Current through Register Vol. 48, No. 38, September 20, 2024
a) Control
Technology Requirements for Mercury.
1) For
each coal-fired EGU in a CPS group other than an EGU that is addressed by
subsection (b) of this Section, the owner or operator of the EGU must install,
if not already installed, and properly operate and maintain, by the dates set
forth in subsection (a)(2) of this Section, ACI equipment complying with
subsections (g), (h), (i), (j), and (k) of this Section, as
applicable.
2) By the following
dates, for the EGUs listed in subsections (a)(2)(A) and (B), which include hot
and cold side ESPs, the owner or operator must install, if not already
installed, and begin operating ACI equipment or the Agency must be given
written notice that the EGU will be shut down on or before the following dates:
A) Fisk 19, Crawford 7, Crawford 8, Waukegan
7, and Waukegan 8 on or before July 1, 2008; and
B) Powerton 5, Powerton 6, Will County 3,
Will County 4, Joliet 6, Joliet 7, and Joliet 8 on or before July 1,
2009.
b)
Notwithstanding subsection (a) of this Section:
1) The following EGUs are not required to
install ACI equipment because they will be permanently shut down, as addressed
by Section
225.297,
by the date specified:
A) EGUs that are
required to permanently shut down:
i) On or
before December 31, 2007, Waukegan 6; and
ii) On or before December 31, 2010, Will
County 1 and Will County 2.
B) Any other specified EGU that is
permanently shut down by December 31, 2010; and
2) On and after the date an EGU permanently
ceases combusting coal, it is not required to install, operate, or maintain ACI
equipment.
c) Beginning
on January 1, 2015, and continuing thereafter, and measured on a rolling
12-month basis (the initial period is January 1, 2015, through December 31,
2015, and, then, for every 12-month period thereafter), each specified EGU that
has not permanently ceased combusting coal, except Will County 3, shall achieve
one of the following emissions standards:
1)
An emissions standard of 0.0080 lbs mercury/GWh gross electrical output;
or
2) A minimum 90 percent
reduction of input mercury.
d) On and after April 16, 2015, Will County 3
must not combust coal.
e)
Compliance with Emission Standards
1) At any
time prior to the dates required for compliance in subsections (c) and (d) of
this Section, the owner or operator of a specified EGU, upon notice to the
Agency, may elect to comply with the emissions standards of subsection (c) of
this Section measured on either:
A) a rolling
12-month basis; or
B) a quarterly
calendar basis pursuant to the emissions testing requirements in Section
225.239(a)(4),
(c), (d), (e), (f), (g), (h), (i), and (j) of
this Subpart until June 30, 2012.
2) Once an EGU is subject to the mercury
emissions standards of subsection (c) of this Section, it shall not be subject
to the requirements of subsections (g), (h), (i), (j) and (k) of this
Section;
3) On and after the date
an EGU permanently ceases combusting coal, it shall not be subject to the
requirements of subsections (g), (h), (i), (j) and (k) of this
Section.
f) Compliance
with the mercury emissions standards or reduction requirement of this Section
must be calculated in accordance with Section
225.230(a)
or (b), or Section
225.232
until December 31, 2013.
g) For
each EGU for which injection of halogenated activated carbon is required by
subsection (a)(1) of this Section, the owner or operator of the EGU must inject
halogenated activated carbon in an optimum manner.
1) Except as provided in subsection (h) of
this Section, optimum manner is defined as all of the following:
A) The use of an injection system for
effective absorption of mercury, considering the configuration of the EGU and
its ductwork;
B) The injection of
halogenated activated carbon manufactured by Alstom, Norit, or Sorbent
Technologies, Calgon Carbon's FLUEPAC CF Plus, or Calgon Carbon's FLUEPAC MC
Plus, or the injection of any other halogenated activated carbon or sorbent
that the owner or operator of the EGU has demonstrated to have similar or
better effectiveness for control of mercury emissions; and
C) The injection of sorbent at the following
minimum rates, as applicable:
i) For an EGU
firing subbituminous coal, 5.0 lbs per million actual cubic feet or, for any
cyclone-fired EGU that will install a scrubber and baghouse by December 31,
2012, and which already meets an emission rate of 0.020 lb mercury/GWh gross
electrical output or at least 75 percent reduction of input mercury, 2.5 lbs
per million actual cubic feet;
ii)
For an EGU firing bituminous coal, 10.0 lbs per million actual cubic feet or,
for any cyclone-fired EGU that will install a scrubber and baghouse by December
31, 2012, and which already meets an emission rate of 0.020 lb mercury/GWh
gross electrical output or at least 75 percent reduction of input mercury, 5.0
lbs per million actual cubic feet;
iii) For an EGU firing a blend of
subbituminous and bituminous coal, a rate that is the weighted average of the
rates specified in subsections (g)(1)(C)(i) and (ii) based on the blend of coal
being fired; or
iv) A rate or rates
set lower by the Agency, in writing, than the rate specified in any of
subsection (g)(1)(C)(i), (ii), or (iii) of this Section on a unit-specific
basis, provided that the owner or operator of the EGU has demonstrated that
such rate or rates are needed so that carbon injection will not increase
particulate matter emissions or opacity so as to threaten noncompliance with
applicable requirements for particulate matter or opacity.
