ALERT: We are no longer accepting new resident claims related to the Garden Grove GKN Aerospace chemical evacuation. This page remains available for informational purposes. Visit our Environmental practice page or our Class Action practice page to learn about other ways McCune Law Group may be able to help.
Did the chemical leak close your business? Visit our Garden Grove business losses page.
Garden Grove Chemical Evacuation Lawsuit — Orange County Toxic Exposure Lawyers
If the GKN Aerospace chemical leak in Garden Grove forced you out of your home, McCune Law Group wants you to have accurate information. We are no longer accepting new resident claims related to this evacuation, but this page remains available as a resource. Our attorneys have more than 35 years of experience representing California families against corporations whose safety failures put neighborhoods at risk.
This case review is closed. For related legal matters, visit our Environmental practice page or our Class Action practice page.
What Happened in Garden Grove
On May 21, 2026, a 34,000-gallon storage tank at the GKN Aerospace facility at 12122 Western Avenue began venting methyl methacrylate vapor. By the next morning, roughly 40,000 Orange County residents were under mandatory evacuation. On May 23, Governor Gavin Newsom declared a State of Emergency in Orange County. Orange County Fire Authority officials publicly said the tank was going to do one of two things: split open and spill 6,000 to 7,000 gallons of chemical, or go into thermal runaway and explode.
The current evacuation zone runs:
- North to Ball Road
- South to Trask Avenue
- East to Dale Street
- West to Valley View Street
That perimeter sweeps through parts of Garden Grove, Cypress, Stanton, Anaheim, Buena Park, and Westminster. Schools have closed. Two evacuation centers are open: Garden Grove Sports and Recreation Center (13641 Deodara Drive) and Cypress Recreation and Community Center (5700 Orange Avenue).
Who Was Eligible for These Claims
While we were accepting new claims, we reviewed cases for people who lived, rented, worked, or owned a business inside that zone, including:
- Displaced homeowners and renters stuck paying for hotels, meals, and pet boarding while they cannot get back into their homes
- Workers and hourly employees who lost shifts because their job site or commute is inside the evacuation perimeter
- Local business owners whose doors had to close, with revenue gone for every day the order stays in place. Visit our Garden Grove business losses page for the dedicated business-claim path.
- Residents with exposure symptoms like coughing, chest tightness, headache, dizziness, eye and throat irritation, or breathing problems linked to the vapor release
- Property owners worried about contamination, structural damage, or diminished value tied to the facility next door
Types of Losses Residents Reported
Every case was different. Categories of losses included:
- Out-of-pocket evacuation costs: hotel, meals, gas, pet boarding, replacement essentials
- Lost wages and lost business revenue
- Medical evaluation and long-term health monitoring for MMA exposure
- Property damage, contamination, or loss in value
- Emotional distress from a forced evacuation under threat of explosion
If you kept receipts, photos of where you stayed, work-loss texts from a manager, or screenshots of the evacuation order, save them. That paperwork matters.
Why Methyl Methacrylate Exposure Matters
MMA is a flammable industrial chemical used to make acrylic resins and plastics for the aerospace industry. The EPA lists short-term effects including respiratory irritation, eye and skin irritation, dizziness, and headaches. OSHA’s permissible exposure limit is 100 parts per million over an 8-hour workday. Workers exposed long-term to industrial levels have shown laryngitis, neurasthenia, and other respiratory effects.
Acute symptoms after a tank release like this one tend to look like chest tightness, coughing, wheezing, eye and throat burning, and reduced lung function. If you or a family member developed any of those during or after the evacuation, document them with a clinician now. That record is part of your claim later.
Why McCune Law Group Represents Residents and Families
We represent plaintiffs only. Our attorneys have more than 35 years of experience going after corporations whose conduct hurt the communities around them, and the firm has recovered more than $1 billion for our clients.*
In 2021, when an Amplify Energy oil pipeline off Huntington Beach spilled tens of thousands of gallons of crude oil into Orange County waters, McCune Law Group filed a class action on behalf of Orange County families, property owners, fishers, and businesses harmed. The litigation resolved through a $50 million federal class settlement. That is the kind of work we do when a corporate failure puts a community at risk.
Our product liability attorneys have filed and tried cases against large manufacturers, automakers, and industrial defendants. We are ready to do the work it takes to figure out what failed at the GKN Aerospace facility, who knew about it, and what the residents of Garden Grove and the surrounding cities are owed.
Frequently Asked Questions
Is McCune Law Group still accepting new resident claims for this matter?
No. This case review is closed. This page remains available for informational purposes.
Why is this page still online?
This page remains available for informational purposes.
What are my options if I was affected by the Garden Grove evacuation?
Visit our Environmental practice page or our Class Action practice page to learn about other ways McCune Law Group may be able to help.
Who was eligible to file a claim from the GKN Aerospace chemical leak?
Residents, renters, business owners, and workers inside the Orange County evacuation zone were eligible to file a claim. The zone ran north to Ball Road, south to Trask Avenue, east to Dale Street, and west to Valley View Street, covering parts of Garden Grove, Cypress, Stanton, Anaheim, Buena Park, and Westminster.
What is methyl methacrylate and is it dangerous?
MMA is a volatile, flammable liquid used to make acrylic plastics. Short-term exposure can cause respiratory irritation, eye and skin irritation, headaches, dizziness, and chest tightness. The Orange County Health Officer warned that an explosion could release MMA as a vapor capable of causing severe respiratory issues.
What costs were potentially recoverable?
Potential damages include hotel and meal costs, lost wages, pet boarding, medical monitoring, business interruption, and property-related losses. Every case is evaluated on its own facts.
How long do I have to file?
There are legal deadlines that apply to claims like these, and they vary depending on the type of claim and who is involved.
What if my symptoms have already gone away?
File the documentation now anyway. Symptoms that seem mild can matter when the case is evaluated later, and a contemporaneous medical record is more valuable than a memory of how you felt at the time.
Disclosures
* Past results do not guarantee a similar outcome. Each case is evaluated on its own facts.
** Costs and expenses may be advanced and recovered from a settlement or judgment when one is obtained.
Related: Environmental practice | Class Action practice | Garden Grove business losses page
Attorney Advertising
McCune Law Group, APC is responsible for this advertisement. The information provided on this website is for general information purposes only. The information you obtain is not, nor is it intended to be, legal advice. Use of this website or submission of the online form does not create an attorney-client relationship.
Counsel Richard McCune is licensed to practice only in the state of California. The law firm of McCune Law Group has attorneys licensed to practice law in AZ, CA, GA, MO, NY, and PA. McCune Law Group is a national firm that brings lawsuits in a majority of the states. In states where one of its attorneys is not barred, it does so by filing the complaint along with local counsel barred in that state.
The results discussed do not guarantee, warrant, or predict the results in future cases.
Final Note
This page is no longer accepting new resident claims for the Garden Grove GKN Aerospace matter. It remains active as an informational resource for affected residents.
