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i/* * ‘t < , «n r. f ./i. l>r*pic/rr <br />y Ot* • O . Ti • lo\- o^» t Ar>-!**fl<k f't • V.«(vtnL Soiv.iM Pf • <br />P-cn.« »f Ttmu.' fl •Gif.-'i iit T • f»'cj,n.n £ Nove\ PE • Rot>ea G ScfHiOichl PC • <br />»^r', ■» Boir^o*^ ”C • A Povcnt- ’t «nd Su%4«r* V CQer’ n CSf'^iO^ Cor*su>f^?s <br />.•?*'P*'*v n IS Hovv If f A S,vi»nfd p£ • K- art A Gordon Pf • Roherf P Pfeffp'ltr Pt • <br />Pifh^^riJ W fr.-,Tr- Pf • rv.vi-.tc '^E • AiA . v.^rk A H «non PL • <br />W n»ci T P.tHf f' Pt • TudKr»cM • r',»* iet*i P Afd •»^'on 1 • V.irk r Rolfi P£. • <br />iuinvy P Wii.'.«r\on PE I S • Pot^oit I <br />i'*‘ »' Sr P.*uf Roc^.'tff .i.tfi Si ffOoO V\ • AVquon Wl <br />~//2a <br />I /4 n t <br />♦ # <br />SEP 0 •■ <br />Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />September 19. 1996 <br />Mr. Michael P. Gaffron, <br />Asst. Building and Zoning Administrator <br />City of Orono <br />Post Office Box 66 <br />Crvstal Bav, Minnc.sota 55323 <br />Re: Albee Estate <br />File No. 139-gen <br />Dear Mike, <br />We have reviewed the grading plan prepared by Coffin & Gronberg for the Albee residence. The <br />property is located on Long Lake Boulevard overlooking Long Lake. We have several comments <br />in regards to engineering matters. <br />The two 3-foot tall retaining walls are proposed to control up to 8-feet of fill to be placed on the <br />existing slope. The wall as shown appears to be acceptable from an engineering standpoint. <br />However, more information must be provided to identify the specific wall material, type of fill and <br />the whether any type of tie-back restraints will be used. If a block wall is proposed, each block <br />manufacturer has specific design charts that may be used depending on the type of fill and loading <br />conditions. The two walls must be placed at least as far apart as they are tall (1:1) or a surcharge <br />loading must be used. If a boulder wall is proposed, the size of the boulders, wall batter and <br />embedment dimensions must be specified. <br />The drainage plan shows directing the storm runoff directly over the two walls. Some type of <br />draintile or storm sewer piping may be needed to prevent problems. Gutters and downspouts should <br />be considered to reduce the amount of runoff at the top of the w all. <br />Please contact me at this office if you have any questions regarding this matter. <br />Yours very truly. <br />BONESTROO. ROSENE. ANDERLIK & ASSOCIATES, INC. <br />h>. <br />Shawn D. Gustafson, P.E. <br />2335 West Highway 36 • St. Paul, MN 55113-3898 • 612-636-4600