Officials in Southern California say a damaged chemical tank that forced the evacuation of nearly 50,000 people is no longer at risk of a catastrophic explosion, though evacuation orders remain in effect.
The incident began at GKN Aerospace in Garden Grove, California, where a 34,000-gallon tank containing methyl methacrylate showed signs of overheating last week.
Explosion Threat Eliminated
During a Monday update, the Orange County Fire Authority said temperatures inside the tank are now decreasing, reducing fears of a massive fireball or boiling liquid expanding vapor explosion (BLEVE).
“We are happy to report that the threat of a BLEVE is now off the table,” Interim Chief TJ McGovern said.
Officials noted the chemical inside the tank has started to solidify as temperatures dropped, helping stabilize the situation.
Evacuation Orders Still Active
Despite the improved conditions, authorities warned the emergency is not fully over. Residents inside the evacuation zone were told to remain away from the area as crews continue monitoring the tank and surrounding air quality.
OCFA Division Chief Craig Covey said any future leak or incident would likely be far smaller than the original worst-case scenario.
The evacuation area covers roughly 10 square miles and includes schools, hospitals, nursing homes, and critical infrastructure. Several roads also remain closed.
Toxic Chemical Raised Health Concerns
Methyl methacrylate, commonly used in plastic manufacturing, can irritate the eyes, skin, and respiratory system with short-term exposure, according to the EPA.
California Gov. Gavin Newsom previously declared a state of emergency in Orange County as firefighters worked around the clock to cool the bulging tank and prevent a disaster.
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