55A - RESO CA WATERFIX AND ECORESTORE PROJ

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Modernizing and improving California's water system is essential for the reliable delivery of water supplies to much of the state. About 30 percent of the water that flows out of taps in Southern California homes and businesses comes from Northern California watersheds and flows through the Sacramento -San Joaquin Delta. But the Delta's declining ecosystem and 1,100 miles of levees are increasingly vulnerable to earthquakes, flooding, saltwater intrusion, climate change and further environmental degradation. California Water% is the product of more than a decade of review, planning, and rigorous scientific and environmental analysis by water experts, engineers and conservationists, as well as unprecedented public comment. The proposed project will improve the security of our water system by fixing aging infrastructure and constructing new, skate -of -the art facilities using innovative technologies and engineering practices. Significant planning work for the design and construction of the project has been performed by the state, water agencies, and construction and engineering firms, which have determined the projectis buildable. Details of the project features, actions to address public comment, risk management, schedule projection and cost estimates are addressed in a new white paper and summarized below.. An extensive planning process evaluated various alignments, facility configurations and system options. • The system would be capable of diverting up to 9,000 cubic feet -per -second from the Sacramento River and capturing additional wet period water supplies after all environmental flow and water quality criteria are met. Proposed construction plans, including the use of dual 40 -foot diameter tunnels, is well within common practices in the engineering construction industry and will provide operational redundancy. ('g1 CALIFORNIA WATER FIX RELIABLE. CLEAN. WATER. 55A-7 EXHIBIT 2 Specific steps were taken during the design effort to reduce or eliminate the impact of the new facilities on the environment and Delta communities. As a result of input during the environmental planning process, the following changes were made: • Reduced size of overall project •Expanded use of tunnels for conveyance • Revised tunnel alignment • Reduced size and location of intermediate forebay • Reduced pumping requirements • Reduced construction impacts along Sacramento River sqa THFMETROGOLITANWATCRDISTRICT f OF SOUTHERN CALIFORNIA „p4