On April 5, the U.S. Court of Appeals for the D.C. Circuit vacated a Trump-era rule that would have prevented the Environmental Protection Agency (EPA) from setting greenhouse gas (GHG) emissions standards for almost any...more
On January 19, the last full day of the Trump administration, a three-judge panel of the D.C. Circuit Court of Appeals vacated the Affordable Clean Energy (ACE) rule, the Trump EPA’s replacement rule for the Clean Power Plan....more
On January 20, newly inaugurated President Joe Biden signed an executive order titled, “Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis,” initiating review of nearly 50...more
Just before the inauguration of President Biden, the Trump administration surprised many by failing to revise the stringent CO2 standard for new coal-fired power plants. That standard, adopted by the Obama administration, is...more
The U.S. Environmental Protection Agency (EPA) has announced its decision to retain the current National Ambient Air Quality Standards (NAAQS) for fine particulate matter (PM2.5) and ozone (O3) under the Clean Air Act....more
The U.S. Environmental Protection Agency (EPA or Agency) issued final regulations governing cost-benefit analyses for Clean Air Act (CAA) rulemakings on December 23, 2020. The rule, titled “Increasing Consistency and...more
On December 23, the U.S. Environmental Protection Agency (EPA) published its annual civil monetary penalty adjustments in the Federal Register. The Federal Civil Penalties Inflation Adjustment Act of 2015 requires federal...more
On October 29, EPA published a proposed revision to its Cross State Air Pollution Rule (CSAPR) Update in response to the remand of the rule by the D.C. Circuit. The CSAPR Update was promulgated under the Clean Air Act’s “Good...more
On October 1, 2020, the Environmental Protection Agency (“EPA”) issued its final rule allowing for a source classified as a “major source” of hazardous air pollutants (“HAP”) under section 112(a) of the Clean Air Act to...more
State strategies for regulating air emissions during periods of startup, shutdown, and malfunction (SSM) have been a controversial topic in recent years. Air emissions can be higher during periods of SSM because emitting...more