Hydrogen halide and halogen HAP
Hydrogen halide and halogen HAP means hydrogen chloride, chlorine, and hydrogen fluoride.
Source
40 CFR § 63.8105
Scoping language
For an affected source complying with the requirements in subpart SS of this part 63, the terms used in this subpart and in subpart SS of this part 63 have the meaning given them in 63.981, except as specified in 63.8000(d)(5)(ii) and (7), 63.8010(c)(2), 63.8025(b), and paragraph (g) of this section.