California chemical tank explosion threat 'eliminated' but 50,000 remain evacuated in Orange County
Fire officials in Orange County, California, confirmed on Monday that the immediate threat of a catastrophic explosion from an overheating chemical tank has been eliminated, though evacuation orders for more than 50,000 residents across six cities remain in place.
The immediate danger passes
Firefighters have successfully eliminated the threat of a Boiling Liquid Expanding Vapor Explosion (BLEVE) from a compromised chemical tank at a GKN Aerospace plant in Garden Grove, California. Orange County Fire Authority Interim Chief TJ McGovern confirmed the development on Monday, stating that a crack discovered in the tank over the weekend helped dissipate dangerous internal pressure.
We are happy to report that the threat of a BLEVE is now off the table. That threat has been eliminated.
A weekend of emergency response
The crisis began on Friday when the tank, which holds close to 7,000 gallons of methyl methacrylate (MMA), overheated and began leaking. Emergency crews have been spraying the tank with water to stabilize its temperature following rapid heat increases since Thursday. By Monday, the internal temperature had been reduced from 100F (38C) to 93F (34C), according to officials.
- Chemical tank at GKN Aerospace plant in Garden Grove begins overheating and leaking.
- Governor Gavin Newsom declares state of emergency for Orange County.
- Emergency responders discover a crack in the tank that begins relieving pressure.
- Governor Newsom asks President Trump to issue a federal emergency declaration.
- Fire officials announce the threat of a BLEVE explosion has been eliminated.
Craig Covey, incident commander for the Orange County Fire Authority, explained that safety protocols limited temperature checks to nighttime hours to avoid the most extreme conditions. "We were not doing tank temperature checks during the day while the sun was on it in the most extreme conditions for that tank to go the wrong direction," Covey said. "We were only doing tank temperatures at night."
Mass evacuations and government response
More than 50,000 residents from six cities—Garden Grove, Stanton, Anaheim, Cypress, Westminster, and Buena Park—remain under evacuation orders as a precaution. California Governor Gavin Newsom declared a state of emergency for Orange County on Saturday and has asked US President Donald Trump to issue a federal emergency declaration.
We have received the governor's request for an Emergency Declaration, and it is currently under review. We urge all impacted residents to stay vigilant, follow direction and advice from local and state authorities, and stay safe.
Health risks and corporate response
The tank contains methyl methacrylate, a toxic chemical used in plastics and aircraft production. According to the US Environmental Protection Agency, contact with the substance can cause respiratory problems as well as skin and eye irritation. GKN Aerospace, a unit of UK-based Melrose Industries, expressed regret over the incident and apologized to residents for the uncertainty caused, pledging full cooperation with authorities.
Legal fallout begins
Two law firms, the X-Law Group and Presidio Law Firm, have filed a class action lawsuit against GKN Aerospace. The suit alleges the company "breached their duties of care" by "negligently storing MMA in dangerous conditions" and "failing to properly inspect and maintain storage systems and equipment." The company declined to comment on the litigation, while government investigators have not yet provided details on what caused the incident.
What comes next
Officials have repeatedly stated that no chemicals are currently leaking, but a leak remains a possible outcome. Evacuees described feeling "anxious to get back home" as crews continue working around the clock to monitor the situation. The evacuation order remains in effect indefinitely while authorities assess the ongoing risk.
