BTEX
BTEX means benzene, toluene, ethyl benzene, and xylene.
Source
40 CFR § 63.1271
Scoping language
All terms used in this subpart shall have the meaning given to them in the Clean Air Act, subpart A of this part (General Provisions), and in this section. If the same term is defined in subpart A and in this section, it shall have the meaning given in this section for purposes of this subpart.