Chemical leak in Garden Grove: fifty thousand evacuated due to cracked tank

Published on May 26, 2026 | Translated from Spanish

A tank containing 7,000 gallons of methyl methacrylate, a toxic and flammable compound, developed a crack at an aerospace plant in Garden Grove, California. The incident forced the evacuation of approximately 50,000 people as firefighters spray the tank with water to keep it cool and prevent an explosion.

large industrial storage tank with visible crack leaking chemical vapor, firefighters in protective hazmat gear spraying water streams onto the tank surface to cool it, water cascading down metallic sides creating mist, warning signs and hazard placards on surrounding structures, aerial view showing evacuation zone with empty streets and distant residential areas, emergency vehicles with flashing lights positioned around the facility, chemical plume dispersing upward, photorealistic technical illustration style, dramatic overcast lighting, high-contrast industrial scene, detailed piping and valve systems visible on tank, ultra-sharp focus on crack area and water spray action, cinematic wide-angle perspective

Technical monitoring and chemical risk control 🔬

Authorities deploy gas sensors and thermal cameras to monitor the tank's bulging and potential leaks. Methyl methacrylate, used in the manufacture of acrylics and aerospace components, requires constant cooling because its flash point is low. The current strategy aims to stabilize the container's temperature while evaluating a safe transfer of the contents to another tank.

The neighborhood asked for water, but not for watering the garden 💧

While 50,000 residents packed their bags for an impromptu weekend, firefighters turned the tank into the county's most expensive water attraction. Spraying 7,000 gallons of chemical with water is like putting out a fire by pouring gasoline on it, but with hoses. At least the factory lawn will be fresh, though no one knows if they'll ever see it again.