MS Comm. Environ. Quality v. EPA, No. 12-1309 (D.C. Cir. 2015)
Annotate this CasePetitioners challenged the EPA’s determination that certain geographic areas are, or are not, in “attainment” with the EPA’s ground-level ozone National Ambient Air Quality Standards (NAAQS). The court concluded that the EPA’s final designations of Delaware and Connecticut counties are consistent with a reasonable interpretation of the Clean Air Act (CAA), 42 U.S.C. 7401 et seq.; EPA's designation of Uinta Basin, Utah as "unclassifiable" is rational and in accordance with the CAA; EPA's refusal to use uncertified 2011 air-quality data during the designation process is rational and in accordance with the CAA; the EPA's use of 2008 to 2010 data to classify the counties within the Memphis, Tennessee area is rational and in accordance with the CAA; and the court rejected the remaining challenges. Accordingly, the court denied the consolidated petitions.
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