State Emergency Declared After Toxic Leak

Gov. Gavin Newsom declared a state of emergency in Orange County on Saturday, May 23, after a hazardous chemical incident at a Garden Grove aerospace facility forced large-scale evacuations and raised the risk of a spill or explosion. The emergency proclamation directs the California Governor’s Office of Emergency Services and other state agencies to support Orange County and nearby jurisdictions, while also making state-owned properties and fairgrounds available for shelter if needed. State and local officials said the incident centers on a damaged storage tank at GKN Aerospace that contains methyl methacrylate, a flammable industrial chemical used in plastics and resins. Tens of thousands of residents remained under evacuation orders through the Memorial Day weekend, with no official timeline for returning home. ### Why did the governor issue an emergency proclamation? Newsom’s May 23 proclamation was designed to unlock more state resources for Orange County as local responders tried to contain the chemical threat. The governor’s office said the order authorizes broader state support and opens additional shelter options for evacuated residents. Newsom said in a statement that “the safety of Orange County residents is the top priority” and that the state was mobilizing available resources to support local responders. (gov.ca.gov) Cal OES Director Caroline Thomas Jacobs said the agency was working with local partners to coordinate resources, share information and support the hazardous-materials response. The state directed residents to follow local officials for the latest evacuation information and to leave immediately if ordered to evacuate. (gov.ca.gov) ### What exactly happened at the Garden Grove site? The Orange County Fire Authority said the incident began on Thursday, May 21, when a 34,000-gallon tank at the GKN Aerospace facility in Garden Grove overheated and began venting vapors. Officials identified the chemical as methyl methacrylate, a volatile and flammable substance used in aerospace and plastics manufacturing. The facility is at 12122 Western Ave., according to local coverage and city emergency notices. (gov.ca.gov) Craig Covey, a division chief with the Orange County Fire Authority, said responders were dealing with a faulty tank whose valves were broken or clogged, preventing crews from removing the chemical or relieving internal pressure. Officials said the pressure-relief valves were no longer working, increasing concern that the tank could either leak uncontrolled material or explode. (cnbc.com) ### How large is the evacuation zone around the plant? Orange County officials said roughly 40,000 residents were under evacuation orders as the response continued on Saturday. ABC7 reported that the affected area extended across parts of Garden Grove, West Anaheim, Cypress and Stanton, while Garden Grove’s emergency page described the core evacuation zone as south of Ball Road, east of Valley View Street, west of Dale Street and north of Trask Avenue. (cnbc.com) Anaheim officials said Savanna High School, one of the evacuation centers, had reached capacity and would remain open for currently registered guests overnight. NBC Los Angeles reported that Freedom Hall in Fountain Valley had reached capacity Friday night, prompting efforts to identify additional shelter space. ### Why are responders worried about a spill or explosion? Orange County fire officials said the main danger is that rising internal temperature and pressure inside the tank could lead to a rupture or blast. (nbclosangeles.com) CNBC, citing the fire authority, reported that responders found the tank’s internal temperature had risen to 90 degrees late Friday, up from 77 degrees earlier that day. Covey said earlier cooling efforts appeared more effective than they were because an initial drone reading reflected the outside of the tank, not the inside. (anaheim.net) Andrew Whelton, an engineering professor at Purdue University quoted by CNBC, said an explosion would be the worst-case scenario because it could spread chemicals over a wider area and send shrapnel from the tank flying. Officials have also said a leak remains possible if the tank fails before crews can stabilize it. ### Where can evacuees get updates and shelter information? (cnbc.com) NBC Los Angeles reported that two additional evacuation centers opened Saturday: the Garden Grove Sports & Recreation Center on Deodara Drive, which accepts pets, and the Cypress Community Center on Orange Avenue in Cypress. Other sites identified by local officials included Ocean View High School in Huntington Beach, Savanna High School in Anaheim, John F. Kennedy High School in La Palma and Freedom Hall in Fountain Valley. (cnbc.com) Garden Grove and Anaheim both posted online emergency updates and evacuation maps, while Cal OES directed residents to its community resource page for information tied to the incident. Anaheim said its call center was operating from 8 a.m. to 5 p.m. and that the Orange County Public Information Hotline was available after hours. (nbclosangeles.com) ### What happens next for residents and responders? Cal OES said residents should keep checking local officials for evacuation instructions as the response remains active. Orange County and city agencies have not announced when evacuation orders will be lifted, and Anaheim said Saturday evening there were no updates on when residents could return. (gov.ca.gov) The next concrete step is continued stabilization work by Orange County Fire Authority crews and partner agencies at the GKN Aerospace site, while evacuees monitor the Garden Grove emergency map and shelter notices for changes. State officials said the emergency proclamation remains in effect as those operations continue. (gov.ca.gov)