On April 6, 2022, the U.S. Environmental Protection Agency (EPA) is scheduled to publish its proposed Federal Implementation Plan Addressing Ozone Transport for the 2015 Ozone National Ambient Air Quality Standards (NAAQS), otherwise known as the latest iteration of EPA’s Cross-State Air Pollution Rule or “Good Neighbor” Plan. The proposal would subject 26 upwind states to the “good neighbor” or “interstate transport” provision of the Clean Air Act because EPA is proposing to find that nitrogen oxide (NOx) emissions, which are a precursor to ozone formation, from the upwind states significantly contribute to downwind states’ attaining and maintaining the 2015 ozone NAAQS.
Last week, the U.S. Environmental Protection Agency (EPA) took two actions related to mobile source emissions under the Clean Air Act that represent the agency’s continued focus on transportation, climate change, and environmental justice.
On March 7, 2022, EPA announced newly proposed emission standards for heavy-duty vehicles and engines, which would apply starting in model year 2027. The proposed standards would reduce allowed emissions of nitrogen oxides from heavy-duty gasoline and diesel engines and set more stringent greenhouse gas standards for certain commercial vehicle categories. Beyond numerical reductions in emissions, the rule also indicates EPA’s broader shift in focus to environmental justice. (more…)