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This was the first time the EPA reviewed the environmental impacts separate from the health impacts for this group of criteria air pollutants. [18] Also, in 2010, the EPA decided to ensure compliance by strengthening monitoring requirements, calling for increased numbers of monitoring systems near large urban areas and major roadways.
EPA that GHGs are air pollutants covered by the Clean Air Act. The EPA may regulate GHGs if they are determined to be a danger to human health. Supreme Court Case: May 2007 President George W. Bush orders EPA to use its authority under the Clean Air Act to regulate GHGs from mobile sources, working in coordination with several other federal ...
The 1970 CAA amendments required EPA to determine which air pollutants posed the greatest threat to public health and welfare and promulgate NAAQS and air quality criteria for them. The health-based standards were called "primary" NAAQS, while standards set to protect public welfare other than health (e.g., agricultural values) were called ...
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.
Since the EPA first started regulating clean air in the 1970s, emissions of the most common air pollutants have dropped by almost 80%. But around Houston, there's still a long way to go. Each year ...
The six criteria pollutants in particular are tracked due to their known harmful effects on human health and the environment. [1] An area with outdoor air exceeding the limit for a given pollutant is considered a non-attainment area for that pollutant. An area may be a non-attainment area for one pollutant and an "attainment area" for others.
The AQI is based on the five "criteria" pollutants regulated under the Clean Air Act: ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide. The EPA has established National Ambient Air Quality Standards (NAAQS) for each of these pollutants in order to protect public health.
Gunasekara has since become the EPA's chief of staff. The Obama rule led to what electric utilities say was an $18 billion cleanup of mercury and other toxins from the smokestacks of coal-fired ...