EPA Staff, Academics Weigh Role Of Ozone 'Exposure' In NAAQS Debate

As EPA and states move to implement the agency's new, tougher ozone national ambient air quality standard (NAAQS), agency staff and air quality researchers are debating how to differentiate personal "exposure" to ozone which could be many times less than levels of the pollutant in ambient air would otherwise suggest. At a recent conference hosted by the Electric Power Research Institute (EPRI) in Washington, D.C., researcher Helen Suh of Northeastern University, an expert in the health effects of air pollution,...