ELR Citation: 41 ELR 20331
No(s). 10-1105 (D.C. Cir. Oct 28, 2011)

The D.C. Circuit upheld an EPA rule issued in 2010 that amends and clarifies transportation conformity regulations as they pertain to hot spot analyses in particulate matter (PM) nonattainment and maintenance areas. Transportation conformity is required under the CAA to ensure that new federally sup...