NO2 Ozone Lead Any NAAQS

PM-10 = particulate matter less than 10 ^m in diameter (dust and soot).

FIG. 5.1.3 People residing in counties that fail to meet NAAQS. Numbers are for 1991 based on 1990 U.S. county population data. Sensitivity to air pollutants can vary from individual to individual. (Reprinted from Council on Environmental Quality 1993.)

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