Current through Register Vol. 48, No. 38, September 20, 2024
a) The provisions
of Sections
219.431 through
219.436 of this
Subpart shall apply to every owner or operator of any chemical manufacturing
process unit that manufactures, as a primary product, one or more of the
chemicals listed in Appendix A of this Part and that chemical manufacturing
process unit causes or allows any reactor or distillation unit, either
individually or in tandem, to discharge one or more process vent streams either
directly to the atmosphere or to a recovery system.
b) Notwithstanding subsection (a) of this
Section, the control requirements set forth within Section
219.432 of
this Subpart shall not apply to the following:
1) Any process vent stream with a total
resource effectiveness (TRE) index value greater than 1.0. However, such
process vent stream remains subject to the performance testing requirements
contained in Section
219.433
of this Subpart and the reporting and recordkeeping requirements contained in
Section
219.435
of this Subpart;
2) Any reactor or
distillation unit that is designed and operated as a batch operation;
3) Any reactor or distillation unit that is
part of a polymer manufacturing operation;
4) Any reactor or distillation unit that is
part of the chemical manufacturing process unit with a total design capacity of
less than 1 gigagram (1,100 tons) per year for all chemicals produced, as a
primary product, within that process unit. However, such operations remain
subject to the reporting and recordkeeping requirements contained in Section
219.435(d)
of this Subpart;
5) Any vent stream
with a flow rate less than 0.0085 scm/min or a total VOM concentration, less
methane and ethane, of less than 500 ppmv as measured by Method 18, or a
concentration of VOM of less than 250 ppmv as measured by Method 25A. However,
such operations remain subject to the performance testing requirement listed in
Section
219.433
of this Subpart, as well as the reporting and recordkeeping requirements
contained in Section
219.435
of this Subpart; or
6) Any reactor
or distillation unit included within an Early Reduction Program, as specified
in 40 CFR 63, and published in 57 Fed. Reg. 61970 (December 29, 1992),
evidenced by a timely enforceable commitment approved by USEPA.
