Orange County Board unanimously ratifies emergency declaration after Garden Grove hazmat incident; residents press for clearer technical communication

The Orange County Board of Supervisors on May 27 unanimously ratified a proclamation of local emergency covering the May 22 Garden Grove hazardous-material incident, ordering periodic reviews and enabling reimbursement avenues for emergency response costs.

The action ratified a proclamation by the Emergency Management Council and sets an initial review for June 23, 2026, at 9:30 a.m., with further reviews every 60 days. County staff and emergency officials told the board they would transition field leadership to the U.S. Environmental Protection Agency and the Orange County Health Care Agency as remediation and recovery efforts proceed.

Why it matters: The declaration helps local agencies seek reimbursement for response costs and coordinate long-term remediation. It also framed a public conversation about how technical information was communicated during the evacuation and the need for better language access and sheltering supports.

Public commenters pressed county leaders on messaging and equity. Honey Ruiz, who said she lives near Magnolia and Garden Grove Boulevard, told the board she had to research the chemical herself and urged officials to “give people basic knowledge about the chemical we were dealing with” instead of using language that suggested a fireball-style explosion. Dawn Thomas said officials used “fear” language and urged clearer, research-based public briefings. Diana Covarrubias, who identified herself as an evacuated resident and equity professional, praised first responders but said early translated materials were lacking and that displaced residents — including monolingual Spanish and Vietnamese speakers, seniors, people with disabilities and undocumented residents — struggled to access shelters and information.

Fire and health officials described operational choices and health concerns. The fire chief said responders prioritized preventing a BLEVE (a boiling-liquid expanding-vapor explosion), then addressing a potential fire and a catastrophic spill; crews conducted nighttime reconnaissance, monitored internal tank temperatures (noting a 100°F reading triggered an abort) and used cooling and dilution systems until subject-matter experts confirmed temperatures stabilized. “When we got that word, that is when we lifted all the evacuation zones,” the chief said, adding that OCFA planned to transition from unified command to a support role as EPA and the Health Agency lead remediation.

Dr. CK of the Orange County Health Care Agency described methyl methacrylate (MMA) as “highly flammable and toxic” in vapor form and said inhalation at high concentrations can cause pulmonary edema and other serious respiratory injury; specialists supplied blast-radius and air-dispersion data that informed the decision to expand evacuation zones. Dr. CK said officials erred on the side of caution to prevent loss of life. “We do feel comfortable that everyone who is back in their home ... are safe,” Dr. CK told supervisors.

On reimbursement and claims, Michelle Anderson, the county’s emergency manager, said a federal declaration makes FEMA Category B costs — such as medical supplies, evacuations, congregate sheltering and security — eligible for reimbursement typically up to about 75%, but that individual assistance for displaced residents is not covered by that federal category. Anderson said a responsible party may be expected to accept claims and the county is pressing for the company to set up a claims process; she also said jurisdictions should submit initial damage estimates into the county WebEOC system by June 3 so those figures can be forwarded to Cal OES and FEMA recovery teams.

Supervisors commended first responders and staff for rapid coordination across local, state and federal partners, noting multiple shelters were opened and that there were no reported injuries. Several supervisors said the event underlined the need to examine land-use decisions that can place heavy industrial uses near neighborhoods, schools and parks.

The board’s action: The clerk read a resolution to ratify the Emergency Management Council’s proclamation of local emergency for the Garden Grove hazardous-material incident and to set a periodic review schedule. The motion to adopt was moved by the chair and, after no objections were raised, was declared adopted unanimously. The meeting was adjourned.

Next steps: County staff will continue monitoring, support damage-estimate submissions into WebEOC by June 3, coordinate reimbursement with Cal OES and FEMA, press the responsible company to establish an individual-claims process, and transition remediation leadership to EPA and the Orange County Health Care Agency. A review of the emergency declaration is set for June 23, 2026.