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The 2023 state budget grounded two efforts to limit air pollution in North Carolina, banning state agencies from setting requirements for the sale or purchase of zero-emission vehicles and from ...
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.
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]
Contamination was first noticed at Fort Bragg, where discolored grass and soil were observed along 11 miles of roadway. [6] On July 31, authorities in Warren County noticed oil alongside North Carolina Highway 58 outside of the town of Warrenton. [5] Of the counties impacted by the dumping of the waste, Warren was the most effected. [7]
The Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), also known as "Superfund", requires that the criteria provided by the Hazard Ranking System (HRS) be used to make a list of national priorities of the known releases or threatened releases of hazardous substances, pollutants, or contaminants in the United States. [2]
The policy framework is different for regional pollutants [2] [48] (e.g. SO 2 and NO x, and also mercury) because the impact of these pollutants may differ by location. The same amount of a regional pollutant can exert a very high impact in some locations and a low impact in other locations, so it matters where the pollutant is released.
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.
In 2002, researchers at the University of Massachusetts Amherst have identified MeadWestvaco as the 57th-largest corporate producer of air pollution in the United States, with roughly 35,000 pounds of toxic chemicals released annually into the air. [33] Major pollutants indicated by the study include sulfuric acid, chlorine dioxide, chlorine ...