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CONTRACT K-1415-141: A CONTRACT BY AND BETWEEN THE CITY OF NORMAN, OKLAHOMA, AND TETRA TECH, INC. IN AN AMOUNT NOT-TO-EXCEED $500,000 TO PROVIDE DISASTER RECOVERY MANAGEMENT SERVICES RELATED TO INFRASTRUCTURE DAMAGES SUSTAINED IN NORMAN DUE TO SEVERE WEATHER BEGINNING MAY 5, 2015.
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BACKGROUND: Between May 5 and May 24, 2015, the City of Norman experienced an EF-1 tornado and multiple flash flooding events. The attached graph, prepared by staff at the National Weather Center, illustrates the historic level of flooding and rainfall in Norman in May 2015. Over 23 inches of rain fell in Norman in May 2015 or nearly 10 more inches of rain than the previous May, 1957 rainfall record in Norman of 13.43 inches.
At least five of those rainfall events in May 2015 involved flash flood conditions according to the National Weather Center. Flash floods can be very damaging to the City's infrastructure, particularly roads, bridges and storm water systems. With each flooding event in May 2015, the City encountered more infrastructure damage and road closures. At one point in May, 35 of Norman's roads were closed to traffic due to damage or high water. Most of these roadways are located in rural east Norman. At present, the Public Works Department has developed an inventory of 52 damaged roads and bridges, as shown on the attached map and spreadsheet. The cost to repair this infrastructure is estimated to be $5-10 million.
City staff worked closely throughout May 2015 with officials from Oklahoma Emergency Management (OEM) and the Federal Emergency Management Agency (FEMA) regarding storm damage assessments and the potential for state and federal disaster relief financing. Mayor Cindy Rosenthal declared a local disaster by proclamation in May 2015. Governor Mary Fallin declared a state disaster by resolution in May 2015. President Obama established a Presidential Disaster Declaration for Cleveland County for damages from severe storms, tornadoes,...
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