EPA plans proposal for reducing NOx emissions by 2024

Excerpt from Transport Topics article: The Environmental Protection Agency said Dec. 20 that it is beginning work on a proposed rule that would set new standards to reduce oxides of nitrogen for heavy-duty engines beginning model year 2024, the same year a provision kicks in for the agency’s heavy-duty Phase 2 greenhouse-gas program. The announcement…

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Excerpt from Transport Topics article:

The Environmental Protection Agency said Dec. 20 that it is beginning work on a proposed rule that would set new standards to reduce oxides of nitrogen for heavy-duty engines beginning model year 2024, the same year a provision kicks in for the agency’s heavy-duty Phase 2 greenhouse-gas program.

The announcement came in an EPA response to petitions requesting that the agency take action to reduce NOx emissions from heavy-duty trucks.

The petitioners include the states of New York, Connecticut, Washington, Rhode Island, Massachusetts and Vermont, as well as local air-quality agencies from California, New York, and Ohio.

EPA said the Clean Air Act directs it to revise standards from “time to time” in order to protect public health. It has been 16 years since EPA last revised its NOx standards for heavy-duty highway engines, the statement said.

“The agency’s goal is to develop a program that could be adopted by EPA and the California Air Resources Board, creating a 50-state program, which would streamline compliance for manufacturers,” EPA said. “In developing the proposal, EPA will work with a broad range of stakeholders, including heavy-duty vehicle and engine manufacturers; the California Air Resources Board; labor groups; technology suppliers; environmental nongovernmental organizations; state and local air quality agencies; truck dealerships; trucking fleets; and truck drivers and owners.”

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