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Geographic Area (Select One)
Air Pollutant (Select One)
Show City Locations In Map
Please note: Exposure maps of some pollutants are not very informative
because the exposure concentration is dominated by background.
See the ambient concentration map for
the best information about the variation in concentrations of
these pollutants:
- carbon tetrachloride
- ethylene dibromide
- ethylene dichloride
- PCBs
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These maps
illustrate the modeled human exposure to air toxics by county in
1996. Map colors indicate national ranges of inhalation exposure
concentration. A county's shading color shows how its exposure concentration
compares with all other counties in the nation. Note that
if a majority of counties have the same pollutant exposure concentration
(e.g., coke oven emissions), most of the map will look white.
The exposure concentration value displayed in maps is the county
median.
Exposure concentration is expressed in micrograms of pollutant per
cubic meter of air (µg/m3).
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