The forum involving representatives of several agencies was scheduled for Tuesday evening in Paulsboro.
It was pushed back because by midday residents were being told to stay inside due to a high level of vinyl chloride in the air.
The gas was released when a freight train derailed Friday and some of the hazardous gas was released into the air.
In recent days, multiple shelter-it-place orders have been announced. That's resulted in closed schools and businesses and delays in cleaning up the accident.
(Copyright 2012 by The Associated Press. All Rights Reserved.)