At the Suncor Oil Refinery in Commerce City, some air pollution is visible to the naked eye. But a new study found another unexpected, and invisible, contaminant: radioactivity.

Dust blows off of the Oceano Dunes State Vehicular Recreation Area, creating unhealthy air quality on the Nipomo Mesa. In ...

Major oil companies, including Shell and precursors to energy giants Chevron, ExxonMobil and BP, were alerted about the ...

Communities adjacent to the polluted Tijuana River can now check both the air around them for contamination before they decide to venture outdoors. The region’s air pollution cops just released […] ...

The penalty is the result of a 2019 inspection that found the refinery failed to report emissions from its hydrogen system ...

Phillips 66 will work with the Air Pollution Control District ... to a level lower than when the refinery operated, the report said. Demolishing the oil refinery will harm state and federally ...

Waiting inside the club’s oak-paneled rooms were top executives from California’s major oil companies. They were the Air Pollution Foundation’s largest funders, and they were not happy. This frank ...

Built between the 1930s and early 1980s, petcoke facilities treat the remnants of crude oil refining. Environmental groups ...

The Valero Refining Co. has been fined the largest-ever penalty by Bay Area air quality regulators for a history of toxic ...

PHILADELPHIA—The company redeveloping the site of what had been the biggest oil refinery on ... of living near the refinery, the largest single source of air pollution in the city of Philadelphia.