Emergency officials lifted an evacuation order Monday for some of the people who live near a damaged tank containing a hazardous chemical in Southern California after temperatures inside the tank fell enough to eliminate the risk of a catastrophic explosion.
While there's no longer a risk of a major explosion at the GKN Aerospace Transparency Systems plant in Garden Grove, there's still a chance for a smaller blast or a fire, Orange County Fire Authority division chief Craig Covey said during a news conference.
An overnight evaluation of the tank containing 6,000 to 7,000 gallons (22,700 to 26,500 liters) of methyl methacrylate, which is highly flammable, showed a reduction of pressure inside the tank thanks to a crack that was discovered Sunday. About two-thirds — roughly 34,000 — of the evacuated residents can go home as a result, Covey said.
