Toxic Leak in OC Threatened Community
The threatened explosion of a military contractor’s toxic storage tank caused the evacuation of 50,000 mostly working class residents of Orange County.
On Thursday, May 21st around 3:30 p.m., a hazardous chemical leak was reported from a GKN Aerospace plant in Garden Grove, California. The chemical leak was caused by an overheating storage tank for methyl methacrylate, a toxic chemical used in the production of plastics such as those in airplane canopies. The failure was caused by a faulty valve in the tank’s cooling system leading to a rise in tank temperature and pressure. Additional safety mechanisms from GKN to halt the reaction on May 21st also failed. As a result, the GKN tank threatened a Boiling Liquid Expanding Vapor Explosion (BLEVE), endangering the lives and homes of thousands of Orange County residents.
Located in the middle of a working class neighborhood, the emergency prompted an evacuation order from city officials which displaced approximately 50,000 residents for five days before being lifted on May 26th. The threat was resolved with emergency response from OC Fire Authority to cool the tank as well as a partial crack which relieved tank pressure and heat gradually.
Major hub for military contractors
GKN Aerospace, a subsidiary of the British-based Melrose Industries, is an aerospace parts manufacturer serving contracts for plane engine parts and airframes with private and public sector clients. A 2025 report shows that 35% of Melrose Industries’ revenue from airframe sales comes from defense contracts, such as the contract for canopies for the F-35 fighter jet produced by Lockheed Martin. Currently, 48 of these jets are in use by the Israeli military to facilitate genocide in Palestine. GKN additionally serves contracts producing military parts for BAE, Leonardo, Airbus, other Lockheed Martin projects, drone projects for Anduril (an Orange County-based defense contractor), and direct government defense contracts. The GKN Garden Grove plant began operating in 2004 according to reporting from the LA Times.
The GKN Aerospace emergency highlights the glaring contradictions in the political economy and developmental priorities of Orange County. Southern California has been a major hub for defense contractors since World War II. Its location provided proximity to many of the largest military bases in the US, ideal geography and climate for weapons testing, and a massive supply of white- and blue-collar labor already trained for weapons production fueled by immigration waves and federal investment. The resulting economic development empowered a growing class of white suburban defense industry executives who relied on extracting the labor of Southern California’s diverse working class in urban manufacturing for private profit.
The organization of Orange County’s military-industry class went beyond economic interests, becoming the epicenter of the Cold War counter-revolution in the US and generating political machines which led Richard Nixon and Ronald Reagan to the presidency. Decades of deindustrialization have since destroyed most of the manufacturing base of Orange County. However, toxic plants remain siloed in marginalized communities like Garden Grove, threatening the same workers on whose backs Orange County’s capitalist class arose in the first place. After intervening years of capitalist deregulation, we are left with a harrowing chemical emergency created by a system of interconnected political and economic interests hostile to workers in Orange County and abroad.
Community response
In response to this emergency, the Orange County community has shown an inspiring dedication to direct mutual aid, with volunteer organizations including Orange County DSA, 714 Mutual Aid, Costa Mesa Mutual Aid, Orange County PSL, World Central Kitchen, and many others helping organize the delivery of food and essentials to sheltering Garden Grove residents. Our community understands what our politicians do not: we protect us. In the absence of a political infrastructure committed to the needs of the working class, we must continue to build networks of solidarity, mutual aid, and community defense capable of supplanting our atrophied state capacity.
Garden Grove residents are still struggling in the wake of the evacuation. Workers in Garden Grove are facing missing paychecks, unreimbursed hotel stays, and the stress of a narrowly avoided environmental catastrophe. Predictably, most insurance companies are refusing to pay out on claims for these losses. As capitalism repeatedly fails to provide care and safety for the working class, Orange County DSA remains committed to supporting the needs of Garden Grove workers and opposing the interests of the military-industrial complex in Orange County.