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President George H. W. Bush signs the Clean Air Act Amendments of 1990 at the White House, November 15, 1990. Another set of major amendments to the Clean Air Act occurred in 1990 (1990 CAAA) (104 Stat. 2468, Pub. L. 101–549). The 1990 CAAA substantially increased the authority and responsibility of the federal government.
For each listed source category, EPA indicates whether the sources are considered to be major sources or area sources. The 1990 Clean Air Act Amendments direct EPA to set standards for all major sources of air toxics, and for some area sources that are of particular concern. EPA is required to review all source category regulations every eight ...
[9] The Clean Air Act requires periodic review of NAAQS, and new scientific data published after 1977 made it necessary to revise the standards previously established in the 1977 Lead AQCD document. An Addendum to the document was published in 1986 and then again as a Supplement to the 1986 AQCD/Addendum in 1990.
1990 – Clean Air Act Amendments of 1990. Set new automobile emissions standards, low-sulfur gas, required Best Available Control Technology (BACT) for toxins, reduction in CFCs. 1990 – Oil Pollution Act of 1990; 1991 – Intermodal Surface Transportation Efficiency Act (ISTEA) 1992 – Residential Lead-Based Paint Hazard Reduction Act
Section 202(a)(1) of the Clean Air Act requires the Administrator of the EPA to establish standards "applicable to the emission of any air pollutant from…new motor vehicles or new motor vehicle engines, which in [her] judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare" (emphasis added). [3]
New Source Performance Standards (NSPS) are pollution control standards issued by the United States Environmental Protection Agency (EPA). The term is used in the Clean Air Act Extension of 1970 (CAA) to refer to air pollution emission standards, and in the Clean Water Act (CWA) referring to standards for water pollution discharges of industrial wastewater to surface waters.
The criteria pollutants and their respective limits are defined in the National Ambient Air Quality Standards, which were a part of the Clean Air Act Amendments of 1970 (P.L. 91-604, Sec. 109). The EPA has regulated each criteria pollutant through two different standards, primary and secondary. [ 2 ]
In 2017, the biggest pollutants included carbon dioxide, nitrogen oxide, hydrocarbons, lead, and particulate matter according to Theilmann in the U.S. Clean Air Act. [5] These pollutants harm the environment as well as the citizens living in these areas. The pollutants contribute to climate change and can result in acid rain. Citizens living in ...