By Joel Beauvais, Claudia O’Brien, Stacey VanBelleghem and Bridget Reineking Over the past four decades, compliance with the ozone National Ambient Air Quality Standards (NAAQS) has proven to be among the most costly of Environmental Protection Agency (EPA) regulations. EPA tightened the primary and secondary ozone standards to 70 parts per billion (ppb) in late … Continue Reading