Table 7-5: Arizona Air Quality Nonattainment Areas for Carbon Monoxide (CO)

Table 7-5: Arizona Air Quality Nonattainment Areas for Carbon Monoxide (CO)

Excel | CSV

County Area Nonattainment in year Redesignation to attainment Classification Part or whole county Population (2000)
Maricopa Phoenix 95 96 97 98 99 00 01 NA Serious Part 3,028,832
Pima Tucson 95 96 97 98 99 00 7/10/00 Not classified Part 512,407

KEY: NA = not applicable.

NOTES: Nonattainment areas do not meet the national primary or secondary ambient air quality standard for the specified pollutant. Nonattainment areas are classified based on design values: Serious = an area with a design value of 16.5 parts per million (ppm) and above; Moderate = an area with a design value of 9.1 up to 16.4 ppm.

SOURCE: U.S. Environmental Protection Agency, Green Book, available at http://www.epa.gov/oar/oaqps/greenbk/anay.html as of Apr. 20, 2002.