Kevin Cromar in E&E News

While EPA has usually given more weight to the annual standard, Pittsburgh and other cities with relatively high short-term soot concentrations would also benefit from a cut to the daily limit, Kevin Cromar, an associate professor of environmental medicine at New York University, said in an email. Cromar is affiliated with the American Thoracic Society, which favors a 25-microgram daily exposure limit. ‘If EPA is serious about addressing the environmental inequities that exist in our communities, a more health-protective 24-hour standard is sorely needed,’ Cromar added.