Group enlightens EPA on new diesel engines’ indispensable role in cleaner air

During the first of three hearings on updated national air quality standards for ground-level ozone, Diesel Technology Forum Executive Director Allen Schaeffer told U.S. Environmental Protection Agency officials that new engine technology and accelerated upgrades to existing vehicles and equipment will be important in meeting future thresholds. EPA has proposed to strengthen ozone standards to a level within a range of 65 to 70 parts per billion to further reduce national air quality issues, while also taking comments on a level as low as 60 ppb.

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