This is a U.S. Army Corps of Engineers - Chicago District opportunity for a five-year aquatic ecosystem restoration project in Antioch, Lake County, Illinois. The work involves restoring 785 acres of stream, riparian, and wetland habitats on land owned by the Lake County Forest Preserves. The estimated construction cost is between $5,000,000 and $10,000,000. A pre-bid meeting and project site visit is scheduled for January 7, 2026, in Antioch, Illinois. Contractors must be registered in SAM and the DoD PIEE system to access the solicitation and submit a bid.