June 2009
List of 188 Hazardous Air Pollutants
Manganese (Coarse Particulate)
Hexamethylene-1,6-diisocyanate
4,4-Methylene bis(2-chloroaniline)
Ethylene imine (Aziridine)
Hexachlorocyclopentadiene
Ethyl carbamate (Urethane)
Radionuclides (including radon)
Dimethyl carbamoyl chloride
2,3,7,8-Tetrachlorodibenzo-p-dioxin
Chromium (Coarse Particulate)
Polychlorinated biphenyls
Bis(2-Ethylhexyl)Phthalate
Chloromethyl methyl ether
Methylene diphenyl diisocyanate
4,6-Dinitro-2-Methylphenol
Methyl iodide (Iodomethane)
Nickel (Coarse Particulate)
1,3-Dichloropropene(Total)
1,2-Dibromo-3-Chloropropane
1,1,2,2-Tetrachloroethane
Abundance of
data: > 20 monitoring sites with sufficient data to create a valid annual
average between 2003-2005, up to 434 sites
Little data: < 20 monitoring sites
with sufficient data to create a valid annual average between 2003-2005,
between 1-17 sites
No Data: No valid annual averages
between 2003-2005
From: https://www.epa.gov/ttn/atw/188polls.html