[Federal Register Volume 89, Number 215 (Wednesday, November 6, 2024)]
[Rules and Regulations]
[Pages 87955-87960]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-25604]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R03-OAR-2024-0302; FRL-12064-02-R3]


Air Plan Approval; Pennsylvania; Adoption of Federal 
Implementation Plan Reasonably Available Control Technology 
Requirements for Keystone, Conemaugh, Homer City, and Montour 
Generating Facilities for the 1997 and 2008 Ozone National Ambient Air 
Quality Standards

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is approving a 
portion of the state implementation plan (SIP) revisions submitted by 
the Commonwealth of Pennsylvania. The revisions being approved adopt 
nitrogen oxides (NO<INF>X</INF>) emission limits and requirements for 
the coal-fired electric generating units (EGUs) equipped with selective 
catalytic reduction (SCR) at the Keystone, Conemaugh, Homer City, and 
Montour facilities. The NO<INF>X</INF> limits address reasonably 
available control technology (RACT) requirements for these EGUs for the 
1997 and 2008 ozone national ambient air quality standards (NAAQS) and 
address the deficiencies identified in EPA's August 16, 2022, 
disapproval of an earlier SIP submission. This action is being taken 
under the Clean Air Act (CAA).

DATES: This final rule is effective on December 6, 2024.

ADDRESSES: EPA has established a docket for this action under Docket ID 
Number EPA-R03-OAR-2024-0302. All documents in the docket are listed on 
the www.regulations.gov website. Although listed in the index, some 
information is not publicly available, e.g., confidential business 
information (CBI) or other information whose disclosure is restricted 
by statute. Certain other material, such as copyrighted material, is 
not placed on the internet and will be publicly available only in hard 
copy form. Publicly available docket materials are available through 
www.regulations.gov, or please contact the person identified in the FOR 
FURTHER INFORMATION CONTACT section for additional availability 
information.

FOR FURTHER INFORMATION CONTACT: Sean Silverman, Planning & 
Implementation Branch (3AD30), Air & Radiation Division, U.S. 
Environmental Protection Agency, Region III, 1600 John F Kennedy 
Boulevard, Philadelphia, Pennsylvania 19103. The telephone number is 
(215) 814-5511. Mr. Silverman can also be reached via electronic mail 
at <a href="/cdn-cgi/l/email-protection#3b4852574d5e49565a5515485e5a557b5e4b5a155c544d"><span class="__cf_email__" data-cfemail="f083999c8695829d919ede8395919eb0958091de979f86">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

I. Background

    On August 16, 2022, (87 FR 50257) EPA took final action to 
disapprove portions of a Pennsylvania SIP revision submitted May 16, 
2016 that, among other things, established NO<INF>X</INF> emission 
limitations for the coal-fired EGUs equipped with SCR at the Keystone, 
Conemaugh, Homer City, and Montour facilities, to satisfy certain RACT 
obligations for the 1997 and 2008 ozone NAAQS.\1\ EPA's August 16, 
2022, final disapproval started a sanctions clock under CAA section 179 
and 40 CFR 52.31. The two-to-one new source emissions offset sanction 
took effect on March 15, 2024 (18 months following the September 15, 
2022, effective date of the August 16, 2022, disapproval, 87 FR 50257). 
Highway funding sanctions would have taken effect September 15, 2024, 
unless the state submitted, and EPA approved, SIP revisions correcting 
the deficiencies identified in the August 16, 2022, disapproval action.
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    \1\ A more detailed and complete summary of the history of the 
RACT limits for these EGUs can be found in the Notice of Proposed 
Rulemaking for this final action. 89 FR 56680 (July 10, 2024).
---------------------------------------------------------------------------

    On August 31, 2022, EPA issued a Federal implementation plan (FIP) 
adopting NO<INF>X</INF> RACT limits for these four sources addressing 
these same RACT obligations. 87 FR 53381. Three of the sources subject 
to the FIP filed a challenge to the FIP in the U.S. Third Circuit Court 
of Appeals. Keystone-Conemaugh Projects LLC v. EPA, et al., No. 22-
3026. Following briefing and oral argument, on May 2, 2024, the Third 
Circuit issued a decision upholding the RACT limits and other 
requirements in EPA's August 31, 2022, FIP. The court decided and 
resolved all issues raised by the Petitioners in EPA's favor. Id.
    On April 10, 2024, Pennsylvania Department of Environmental 
Protection (PADEP) submitted two SIP revisions to

