June 9, 2026, 6:20 a.m. ET Recent years have seen a major transformation of the Detroit River riverfront in the city of Detroit, with the development of parks, trails, green areas, and fish and wildlife habitat restoration. But a major piece to the cleanup remains unresolved: the contaminated sediments on the river bottom along Detroit's shoreline, a toxic legacy from more than a century of often unregulated industrial dumping.