Federal and state officials say the temporary sites for processing hazardous waste pose no threat, but residents are worried about their air and water.
The Palisades and Eaton fires, two of the deadliest and most destructive wildfires in California history, reached 100 percent containment more than three weeks after they began.
Cooler, wet weather is forecast to bring moisture to the parched landscape and reduce the fire threat. But heavy rainfall could also trigger flash floods in burn scars.
The police shared notes from a phone used by Master Sgt. Matthew Livelsberger, who fatally shot himself inside a Cybertruck outside a Trump hotel in Las Vegas.