[[Page 87956]]

EPA which adopted into the SIP the NO<INF>X</INF> limits and other 
requirements found in EPA's final August 31, 2022, FIP for Keystone, 
Conemaugh, Homer City, and Montour (Montour was submitted separately). 
On July 10, 2024, EPA published a notice of proposed rulemaking (NPRM) 
proposing to approve Pennsylvania's April 10, 2024, SIP revisions (89 
FR 56680). EPA's NPRM also proposed to find that the incorporation of 
title V permits containing the FIP requirements into Pennsylvania's SIP 
addressed the deficiencies identified in EPA's August 16, 2022 (87 FR 
50257), partial disapproval. The reasons for the proposed approval and 
the determination were stated in the proposal for this action and will 
not be restated here. Based on this finding and the proposed approval, 
EPA simultaneously issued an Interim Final Determination (IFD) staying 
the application of the offset sanction and deferring the application of 
the highway sanction triggered by EPA's August 16, 2022 (87 FR 50257) 
disapproval. 89 FR 56666 (July 10, 2024). EPA's proposed action noted 
that it was not taking action at this time on certain RACT limits for 
auxiliary boilers which were included in the SIP revisions, and 
therefore this final action does not address those RACT limits for the 
identified auxiliary boilers.
    The public comment period for the proposed approval and 
determination ended on August 9, 2024. EPA received three comments, 
which can be found in the docket. One of the comments is not relevant 
to this action and will not be addressed. The other two were 
supportive, but one generally supportive comment also contained 
comments which could be considered adverse. Those potentially adverse 
comments are addressed below.

II. Summary of SIP Revision and EPA Analysis

    Pennsylvania's SIP submissions, dated April 9, 2024, and received 
by EPA on April 10, 2024, included four redacted title V permits 
incorporating the FIP requirements for the EGUs equipped with SCR at 
Keystone, Conemaugh, Homer City, and Montour. EPA has reviewed these 
permits and determined that the permits incorporate the same emission 
limits, monitoring, testing, recordkeeping, reporting, work practices 
and other requirements for these EGUs found in EPA's FIP. The permits 
are listed in Table 1 in this document. These submissions and permits 
are part of the docket for this rule making and are available online at 
www.regulations.gov.

 Table 1--List of Title V permits incorporating the Requirements of the August 31, 2022, Federal Implementation
                                                      Plan
----------------------------------------------------------------------------------------------------------------
           Source name             Title V permit No.         County                Permit effective date
----------------------------------------------------------------------------------------------------------------
Conemaugh........................             32-0059  Indiana.............  March 14, 2024.
Homer City.......................            32-00055  Indiana.............  March 14, 2024.
Keystone.........................            03-00027  Armstrong...........  March 14, 2024.
Montour..........................            47-00001  Montour.............  March 14, 2024.
----------------------------------------------------------------------------------------------------------------

    The title V permits in the April 10, 2024, SIP submissions for 
Keystone and Conemaugh also contain case-by-case RACT limits for 
certain gas or oil-fired auxiliary boilers at these facilities. 
However, EPA is not taking action at this time on the case-by-case RACT 
limits in these permits for two auxiliary boilers at Keystone (Source 
IDs 037 and 038) and two at Conemaugh (Source IDs 039 and 041). These 
auxiliary boilers were not subject to the presumptive RACT limit in 25 
Pa. Code 129.97(g)(1)(viii) for which EPA issued a final disapproval in 
August 2022.
    As explained in the proposed action, EPA's assessment regarding the 
approvability of the RACT limits and other requirements for these EGUs 
found in Pennsylvania's SIP submission is substantially the same as the 
justification and analysis in the record EPA created for its FIP. EPA 
provided an in-depth discussion of the methodology and reasoning for 
setting the FIP limits for each of these EGUs in EPA's proposed FIP (87 
FR 31798, May 25, 2022), the associated technical support document 
supporting the proposed FIP, and in responses to comments received on 
the proposed FIP and published with the final FIP action (87 FR 53381, 
August 31, 2022). EPA has put the technical support document for EPA's 
FIP into the docket for this action. The Federal Register documents for 
the proposed and final FIP are available at www.regulations.gov under 
docket number EPA-R03-OAR-2022-0347 and in the Federal Register at the 
citations provided in the prior sentence. EPA is not aware of any 
change in the facts since the FIP was finalized that would alter any of 
the limits or requirements or EPA's analysis supporting the FIP. Other 
specific requirements of Pennsylvania's April 10, 2024, submittal and 
the rationale for EPA's proposed action are explained in the NPRM and 
will not be restated here.

