Table 7-5: Tennessee Air Quality Nonattainment Areas for Carbon Monoxide (CO),,,,,,
County,Area,Nonattainment in year,Redesignation to attainment,Classification,Part or whole county,Population (2000)
Shelby ,Memphis,  92 93 94  ,9/26/1994,  Moderate <= 12.7ppm  ,Whole,"897,472"
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; 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.",,,,,,
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