"After a five-year review, U.S. EPA has proposed leaving unchanged its two primary air quality standards for nitrogen oxides.

EPA Administrator Scott Pruitt, acting under a court-ordered deadline, signed a rulemaking notice Friday, and then it was quietly posted on an agency website.

"This proposed decision has been informed by a careful consideration of the full body of scientific evidence and information available in this review," the draft rule says, citing the recommendations of EPA's Clean Air Scientific Advisory Committee and an agency assessment of recent research into the health effects of nitrogen oxides."

Sean Reilly reports for Greenwire July 17, 2017. [2]