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Introduction to Toxic Air Pollutants
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1. What are toxic air pollutants?
Toxic air pollutants, also known as Hazardous
Air Pollutants (HAPs), are those pollutants
that are known or suspected to cause cancer
or other serious health effects, such as reproductive
effects or birth defects, or adverse environmental
effects. EPA is working with state, local, and
tribal governments to reduce air toxics releases
of 188
pollutants to the environment. Examples
of toxic air pollutants include benzene, which
is found in gasoline; perchlorethlyene, which
is emitted from  some dry cleaning facilities;
and methylene chloride, which is used as a solvent
and paint stripper by a number of industries.
Examples of other listed air toxics include
dioxin, asbestos, toluene, and metals such as
cadmium, mercury, chromium and lead compounds.
Any person may petition the US EPA to
modify the list
of HAPs by adding or deleting one or more substances.
Health and Environmental Risk Assessment Resources
Search the following sites for more information on the HAP listed above.
US
EPA HAPS Health Effects Notebook
US
EPA Integrated Risk Information System
University
of Vermont Safety Resources
NIOSH
Pocket Guide to Chemical Hazards
WISER -
the Wireless Information System for Emergency Responders
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