Disneyland Evacuation Scare: 40,000 Ordered to Flee as Chemical Tank Threatens Explosion

Thousands of residents in Southern California were under evacuation orders over the Memorial Day weekend as a damaged chemical tank at an aerospace plastics facility posed a risk of explosion or further leakage. The incident prompted fears of toxic vapor release, affecting communities near the popular Disneyland theme parks.

Potential for Catastrophe Looms

The crisis began when a pressurized tank containing methyl methacrylate overheated at a GKN Aerospace facility in Garden Grove, approximately 38 miles south of Los Angeles. The tank, holding an estimated 34,000 gallons of the chemical, began venting vapors on Thursday. Officials are working against the clock to cool the tank and prevent a potential explosion, which could release toxic substances into the air and scatter shrapnel over a wide area.

Evacuation Zone Expands, Residents Stressed

Initially, residents in Garden Grove were ordered to evacuate. However, the evacuation zone was expanded to include parts of Cypress, Stanton, Anaheim, Buena Park, and Westminster, affecting around 40,000 people. While Disneyland and its neighboring theme parks were not under evacuation orders, park officials stated they were monitoring the situation and supporting affected employees.

The situation has caused significant stress and frustration for residents. Marco Solano, a 32-year-old resident, expressed his unease, stating, "I don't think that they should have dangerous chemicals in a neighborhood area, especially that dangerous that they have to evacuate people." He noted that the stress was exacerbating his existing health conditions.

Chemical Hazards and Expert Concerns

Methyl methacrylate is a volatile and flammable substance used in the production of plastics. Exposure can lead to severe respiratory problems, unconsciousness, neurological issues, and irritation to the skin, eyes, and throat. Purdue University engineering professor Andrew Whelton highlighted the potential dangers, comparing the situation to the 2023 East Palestine, Ohio, train derailment, though noting the smaller volume of chemical involved in the current incident.

"If an explosion releases the chemical into the air, it will be crucial to conduct detailed air monitoring specifically for methyl methacrylate," Whelton advised, emphasizing the need for targeted testing beyond generic volatile organic compound detection.

State of Emergency Declared

In response to the escalating situation, California Governor Gavin Newsom declared a state of emergency in Orange County. This declaration allows for the deployment of state resources to assist local agencies and potentially utilize state properties for shelters.

Cooling Efforts and Valve Failures

Orange County Fire Authority Division Chief Craig Covey reported that initial efforts to cool the tank might have been based on inaccurate readings. While external temperature readings initially suggested cooling, direct inspection revealed the internal temperature was rising, reaching 90 degrees Fahrenheit. The pressure relief valves on the tank are reportedly malfunctioning, preventing crews from safely offloading the chemical or reducing pressure.

"Valves on the tank are broken or 'gummed up' and prevented crews from removing the chemical or relieving the pressure on the tank," Covey stated.

Containment barriers have been erected to prevent any potential spill from reaching storm drains or local waterways. As the situation develops, residents remain displaced, awaiting the all-clear to return home.