Two IT air quality data systems that inform the U.S. Environmental Protection Agency’s (EPA’s) regulatory and compliance decisions are outdated, the U.S. Government Accountability Office (GAO) has suggested. The federal…
Clean Air Act
The U.S. Environmental Protection Agency (EPA) in May 2023 published a proposed rule that would establish new source performance standards (NSPS) and existing source performance standards (ESPS) for greenhouse gas…
The U.S. Environmental Protection Agency (EPA) has unveiled new greenhouse gas (GHG) standards for the nation’s power plants, moving to require both existing and new facilities to capture emissions of…
The U.S. Supreme Court has curbed the Environmental Protection Agency’s (EPA’s) options for limiting emissions of greenhouse gases (GHG) from power plants, an important environmental decision that could impact the…
The Environmental Protection Agency's (EPA's) "Secret Science" rule establishing new standards for consideration of certain "pivotal" scientific studies, which was slated to go into effect on Jan. 6 of this…
The Environmental Protection Agency (EPA) has finalized a change to a long-standing policy interpreting “ambient air”—a foundational concept under the Clean Air Act that applies to all types of air…
New guidance issued by the Environmental Protection Agency (EPA) on Aug. 20 to help states prepare for the second implementation period of the federal regional haze program puts emphasis on…
While the Republican-led U.S. House and Senate in the 115th Congress was mainly focused on reviewing, for modification or repeal, several environmental rules issued under the Clean Air Act (CAA),…
For many years, air pollution control (APC) rules and regulations have governed the design and economics of the world’s power generation fleet. These rules have had a tremendous impact, improving…
The Valley Energy Center in Orange County, New York, entered commercial operation on October 1 despite complaints from local officials and area residents about noise from the plant, among other…