In a video update made this morning by the Orange County Fire Authority (OCFA), the risk of the methyl methacrylate tank experiencing an explosion, otherwise known as a BLEVE (Boiling Liquid Expanding Vapor Explosion) has been eliminated.
Photo Credit: Screenshot of OCFA Incident Update, 5/25/26
According to the OCFA, temperatures in the tank have been measured as decreasing from a high upwards of !00° F to current levels at 93° F. Additionally, pressure in the tank has been reduced due to a crack found in the tank wall.
Nevertheless, the mandatory evacuation order remains in place until the threat of a potential major spill is eliminated.
We have previously provided details on this extremely hazardous toxic chemical storage tank emergency in Garden Grove, CA, in the following two articles:

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