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Kemper & Associates, Inc. ����� rr�'� � � ��- <br /> 721 Old Hwy. 8 NW t�:��►il�a.�J <br /> New Brighton, MN 55112 ���,�� � �; �,�,�� <br /> Telephone: (651) 631-0351 <br /> Fax: (651) 631-8805 COT�G;:. �%��7f�o <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 /> Nt�strom/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 the 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. If you have any ques�iuns, p��a�se 5iti�� ��� a��i�� u <br /> call. <br /> Sincerely, ) <br /> ��, <br /> � <br /> �._.,<.� ��. �'" <br /> / <br /> Mark D. Kemper, PLS A fred B. Kemper, PE <br /> Professional Land Surveyors & Engineers <br />