Not far from where Ceci Carroll lives, a rock-mining company has polluted the air with dust across the San Gabriel Valley, she said. Now, as crews clean charred remains from the Los Angeles wildfires, she worries about a new potential source of contamination: a site to process hazardous debris from the Eaton Fire.

The two devastating wildfires in the Pacific Palisades and Altadena-Pasadena areas that killed 29 people, destroyed over 16,000 structures and scorched over 37,000 acres were fully contained Saturday,