Environmental Defense, et al., Petitioners v. Duke Energy Corporation et al. País/Territorio Estados Unidos de América Tipo de la corte Nacional - corte superior Fecha Apr 2, 2007 Fuente UNEP, InforMEA Nombre del tribunal Supreme Court of the United States Sede de la corte Washington D.C. Juez SouterThomas Número de referencia No. 05-848 Idioma Inglés Materia Cuestiones jurídicas, Aire y atmósfera Palabra clave Calidad del aire/contaminación del aire Contaminación del aire (fuentes fijas) Emisiones Resumen Respondent Duke Energy Corporation redesigned the workings of some of its coal-fired electric generating units. Petitioner Environmental Groups filed a complaint claiming that Duke had violated an air pollution control scheme to the Clean Air Act by doing the work without permits. The Environmental Protection Agencies’ (EPA) regulations for the scheme in question, called Prevention of Significant Deterioration (PSD), required a permit for a modification of a stationary source of air pollution when it is a “major” one. There was a second scheme to the Clean Air Act, however, called Source Performance Standards (NSPS). This scheme also covered modifications, but EPA’s regulations for the NSPS required a permit only if a modification would increase the discharge of pollutants measured in kilograms per hour. The fourth Circuit held that the two regulations had to be interpreted identically, and that both regulations required an increase in the hourly emissions rate as an element of a major “modification”. As none of Duke’s projects increased hourly emissions rates it held that none was a “major modification” requiring a PSD permit. The Supreme court was of the view that principles of statutory interpretation did not rigidly mandate identical regulation here. A given term in the same statute could take on distinct characters from association with distinct statutory objects calling for different ways of implementation. The court accorded substantial judicial deference to an agency’s longstanding, reasonable, and differing interpretations of the statutory term at issue. It held that the Fourth Circuit’s reading of the PSD regulations in an effort to conform them to their NSPS counterparts on “modification” was not a permissible reading of their terms. The PSD regulations clearly did not define a “major modification” in terms of an increase in the hourly emissions rate. Therefore, the court’s reading amounted to the invalidation of the PSD regulations which had to comport with the Clean Air Act’s limits on judicial review of EPA regulations for validity. The case was vacated and remanded. Texto completo 05-848.ZO.html Referencias Cites Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc. Jurisprudencia | Nacional - corte superior | Estados Unidos de América | Jun 25, 1984 Palabra clave: Contaminación del aire (fuentes fijas), Economiá y medio ambiente Fuente: UNEP, InforMEA