Engine Makers Pressure EPA For Less-Stringent NOx Limit Than California

October 13, 2021
Update Appended Heavy-duty diesel engine makers are pressuring EPA to set a less-stringent nitrogen oxide (NOx) limit in a forthcoming proposal than California set last year, hoping that if they can convince the agency to adopt a weaker limit, it will bolster their effort to ease the Golden State’s version, which they say is unworkable, sources say. The pushback comes as EPA is poised to send its long-awaited draft heavy-duty NOx and greenhouse gas proposal to the White House...

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