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Live updates: Tank leaking toxic chemicals in Orange County will spill or explode, officials say

Last updated: Saturday, May 23, 2026 9:32PM GMT
ABC7 Eyewitness News

GARDEN GROVE, Calif. (KABC) -- Emergency crews are sending an urgent warning that a chemical leak coming from a large storage tank at a Garden Grove aerospace facility could cause a spill or explosion.

Authorities are calling the toxic chemical leak in Garden Grove a "crisis situation," triggering evacuation orders for roughly 40,000 Orange County residents and school closures.

AIR7 video from overhead on Saturday morning showed unmanned fire hoses and an automatic sprinkler system spraying water on the overheated tank, which is facing a potential catastrophic failure.

The tank at GKN Aerospace contains a highly toxic and flammable chemical used to make plastics. Now, fire crews say the tank is going to fail in one of two ways: either with a spill of thousands of gallons of toxic chemicals or an explosion. Authorities just don't know when or how it will end.

"There are literally two options left remaining," Orange County Fire Authority (OCFA) Division Chief Craig Covey said. "One, the tank fails and spills a total of about 6,000 to 7,000 gallons of very bad chemicals into the parking lot in that area, or two, the tank goes into a thermal runaway and blows up, affecting the tanks that are around them that have fuel or the chemicals in them as well."

Covey stressed that "there is no active gas leak, no plume in the area," but he warned residents to heed the evacuation warnings and remain out of the area due to the possible spill or explosion. Officials said air quality was being actively monitored in the area, and all readings were still within healthy limits.

No injuries have been reported.

It was unclear what initially caused the material in the tank to overheat.

City News Service contributed to this report.

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May 23, 2026, 1:38 AM

Map shows evacuation order impacting 40,000 Orange County residents

The evacuation zone for a "crisis situation" in Garden Grove spans several blocks. Authorities say 40,000 residents are impacted. They are urging everyone in the zone to leave for their safety immediately.

The evacuation zone covers the area north of Trask Avenue, south of Ball Road, east of Valley View Street and west of Dale Street. Evacuation centers were established at the Garden Grove Sports and Recreation Center at 13641 Deodara Dr. in Garden Grove and the Cypress Recreation and Community Center at 5700 Orange Ave. in Cypress.

Small portions of West Anaheim and Cypress are also included in the evacuation zone.

The Garden Grove Police Department says they have done reverse 911 calls and are going door to door, urging people to leave. They say right now, there's about a 15% refusal rate.

A public information hotline was established at 714-628-7085. Another 24-hour call center is available at 714-741-5444.

Rep. Derek Tran, D-Westminster, issued a statement Friday saying he was "closely monitoring" the situation.

"My office is in close contact with local police, fire, and emergency response officials as they work to contain the hazardous materials, assess air quality, and ensure residents and first responders are safe," he said. "I am in contact with federal disaster relief officials, including FEMA and the EPA, to urge them to provide any available federal assistance for Garden Grove. I encourage everyone in the affected area to follow guidance from local authorities and avoid the impacted zones until further guidance is issued."

Gov. Gavin Newsom "has been briefed on the chemical leak in Garden Grove," the governor's office said in a statement, adding that the state's Office of Emergency Services, "And multiple state agencies are engaged and have been coordinating with local authorities since the incident emerged last night. Our office continues to closely monitor the situation, and we urge residents in impacted areas to follow guidance from emergency officials."

City News Service contributed to this report.

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1:57 AM GMT

Anaheim UHSD high school reschedules graduation due to chemical tank crisis

Seniors at Kennedy High School in the Anaheim Union High School District missed their graduation ceremony on Friday due to a chemical tank crisis happening at an aerospace facility in Garden Grove.

The district announced the Kennedy High School graduation, which was scheduled for 2 p.m., would be canceled due to the evacuation orders and emergency response happening in Orange County.

Kennedy High School and Handel Stadium are not located within the evacuation zone, but authorities said the decision was made "out of an abundance of caution and in the best interest of the safety and well-being of our students, families, staff, and community."

Small portions of West Anaheim and Cypress are included in the evacuation zone impacting 40,000 Orange County residents.

In a later announcement, the district announced the graduation ceremony was rescheduled for Tuesday, May 26, at 6 p.m. at the Anaheim Convention Center.

The district said further details regarding guest entry, parking and more will be shared by Kennedy High School.

