Current through Register Vol. 48, No. 38, September 20, 2024
Except as otherwise indicated in this Subpart, the owner or
operator of an EGU must comply with the monitoring, recordkeeping, and
reporting requirements as provided in this Section, Sections
225.250
through
225.290
of this Subpart B, and Sections 1.14 through 1.18 of Appendix B to this Part.
If the EGU utilizes a common stack with units that are not EGUs and the owner
or operator of the EGU does not conduct emissions monitoring in the duct to the
common stack from each EGU, the owner or operator of the EGU must conduct
emissions monitoring in accordance with Section 1.16(b)(2) of Appendix B to
this Part and this Section, including monitoring in the duct to the common
stack from each unit that is not an EGU, unless the owner or operator of the
EGU counts the combined emissions measured at the common stack as the mass
emissions of mercury for the EGUs for recordkeeping and compliance
purposes.
a) Requirements for
installation, certification, and data accounting. The owner or operator of each
EGU must:
1) Install all monitoring systems
required pursuant to this Section and Sections
225.250
through
225.290
for monitoring mercury mass emissions (including all systems required to
monitor mercury concentration, stack gas moisture content, stack gas flow rate,
and CO2 or O2 concentration, as
applicable, in accordance with Sections
1.15
and 1.16 of Appendix B to this Part).
2) Successfully complete all certification
tests required pursuant to Section
225.250
and meet all other requirements of this Section, Sections
225.250
through 225.290, and Sections 1.14 through 1.18 of Appendix B to this Part
applicable to the monitoring systems required under subsection (a)(1) of this
Section.
3) Record, report, and
assure the quality of the data from the monitoring systems required under
subsection (a)(1) of this Section.
4) If the owner or operator elects to use the
low mass emissions excepted monitoring methodology for an EGU that emits no
more than 464 ounces (29 pounds) of mercury per year pursuant to Section
1.15(b)
of Appendix B to this Part, it must perform emissions testing in accordance
with Section
1.15(c)
of Appendix B to this Part to demonstrate that the EGU is eligible to use this
excepted emissions monitoring methodology, as well as comply with all other
applicable requirements of Section
1.15(b)
through (f) of Appendix B to this Part. Also,
the owner or operator must submit a copy of any information required to be
submitted to the USEPA pursuant to these provisions to the Agency. The initial
emissions testing to demonstrate eligibility of an EGU for the low mass
emissions excepted methodology must be conducted by the applicable of the
following dates:
A) If the EGU has commenced
commercial operation before July 1, 2008, at least by July 1, 2009, or 45 days
prior to relying on the low mass emissions excepted methodology, whichever date
is later.
B) If the EGU has
commenced commercial operation on or after July 1, 2008, at least 45 days prior
to the applicable date specified pursuant to subsection (b)(2) of this Section
or 45 days prior to relying on the low mass emissions excepted methodology,
whichever date is later.
b) Emissions Monitoring Deadlines. The owner
or operator must meet the emissions monitoring system certification and other
emissions monitoring requirements of subsections (a)(1) and (a)(2) of this
Section on or before the applicable of the following dates. The owner or
operator must record, report, and quality-assure the data from the emissions
monitoring systems required under subsection (a)(1) of this Section on and
after the applicable of the following dates:
1) For the owner or operator of an EGU that
commences commercial operation before July 1, 2008, by July 1, 2009, except
that an EGU in an MPS Group for which an SO2 scrubber or
fabric filter is being installed to be in operation by December 31, 2009, as
described in Section
225.233(c)(1)(A),
shall have a date of January 1, 2010.
2) For the owner or operator of an EGU that
commences commercial operation on or after July 1, 2008, by 90 unit operating
days or 180 calendar days, whichever occurs first, after the date on which the
EGU commences commercial operation.
3) For the owner or operator of an EGU for
which construction of a new stack or flue or installation of add-on mercury
emission controls, a flue gas desulfurization system, a selective catalytic
reduction system, a fabric filter, or a compact hybrid particulate collector
system is completed after the applicable deadline pursuant to subsection (b)(1)
or (b)(2) of this Section, by 90 unit operating days or 180 calendar days,
whichever occurs first, after the date on which emissions first exit to the
atmosphere through the new stack or flue, add-on mercury emission controls,
flue gas desulfurization system, selective catalytic reduction system, fabric
filter, or compact hybrid particulate collector system.
4) For an owner or operator of an EGU that
originally elected to demonstrate compliance pursuant to the emissions testing
requirements in Section
225.239,
by the first day of the calendar quarter following the last emissions test
demonstrating compliance with Section 225.239.
c) The owner or operator of an EGU that does
not meet the applicable emissions monitoring date set forth in subsection (b)
of this Section for any emissions monitoring system required pursuant to
subsection (a)(1) of this Section must begin periodic emissions testing in
accordance with Section 225.239.
d)
Prohibitions.
1) No owner or operator of an
EGU may use any alternative emissions monitoring system, alternative reference
method for measuring emissions, or other alternative to the emissions
monitoring and measurement requirements of this Section and Sections
225.250
through 225.290, unless such alternative is submitted to the Agency in writing
and approved in writing by the Manager of the Bureau of Air's Compliance
Section, or his or her designee.
2)
No owner or operator of an EGU may operate its EGU so as to discharge, or allow
to be discharged, mercury emissions to the atmosphere without accounting for
such emissions in accordance with the applicable provisions of this Section,
Sections
225.250
through 225.290, and Sections 1.14 through 1.18 of Appendix B to this Part,
unless demonstrating compliance pursuant to Section 225.239, as
applicable.
3) No owner or operator
of an EGU may disrupt the CEMS (or excepted monitoring system), any portion
thereof, or any other approved emission monitoring method, and thereby avoid
monitoring and recording mercury mass emissions discharged into the atmosphere,
except for periods of recertification or periods when calibration, quality
assurance testing, or maintenance is performed in accordance with the
applicable provisions of this Section, Sections
225.250
through 225.290, and Sections 1.14 through 1.18 of Appendix B to this
Part.
4) No owner or operator of an
EGU may retire or permanently discontinue use of the CEMS (or excepted
monitoring system) or any component thereof, or any other approved monitoring
system pursuant to this Subpart B, except under any one of the following
circumstances:
A) The owner or operator is
monitoring emissions from the EGU with another certified monitoring system that
has been approved, in accordance with the applicable provisions of this
Section, Sections
225.250
through
225.290
of this Subpart B, and Sections 1.14 through 1.18 of Appendix B to this Part,
by the Agency for use at that EGU and that provides emission data for the same
pollutant or parameter as the retired or discontinued monitoring system;
or
B) The owner or operator submits
notification of the date of certification testing of a replacement monitoring
system for the retired or discontinued monitoring system in accordance with
Section
225.250(a)(3)(A).
C) The owner or operator is demonstrating
compliance pursuant to the applicable subsections of Section 225.239.
e) Long-term Cold
Storage.
The owner or operator of an EGU that is in long-term cold
storage is subject to the provisions of
40 CFR 75.4 and
40 CFR 75.64,
incorporated by reference in Section
225.140,
relating to monitoring, recordkeeping, and reporting for units in long-term
cold storage.
