USFWS Don Edwards San Francisco Bay National Wildlife Refuge, Ponds A16 & A17 Design-Build

LOCATION:  California   |   OWNER:  U.S. Fish and Wildlife Service Regions One and Eight
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The Don Edwards San Francisco Bay National Wildlife Refuge (NWR) manages a variety of coastal-marine ecosystems over 46 square miles. This project updated infrastructure and added significant nesting islands to improve wildlife habitat and tidal water quality and wildlife viewing opportunities at former salt production ponds.

McMillen Jacobs performed design-build services for the restoration of 373 acres in two ponds. Scope of work included constructing water control structures, a large fish screen, and an outlet structure with slide gates and tides gates. Tasks included:

  • Demolition of existing intake structures and pipeline
  • Construction of river diversion structures
  • New concrete intake, outlet structures, culverts, and 63-inch intake pipes
  • Installation of fish screens
  • Channel improvements
  • Lowering levees, repairing existing levees, reconstructing new levees, and building new islands
  • Building earth plugs to divert water
  • Earthworks (50,000 cy of material excavated, moved, or placed)
  • Creation of access roads and levees
  • Habitat restoration
  • Environmental monitoring and compliance during construction
  • Modifications made to accommodate restrictions of access and protect existing structures and environment
  • Pipelines and concrete intake and outlet structures