Two environmental organizations have again taken the United States Environmental Protection Agency (“EPA”) to task for failing in its mandatory duty to determine whether greenhouse gases from aircraft engines cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare (“Endangerment Finding”), and, if so, to propose and adopt standards to limit those emissions. See Clean Air Act (“CAA”), 42 U.S.C. § 7571(a)(2)(A) (also referred to as “Section 231”).
Earth Justice and Friends of the Earth originally petitioned EPA in 2007, pursuant to CAA Section 231, which directs EPA to study air pollutants from aircraft “to determine (A) the extent to which such emissions affect air quality in air quality control regions throughout the United States, and (B) the technological feasibility of controlling such emissions.” Section 231(a)(1). Under subsections (a)(2) and (3), if EPA finds that emissions from aircraft and aircraft engines cause or contribute to “air pollution which may reasonably be anticipated to endanger public health or welfare,” it “shall” propose and...
