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California chemical tank heating up after evacuation in LA suburb, fire official says

Officials say the 7,000-gallon tank could fail or explode, and crews are cooling it while determining how to safely end the incident.

  • On Saturday, Orange County Fire Authority Chief Craig Covey maintained evacuation orders for 40,000 residents after a failing chemical tank at GKN Aerospace in Garden Grove threatened to explode, holding 7,000 gallons of "highly volatile" methyl methacrylate.
  • The crisis began Thursday when the tank overheated, but crews discovered Friday that broken, "gummed up" valves prevented them from adding neutralizing agents, risking a "boiling liquid expanding vapor explosion."
  • Orange County health officer Dr. Regina Chinsio-Kwong warned that inhaling the chemical's vapors can cause "significant irritation" in the lungs, nausea, and dizziness; Covey outlined two scenarios: ground spill or catastrophic explosion.
  • While most residents evacuated, Garden Grove police chief Amir El-Farra noted about 15% are refusing to leave, as crews build sandbag barriers to prevent any spill from reaching storm drains.
  • There is no timeline for when residents can return, as Covey stated letting the tank fail is "unacceptable" and officials are planning contingencies to mitigate environmental damage should the worst occur.
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33 Articles

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+2 Reposted by 2 other sources
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Temperature rising in chemical tank at risk of exploding in California

California's governor has declared a state of emergency after tens of thousands of Orange County residents were ordered to evacuate

·New Zealand
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Thousands still evacuated amid Orange County toxic chemical leak that could lead to explosion

"This thing is going to fail, and we don’t know when."

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Patch broke the news in United States on Friday, May 22, 2026.
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