Garden Grove chemical disaster spotlights regulatory gaps, UCI researchers say

A methyl methacrylate leak at a Garden Grove facility operated by GKN has led two UC Irvine academics to call for sweeping changes in how regulators track, disclose and respond to chemical disasters, they wrote in Voice of OC.

The incident lays bare what the researchers describe as compounding failures: unregulated chemicals, dismantled federal data tools and risk assessments that ignore the industrial density common in lower-income Orange County corridors.

Kim Fortun, a professor of anthropology at UC Irvine, and Margaret Tebbe, a doctoral candidate in the same department, wrote in Voice of OC that chemical disasters occur in the United States nearly every day, "yet both the public and public officials are often unaware, hindering efforts to reduce risks." The chemical at the center of the Garden Grove incident — methyl methacrylate, or MMA — does not appear on EPA or California's Accidental Release Prevention (CalARP) regulatory watchlists, meaning no standard prevention program would have flagged it in advance.

Data discrepancies deepened the researchers' concern. CalEPA's Regulated Site Portal had recorded the GKN facility as storing between 600 and 1,199 gallons of MMA, according to Voice of OC. Official reports, however, described the tank that failed as holding 7,000 gallons — a nearly six-fold difference.

The EPA has decommissioned two tools long used by residents and advocates to map chemical exposure — EJScreen and the Risk Management Program Public Data Tool — within the past 18 months, the researchers noted. California operates roughly 2,000 CalARP-regulated facilities, but without that federal infrastructure, community members have few ways to independently gauge nearby risk. Three CalARP facilities operate within one mile of the GKN site, yet regulators evaluate each plant in isolation without accounting for the cumulative hazard of dense industrial clustering, Fortun and Tebbe wrote.

One in three children in the United States live within the vulnerability zone of at least one federally regulated chemical facility, and that burden falls disproportionately on Black, Latino and low-income communities, Voice of OC reported, citing research on chemical disaster inequity. "Most communities have risks, but have not had an actual disaster—and disasters that might happen don't generate news coverage or discussion. When disasters do happen—as in Garden Grove—they cycle out of the news quickly," Fortun and Tebbe said.

The researchers use the GKN incident as a case study in their UCI anthropology course, submitting Public Records Act requests to map CalARP facilities and building vulnerability maps for student analysis. "We need our students—and the wider public—to understand and advocate for fundamentally new approaches to chemical disaster risk characterization, reduction and response," they said in Voice of OC.

Fortun and Tebbe pointed to the 1984 Union Carbide disaster in Bhopal, India — the world's worst industrial accident — as a historical warning that without structural reform, communities will remain unprepared for the next chemical emergency.