Photochemical Assessment Monitoring Station

Photochemical Assessment Monitoring Stations are ambient air monitoring sites mandated by the 1990 Clean Air Act amendments. Placed in areas of high ozone, they monitor volatile organic compounds, nitrogen oxides, ozone and meteorological parameters. The data is used by the Environmental Protection Agency to understand the causes of ozone pollution and monitor improvement.

Compounds monitored

AIRS CODEParameter Name
43207Freon 113
43208Freon 114
432181,3-Butadiene
43801Chloromethane aka Methyl chloride
43802Methylene chloride
43804Carbon tetrachloride
43811Trichlorofluoromethane (Freon-11)
43812Chloroethane
438131,1-Dichloroethane
438141,1,1-Trichloroethane
438151,2-Dichloroethane
43817Perchloroethylene
438181,1,2,2-Tetrachloroethane
43819Bromomethane
438201,1,2-Trichloroethane
43823Dichlorodifluoromethane (Freon-12)
43824Trichloroethylene
438261,1-Dichloroethylene
438291,2-Dichloropropane
43830trans-1,3-Dichloropropylene
43831cis-1,3-Dichloropropylene
43839cis-1,2-Dichloroethene
438431,2-Dibromoethane
43844Hexachlorobutadiene
43860Vinyl chloride
45109m-Xylene and p-Xylene
45203Ethylbenzene
45202Toluene
45201Benzene
45204o-Xylene
452071,3,5-Trimethylbenzene
452081,2,4-Trimethylbenzene
45213p-Ethyltoluene
45220Styrene
45801Chlorobenzene
458051,2-Dichlorobenzene
458061,3-Dichlorobenzene
458071,4-Dichlorobenzene
45809Benzyl chloride
458101,2,4-Trichlorobenzene
43502Formaldehyde
43503Acetaldehyde
43504Propionaldehyde
43505Acrolein
43551Acetone

External links

* [http://www.epa.gov/oar/oaqps/pams/ Enhanced Ozone Monitoring (PAMS)]


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