Acid rain, principally caused by high levels of sulfur dioxide and nitrogen oxide in industrial pollutants, has been a concern for several decades. Hachimantai in Iwate Prefecture indicates metallic precipitates have increased two to fivefold from the levels of the s, serving as evidence that pollution from China extends over nearly the entire Japanese archipelago. In addition, over the past half decade, the heavy clouds of seasonal huangsha — called kosa in Japanese and referred to alternatively in English as yellow sand or yellow dust — wafting eastward from the Gobi desert each spring have worsened due to ongoing desertification of the region. No longer just a problem for northern China, they darken the skies over Seoul and Korea and have affected commercial air traffic in western Kyushu.
EPA is currently reviewing the adequacy of the ozone and PM 10 standards. Largely in response to a court decision in favor of environmentalists Sierra Club v.
Ruckelshaus, the amendments included a program for the prevention of significant deterioration PSD of air that was already clean. This program would prevent polluting the air up to the national levels in areas where the air was cleaner than the standards.
In Class I areas, areas with near pristine air quality, no new significant air pollution would be allowed. Class I areas are airsheds over larger national parks and wilderness areas. In Class II areas a moderate degree of air quality deterioration would be allowed.
And finally, in Class III areas, air deterioration up to the national secondary standards would be allowed.
Related to the prevention of significant deterioration is a provision to protect and enhance visibility in national parks and wilderness areas even if the air pollution is not a threat to human health. The impetus of this section of the bill was the growing visibility problem in parks, especially in the Southwest.
Throughout the s efforts to further amend the Clean Air Act were stymied. President Ronald Reagan was opposed to any strengthening of the Act, which he argued would hurt the economy.
In Congress, the controversy over acid rain between members from the Midwest and the Northeast further contributed to the stalemate. Over the next two years, the issues were hammered out between environmentalists and industry and between different regions of the country.
Major amendments to the Clean Air Act were finally passed in the fall of These amendments addressed four major topics: Most of this reduction came from old utility power plants. The law also creates marketable pollution allowances, so that a utility that reduces emissions more than required can sell those pollution rights to another source.
Economists argue that such an approach should become more widespread for all pollution control, to Courtesy of U.
Due to the failure of the toxic air pollutant provisions of the Clean Air Act, new, more stringent provisions were adopted requiring regulations for all major sources of varieties of toxic air pollution within 10 years.
Areas of the country still in nonattainment for criteria pollutants will be given from three to 20 years to meet these standards.
These areas are also required to impose tighter controls to meet these standards. To help these areas and other parts of the country, the act requires stiffer motor vehicle emissions standards and cleaner gasoline.
Finally, three chemical families that contribute to the destruction of the stratospheric ozone layer chlorofluorocarbons [CFCs], hydrochlorofluorocarbons [HCFCs], and methyl chloroform are to be phased out of production and use. The Clean Air Act has met with mixed success.
The national average pollutant levels for the criteria pollutants have decreased. Nevertheless, many localities have not achieved these standards and are in perpetual nonattainment. Not surprisingly, major urban areas are those most frequently in nonattainment. The pollutant for which standards are most often exceeded is ozone, or smog.
A final point of caution concerning evaluating the Clean Air Act:Isn’t it a total hassle to buy an air purifier in China, especially for expats?
Back in places like the USA, when we shop for anything we can luxuriously research using consumer magazines and other review sources, wisely shopping around online and in stores as educated consumers. Air pollution is perceived as a modern-day curse: a by-product of increasing urbanization and industrialization.
It does, however, have a long and evolving history with interesting transitions in line with economic, technological and political change. Some of the things people do cause harm to the earth.
We cause pollution when we make our water, land, and air dirty. In this lesson, you will learn what pollution is, why we have it, and what we. Aug 18, · Coal Burning Causes the Most Air Pollution Deaths in China, Study Finds. By BEIJING — Burning coal has the worst health impact of any source of air pollution in China and caused , Outdoor air pollution case study.
Outdoor air pollution is understood to have a major impact on human health. Monitoring air pollution is the first step to managing air pollution. The following case studies give real life examples of how customers use Aeroqual’s instruments to monitor outdoor air pollution.
Improving Urban Air Quality in China: Beijing Case Study. options for urban air pollution control. Beijing's case provides hope that the challenges associated with improving air quality can be.