The primary historic industrial contamination in the Gowanus Canal is coal tar from three manufactured gas plants. US Environmental Protection Agency (EPA) and the Potentially Responsible Parties (PRPs) are working to design and coordinate dredging on average 10’ of heavily contaminated sediment from the bottom of the Gowanus Canal and construct a multi-layer cap. Pilot testing for best dredging practices are currently taking place in the 4th Street Turning Basin and are nearly complete. Next, the bottom of the 4th Street Turning Basin will be capped to prevent more contamination from seeping into the water.

Learn more:
Gowanus Canal Community Advisory Group (CAG)
EPA Gowanus Canal Superfund Site