Journal of the Air & Waste Management Association (1995)
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J Air Waste Manag Assoc · Jan 2009
The impact of background ozone on compliance with revised National Ambient Air Quality Standards.
The National Ambient Air Quality Standard (NAAQS) for ground-level ozone, previously set as an 8-hr average of 0.08 parts per million (ppm), has been revised by the U. S. Environmental Protection Agency (EPA). ⋯ Additionally, the highest observed background concentrations coincided with maximum photochemical generation at ground level. On the basis of the magnitude and variability of background ozone, a more stringent 8-hr ozone standard will be difficult for local or regional regulatory agencies to meet. A clear understanding of the impacts of background ozone will be required to make and meet new State Implementation Plans (SIPs).