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AMENDMENT NO. ONE TO CONTRACT K-1516-71: BY AND BETWEEN THE CITY OF NORMAN, OKLAHOMA, AND FREESE AND NICHOLS INCREASING THE CONTRACT AMOUNT BY $39,974 FOR A REVISED CONTRACT AMOUNT OF $286,786 TO PROVIDE ADDITIONAL ENGINEERING SERVICES FOR THE MAY 2015 STORM PERMANENT REPAIR PROJECTS AND BUDGET APPROPRIATION FROM THE CAPITAL FUND BALANCE.
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BACKGROUND: From the time period of May 5th to May 24th, 2015, the City of Norman experienced an EF-1 tornado and multiple flash flooding events. The attached graph prepared by the National Weather Center illustrates a historic level of flooding and rainfall in Norman in May 2015. Over 23 inches of rain fell in Norman in May of 2015, or nearly 10 more inches of rain than the previous May, 1957 rainfall record in Norman of 13.43 inches.
According to the National Weather Center, at least five of those rainfall events in May 2015 involved flash flood conditions. Flash floods can be very damaging to the City's infrastructure, particularly roads, bridges and stormwater systems. With each flooding event in May 2015, the City encountered more infrastructure damage and road closures. At one point in May, 35 roads were closed to traffic due to damage or high water, with most these roadways located in rural east Norman. The Public Works Department has continually tracked an inventory of damaged roads and bridges. To date, 66 damage locations from the May 2015 storms have been identified (as shown on the attached map). Two new locations associated with this proposed Amendment 1 are Site #3: Franklin Road Culvert Replacement and Site #17: Imhoff Creek Channel Repair.
City staff has worked closely since May 2015 with officials from Oklahoma Emergency Management (OEM), the Federal Emergency Management Agency (FEMA) and Federal Highway Administration (FHWA) regarding storm damage assessments and the potential for state and federal disaster relief financing. Mayor Cindy Rosenthal declared a local disaster by resolution o...
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