The U.S. Fish and Wildlife Service (Service) is seeking proposals for a concession contract(s) for the operation and development of the Blue Heron Marina and Campground and Crab Orchard Lake Campground on Crab Orchard Lake in Southern Illinois, Crab Orchard National Wildlife Refuge (Refuge). Additional information about the facility and the process to submit a bid is contained in the attached Prospectus No. 33610-24-001. All proposals are due by Thursday, August 1, 2024, at 3:00 p.m. CST.