III. EPA's Response to Comments Received

    EPA received three comments on the July 10, 2024, documents. One 
comment is not relevant to this action and will not be addressed. A 
summary of the other two comments and EPA's responses follow. Copies of 
all the comments are in the docket for this rule action.
    Comment 1: The commenter first acknowledges some key historical 
developments concerning the NO<INF>X</INF> RACT requirements for the 
Keystone and Conemaugh EGUs, including PADEP's prior SIP submission of 
May 26, 2022, EPA's proposed disapproval of that SIP submission, 
PADEP's withdrawal of that SIP submission following EPA's proposed 
disapproval, and the May 2, 2024, decision by the Third Circuit Court 
of Appeals upholding the RACT limits and other requirements in EPA's 
August 31, 2022, FIP. The commenter then states that they ``[support] 
the EPA's effort to finalize the SIP as prepared by the PADEP.''
    The commenter then notes that ``the challenges of operating under 
these limits that KEY-CON noted during the rulemaking process for the 
FIP remain.'' The commenter asserts that in order to account for start-
up events where higher NO<INF>X</INF> emissions above the limit are 
unavoidable, the sources must operate at a target NO<INF>X</INF> 
emission rate that is lower than each sources' limit. The commenter 
acknowledges that ``operating in this manner provides a manageable 
balance for maintaining an adequate (but small) margin of compliance 
and limiting excessive aqueous ammonia injection rates that are 
required to achieve lower NO<INF>X</INF> emission rates.'' The comment 
notes that extended periods of excessive ammonia injection can lead to 
fouling of the air preheaters, and that this problem is exacerbated in 
colder weather. As a result, the commenter states that the

[[Page 87957]]

frequency of conducting heater washes, as well as SCR reactor 
maintenance, has increased, and that the limits in the proposed 
rulemaking ``are at the very bounds of our NO<INF>X</INF> emissions 
control capability.''
    Response 1: EPA thanks the commenter for their largely supportive 
comment, and agrees that PADEP's April 10, 2024, SIP revision 
incorporating the NO<INF>X</INF> limits from EPA's FIP should be 
finally approved and incorporated in the Pennsylvania SIP to meet 
certain RACT requirements for these sources for the 1997 and 2008 Ozone 
NAAQS. The commenter's concerns regarding fouling of the air preheaters 
with ammonium bisulfate (ABS) under certain conditions and the need for 
increased maintenance to address this fouling are similar to those 
contained in the commenter's July 11, 2022, comments on EPA's proposed 
FIP. EPA addressed those comments in the final rule adopting the FIP 
limits. See 87 FR 53381, at 53390 and 53391, August 31, 2022. However, 
the commenter now goes on to state that the current limits and other 
requirements provide ``a manageable balance for maintaining an adequate 
(but small) margin of compliance.'' EPA agrees that this balance is 
appropriate in light of the longstanding definition of RACT as ``the 
lowest emission limitation that a particular source is capable of 
meeting by the application of control technology that is reasonably 
available considering technological and economic feasibility.'' \2\ 
Table 2, in this preamble are citations to the specific places in the 
final rule approving the FIP limit where EPA responded to similar 
concerns expressed by the commenter.
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    \2\ Memo, dated December 9, 1976, from Roger Strelow, Assistant 
Administrator for Air and Waste Management, to Regional 
Administrators, ``Guidance for Determining Acceptability of SIP 
Regulations in Non-Attainment Areas,'' p. 2, available at 
www3.epa.gov/ttn/naaqs/aqmguide/collection/cp2/19761209_strelow_ract.pdf and 44 FR 53762 (September 17, 1979) 
(Strelow Memo).
    See also Sierra Club v. EPA, 972 F.3d 290.

