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• Barr <br /> Engineering Company <br /> August 5, 1997 <br /> Mr. Les Proper P.E. <br /> Director of Public Works <br /> City of New Brighton <br /> 803 Fifth Avenue NW <br /> New Brighton, MN 55112 <br /> Re: Proposal <br /> Kari Lane Flooding Analysis <br /> Dear Mr. Proper: <br /> This letter presents Barr's proposal for analysis of the flooding problems at Kari Lane and <br /> 14th Street NW in the City of New Brighton. The paragraphs below describe the elements of work <br /> which we believe will be necessary to review the situation. A table which summarizes the <br /> estimated cost of the work is attached. <br /> Task 1—Scoping Analysis <br /> Barr will perform a preliminary hydrologic analysis in sufficient detail to determine the likely <br /> system response to intense short duration rainfall events and to identify potential solutions to the <br /> flooding problem. Alternative solutions are likely to involve creation of storage basins, increased <br /> system capacity, or flood protection works (such as berms or walls) to divert flowing water. Based <br /> upon the apparent system response and upon the alternatives which will most likely be analyzed in <br /> detail, the need for aerial topographic mapping will be evaluated. <br /> Upon completion of the scoping analysis, a meeting will be held with city staff to present the results <br /> of the preliminary analysis, determine the need for topographic mapping, and to plan an <br /> informational meeting with residents of the affected area. <br /> Task 2—Obtain Topographic Data <br /> If necessary, local topographic mapping will be obtained. The mapping would include the <br /> watershed tributary to the problem area (2-foot contour interval) with enhanced topography in the <br /> vicinity of the flooding. The map would be prepared by an aerial mapping subcontractor. If the <br /> aerial mapping is not required the total cost will be reduced by about$2,800, but some topographic <br /> surveys will still be necessary. If the map is needed, the surveys will be required for horizontal and <br /> vertical control. <br /> • <br /> 4-8300 Norman Center Dnve 0 555 West 27th Street J 202 West Superior Street 7 P.O.Box 130917 <br /> Minneapolis,MN 55437-1026 Hibbing,MN 55746 Duluth,MN 55802 Ann Arbor,MI 48113-0917 <br /> Phone:(612)832-2600 Phone:(218)262-3465 Phone:(218)727-5218 Phone:(313)327-1200 <br /> Fax: (612)832-2601 Fax: (218)262-3460 Fax: (218)727.5450 Fax: (313)327-1212 <br />