 The sponsor, St. Lucie County, is preparing a General Reevaluation Report (GRR) for the project at their own expense that will evaluate extending Federal participation for an additional 50 years.Current Federal participation expires in 2020.The U.S. Army Corps of Engineers estimates the total cost of the project to be $75.9 million, with an estimated U.S. Federal Government share of $46.4 million.