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^ i Bonestroo <br />Rosene <br />Anderlik & <br />|\J| Associates <br />Engineers & Architects <br />OQO G lonestM <br />tedet W. toier& <br />JdMOh C A «llh. H. <br />Mifvfn I SorvM. <br />f Vhff. n <br />Gw t. ceoA n. <br />ThC.-'tt I N0>tt FX <br />ccoen G Scnwr.<ni ft <br />M. EbcfUn CFA <br />ICcJtn A. Gmsoa <br />Ibew w fom. fj <br />C FE. <br />Jn A. Bouftm FI <br />Mim A. Njnson. FI <br />TW iC. F^4 Ft <br />Micnjcf T, HiutmiftA, f| <br />tehCft F. FWtrtC. FI. <br />Giv 4 C UP«U. FI <br />T^om#J w Feetfjofi FI, <br />MlChK! C FX <br />Jimtl I Mjuna F8. <br />Kwcm F. Anoefioa Ff. <br />Mjrk t Ml Ft <br />Meit C FttM A ia <br />r^omul AnguL Ff <br />Hcw|.<c A SirMl Ft <br />DK hci Jl Wgrtoa Ft <br />Ma#t A seG F| <br />FFUp A CiJwtil Ft <br />Martina Ft <br />MlA a WilFi Ft <br />Thorrm t -.nomon A lA <br />Gory F ffywr. Fl <br />Mm I •§. <br />I Fninp Cfdvti rfli Ft <br />Me C AIA <br />AgneiM ling. AiCF <br />Jtr^ 0 Fe/«n f f <br />Cfcino O^Mfc Ft <br />Mrt t 0!t^QM At <br />GJ<y w Vontn. Ft <br />Kaftn I Wiemcn. Ft <br />t nm Ft <br />C^4nM A tfintsoA <br />Uo V fswettiry <br />Ninon M OW <br />January 14,1992 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 55323 <br />Attn: Ms. Jeanne Mabusth <br />Re: File No. 139 • 1704 Darlow Madge <br />875 Forest Arms Lane <br />Dear Jeanne, <br />We have reviewed the proposed plan for upgrading the drainage swale off Forest Arms Lane. <br />There is a concrete swale constructed from the culvert outlet for approximately KK) feet. The plan <br />would be to construct a rip-rap drainage channel from where the concrete ends to Lake <br />Minnetonka. <br />The proposed channel cross section is 8 feet wide and 2 feet deep. The channel should be <br />constructed with Qass II Rip-rap (Mn/DOT 3601) and filter fabric. The work shall be completed <br />in accordance with Mn/DOT Specification 2511. The rip-rap should not be grouted because of the <br />potential for movement and increase in hardcover. <br />Silt fence will be required between the Iake.shore and construction area until vegemtion is re­ <br />established. <br />Please contact this office if you have any questions. <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC. <br />Glenn R. Cook <br />GRC:li <br />139.cor