The ongoing chemical tank emergency in Garden Grove is more than a localized industrial scare. It is a warning about how aging infrastructure, hazardous industrial materials, dense neighborhoods and emergency preparedness challenges can collide across Southern California.
The crisis began at a GKN Aerospace facility after a storage tank containing methyl methacrylate — a highly flammable chemical used in plastics and aerospace manufacturing — overheated and began venting vapors. Authorities warned the tank could either rupture and spill thousands of gallons of hazardous chemicals or enter what officials described as a potential “thermal runaway” explosion scenario.
Emergency officials said the tank contained roughly 6,000 to 7,000 gallons of methyl methacrylate, while the storage tank itself has a 34,000-gallon capacity…