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percolation TFfTTAND <br />MOUND SYSTEM <br />U.S. Marshal Service <br />574 U.S.Cointhouse <br />110 S. 4th Street <br />Minneapolis, MN 55401 <br />AtL 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 lOTH STREET <br />COLOGNE, MN 55322 <br />(612)466-2667 <br />M.P.C.A. LICENSE # 644 <br />April 25, 1997 <br />DESIGN REOinRF.Ii|p,]Nf <br />Cons^t a Mound system based on an estimated water usage of 750 per day. <br />Design size 10 X 63 rock bed \5'th a dS>^siopelf ^-S^J^sidiS^olfTlM?^ of KX. <br />Tanks that are reouirgd <br />2-1250 gallon tanks <br />I-1250 gallon pump tank <br />Clean washed 1 W aggregate rock <br />Sandy loam for covering mound <br />Loam dirt for the side slopes <br />33 tons <br />36 tons <br />156 tons <br />PRE-CONSTRUCTION PROCEDURE FOR this <br />Construction oroceedures for the on-site trgatmpnt avat^m? <br />MAINTENANCE; Pumping the tanks every 2 years will extend the life of vour system! <br />.• ; <br />5