Clean Air Act Amendments (1990)

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US legislation that builds on the Clean Air Act Amendments (1977) in an attempt to reduce smog and air pollution, particularly by dealing with problems such as acid rain and ozone depletion. The law allows the Environment Protection Agency to set limits on how much of a particular pollutant can be in the air anywhere in the USA, but it allows individual states to have stronger pollution controls, and requires them to develop state implementation plans which detail how they aim to achieve the national targets.

Subjects: Environmental Science.

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