2) For purposes of subsection
(g)(1)(C) of this Section, the flue gas flow rate shall be the gas flow rate in
the stack for all units except for those equipped with activated carbon
injection prior to a hot-side electrostatic precipitator; for units equipped
with activated carbon injection prior to a hot-side electrostatic precipitator,
the flue gas flow rate shall be the gas flow rate at the inlet to the hot-side
electrostatic precipitator, which shall be determined as the stack flow rate
adjusted through the use of Charles' Law for the differences in gas
temperatures in the stack and at the inlet to the electrostatic precipitator
(Vesp = Vstack x
Tesp/Tstack, where V = gas flow
rate in acf and T = gas temperature in Kelvin or Rankine).
h) The owner or operator of an EGU that seeks
to operate an EGU with an activated carbon injection rate or rates that are set
on a unit-specific basis pursuant to subsection (g)(1)(C)(iv) of this Section
must submit an application to the Agency proposing such rate or rates, and must
meet the requirements of subsections (h)(1) and (h)(2) of this Section, subject
to the limitations of subsections (h)(3) and (h)(4) of this Section:
1) The application must be submitted as an
application for a new or revised federally enforceable operation permit for the
EGU, and it must include a summary of relevant mercury emissions data for the
EGU, the unit-specific injection rate or rates that are proposed, and detailed
information to support the proposed injection rate or rates;
2) This application must be submitted no
later than the date that activated carbon must first be injected. For example,
the owner or operator of an EGU that must inject activated carbon pursuant to
subsection (a)(1) of this Section must apply for unit-specific injection rate
or rates by July 1, 2008. Thereafter, the owner or operator may supplement its
application;
3) Any decision of the
Agency denying a permit or granting a permit with conditions that set a lower
injection rate or rates may be appealed to the Board pursuant to Section 39 of
the Act; and
4) The owner or
operator of an EGU may operate at the injection rate or rates proposed in its
application until a final decision is made on the application including a final
decision on any appeal to the Board.
i) During any evaluation of the effectiveness
of a listed sorbent, alternative sorbent, or other technique to control mercury
emissions, the owner or operator of an EGU need not comply with the
requirements of subsection (g) of this Section for any system needed to carry
out the evaluation, as further provided as follows:
1) The owner or operator of the EGU must
conduct the evaluation in accordance with a formal evaluation program submitted
to the Agency at least 30 days prior to commencement of the
evaluation;
2) The duration and
scope of the evaluation may not exceed the duration and scope reasonably needed
to complete the desired evaluation of the alternative control techniques, as
initially addressed by the owner or operator in a support document submitted
with the evaluation program;
3) The
owner or operator of the EGU must submit a report to the Agency no later than
30 days after the conclusion of the evaluation that describes the evaluation
conducted and which provides the results of the evaluation; and
4) If the evaluation of alternative control
techniques shows less effective control of mercury emissions from the EGU than
was achieved with the principal control techniques, the owner or operator of
the EGU must resume use of the principal control techniques. If the evaluation
of the alternative control technique shows comparable effectiveness to the
principal control technique, the owner or operator of the EGU may either
continue to use the alternative control technique in a manner that is at least
as effective as the principal control technique or it may resume use of the
principal control technique. If the evaluation of the alternative control
technique shows more effective control of mercury emissions than the control
technique, the owner or operator of the EGU must continue to use the
alternative control technique in a manner that is more effective than the
principal control technique, so long as it continues to be subject to this
Section.
j) In addition
to complying with the applicable recordkeeping and monitoring requirements in
Sections
225.240
through
225.290,
the owner or operator of an EGU that elects to comply with this Subpart B by
means of Sections
225.291
through
225.299
must also comply with the following additional requirements:
1) For the first 36 months that injection of
sorbent is required, it must maintain records of the usage of sorbent, the flue
gas flow rate from the EGU (and, if the unit is equipped with activated carbon
injection prior to a hot-side electrostatic precipitator, flue gas temperature
at the inlet of the hot-side electrostatic precipitator and in the stack), and
the sorbent feed rate, in pounds per million actual cubic feet of flue gas, on
a weekly average;
2) After the
first 36 months that injection of sorbent is required, it must monitor
activated sorbent feed rate to the EGU, gas flow rate in the stack, and, if the
unit is equipped with activated carbon injection prior to a hot-side
electrostatic precipitator, flue gas temperature at the inlet of the hot-side
electrostatic precipitator and in the stack. It must automatically record this
data and the sorbent carbon feed rate, in pounds per million actual cubic feet
of flue gas, on an hourly average; and
3) If a blend of bituminous and subbituminous
coal is fired in the EGU, it must keep records of the amount of each type of
coal burned and the required injection rate for injection of activated carbon
on a weekly basis.
k) In
addition to complying with the applicable reporting requirements in Sections
225.240
through 225.290, the owner or operator of an EGU that elects to comply with
Section
225.230(a)
by means of the CPS must also submit quarterly reports for the recordkeeping
and monitoring conducted pursuant to subsection (j) of this Section.
l) Until June 30, 2012, as an alternative to
the CEMS (or excepted monitoring system) monitoring, recordkeeping, and
reporting requirements in Sections
225.240
through 225.290, the owner or operator of an EGU may elect to comply with the
emissions testing, monitoring, recordkeeping, and reporting requirements in
Section
225.239(c),
(d), (e), (f)(1) and (2), (h)(2), (i)(3) and
(4), and (j)(1).
m) Notwithstanding any other provision in
this Subpart, the requirements in Sections
225.240
through
225.290
of this Subpart, and any other mercury-related monitoring, recordkeeping,
notice, analysis, certification, and reporting requirements set forth in this
Subpart, including in this CPS, will not apply to a specified EGU on and after
the date the EGU permanently ceases combusting coal.
