Editorial re-verification pending
Incident information pending re-verification
Original page title: Garden Grove Chemical Tank Emergency — Methyl Methacrylate Leak Forces Mass Evacuation
The incident information and time-sensitive guidance on this page are temporarily withheld. The last recorded status was checked on May 26, 2026, 5:00 PM UTC; we have not verified present conditions. Follow the responsible public agency for current safety instructions. The original citations below may be archival.
Original sources
- Emergency informationCity of Garden Grove
- 40,000 people under evacuation orders after chemical tank leak in Southern CaliforniaNPR
- Officials race to cool down tank containing toxic chemical as 50,000 residents remain under evacuation orderCNN
- Evacuation orders reissued and expanded as crews work to halt toxic chemical leakABC7 Los Angeles
- Gov. Newsom declares state of emergency for Orange County chemical leakCBS Los Angeles
- Several Garden Grove Unified campuses closed following chemical leak responseOrange County Department of Education
- Garden Grove chemical crisis: Live evacuation maps, closures and updatesLos Angeles Times
- Real-time California road and ramp closuresCaltrans QuickMap
- Air quality monitoringEPA AirNow
- Air quality information and advisoriesSouth Coast AQMD
- Find an open shelterAmerican Red Cross
- Garden Grove tank crisis updates: Evacuation zone reduced with threat of massive explosion eliminatedABC7 Los Angeles
- Garden Grove lifts some evacuation orders near compromised chemical tankMyNewsLA