ENVIRONMENTAL GROUP SUES EPA OVER FAILURE TO UPDATE NOX STANDARD

An environmental group filed suit against EPA Sept. 12 over the agency's failure to update the national ambient air quality standard (NAAQS) for nitrogen oxides (NOx), which the group says the agency was required to conduct in 2001. The Clean Air Act mandates that EPA review and update NAAQS standards every five years but the agency has not reviewed NOx since 1996, according to the complaint. The case, Center for Biological Diversity v. Stephen L. Johnson, was filed in United...