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Air quality officials say they have not detected any contaminants in the area of the malfunctioning chemical storage tank in Garden Grove.
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The news comes as fire officials prepared to update the public on Sunday, May 24.
The tank did not explode or leak overnight.
“As of now, everything is status quo,” Orange County Fire Authority Capt. Brian Yau said as officials were meeting around 8 a.m. “Nothing’s changed.”
Yau said he expected an update by about 9:30 a.m.
Jason Lo, with the South Coast Air Quality Management District, said measures found no contaminants near GKN Aerospace at 12122 Western Ave.
“We are happy to report that levels are completely normal in our measurements,” Lo said in a video update posted on X.
Harry Allen, with the U.S. Environmental Protection Agency, said 24 air monitors installed in the area also did not detect any contaminants.
About 50,000 people were affected by evacuation orders in Garden Grove and parts of neighboring cities, and some of them posted on social media about suffering financial hits. At least half a dozen law firms pledged to file lawsuits seeking class-action status on behalf of those affected.
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U.S. Rep. Derek Tran, whose district includes the evacuated area, called for a “deep investigation” into the situation at GKN Aerospace, a manufacturer of parts for commercial and military aircraft.
Orange County District Attorney Todd Spitzer opened up a tip line, asking anyone with information on how this crisis developed to come forward. Tipsters were asked to call the OC DA anonymous tip hotline at 714-347-8714, to email prosecutors at [email protected] submit tips online.
Stanton Mayor David John Shawver said his whole city should evacuate, and that he wants the National Guard to patrol the city. The county would have to make that request. Stanton has about 40,000 residents.
As of Saturday evening, six evacuation centers were operating throughout Orange County. However, Freedom Hall at Mile Square Regional Park, Savanna High School and John F. Kennedy High School had reached capacity, according to city officials.
The following evacuation centers were operating:
• Los Amigos High School, 16566 Newhope St., Fountain Valley• Golden West College: 15744 Goldenwest Street, Huntington Beach• Ocean View High School: 17071 Gothard Street, Huntington Beach• Savanna High School: 301 North Gilbert Street, Anaheim (Full)• John F. Kennedy High School: 8281 Walker Street, La Palma (Full)• Freedom Hall: 16801 Euclid St, Fountain Valley, (Full)
More to come. Please check back for updates.
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This story was originally published May 24, 2026 at 9:11 AM.