California officials race to avoid chemical tank explosion, thousands evacuate
USA Today
Last updated: May 25, 2026
California officials are responding to an overheated chemical tank at GKN Aerospace in Garden Grove, which is at risk of leaking or exploding, threatening over 40,000 residents. Evacuations are in place as efforts to cool the tank and neutralize the threat are ongoing. The situation is described as "unprecedented."
- Officials are implementing cooling measures for a chemical tank storing methyl methacrylate that has overheated, posing a risk of rupture or explosion. An evacuation order is in effect for Garden Grove residents as the internal temperature of the tank continues to rise. Despite efforts, the situation remains critical, with authorities seeking expert solutions to prevent a catastrophic failure.
- Air quality monitoring around the site has not detected contaminants, and specialized equipment is deployed to prevent gas release. Governor Gavin Newsom declared a state of emergency for Orange County, facilitating access to state resources. GKN Aerospace has apologized for the disruption and is cooperating with emergency services. A class-action lawsuit has been filed against the company by affected residents.
- Methyl methacrylate is a volatile, flammable liquid used in plastics and resins. Inhaling its vapors can irritate skin, eyes, and mucous membranes, potentially causing allergic reactions. While short-term and long-term respiratory effects have been reported from exposure in previous cases, the EPA classifies it as non-carcinogenic. Dentists and the aerospace industry utilize this chemical.
