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1/1 Bonestroo <br />Rosene <br />Anderlik & <br />W| Associates <br />Engineers & Architects <br />Ori*C’ »*f <br />// • <br />C h! <br />Mj-'w* k <br />vrr>^*i f U**r^ <br />j I .«ii h», <br />•*> <br />Ci >• •'t h» <br /><4/*.... M C - ^ <br />*'« I «W t •WMit.li'l <br />A ■ >• <br />».d h .'2 <br />:?JV.'I ^ <br />ftUfCn t A| A <br />A •tk«i.:iM. 8{ <br />A 1*1 <br />M^njr I V.^4»*sirkn <br />>ii e »w-.i rt <br />w A I A <br />.•Jura'll f t^u-;jftn <br />rj <br />.%»**,in 'A i* f*f <br />*iu /*c <br />to j Av*** <br />Ajrti *V li A ic r <br />T aot'ji W A^rvd* >*i <br />V .-••Jr* C V/*^^ <br />;jf^$ < **f <br />>''V * ??wn .'r <br />^ A^ftwin hf <br />Vj.'Ii I ilc ?l <br />^u•t A !ca <br />Gary W Mg^n <br />CA-te: / tc^rr »► <br />AAIA kf AWL <br />i CevAcn <br />!• VWU^i ^J <br />H in«w^» <br />I i<« .i|i .a ri <br />, v^-ie^r fr< Af- <br />Cj»y f> «vv»/</ rj <br />S Ti.ilfirt'fi »l <br />VyA 4# '** <br />. a«n;« !•» <br />\n.*wi fi %.vjfw*t Af <br /><n ' • 'v« f*< <br />f h4*r\ ^ IM kw.ti <br />M l*.A«^^iy <br />•l^'Ofl V f*4tiv* <br />U»r^\ f » <br />June 21, 1993 <br />Ms. Jeanne A. Mabusth, <br />Building and Zoning Administrator <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay, Minnesota 55323 <br />Re: Robert Owens Shoreline Repair <br />File No. 139-183$ <br />Dear Jeanne, <br />We have reviewed the soil boring logs and construction details for the proposed concrete <br />modular block retaining wall on Robert Owens’ property. The proposal is to construct a <br />two tier wall with 3:1 (horiaontai to vertical) intermediate slopes and geogrid restraints. <br />The previously constructed embankment was constructed at a 1:1 or 1..5:1 slope and has <br />subsequently failed. We feel that the proposed wall is feasible from an engineering <br />standpoint <br />Due to the marginal soils in the area (some clayey silt), close construction supervision is <br />recommended to insure adequate compaction of the embankments. The soil should be <br />placed at near optimum moisture conditions. This may require that moisture correction <br />techniques be used If the soils are overly wet or, veiy unlikely, dry. <br />Please contact me at this office if you have any questions regarding this matter. <br />Yours very truly. <br />BONESTROO. ROSENE, ANDERT.IK & ASSOCIATES, INC. <br />Shawn D. Gustafson, P.E.