Richmond resident Sylvia Gray-White dons a face mask that she carries with her. Gray-White believes it helps protect her from pollutants in the air.
Three weeks after a massive fire at Chevron's oil refinery in Richmond, there are still a lot of open questions. What caused the unit to fail? Why was the emergency alert system so slow to engage? At a public meeting Monday night, some of the most pressing questions -- and accusations -- were leveled at the Bay Area Air Quality Management District. Reporter: Mina Kim
Regulators have said sample testing found nothing above background levels of air pollution. But many in Richmond remain skeptical.