EPA Grants States’ Petition for Reconsideration of Ozone National Ambient Air Quality Standards

Last week, the U.S. Environmental Protection Agency (EPA) granted petitions to reconsider air quality standards for ground-level ozone pollution set under the Trump administration in December 2020. Petitions were filed by a number of states, including New York, California, and the District of Columbia as well as various environmental groups. Currently, both primary and secondary ozone National Ambient Air Quality Standards remain at their 2015 levels of 70 parts per billion (ppb) over an eight-hour period. (more…)

VW Cert Petition Raises Clean Air Act Circuit Split

On August 27, 2021, Volkswagen AG and several affiliates (petitioners) filed a petition for a writ of certiorari to the Supreme Court of the United States seeking to overturn a decision of the Ohio Supreme Court that held the Clean Air Act (CAA) did not preempt state antitampering law. Petitioners assert that the Ohio Supreme Court’s decision was wrong because the CAA preempts state laws regulating emission controls. In support of their request to the U.S. Supreme Court, petitioners argue that there is a growing split among lower courts on the issue of CAA preemption, with the U.S. Court of Appeals for the Ninth Circuit (and now the Ohio Supreme Court) holding that the CAA does not preempt state emission control laws and the Alabama Supreme Court and intermediate appellate courts in Tennessee and Minnesota holding that it does. (more…)

Ninth Circuit Sends San Joaquin Valley Ozone Plan Back to EPA

On Thursday, the U.S. Court of Appeals for the Ninth Circuit granted a petition for review of the Environmental Protection Agency (EPA) final rule approving the State of California’s plan for meeting the ozone air quality standard in the San Joaquin Valley and remanded the plan to EPA for further consideration. EPA approved the plan in 2019, which included a single contingency measure that would be activated if the plan did not achieve reasonable further progress toward meeting the ozone standard. A local environmental group, the Association of Irritated Residents (AIR), challenged the approval and argued that the single contingency measure was arbitrary and capricious because it provided for only nominal emissions reductions. (more…)