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The primary legislation governing air quality in India is the Air (Prevention and Control of Pollution) Act, 1981. [ 26 ] Additionally, the government introduced the National Clean Air Programme (NCAP) in 2019, aiming to reduce particulate matter (PM) pollution by 20-30% in at least 102 cities by 2024.
US counties that are designated "nonattainment" for the Clean Air Act's NAAQS, as of September 30, 2017. The U.S. National Ambient Air Quality Standards (NAAQS, pronounced / ˈ n æ k s / naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. [1]
Ambient air quality criteria, or standards, are concentrations of pollutants in the air, and typically refer to outdoor air.The criteria are specified for a variety of reasons including for the protection of human health, buildings, crops, vegetation, ecosystems, as well as for planning and other purposes.
The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by the National Ambient Air Quality Standards (NAAQS) that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness.
The Air Quality Act of 1967 (Pub. L. 90–148) authorized planning grants to state air pollution control agencies, permitted the creation of interstate air pollution control agencies, and required HEW to define air quality regions and develop technical documentation that would allow states to set ambient air quality and pollution control ...
Starting 10 June 1968, the Japanese Government passed the Air Pollution Control Act which regulated all sources of air pollutants. As a result of the 1968 law, dispute resolutions were passed under the 1970 Air Pollution Dispute Resolution Act . As a result of the 1970 law, in 1973 the first installment of four sets of new emissions standards ...
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 ]
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.