Threat of massive explosion from chemical tank eliminated but residents remain evacuated

WorldEnvironment
26 May 2026 • 3:20 AM MYT
The Independent
The Independent

The world’s most free-thinking newspaper

Threat of massive explosion from chemical tank eliminated but residents remain evacuated

  • The immediate threat of a catastrophic explosion at a damaged chemical tank in Southern California has been averted, following an overnight inspection that confirmed a crucial crack relieved pressure and cooled the volatile methyl methacrylate inside.
  • Despite this positive development, evacuation orders remain in place for approximately 50,000 residents in Garden Grove, south of Los Angeles, as authorities caution that the risk to public safety is still "ongoing."
  • Crews conducted temperature checks overnight, confirming a drop in the tank's internal temperature from 100 to 93 degrees Fahrenheit, after firefighters had repeatedly sprayed the tank with water since vapors began venting last Thursday.
  • The tank, located at GKN Aerospace Transparency Systems, holds between 6,000 and 7,000 gallons of methyl methacrylate, a chemical that can cause serious respiratory and neurological problems, with an explosion posing a risk of spreading the substance over a broad area.
  • Garden Grove residents have filed a class-action federal lawsuit against GKN Aerospace, which previously settled over $900,000 in violations with state regulators, arguing that property values will be impacted regardless of the incident's outcome.

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