The U.S. Environmental Protection Agency cancelled a grant that would monitor air pollutants near the Delaware City Refinery.

The $16 million project is scheduled to start later this year, pending approval from the Colorado Department of Public Health ...

Fewer than three miles from the Suncor Oil Refinery in Commerce City ... the plant has constantly violated the terms of the refinery’s air pollution permits, emitting toxic chemicals like ...

The Globeville, Elyria-Swansea and Commerce City communities in metro Denver are choked by air pollution from nearby highways, an oil refinery and a Superfund site. While these neighborhoods have ...

The agreement between the EPA and Colorado illustrates how the state has benefited from strong federal oversight even when it ...

Three former Environmental Protection Agency leaders say rollbacks proposed by the Trump administration endanger the lives of ...

Citgo Petroleum Corp. has agreed to a $160,000 fine in a proposed settlement with state regulators to end more than 200 alleged violations from air emissions ... Charles-area oil refinery between ...

With California’s government trying to force a transition to electric vehicles, its regulations are leading oil companies to shut down refinery ... the special fuel blends designed to prevent air ...

Elyria-Swansea and Commerce City communities in metro Denver are choked by air pollution from nearby highways, an oil refinery and a Superfund site. While these neighborhoods have long suffered ...