Chemical:
1,3-Butadiene, Acetaldehyde, Arsenic (inorganic arsenic compounds), Benzene, Benzo[a]pyrene, Benz[a]anthracene, Cadmium, Chloroform, Chromium (hexavalent compounds), Chrysene, Formaldehyde (gas), Mercury, Nickel, Toluene, Vinyl trichloride (1,1,2-Trichloroethane)