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1:42 AM GMT

Vote center in Garden Grove closes, some drop boxes unavailable

The County of Orange Registrar of Voters says the voting center at the Garden Grove Sports and Recreation Center will not be operating Saturday, until further notice. The facility is serving as a care and shelter site for displaced residents.

"This emergency will not prevent residents from voting," county Supervisor Katrina Foley said in a statement. "The County of Orange Registrar of Voters moved quickly to protect voters, election workers, and displaced families while keeping voting access open. If you evacuated without your ballot, go to any Vote Center, request a replacement ballot, and cast your vote safely. Public safety comes first, and voter access continues."

The city also announced ballot drop boxes in the evacuation area remain unavailable. Those drop boxes include: Stanton Branch Library, Korean Martyrs Catholic Center and Chapman Sports Park.

Voters displaced by the evacuation may visit any vote center in Orange County to cast their ballot, the county said. Voters who evacuated without their ballot may request a replacement ballot at any vote center.

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1:36 AM GMT

Small portions of West Anaheim, Cypress included in evacuation zone

Small portions of West Anaheim and Cypress are included in the evacuation zone as crews work toward a solution for a chemical tank in crisis at GKN Aerospace in Garden Grove.

The evacuation zone covers the area north of Trask Avenue, south of Ball Road, east of Valley View Street and west of Dale Street. Approximately 40,000 residents live in the area, according to authorities.

A small part of West Anaheim overlaps in the area of the zone south of Ball Road between Dale Avenue and Fremont Street. A small portion of Cypress is also included in the zone just west of the impacted Anaheim area.

"Firefighters are actively working to cool an overheated tank and are clearing neighborhoods in the extended vicinity as a precaution," the city of Anaheim wrote in a post on social media.

Evacuation centers were established at the Garden Grove Sports and Recreation Center at 13641 Deodara Dr. in Garden Grove and the Cypress Recreation and Community Center at 5700 Orange Ave. in Cypress.

An Anaheim care and reception area was established at Savanna High School, located at 301. N. Gilbert Street.

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12:40 AM GMT

OCFA says temperature of toxic chemical tank in crisis has stabilized

The OCFA said crews have been able to maintain the temperature of the tank in crisis, buying them some time to come up with a creative solution.

In an update Friday evening, the Orange County Fire Authority said crews have been able to maintain the temperature of the toxic chemical tank in crisis at GKN Aerospace, buying them some time to come up with a creative solution.

For now, the two options on the table are a tank explosion or a spill of nearly 7,000 gallons of a toxic chemical used to make plastics.

"The positive news is we have been able to keep the tank temperature maintained," OCFA Division Chief Craig Covey said in an update on Friday evening. "The problem one that's in crisis and has been damaged, we've been continuing our water curtain on it, and our active monitoring has shown that the temperature of it has stabilized and is buying us time to continue to sort out: how do we fix this?"

He said the goal is not to let the tank spill or explode, but for now, it's going to require a creative solution. Water has been streamed on the tank for over 24 hours via unmanned hoses and an automatic sprinkler system.

"That was what we were handed: a leaking tank or a tank that blows up," Covey said at a news conference earlier Friday afternoon.

The incident at GKN Aerospace started around 3 p.m. on Thursday when one of the three tanks began releasing vapor.

OCFA helped cool it down, and evacuation orders were lifted. But this morning, officials issued an alarming update, saying a different tank was in crisis and there was nothing that could be done to stop it.

While authorities say the tank could spill out or explode, they say the most ideal option would be a spill.

"Once it comes out, it is no longer an explosive hazard, and our hazmat teams in their chemical protective suits can go in, neutralize and mitigate the vapors that will be coming off of that," Covey said.

In the meantime, police have been working to evacuate 40,000 people in the evacuation zone.

"From a law enforcement and fire perspective, our highest priority is your safety and security. So please listen to what we are telling you," said Chief Amir El-Ferra with the Garden Grove Police Department. "We are experiencing about a 15% refusal rate."

The chemical in question is highly toxic and highly flammable, and the short and long-term health risks are serious.

"It can impact respiratory system, cause skin irritation, eye irritation," said OCFA Division Chief Nick Freeman. "The other concern we have is it's extremely flammable, and in its current state, very reactive and can cause that explosion."

OCFA says it is making calls to experts across the country, working to come up with a better solution. Specialists from the Orange County Health Department and the EPA are also working to make sure the established evacuation zone will account for a possible explosion plume.