           Table 2--Citations to Relevant Portions of the FIP
------------------------------------------------------------------------
                   Topic                         Citation in FIP FRN
------------------------------------------------------------------------
Concerns about Fouling....................  87 FR 53381 at 53390 second
                                             column.
No specific setpoint is required, the 30-   87 FR 53381 at 53390 third
 day average provides flexibility in         column.
 meeting the limit.
The increase in ammonium bisuflate salt     87 FR 53381 at 53395 second
 formation in colder temps.                  column.
EPA used weighted averages and the third    87 FR 53381 at 53396 second
 best to provide flexibility for start-up    column and third column.
 events.
------------------------------------------------------------------------

    In addition to the above concerns, the commenter expresses concern 
that in the future, more restrictive limits might be placed on these 
units in order to meet RACT requirements for the 2015 ozone NAAQS. 
Although Pennsylvania has adopted regulations setting RACT limits for 
certain major sources of VOCs and NO<INF>X</INF> (See 25 Pa. Code 
129.111--129.115) for the 2015 ozone NAAQS, those regulations do not 
set NO<INF>X</INF> limits for coal-fired EGUs equipped with SCR. When 
PADEP develops case-by-case RACT limits for the commenter's sources and 
submits them to EPA for approval as a SIP revision, there will be 
another opportunity for the commenter to share information on whether 
any new but lower NO<INF>X</INF> limits are technologically and 
economically feasible.
    Comment 2: The commenter states:

    I am writing to provide comments on the interim final 
determination to stay and defer sanctions related to the Reasonably 
Available Control Technology (RACT) requirements for the Keystone, 
Conemaugh, Homer City, and Montour generating facilities in 
Pennsylvania under the 1997 and 2008 Ozone National Ambient Air 
Quality Standards (NAAQS). While the intent of deferring sanctions 
might be to allow time for compliance, there are critical aspects 
that need to be carefully considered. It is essential that the 
control measures adopted for these facilities are strict and in line 
with the most current technologies and practices. The stay should 
not compromise the effectiveness of RACT in reducing emissions. 
Adequate and enforceable measures must be established to achieve the 
required air quality improvements and standards. There should be 
procedures and rules such facilities are monitored and held 
accountable for their actions to ensure that facilities are taking 
substantive steps toward compliance. There should be regular reports 
to ensure everything is going smoothly.

    Response 2: EPA agrees that it is essential that control measures 
adopted for these facilities be strict and in line with current 
technologies and practices, so long as those technologies and practices 
meet the definition of RACT. EPA's longstanding definition of RACT is 
``the lowest emission limitation that a particular source is capable of 
meeting by the application of control technology that is reasonably 
available considering technological and economic feasibility.'' \3\ EPA 
also agrees that the RACT limits must be accompanied by enforceable 
measures, appropriate monitoring, recordkeeping, and reporting to 
ensure compliance. EPA believes that the requirements of its FIP, and 
this SIP revision adopting the same FIP requirements, achieve RACT 
levels of control and provide the necessary monitoring, recordkeeping, 
and reporting needed to ensure enforcement of the limits. EPA also 
notes that the RACT limits and other requirements for these sources 
have been enforceable since March 29, 2023, which was the initial 
compliance date for the limits set forth in the FIP issued by EPA on 
September 30, 2022. 87 FR 53381. Regarding the IFD, EPA notes that the 
IFD only stayed the application of the offset sanction and deferred the 
application of the highway funding sanctions. The IFD does not in any 
way impact the RACT requirements the facilities must meet in the FIP.
---------------------------------------------------------------------------

