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

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

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County Area Nonattainment in year Redesignation to attainment Classification Part or whole county Population (2000)
Adams Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Part 356,944
Arapahoe Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Part 483,770
Boulder Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Part 207,807
Boulder Longmont 95 96 97 98 99 11/23/99 Moderate <= 12.7ppm Part 33,615
Denver Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Whole 554,636
Douglas Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Part 145,517
El Paso Colorado Springs 95 96 97 98 99 10/25/99 Moderate <= 12.7ppm Part 449,211
Jefferson Denver-Boulder 95 96 97 98 99 00 01 1/14/02 Serious Part 507,766
Larimer Fort Collins 95 96 97 98 99 00 01 NA Moderate <= 12.7ppm Part 143,226
Teller Colorado Springs 95 96 97 98 99 10/25/99 Moderate <= 12.7ppm Part 13,188
Weld Greeley 95 96 97 98 5/10/99 Not classified Part 98,827
Weld Longmont 95 96 97 98 99 11/23/99 Moderate <= 12.7ppm Part 35,681

KEY: NA = not applicable; ppm = parts per million.

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 ppm and above; Mo

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