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‘ o ^PERCOLATION TF-STmiMOUND SYSTEM DESICN» . -' V U.S.Marshalijervice.■ 574 U.S.Couithouse‘ 110 S. 4th StreetMinneapolis, MN 55401 Att. Kelly Sullivan ♦♦SITE:2245 French Lake Road <br />Orono, MN <br />^ ♦ <br />PREPARED BY: <br />DON'S BACKHOE AND EXCAVATING, INC <br />11S85-110TH STREET <br />COLOGNE, MN 55322 <br />(612)466-2667 <br />M.P.C.A. LICENSE # 644 <br />April 25, 1997 <br />DESIGN REOinRF.MF.NTS <br />Construct a Mound system based on an estimated water usage of750 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 ivith a downslope of 23'-34’, sideslopes of 11'-15‘, upslope of 10'. <br />Tanks that are reouired <br />2-1250 gallon tanks <br />1-1250 gallon pump tank <br />r^mrtdi note that all materlalsjnust be confirmed for proper depth on the site. <br />Clean washed sand as specified m MN 7080 335 tons <br />Clean washed 156" aggregate rock 33 tons <br />Sandy loam for covering mound 35 tons <br />Loam dirt for the side slopes 156 tons <br />PRE-CONSTRUCTION PROCFfyURE FOR THIS SITF- <br />The plumbing in the house must be ic/outed to the western outlet by a professional plumber. All others <br />must be capped. Ail 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 trafiSc 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 avatemr <br />Follow the stricter of the city codes, Minnesota Chapter 7080 for installation of this system, and design <br />components for the installation. . <br />MAINTENANCE; Pumping the tanks every 2 ye^rs will extend the life of vour system!