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Bonestroo <br />Rosene <br />AnderMk & <br />Associates <br />CJttoG Bonemoa "E <br />B oom W Bwcne PE <br />Joi^pn C Anoffi*, PE <br />VUivm L ScxvjU PE <br />E Turner PE <br />J»mei C 0«on PE <br />&enn # Coo*. PE <br />Thomai £ f'toyei PE <br />Rocen G Scfiunithr. PE <br />Sown M Eaerwi. C pa <br />Engineers & Architects <br />July 3. 1990 <br />Ke<^ A Gordon. PE <br />Pitftjrd W FbHer PE <br />Donjid C BorgiidL PE <br />Jerry A Bouroon PE <br />M*r* A Hjnjon. PE <br />Teo * Fpew PE <br />Mrrwer T (Uuorwnn. PE <br />Rooert R PWitrie PE <br />D*vk ) O loikou PE <br />Thomii W Peterjoa PE <br />M<rrjet C Lyncn, PE <br />Umti R MMnd PE <br />*fnn«n P ArxJerion. PE <br />M«r* R R d R i. PE <br />RDOrrt C RutMk. AItA <br />Tnomjj E Angui„ PE <br />HOkVATd A SjoTorO P£ <br />a*r^'A i<«imr>PEsIa Se<xPlC~v ■ <br />Thomm R Arxterwni A lA <br />Gjry f Ryunder. PE <br />M*et a Jensea PE <br />L Pftifcp Gr«v«< m. PE <br />Rene C P*urrv»a AIA <br />Agnei M Rmg. AlCP <br />Jerry O Peroscfi. PE <br />Ceciter OIMer. PE <br />Chjrlej A Enckson <br />Leo M P»rverj*y <br />Hiiun M brton <br />City of Orono <br />Box 66 <br />Crystal Bay. Minnesota 55323 <br />rJUL e 1930 <br />Attn; Jeanne Mabusth <br />Re: Michael Hilbelink <br />2180 Prospect Avenue <br />Our File No. 139-1502 <br />Dear Jeanne: <br />We have reviewed the storm sewer system between Briar Street and the easterly <br />pond on the French Creek property. The storm sewer system is adequate for a <br />one year return frequency storm. The water ponded on the Jentilucci property <br />would have to reach an elevation of 953.8 before overflowing to the ve«r.. The <br />existing conditions could result in some property damage from a storm with a <br />return frequency of 1 year or greater. <br />We would recommend that some minor grading be completed on the French Creek <br />property to eliminate the potential for damage. We have shown the proposed <br />grading on the attached plan and profile. There would be approximately 150 <br />cubic yards of material that would be removed to provide an overflow drainage <br />swale. <br />The grading would not eliminate all ponding on the Hilbelink and Jentilucci <br />property, the ponding however would be for short duration (less than i hour) <br />and be below the elevation of the Jentilucci parking area (952.0). <br />The grading work could be completed under a city contract or the developer <br />could do the work. The developer may be able to use all or a portion of the <br />material for grading around the new home. <br />Please contact this office if you have any questions or need additic ;il <br />information. <br />Yours very truly. <br />BONESTROO, ROSENE. ANDEANDERLIK & ASSOCIATES, INC <br />Glenn R. Cook <br />GRC:dh <br />End. <br />cc: Alex Jentilucci <br />2335 West Highway 36 • St. Paul, Minnesota 55113 • 612-636-4600 <br />I