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What are air quality designations?

April 26, 2017air quality designations

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What are air quality designations?

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Geographic areas are designated by the United States Environmental Protection Agency (U.S. EPA) as “attainment areas” or “nonattainment areas”. An attainment area complies with the National Ambient Air Quality Standards ( NAAQS). for a given pollutant. A nonattainment area does not meet the standards for a given pollutant. In addition, nonattainment areas are classified according to the severity of their pollution problem. There are five classes of nonattainment areas for ozone (smog) ranging from marginal (relatively easy to clean up quickly) to extreme. (which will take a lot of expensive work and a long time to clean up). U.S. EPA has designated Las Vegas as a serious nonattainment area for carbon monoxide, and PM10 (inhalable particles 10 microns or less in diameter).