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^ i Bonestroo <br />Rosene <br />Anderiik & <br />I Associates <br />Engineers fit Architects <br />Otto G Borwttoo. PE <br />BocetT w tosene. PE <br />Jojcpn C Andefiik. PE <br />Marvin L Sofvaia PE <br />P<njnO E Turner Pg <br />Jam*! c Ofvjn PE <br />Glenn R Coot. PE <br />Tnomaj E Noyes. PE <br />Booett G Schunjcnt PE <br />Susan M Eberim C PA <br />Kenn A Gowon PE <br />R<nara W Pouer PE <br />DonakJ C BufganJt. PE <br />Jeny A Bouroon. PE <br />Mar* A Hanson PE <br />:eo K Eie'd. PE <br />Michael T Rautmann PE <br />Rocert R PV^fhe PE <br />David O Loskota. PE <br />Thomas W Peterson. PE <br />VKhae) C Lynch. P£ <br />James R Maic.xJ. PE <br />Kenneth P Anoerson P£ <br />Mark R Roifl PE <br />Rooert C Russek. ' A <br />Thomas E Angui PE <br />Howard A Santoro. “E <br />Oan*» j Edgerton. ?£ <br />Mark A Se« PE <br />Philip J Caswell. PE <br />Ismael Martinet. ®E <br />Mark D Waan PE <br />Thomas R Anoeison. AIA <br />Gary F Rytanoer. P£ <br />Mites a Jensen. PE <br />L Phdp CSravei in PE <br />Rene C PHjmart AIA <br />Agnes M Png. AiCP <br />Jerry O RertZSCh. PE <br />CfCrIO O'wie', PE <br />Charles A E"CkSOn <br />Leo M Paweisky <br />Harlan .M Cison <br />September 11, 1990 UJL iiij;::___.inii <br />Jlli <br />SEP 1 4 1990 <br />City of Orono <br />Box 66, Crystal Bay <br />Orono, MN 55323 <br />Attn: Jeanne Mabusth <br />Re: 139-1555 Marsh § Lafayette <br />Dear Jeanne: <br />Ve have reviewed the storm water storage required on the marsh at Lafayette <br />Subdivision. The 100 year return frequency storm would raise the water <br />elevation on the property to 932 with a 1.5 cfs outfall under Old Beach Road. <br />The high water elevation on the subdivision should be established at 932.0. <br />The outlet control structure should be designed to limit outflow to the 1.5 <br />cfs. <br />Please contact this office if you have any questions. <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC. <br />/ <br />Glenn R. Cook <br />GRC:ci <br />2335 West Highway 36 • St. Paul, Minnesota 55113 • 612-636-4600