    \3\ Memo, dated December 9, 1976, from Roger Strelow, Assistant 
Administrator for Air and Waste Management, to Regional 
Administrators, ``Guidance for Determining Acceptability of SIP 
Regulations in Non-Attainment Areas,'' p. 2, available at 
www3.epa.gov/ttn/naaqs/aqmguide/collection/cp2/19761209_strelow_ract.pdf and 44 FR53762 (/citation/44-FR-53762), 
footnote 2 (September 17, 1979) (Strelow Memo).
    See also Sierra Club v. EPA, 972 F.3d 290.
---------------------------------------------------------------------------

IV. Final Action

    EPA is approving Pennsylvania's April 10, 2024, SIP revision to the 
Pennsylvania SIP, with the exception of certain RACT limits for 
auxiliary boilers, as set forth in EPA's NPRM. In addition, EPA is 
determining that Pennsylvania's April 10, 2024, SIP revision addressed 
the deficiencies identified in EPA's August 16, 2022 (87 FR 50257) 
partial disapproval. Finalization of this approval permanently stops 
the offset sanctions which took effect on March 15, 2024, and prevents 
the imposition of highways sanctions which could have taken effect on 
September 15, 2024.

[[Page 87958]]

V. Incorporation by Reference

    In this document, EPA is finalizing regulatory text that includes 
incorporation by reference. In accordance with requirements of 1 CFR 
51.5, EPA is finalizing the incorporation by reference of source-
specific RACT determinations and alternative NO<INF>X</INF> emissions 
limits under the 1997 and 2008 8-hour ozone NAAQS for certain major 
sources of NO<INF>X</INF> in Pennsylvania described in section II. of 
this preamble and as set for the below in the amendments to 40 CFR part 
52. EPA has made, and will continue to make, these materials generally 
available through www.regulations.gov and at the EPA Region III Office 
(please contact the person identified in the FOR FURTHER INFORMATION 
CONTACT section of this preamble for more information). Therefore, 
these materials have been approved by EPA for inclusion in the SIP, 
have been incorporated by reference by EPA into that plan, are fully 
federally enforceable under sections 110 and 113 of the CAA as of the 
effective date of the final rule of EPA's approval, and will be 
incorporated by reference in the next update to the SIP compilation.\4\
---------------------------------------------------------------------------

    \4\ 62 FR 27968 (May 22, 1997).
---------------------------------------------------------------------------

VI. Statutory and Executive Order Reviews

A. General Requirements

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, EPA's role is to approve state choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
action merely approves state law as meeting Federal requirements and 
does not impose additional requirements beyond those imposed by state 
law. For that reason, this action:
    <bullet> Is not a significant regulatory action subject to review 
by the Office of Management and Budget under Executive Orders 12866 (58 
FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 2011);
    <bullet> Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
    <bullet> Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
    <bullet> Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
    <bullet> Does not have federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
    <bullet> Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
    <bullet> Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001); and
    <bullet> Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the Clean Air Act;
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where EPA or an Indian tribe has 
demonstrated that a tribe has jurisdiction. In those areas of Indian 
country, the rule does not have tribal implications and will not impose 
substantial direct costs on tribal governments or preempt tribal law as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000).
    Executive Order 12898 (Federal Actions to Address Environmental 
Justice in Minority Populations and Low-Income Populations, 59 FR 7629, 
February 16, 1994) directs Federal agencies to identify and address 
``disproportionately high and adverse human health or environmental 
effects'' of their actions on minority populations and low-income 
populations to the greatest extent practicable and permitted by law. 
EPA defines environmental justice (EJ) as ``the fair treatment and 
meaningful involvement of all people regardless of race, color, 
national origin, or income with respect to the development, 
implementation, and enforcement of environmental laws, regulations, and 
policies.'' EPA further defines the term fair treatment to mean that 
``no group of people should bear a disproportionate burden of 
environmental harms and risks, including those resulting from the 
negative environmental consequences of industrial, governmental, and 
commercial operations or programs and policies.''
    The Pennsylvania Department of Environmental Protection did not 
evaluate environmental justice considerations as part of its SIP 
submittal; the CAA and applicable implementing regulations neither 
prohibit nor require such an evaluation. EPA did not perform an EJ 
analysis and did not consider EJ in this action. Due to the nature of 
the action being taken here, this action is expected to have a neutral 
to positive impact on the air quality of the affected area. 
Consideration of EJ is not required as part of this action, and there 
is no information in the record inconsistent with the stated goal of 
E.O. 12898 of achieving environmental justice for people of color, low-
income populations, and Indigenous peoples.

