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F-5. IGA WITH MARICOPA COUNTY DEPARTMENT OF TRANSPORTATION FOR THE RIGGS ROAD BRIDGE AT SONOQUI WASH PROJECT Approve Intergovernmental Agreement FCD 2010A004 for the Riggs Road Bridge at Sonoqui Wash Project (Project [#480]) between the Flood Control District of Maricopa County (District) and the Maricopa County Department of Transportation(MCDOT). This IGA provides for the rights-of-way acquisition, Design, Utility Relocations, Construction, Construction Management, and Operation and Maintenance of the Project. IGA 2010A004 shall become effective when executed by both parties and recorded by the Maricopa County Recorder, and shall expire ten years from the date of Recording by the County Recorder, or upon completion of the Project, whichever occurs first. The Project provides a vital element of the channelization and will be built under a combined contract with the channelization to avoid throwaway costs of a low flow crossing. The Project is being designed under the lead of MCDOT in coordination with the District’s channelization design. IGA FCD 2010A004 establishes a cost share relationship whereby MCDOT funds the differential between the cost of the Project and the cost of the low flow crossing that the District would have otherwise constructed under the channelization effort. This Agenda Item impacts Supervisor District 1. (C-69-11-013-3-00)

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F-3. AMENDMENT TO IGA WITH MARICOPA COUNTY DEPARTMENT OF TRANSPORTATION FOR THE RIGGS ROAD BRIDGE AT SONOQUI WASH Approve Intergovernmental Agreement (IGA) Amendment No. 1 FCD 2010A004A for the RIGGS ROAD BRIDGE AT SONOQUI WASH PROJECT (Project [#480]) between the Flood Control District of Maricopa County (District) and the Maricopa County Department of Transportation(MCDOT). IGA 2010A004A shall become effective when executed by both parties and recorded by the Maricopa County Recorder, and shall expire ten years from the date of Recording by the County Recorder, or upon completion of the Project, whichever occurs first. IGA FCD 2010A004 provides for the rights-of-way acquisition, Design, Utility Relocations, Construction, Construction Management, and Operation and Maintenance of the Riggs Road Bridge at Sonoqui Wash. The proposed IGA Amendment FCD 2010A004A, being concurrently presented to the Board of Supervisors (C-911-11-042-M-01) for approval provides for a revision to the terms of the agreement replacing 201st Street with 203rd Place to provide a replacement public access to Riggs Road compatible with future road improvements and enhanced traffic safety. The amendment establishes cost-sharing terms for the 203rd Place culvert crossing the Sonoqui Wash Channel. This Agenda Item impacts Supervisor District 1. (C-69-11-013-3-01)

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F-2. AMENDMENT TO IGA WITH MARICOPA COUNTY DEPARTMENT OF TRANSPORTATION FOR THE RIGGS ROAD BRIDGE AT SONOQUI WASH Approve Amendment No. 2 to Intergovernmental Agreement IGA FCD 2010A004 (Project #480.04.32) between Maricopa County, acting through the Maricopa County Department of Transportation (County), and the Flood Control District of Maricopa County (District) for the Rights-of-way Acquisition, Design, Utility Relocations, Construction, Construction Management, and Operation and Maintenance of the Riggs Road Bridge at Sonoqui Wash. The purpose of this Amendment No. 2 is to modify the funding and responsibilities for construction management services and clearly establish the specific responsibilities for maintenance of the Marsh Road box culvert. The District will provide to the County $62,682.42 for construction management services requested by the District for Marsh Road and previously completed. The District completed the Queen Creek and Sonoqui Wash Hydraulic Master Plan in 2000 that indicated that the most feasible solution to contain the breakouts from Sonoqui Wash was to increase the conveyance cross-section to contain the 100-year flood flows. The Sonoqui Wash Channelization Phase II Project accomplishes the second phase of improvements to the wash. The Riggs Road Bridge provides a vital element of the Channel Project and was built under a combined contract with the Channel to avoid throwaway costs of a low flow crossing. The Channel Project included installation of a channel crossing at 203rd Place and construction of Marsh Road and the Marsh Road box culvert that will be accepted by the County into its maintenance system. Approval of this Amendment No. 2 will authorize the District to execute payment of the $62,682.42 to the County and authorize the County to accept the $62,682.42 from the District for construction management services. The proposed IGA Amendment No.2 modifies funding responsibilities for construction management of the Marsh Road and 203rd Place portions of the Channel Project to be taken into the County maintenance system, and establishes maintenance responsibilities for the Marsh Road culvert. Except as modified in this Amendment No. 2, all other terms of the original Intergovernmental Agreement and Amendment No. 1 remain in effect. This Agenda Item impacts Supervisorial District 1. (C-69-11-013-3-02)