Evacuees from an aerospace chemical plant tank leak move to another shelter after the Garden Grove Sports and Recreation Center closed for the night in Garden Grove, Calif., Friday, May 22, 2026.AP Photo/Ethan Swope
40,000 Southern Californians ordered to evacuate amid threat of chemical explosion
Authorities in Orange County say they’re unable to control the valves on a tank that contains methyl methacrylate, a chemical used in the manufacture of resins and plastics.