B. Submission to Congress and the Comptroller General

    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. Section 804, however, exempts from section 801 the 
following types of rules: Rules of particular applicability; rules 
relating to agency management or personnel; and rules of agency 
organization, procedure, or practice that do not substantially affect 
the rights or obligations of non-agency parties. 5 U.S.C. 804(3). 
Because this is a rule of particular applicability, EPA is not required 
to submit a rule report regarding this action under section 801.

C. Petitions for Judicial Review

    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by January 6, 2025. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this action for the purposes of judicial review nor 
does it extend the time within which a petition for judicial review may 
be filed and shall not postpone the effectiveness of such rule or 
action. This action addressing the NO<INF>X</INF> RACT requirements for 
EGUs equipped with SCR at the Keystone, Conemaugh, Homer City and 
Montour facilities for the 1997 and 2008 Ozone NAAQS may not be 
challenged later in proceedings to enforce its requirements. (See 
section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Nitrogen dioxide, Ozone,

[[Page 87959]]

Reporting and recordkeeping requirements.

Adam Ortiz,
Regional Administrator, Region III.

    For the reasons stated in the preamble, the EPA amends 40 CFR part 
52 as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for part 52 continues to read as follows:

    Authority:  42 U.S.C. 7401 et seq.

Subpart NN--Pennsylvania

0
2. Amend Sec.  52.2020:
0
a. In the table in paragraph (d)(1) by
0
i. Removing the entry for ``Pennsylvania Power and Light Co. (PP&L)--
Montour'' and inserting in its place the entry ``Montour LLC/Montour 
SES''; and
0
ii. Removing the entry for ``Pennsylvania Electric Co. (PENELEC)--
Keystone Generating Station'' and inserting in its place the entry 
``Keystone Conemaugh Proj LLC/Keystone Station''; and
0
b. In the table in paragraph (d)(3) by:
0
i. Removing the entry for ``Conemaugh Plant, Genon NE Management Co'' 
Permit No. ``Title V permit 32-00059'' and inserting in its place the 
entry ``Keystone Conemaugh Proj LLC/Conemaugh Station''; and
0
ii. Removing the entry for ``Homer City Generation'' Permit No. ``Plan 
Approvals 32-00055H and 32-00055I'' and inserting in its place the 
entry ``Homer City Gen LP/Center TWP''.
    The revisions read as follows:


Sec.  52.2020  Identification of plan.

* * * * *
    (d) * * *
    (1) * * *

----------------------------------------------------------------------------------------------------------------
                                                                                                    Additional
                                                                                                  explanations/
                                                                     State       EPA approval       Sec.  Sec.
        Name of source         Permit No.          County          effective         date          52.2063 and
                                                                      date                           52.2064
                                                                                                  citations \1\
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Keystone Conemaugh Proj LLC/     32-00027  Armstrong............    3/14/2024  11/6/2024,        NOX RACT
 Keystone Station.                                                              [INSERT FIRST     emission
                                                                                PAGE OF FR        limits and
                                                                                CITATION].        associated
                                                                                                  compliance
                                                                                                  parameters in
                                                                                                  unredacted
                                                                                                  portions of
                                                                                                  the Title V
                                                                                                  permit
                                                                                                  provided to
                                                                                                  EPA on April
                                                                                                  10, 2024.
                                                                                                  Permit name
                                                                                                  updated in
                                                                                                  this table.
                                                                                                  See also
                                                                                                  52.2064(m)(3).
 
