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Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />A ^ • <br />XnPpr C Artar^i ^ <br />Marvel I tetV4M ^ <br />f T\jrr«H <br />G^nr- f C i^f <br />T»iofnai f Snap' ^ <br />Wwn M Ettv^ C <br />Car>^kMBrt <br />A IkerWi ^ <br />«re*^ A C mhwvs ff <br />8k'^^ ^ Af <br />[?.«ta^ O UJsACW <br />Wnt<^ C •w«i*A. A I • <br />• >Aa rw n <br />■ •fciTAanrv rt <br />M ft <br />t Af«mor> a a <br />OenjB C <br />**xy»iAs A k^Kk Af <br />^ Af <br />AdThnee Pf <br />ftAH;''JP^ P %M At <br />Aonn M ftm% A iC ^ <br />TAnr^ W ^n'san Pf <br />C if'vP' Pf <br />ernrs t Uoantr Pf <br />Jr»^ C" Pf <br />kc« j Ariinfsr* Pf <br />ft!I ■WIT P Asdft*AOi^ Pf <br />I Ml Pf <br />Mart A pf <br />Garv lA' Pf <br />PtM J uarext'' A A <br />Oartr ; f Ji|p»«n PI <br />A art k«v««ft PC <br />PNftp i C 4Stn^ Pf <br />M«« V ^mk pf <br />Pt <br />w p^iiwp sji«rr« Pf <br />L ^ Pf <br />Gary D ftjnac PB Pf <br />f 1M0 Hmr^ Pf <br />ftr«^ ft Pf <br />OxMP* ' ap ’^A Pf <br />k^JM^ D CA.Si#lPiA Pf <br />Cf^iO OtwrPr Pf <br />Pna G Hpuvi Pf <br />J0»w P C«»r Pf <br />Ch^artrs a l^k^ir <br />UfD M PaM«At> <br />Hanar M Ckwr <br />iarnrs f f mji«>aNdl <br />StP i ^ <br />,.w pu '*' <br />SeptcmbtT 9, 1994 <br />Mr Michael P. Gaftron, <br />Asst. Building and Zoning Administrator <br />City of Orono <br />Post Olficc 66 <br />Crystal Bay. Minnesota 55323 <br />Re; Ixar Residence <br />File No. 139-1%5 <br />Dear Mike. <br />\Vc have resiewed the propi>sal to replace existing retaining walls and riprap along the shoreline of <br />Spring Park Bay on the Uar residence at 2525 Dunwtxnly Avenue. The informatum submitted is <br />mcornplcte and unacceptable l^hc City should not continue a review of this application until a plan has <br />been prepared by a Registered Engineer. Information which is critical for this type of project includes. <br />- type of wall proposed <br />- method of priwiding drainage for walls <br />- method of tic-back restraint for wall <br />- geotechnical evaluation and'or type of fill proposed <br />- cross section of proposed wall and side slopes <br />- loading condition used for wall design <br />. indication as to which of the existing trees will be savxd <br />- description of the construction technique proptised tor working around the mature trees <br />and riH>t systems in the area <br />We would recommend a modular masrmry block wall be used for the improvements. <br />manufacturers which provide an engineered wall system tor almost any application, ibe wall should <br />have a draintilc line installed to function properly in clay soils. ,w„ a.f,i,-,.trv in <br />Wc do not recommend gravity type retaining walks, such as boulder walls, due ( ty <br />determining their effectiveness or durability. Wc do not recommend timber retaining wa s as <br />permanent scMution. <br />Please coniact me at this office if you have any questions regarding this matter. <br />Yours very truly. <br />BONESTROO. ROSENE. ANDERUK ASSOCIATES. INC. <br />0 <br />Shawn D. Gustafson, P.E. <br />2335 West Highway 36 • St. Paul, MN 55113 • 612-636-4600