Authorities in California reported on Sunday that a crack was discovered in a damaged tank containing toxic chemicals, which may help relieve pressure as the threat of an explosion has led to the evacuation of approximately 40,000 residents in the Garden Grove area of Orange County. The evacuation order was issued on Friday after the tank began leaking, releasing fumes over a densely populated area near Disneyland.
On Saturday night, firefighters examined the tank and identified a potential crack, which could be alleviating some of the pressure, according to TJ McGovern, interim fire chief for the Orange County Fire Authority. He stated that the operation provided valuable information for decision-making, although experts are still analyzing the situation.
The cause of the leak, first reported on Thursday, remains unclear, and it is unknown if the crack is related to the leak. The tank holds 7,000 gallons (26,000 liters) of methyl methacrylate, a flammable liquid used in plastic production. Firefighters have been spraying water on the tank to cool it, as it was reported to be heating up, raising concerns about a potential explosion.
As of Sunday, evacuees were still prohibited from returning to their homes, and shelters have been established for their accommodation. Disneyland officials confirmed that the resort remains open to guests while monitoring the situation. The US Environmental Protection Agency has noted that methyl methacrylate can irritate skin, eyes, and mucous membranes, and may cause respiratory and neurological reactions with acute or prolonged exposure. Emergency responders are working to set up containment barriers to prevent any spilled material from entering storm drains or waterways.