EPA opens comment on proposed PM2.5 standards

EPA has published its proposal to tighten federal air quality standards for fine particulate matter (PM2.5) in the Federal Register Jan. 27, opening a 60-day public comment period for input on the controversial plan. The agency will take comment through March 28 and will likely receive numerous comments from environmentalists and possibly some states seeking to strengthen the plan, while industry groups may oppose any tightening of the national ambient air quality standards (NAAQS) for PM2.5 as unwarranted. EPA will...