The U.S. Supreme Court has ruled that even minor modifications of plant emissions require EPA approval.

Question

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The U.S. Supreme Court has held that modifications to a plant, even if they are minor and do not increase the maximum capacity of the plant, can still require a permit if they result in an increase in emissions, emphasizing the need for EPA (Environmental Protection Agency) approval for such changes. This is based on interpretations of the Clean Air Act and its amendments, which aim to prevent any significant deterioration of air quality from new or modified sources of air pollution.

The US Supreme Court Has Ruled That Even Minor Modifications of of Plant