Overview
- In Garden Grove officials said on Monday that a visible crack released pressure from a heated methyl methacrylate tank, greatly reducing the risk of a boiling liquid expanding vapor explosion and allowing most of roughly 50,000 evacuees to return while some zones remain restricted.
- The leaking tank held methyl methacrylate, a volatile, flammable compound that the EPA says can irritate skin, eyes and airways and cause neurological or respiratory harm, and California Governor Gavin Newsom declared a state emergency to speed state resources to the response.
- Firefighters used continuous cooling, inspection and monitoring at the GKN Aerospace site and the company has apologized and pledged to work with authorities as teams assess the tank and guarded the area for any renewed hazard.
- Separately in Longview, Washington, a large caustic 'white liquor' tank ruptured or exploded on Tuesday, producing confirmed deaths and multiple injuries, leaving several workers missing and forcing a complex, dangerous recovery because the damaged tank remains unstable.
- Both incidents have drawn state and federal teams, including environmental and workplace safety agencies and the National Guard in Washington, and they are likely to prompt focused investigations into industrial storage safety and local environmental monitoring in the coming days.