Pollutants Measured in the Community Air Screen Program

List of Air Toxics
Chemical	CAS#^a	112(k)^b
1,1,1-Trichloroethane	71-55-6
1,1,2,2-Tetrachloroethane	79-34-5	X
1,1,2-Trichloroethane	79-00-5
1,1-Dichloroethane	75-34-3
1,1-Dichloroethylene	75-35-4
1,2,4-Trichlorobenzene	120-82-1
1,2,4-Trimethylbenzene	95-63-6
1,2-Dibromoethane	106-93-4
1,2-Dichlorobenzene	95-50-1
1,2-Dichloroethane	107-06-2	X
1,2-Dichloropropane	78-87-5	X
1,3,5-Trimethylbenzene	108-67-8
1,3-Butadiene	106-99-0	X
1,3-Dichlorobenzene	541-73-1
1,4-Dichlorobenzene	106-46-7
a-Chlorotoluene (Benzylchloride)	100-44-7
Benzene	71-43-2	X
Bromodichloromethane	75-27-4
Bromomethane	74-83-9
Carbon disulfide	75-15-0
Carbon tetrachloride	56-23-5	X
Chlorobenzene	108-90-7
Chloroethane	75-00-3
Chloroform	67-66-3	X
Chloromethane	74-87-3
cis1,3-Dichloropropene	542-75-6
cis1,2-Dichloroethylene	156-59-2
Dichlorodifluoromethane	75-71-8
Dichlorotetrafluoroethane	76-14-2
Ethylbenzene	100-41-4
Hexachloro-1,3-butadiene	87-68-3
m,p-Xylene	1330-20-7
Methyl tert butyl ether	1634-04-4
Methylene chloride (dichloromethane)	75-09-2	X
o-Xylene	95-47-6
Styrene	100-42-5
Tetrachloroethylene (perchloroethylene)	127-18-4	X
Toluene	108-88-3
trans1,3-Dichloropropene	542-75-6
Trichloroethylene	79-01-6	X
Trichlorofluoromethane	75-69-4
Trichlorotrifluoroethane	76-13-1
Vinyl chloride	75-01-4	X

^a CAS# - chemical abstract number is a unique registry number assigned to each chemical.
^b These are among the 33 priority hazardous air pollutants listed in Section 112(k) of the Clean Air Act. These pollutants are deemed to be most toxic and/or most prevalent in urban areas across the nation.