A district court denied EPA's motion to dismiss a lawsuit brought by several states alleging that the Agency failed to implement and enforce its 2016 Emission Guidelines and Compliance Times…
The D.C. Circuit denied two petitions to review EPA attainment designations for the 2010 sulfur dioxide NAAQS. An environmental group argued that the Agency should have designated Gallia County,…
A district court granted in part an environmental group's request to compel EPA to produce guidelines for commercial or industrial solid waste incinerators (CISWI) and other categories of…
The Ninth Circuit affirmed the dismissal of oil and trucking industry groups' challenge to Oregon's Clean Fuels Program, which regulates production and sale of transportation fuels based…
The Ninth Circuit denied an environmental group's petition to review EPA's approval of a Montana SIP revision. The group argued that the approval was arbitrary and capricious because…
The D.C. Circuit vacated EPA's rule delaying the 2017 Chemical Disaster Rule, which established safety standards for chemical facilities. The Agency argued that it had authority under CAA §…
A district court granted in part an environmental group's motion for summary judgment to compel EPA to act on its 2016 Plan for the 2008 eight-hour ozone NAAQS adopted by the San Joaquin…
The D.C. Circuit denied environmental groups' petition to review a 2016 rule that EPA uses to determine whether an event caused by recurring activity is "exceptional" and thus…
The D.C. Circuit denied Delaware's petition to review EPA's decision granting the Philadelphia area an extra year to comply with national ground-level ozone standards. Delaware argued…
The D.C. Circuit denied petitions from industry groups challenging EPA's new kiln air emissions standards for brick and clay manufacturers, and largely granted petitions from environmental…