The EPA is announcing that it is using its authority under the Clean Air Act (CAA) to extend by up to 1 year the deadline for promulgating initial area designations for the primary sulfur dioxide (SO2) national ambient air quality standard (NAAQS) that was promulgated in June 2010. With this extension, the EPA is now required to complete initial designations for this NAAQS by June 3, 2013.
DATES: The new deadline is June 3, 2013.
http://www.gpo.gov/fdsys/pkg/FR-2012-08-03/pdf/2012-19043.pdf
Tags: Clean Air Act, NAAQS, National Ambient Air Quality Standards, Sulfur Dioxide