Thousands evacuated in Southern California as officials manage a failing chemical tank to prevent potential leaks or explosions.

About 40,000 people are under evacuation orders and schools have shut down in Southern California due to a hazardous chemical leak.

Authorities in Orange County say they’re unable to control the valves on a tank that contains methyl methacrylate, a chemical used in the manufacture of plexiglass.

Around 40,000 people were ordered to evacuate parts of Southern California after a hazardous chemical leak at an aerospace manufacturing facility in Garden Grove triggered fears…