Sections 108 and 109 of The U.S. Clean Air Act
The EPA established the NAAQS according to Sections 108 and 109 of the U.S. Clean Air Act, which was last amended in 1990. These sections require the EPA “(1) to list widespread air pollutants that reasonably may be expected to endanger public health or welfare; (2) to issue air quality criteria for them that assess the latest available scientific information on nature and effects of ambient exposure to them; (3) to set primary NAAQS to protect human health with adequate margin of safety and to set secondary NAAQS to protect against welfare effects (e.g., effects on vegetation, ecosystems, visibility, climate, manmade materials, etc); and (5) to periodically review and revise, as appropriate, the criteria and NAAQS for a given listed pollutant or class of pollutants."
Read more about this topic: Criteria Air Contaminants
Famous quotes containing the words sections, clean, air and/or act:
“That we can come here today and in the presence of thousands and tens of thousands of the survivors of the gallant army of Northern Virginia and their descendants, establish such an enduring monument by their hospitable welcome and acclaim, is conclusive proof of the uniting of the sections, and a universal confession that all that was done was well done, that the battle had to be fought, that the sections had to be tried, but that in the end, the result has inured to the common benefit of all.”
—William Howard Taft (1857–1930)
“A soul that makes virtue its companion is like an over-flowing well, for it is clean and pellucid, sweet and wholesome, open to all, rich, blameless and indestructible.”
—Epictetus (c. 50–120)
“People who live together naturally catch the looks and air of one another and without having one feature alike, they contract a something in the whole countenance which strikes one as a resemblance.”
—Frances Burney (1752–1840)
“To exist is equivalent to an act of faith, a protest against the truth, an interminable prayer.... As soon as they consent to live, the unbeliever and the man of faith are fundamentally the same, since both have made the only decision that defines a being.”
—E.M. Cioran (b. 1911)