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COOPERATIVE AGREEMENT ESTUDILLO CANAL IMPROVEMENTS BETWEEN MONARCH BAY DRIVE BRIDGE AND UNION PACIFIC RAILROAD, IN SAN LEANDRO, ALAMEDA COUNTY, CALIFORNIA, ZONE NO.2 PROJECT This Cooperative Agreement (Agreement) is made this 7�,-� day of \ , 2020 in the City of Oakland, State of California, by and between the City of San Lean ro, hereinafter referred to as "City" and the Alameda County Flood Control and Water Conservation District, hereinafter referred to as "District." City and District hereby agree as follows: A. Background 1. The Estudillo Canal in Flood Control Zone 2 (also known as Line A) between the San Francisco Bay and Union Pacific Railroad (UPRR) Crossing is an open earthen channel that bisects the Monarch Bay Golf Course and flows from east to west to the Bay. 2. The District has an existing flood control drainage easement between the San Francisco Bay and UPRR, and owns the remaining portion of the Estudillo Canal upstream of UPRR. The District maintains the entire Estudillo Canal including the portion of open earthen channel that bisects the Monarch Bay Golf Course downstream of UPRR. 3. The District conducted a Joint Feasibility Study with the U.S. Army Corps of Engineers for the entire reach of Estudillo Canal between San Francisco Bay and Coelho Drive upstream, and determined that the existing channel does not have sufficient capacity to convey the 100 -year design flow (1% annual chance of occurring) design flow. 4. The City owns and maintains the sediment handling basins (referred to as the Dredge Materials Management Site) downstream of UPRR, on the south side of Estudillo Canal. 5. The City owns and maintains an existing drainage structure (identified as Tide Gates #40 and #42 and part of the marshlands' tide gate hydrological system) at the south channel levee just downstream of UPRR, connecting the Roberts Landing Mitigation Marshes and Estudillo Canal. The structure consists of two 36" pipes with flap gates on the channel inboard side and sluice gates on the channel outboard side allowing tidal flow from the south to enter into Estudillo Canal.. 6. The City owns and maintains Monarch Bay Drive Bridge at the mouth of Estudillo Canal by San Francisco Bay. The south bridge abutment embankment protection is eroding due to daily tidal flows. The City desires to include the construction of the bridge abutment embankment repairs in the District's upcoming Estudillo Canal improvement project. 7. The District and the City are working together on the flood control improvements for the portion of Estudillo Canal between Monarch Bay Drive Bridge and UPRR, hereinafter referred to as the "Project." Exhibit A depicts the Project setting and components. This Agreement sets forth the responsibilities of both the District and the City for the implementation of the Project.