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Ker�per � ,4sso�'s����, l��. i��� ,^�N�� ; ,-=� _ <br /> 721 Old Hwy. 8 NW =;:.- -- _. <br /> New Brighton, MN 55112 -,��,?t �i � ;;_;1,;,;� <br /> Telephone: (651) 631-0351 � <br /> FaX: (651) 631-8805 �.s��,' ,�j� ;J;.-;-;,;�,r,; <br /> email: kemper@pro-ns.net '�'�`�' <br /> July 14 , 2003 <br /> Bruce Vang (612/201-7259 cell) <br /> City Building Inspector <br /> City of Orono <br /> P.O. Box 66 <br /> Crystal Bay, MN 55323 <br /> Phone: 952/249-4600 <br /> RE: Nystrom/Olson Property <br /> Lots 13 & 14 , Coffee's Addition to Shadywood <br /> Concordia Street, Orono, Minnesota <br /> Dear Mr. Vang: <br /> As per your request, we have reviewed the asbuilt swale at the <br /> Nustrom/Olson property at 1725 Concordia Street in Orono. It is <br /> our opinion that this swale, approximately 2 . 5 - 4 feet wide and <br /> + 4 - 6" in depth, will be able to handle tl-ie 100 year storm (or <br /> 5 . 9" rainfall in 24 hours) . The addition of an area of riprap as <br /> shown on our survey and photo will prevent erosion to the swale and <br /> keep the water from entering the neighbor' s property to the north. <br /> I hope the enclosed information will document this swale to your <br /> satisfaction. 'lf y0U P1aV2 any questions� �i�ciS2 Cjl�'� Gi;'t Gi.iiC_: ._:. <br /> call . <br /> Sincerely, � <br /> _.� <br /> -�.�� f�_ ` � �, � <br /> �� <br /> Mark D. Kemper, PLS A fred B. Kemper, PE <br /> Professional Lanc1 S�_�rveyors & Engineers <br />