The Clean Air Act is a United States federal law designed to control air pollution on a national level.[1] It is one of the United States' first and most influential modern environmental laws, and one of the most comprehensive air quality laws in the world.[2][3] As with many other major U.S. federal environmental statutes, it is administered by the U.S. Environmental Protection Agency (EPA), in coordination with state, local, and tribal governments.[4] Its implementing regulations are codified at 40 C.F.R. (10 h 51 m, 6 mayo 1990 año – 11 h 14 m, 16 agos 1990 año)
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fecha:
10 h 51 m, 6 mayo 1990 año
11 h 14 m, 16 agos 1990 año
~ 3 months and 12 days