Authorities have evacuated a half-mile (805-metre) area around the chemical spill and the waterway was closed as well.
The US Coast Guard is working with the state Department of Environmental Protection to assess the situation.
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More than 11,000 BHS workers will be told they face redundancy consultation today.
Divisions among MPs and party supporters have intensified in recent weeks amid an increasingly fraught leadership battle.
Stephen Port, 41, is already accused of drugging and murdering four men he met on gay websites before dumping their bodies near a church.