A special hazmat team from O'Hare Airport was brought in to assist in this emergency.

The facility is a pulp and paper mill and a liquid packaging plant, according to the Washington Department of Ecology.

An all-night operation confirmed a crack in the tank in relieving atmosphere and pressure, OC fire officials say.

An explosion and fire at a chemical plant in Cicero, Illinois, sent thick smoke into the air on Wednesday afternoon, but officials said there are no air quality hazards in the area after the blast.

Disneyland has said it is monitoring a dangerous chemical tank that is threatening to explode in nearby Garden Grove. The entertainment giant released a statement as fears mounted across Orange County over a pressurized container at a GKN Aerospace plant that could rupture or explode,