                                                  * * * * * * *
Montour LLC/Montour SES......    47-00001  Montour..............    3/14/2024  11/6/2024,        NOX RACT
                                                                                [INSERT FIRST     emission
                                                                                PAGE OF FR        limits and
                                                                                CITATION].        associated
                                                                                                  compliance
                                                                                                  parameters in
                                                                                                  unredacted
                                                                                                  portions of
                                                                                                  the Title V
                                                                                                  permit
                                                                                                  provided to
                                                                                                  EPA on April
                                                                                                  10, 2024.
                                                                                                  Permit name
                                                                                                  updated in
                                                                                                  this table.
                                                                                                  See also
                                                                                                  52.2064(m)(4).
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
    (3) * * *

----------------------------------------------------------------------------------------------------------------
                                                                                                    Additional
                                                                      State       EPA approval     explanation/
       Name of source            Permit No.          County         effective         date        Sec.   52.2063
                                                                       date                          citation
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Keystone Conemaugh Proj LLC/  Title V permit   Indiana...........    3/14/2024  11/6/2024,       NOX RACT
 Conemaugh Station.            32-00059.                                         [INSERT FIRST    emission
                                                                                 PAGE OF FR       limits and
                                                                                 CITATION].       associated
                                                                                                  compliance
                                                                                                  parameters in
                                                                                                  unredacted
                                                                                                  portions of
                                                                                                  the Title V
                                                                                                  permit
                                                                                                  provided to
                                                                                                  EPA on April
                                                                                                  10, 2024.
                                                                                                  Permit name
                                                                                                  updated in
                                                                                                  this table.
                                                                                                  See also
                                                                                                  52.2064(m)(1).
 
                                                  * * * * * * *
Homer City Gen LP/Center TWP  32-00055.......  Indiana...........    3/14/2024  11/6/2024,       NOX RACT
                                                                                 [INSERT FIRST    emission
                                                                                 PAGE OF FR       limits and
                                                                                 CITATION].       associated
                                                                                                  compliance
                                                                                                  parameters in
                                                                                                  unredacted
                                                                                                  portions of
                                                                                                  the Title V
                                                                                                  permit
                                                                                                  provided to
                                                                                                  EPA on April
                                                                                                  10, 2024.
                                                                                                  Permit name
                                                                                                  updated in
                                                                                                  this table.
                                                                                                  See also
                                                                                                  52.2064(m)(2).
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------


[[Page 87960]]

* * * * *

0
3. Amend Sec.  52.2064 by adding paragraph (m) to read as follows:


Sec.  52.2064  EPA-approved Source-Specific Reasonably Available 
Control Technology (RACT) for Volatile Organic Compounds (VOC) and 
Oxides of Nitrogen (NOX).

* * * * *
    (m) Approval of source-specific RACT requirements for 1997 and 2008 
8-hour ozone national ambient air quality standards for the facilities 
listed in this paragraph (m) are incorporated as specified. (Rulemaking 
Docket No. EPA-R03-OAR-2024-0302.)
    (1) Keystone Conemaugh Proj LLC/Conemaugh Station--Incorporating by 
reference Permit No. 32-00059, effective March 14, 2024, as redacted by 
Pennsylvania, excluding the auxiliary boiler limits for all source 
group requirements in section E for G11: alternative RACT II for 
Auxiliary Boilers source IDs 039 and 041. See also Sec.  52.2020(d)(1), 
for prior RACT approval.
    (2) Homer City Gen LP/Center TWP--Incorporating by reference Permit 
No. 32-00055, effective March 14, 2024, as redacted by Pennsylvania. 
See also Sec.  52.2020(d)(1), for prior RACT approval.
    (3) Keystone Conemaugh Proj LLC/Keystone Station--Incorporating by 
reference Permit No. 32-00027, effective March 14, 2024, as redacted by 
Pennsylvania, excluding the auxiliary boiler limits for all source 
group requirements in section E for G11: alternative RACT II for 
Auxiliary Boilers source IDs 037 and 038. See also Sec.  52.2020(d)(1), 
for prior RACT approval.
    (4) Montour LLC/Montour SES--Incorporating by reference Permit No. 
47-00001, effective March 14, 2024, as redacted by Pennsylvania. See 
also Sec.  52.2020(d)(1), for prior RACT approval.

[FR Doc. 2024-25604 Filed 11-5-24; 8:45 am]
BILLING CODE 6560-50-P


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