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F-4. IGA WITH CITY OF SCOTTSDALE FOR UPPER CAMELBACK WASH DRAINAGE IMPROVEMENTS Approve Intergovernmental Agreement (IGA) FCD 2009A006, Upper Camelback Wash Drainage Improvements (Project), between the City of Scottsdale (City) and the Flood Control District of Maricopa County (District). This IGA is for cost sharing of the design of the Project. The estimated total cost under this IGA is $300,000 to be shared equally between the District and the City at $150,000 each. This Agreement will become effective as of the date it has been executed by all parties. The IGA shall become effective when recorded at the office of the County Recorder and shall expire ten (10) years from the date of recording or upon Project completion, whichever comes first. The City of Scottsdale (City) requested in the FY 2007/2008 Capital Improvement Program (CIP) Prioritization Procedure that the District participate in funding of the design and construction of the Project. The City’s Storm Water Master Plan recommended improvements to mitigate flooding hazards in the Upper Camelback Wash watershed. Hydraulic analysis of the existing drainage channels in the watershed shows the conveyance capacity of the existing system of open channels is limited to a 2-year event level in some areas, creating a flood hazard for an estimated 600 structures. The proposed Project will increase the existing system’s capacity and in turn the level of protection for this watershed. This item impacts Supervisory District 2. (C-69-09-067-3-00)