The D.C. Circuit denied environmental groups' petitions to review NRC's denial of their requests to intervene in licensing proceedings for construction and operation of a spent nuclear fuel storage facility in New Mexico. An energy company had applied for a license to construct and operate the facil...

In a per curiam opinion, the D.C. Circuit granted industry groups' petitions and denied environmental groups' petition to review EPA's application of a 2022 rule that classified industrial boilers built after 2010 as "new" rather than "existing" sources of hazardous air pollutants. The industry grou...

In a per curiam opinion, the D.C. Circuit dismissed in part and denied in part challenges to EPA's 2022 denial of pending Renewable Fuel Standard (RFS) exemption petitions filed by small refineries. EPA had determined the only costs relevant to showing economic hardship were those caused by complian...

The D.C. Circuit denied a chemical manufacturer's and two trade groups' petitions to review EPA's 2020 rule regulating emissions from miscellaneous organic chemical manufacturing facilities. The petitioners challenged EPA's assessment of cancer risk from exposure to ethylene oxide emissions. The cou...

The D.C. Circuit denied a petition to review EPA's 2023 regulations that imposed new reporting requirements on biogas producers. An industry group argued, among other things, that EPA had no authority to regulate biogas producers and that three categories in the regulations—those related to biogas...

In a per curiam order, the D.C. Circuit denied states' and industry groups' motions to stay EPA's rule aimed at reducing pollution from fossil fuel power plants. Petitioners argued EPA acted arbitrarily and capriciously in determining that carbon capture and other emission control technologies were ...

The D.C. Circuit dismissed petitions to review EPA actions applying and enforcing regulations that govern disposal of coal combustion residuals (CCRs). Owners and operators of coal-fired power plants argued EPA's actions amended existing legislative rules governing disposal of CCRs and that the Agen...

The U.S. Supreme Court, 5-4, granted three states' and several industry groups' applications to stay enforcement of EPA's 2023 rule issuing a federal implementation plan (FIP) for 23 states whose SIPs the Agency determined had failed to adequately address new air quality standards for ozone levels u...

The D.C. Circuit rejected challenges to renewable fuels standards EPA set for 2020, 2021, and 2022. Cellulosic biofuel producers argued the standards were set too low, and petroleum refiners argued they were set too high. Specifically, the biofuel producers argued EPA misinterpreted or unreasonably ...

The Third Circuit denied power companies' petition to review EPA's issuance of a federal implementation plan (FIP) establishing nitrogen oxide (NOx) emission limits for selective catalytic reduction-equipped coal-fired electric generating units in Pennsylvania to address reasonably available control...