air quality standards


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air quality standards

A general term for the standards of air quality (concentration of pollutants for an average length of time) set by the Environmental Protection Agency or equivalent body in a particular country. In the US, the standards are based on the concentration of 5 ambient air pollutants (SO2, particulate matter, carbon monoxide, ozone, and NO2).
References in periodicals archive ?
Court of Appeals for the District of Columbia upheld EPA's decision to tighten air quality standards for fine particulate matter in National Association of Manufacturers (NAM) v.
The Carl Moyer Memorial Air Quality Standards Attainment Program was first implemented in 1998 and has replaced or upgraded 48,000 diesel engines resulting in a reduction of 146,000 tons of ozone forming compounds and 6,000 tons of particulate matter or soot.
These new air quality standards are proof of our commitment to environmental protection, today and for generations to come.
The Clean Air Act requires EPA to review air quality standards every five years and update those standards as needed.
The difficulties of setting ambient air quality standards for
Updated federal air quality standards implemented in 2008 have also helped reduce ozone alert days in California and elsewhere.
Thies said NCBA is "urging EPA to reject this faulty study and refrain from setting an air quality standard for dust lower than naturally occurring levels, and effectively halting economic growth and development.
Current data from TCEQ's air quality monitoring network show Central Texas meets national air quality standards for all six criteria pollutants.
Ozone levels measured in Lancaster violated the stiff state air quality standard 22 days, the fewest bad air days since 1999 and the third best year since measurements began in 1976, records show.
EPA noted that the comment period for proposed revisions to the National Ambient Air Quality Standards (NAAQS) for PM will still close on April 17.
The Supreme Court finally cleared the way to proceed with the new air quality standards in February 2001, and within a few months, EPA analysts had readied an aggressive "straw proposal"--the plan they would initially bring to the bargaining table where Clear Skies would be hammered out--for reducing power plant pollution.
The Environmental Protection Agency is conducting a study in an attempt to establish indoor air quality standards.

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