Garden Grove toxic chemical tank incident and evacuation updates.

The latest update on an overheating tank filled with an estimated 7,000 gallons of methyl methacrylate is that firefighters were still trying to determine if some pressure had been released, after discovering a crack that could lessen the risk of a BLEVE, or Boiling Liquid Expanding Vapor Explosion. ABC 7 reports that more than 50,000 people in Orange County have had to leave their homes since the leak was discovered at the GKN Aerospace facility on Thursday. Update (11:48AM ET): The Orange County Fire Authority says that it now believes the threat of a BLEVE is “off the table,” with pressure and temperature in the tank dropping. Posts from this author will be added to your daily email digest and your homepage feed. Posts from this topic will be added to your daily email digest and your homepage feed. Posts from this topic will be added to your daily email digest and your homepage feed. Posts from this topic will be added to your daily email digest and your homepage feed. A free daily digest of the news that matters most. The Verge is a part of PMX Global, LLC, a subsidiary of Penske Media Corporation. © 2026 VM Publishing, LLC. All rights reserved. Sign in to see your notification