 7080 386 tons <br /> Clean washed 1 %" aggregate rock 33 tons <br /> Sandy loam for covering mound 36 tons <br /> Loam dirt for the side slopes ]56 tons <br /> PRE-CONSTRUCTION PROCEDURE FOR THIS SITE: <br /> The plumbing in the house must be rerouted to the western outlet by a professional plumber. All others <br /> must be capped. All existing septic tanks must be located, pumped clean, and filled per code. The <br /> designated trees on the draifield site must be removed with as little traffic on the septic site as possible. <br /> Please call the city inspector before the tree removal takes place. <br /> Construction proceedures for the on-site treatment system• <br /> Follow the stricter of the city codes, Minnesota Chapter 7080 for installarion of this system, and design <br /> components for the installation. <br /> MAINTENANCE• Pumping the tanlzs everv 2 years will extend the life of your system� <br />