EPA should address the potential for further NOx reductions at the earliest possible date.Heavy-duty trucks represent the second largest source of NOx emissions in the NESCAUM region, and our states remain very concerned about the need to further control NOx emissions from this sector. We thank the agencies for acknowledging the challenge that states continue to face in this regard, and we urge EPA to begin a rulemaking without delay to ensure that the next generation of trucks is not only more fuel efficient but also much less of a contributor to states’ air quality and public health problems.
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Learn more about the Clean Air Act
The Clean Air Act is the law that defines EPA's responsibilities for protecting and improving the nation's air quality and the stratospheric ozone layer. The last major change in the law, the Clean Air Act Amendments of 1990, was enacted by Congress in 1990. Legislation passed since then has made several minor changes.