ELR Citation: 44 ELR 20111
No(s). 13-1069 (D.C. Cir. May 9, 2014)

The D.C. Circuit denied industry groups' petition for review challenging EPA's 2013 primary NAAQS for fine particulate matter. In the final rule, EPA lowered the level of the particulate matter NAAQS from 15.0 μg/m3 to 12.0 μg/m3, a level slightly lower than the lowest concentrations reported as c...