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Garden Grove chemical tank update: Cleanup efforts to begin and legal claims mount

Last updated: Friday, May 29, 2026 6:37PM GMT
Cleanup phase begins after chemical tank crisis in Garden Grove

GARDEN GROVE, Calif. (KABC) -- There is no longer a threat of explosion, fire or chemical leak for a damaged tank at the GKN Aerospace facility in Garden Grove, the Orange County Fire Authority announced on Tuesday night.

All evacuation orders were officially lifted at 7:30 p.m., allowing the final 16,000 evacuated Orange County residents to return home. Initially, 50,000 residents were evacuated from their homes last week.

A tank carrying 6,500 gallons of the highly toxic chemical methyl methacrylate (MMA) became unstable last week, causing the tank to heat up uncontrollably. For a few days, officials said the tank would either explode or spill out, and either outcome was inevitable.

Eventually, the tank cracked, allowing the pressure to release and eliminating the threat of a BLEVE, which stands for Boiling Liquid Expanding Vapor Explosion.

Then, crews worked a risky mission to confirm that the pressure had been released and to remove weather insulation from the outside of the tank to help the water be more efficient at cooling the temperature down.

Still, a threat remained for a fire or a small explosion. Firefighters continued to try to get the tank to stabilize and were eventually able to stop dousing it with water. On Tuesday afternoon, crews were seen freely walking around the tank and climbing on top of it.

By Tuesday night, OCFA declared that there was no longer a risk to surrounding residents and all evacuation orders were lifted. No injuries were reported.

The investigation into what caused the material in the tank to overheat is ongoing. Residents have already filed a class action lawsuit against GKN Aerospace.

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KABC logo
May 29, 2026, 4:04 PM GMT

Cleanup phase begins

The emergency response to the threat of a chemical tank explosion in Garden Grove will transition to a cleanup phase Friday morning.

The Orange County Health Authority will oversee cleanup operations, including waste removal.

The safety zone around the compromised tank has been reduced to 150 feet.

The emergency response to the threat of a chemical tank explosion in Garden Grove will transition to a cleanup phase Friday morning.

Meantime, people who live nearby are being asked to fill out an online survey on the city's response. The feedback will be used to improve future emergency responses and identify ways to support recovery efforts.

Mónica De Anda Image
May 28, 2026, 6:05 PM GMT

Legal claims mount against GKN Aerospace as EPA tests air

More legal claims have been filed against the company at the center of the chemical tank scare in Garden Grove.

Meanwhile, the EPA's emergency response team has installed 20 chemical detectors throughout the community, to ensure the air is safe.

More legal claims have been filed against the company at the center of the chemical tank scare in Garden Grove.

Thousands of residents in the area were finally able to return to their homes Tuesday, but they're now demanding answers and pushing for change.

"I hope they shut that place down," said Stanton resident Rubel Delgado. "I definitely hope they shut that place down."

KABC logo
May 28, 2026, 5:17 AM GMT

GKN Aerospace releases new statement after tank incident: 'We recognize there is more work ahead'

GKN Aerospace released a new statement on Wednesday, the day after evacuation orders were lifted for thousands of Orange County residents.

"We understand that the past several days have been difficult for residents, businesses, and the broader Garden Grove, Stanton, and surrounding Orange County communities. We are relieved that the incident has been resolved and residents have been able to return home. We are grateful to the emergency responders, public officials, technical specialists, and nonprofit organizations who worked tirelessly throughout the response.

'On behalf of the team at GKN Aerospace, I want to say how sorry we are for the uncertainty and disruption this situation has caused," said GKN Senior Vice President Steve Carlin, who oversees the Garden Grove site's programs. "I recognize how challenging this has been, particularly over the Memorial Day holiday. We are committed to understanding what occurred and identifying ways we can support those affected.'

Throughout the response, GKN specialists worked alongside fire officials, emergency responders, outside technical experts, and local, state, and federal regulatory agencies. Officials have reported that there was no chemical leak, no contamination, and have been no reported injuries.

'We are deeply grateful to OCFA and the entire first responder community for their efforts over the past several days," added Carlin. "We recognize there is more work ahead. Our focus remains on supporting the community, working closely with authorities, and continuing to ensure a safe and responsible path forward. I am personally committed to working with the Garden Grove, Stanton, and broader Orange County communities on these efforts.'

GKN Aerospace has been part of the Garden Grove community for six decades, dating back to 1966. Today, more than 500 skilled and dedicated local employees work at the site, including multi-generational families who have built careers here. The facility manufactures windows and canopies for commercial and military aircraft, as well as spacecraft.

Again, thank you to everyone who has supported the response effort over the last several days. We will continue to work closely with the appropriate authorities and remain committed to supporting our community in the days ahead."

KABC logo
May 28, 2026, 5:13 AM GMT

All roads closed due to Garden Grove tank incident reopen

All roads that were closed around GKN Aerospace as a result of the hazardous materials incident in the area have reopened, according to the Orange County Fire Authority.

When the final evacuation orders were lifted in Orange County on Tuesday, Western remained closed between Chapman and Garden Grove Boulevard.

By Wednesday afternoon, all roads were reopened.