[Federal Register Volume 89, Number 190 (Tuesday, October 1, 2024)]
[Rules and Regulations]
[Pages 79752-79756]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-22386]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R03-OAR-2023-0300; FRL-11403-02-R3]


Air Plan Approval; Pennsylvania; Oil and Natural Gas Control 
Measures for 2008 and 2015 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 state 
implementation plan (SIP) revision submitted by the Commonwealth of 
Pennsylvania. The revision establishes and requires reasonably 
available control technology (RACT) requirements for the 2008 and 2015 
ozone national ambient air quality standards (NAAQS) for each category 
of volatile organic compound (VOC) sources in Pennsylvania covered by 
the EPA's 2016 Control Techniques Guidelines (CTG) for the oil and gas 
industry. EPA is also approving Allegheny County, Pennsylvania's SIP 
revision, which incorporates by reference the above Pennsylvania 
regulations for the 2016 CTG for oil and gas into the Allegheny County 
SIP with minor changes to reference Allegheny County's existing 
regulations. This action is being taken under the Clean Air Act (CAA).

DATES: This final rule is effective on October 31, 2024.

ADDRESSES: EPA has established a docket for this action under Docket ID 
Number EPA-R03-OAR-2023-0300. 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: Michael O'Shea, 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) 814-2064. Dr. O'Shea can also be reached via electronic mail at 
<a href="/cdn-cgi/l/email-protection#224d514a47430c4f4b414a43474e624752430c454d54"><span class="__cf_email__" data-cfemail="741b071c11155a191d171c151118341104155a131b02">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION: On December 12, 2022, the Pennsylvania 
Department of Environmental Protection (PADEP) submitted a revision to 
its SIP establishing RACT requirements for the 2008 and 2015 ozone 
NAAQS to control VOC emissions from sources covered by EPA's 2016 CTG 
for the oil and gas industry. On September 8, 2023, PADEP submitted, on 
behalf of Allegheny County Health Department (ACHD), a revision to the 
Allegheny County SIP (Allegheny County SIP submission/submittal) 
incorporating by reference (IBR) the aforementioned Pennsylvania 
regulations.

I. Background

    On June 28, 2024 (89 FR 53932), EPA published a notice of proposed 
rulemaking (NPRM) for the Commonwealth of Pennsylvania and Allegheny 
County. In the NPRM, EPA proposed approval of Pennsylvania's SIP 
submittal and ACHD's SIP submittal. The formal SIP revisions were 
submitted by Pennsylvania on December 12, 2022 and by PADEP on behalf 
of ACHD on September 8, 2023.\1\ The Pennsylvania submittal establishes 
RACT requirements for the 2008 and 2015 ozone NAAQS for each category 
of VOC sources in Pennsylvania covered by EPA's October 27, 2016 
``Final Control Techniques Guidelines for the Oil and Natural Gas 
Industry'' (EPA's 2016 Oil and Gas CTG) (81 FR 74798). The Allegheny 
County, Pennsylvania submittal addresses the same CTG by incorporating 
the Pennsylvania regulations into the Allegheny County SIP with minor 
changes to reference Allegheny County's existing regulations. These SIP 
revisions were submitted to meet the requirement in CAA section 
182(b)(2)(A) and (B) that states with ozone nonattainment areas 
classified as Moderate or above must revise their SIPs to include 
provisions to implement RACT for each category of VOC sources covered 
by a CTG document. CAA section 184(b)(1)(B) also extends this RACT 
obligation to all areas of states within the Ozone Transport Region 
(OTR). The entire state of Pennsylvania is within the OTR (See CAA 
section 184(a)), and has one ozone nonattainment area classified as 
moderate or above.\2\ A more complete discussion of the purpose and 
history of these SIP revisions can be found in EPA's NPRM.
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    \1\ The PADEP and ACHD SIP submittals are located in the docket 
for this final rule and can be found under Docket ID Number EPA-R03-
OAR-2023-0300 at www.regulations.gov.
    \2\ The Pennsylvania portion of the Philadelphia-Wilmington-
Atlantic City, PA-NJ-MD-DE area is classified as Serious 
nonattainment for the 2015 ozone NAAQS (See 89 FR 61025 (July 30, 
2024)).
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II. Summary of the SIP Revisions and EPA's Analysis

    Pennsylvania's and Allegheny County's SIP submissions included two 
separate sets of nearly identical regulations for two types of oil and 
natural gas sources as defined by Pennsylvania and Allegheny County: 
``conventional'' oil and gas sources, and ``unconventional'' oil and 
gas sources. EPA's 2016 Oil and Gas CTG does not distinguish between 
the two types of sources. Despite being separate, both regulations 
(Regulation #7-544, entitled ``Control of VOC Emissions from 
Unconventional Oil and Natural Gas Sources,'' and Regulation #7-580, 
entitled ``Control of VOC Emissions from Conventional Oil and Natural 
Gas

[[Page 79753]]

Sources,'') \3\ are nearly identical and have no technical 
differences.\4\ ACHD is incorporating by reference the requirements of 
regulations 7-544 and 7-580 into Allegheny County's regulations.\5\
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    \3\ The NPRM incorrectly identified Regulation #7-544 as 
Conventional well regulations and Regulation #7-580 as 
Unconventional regulations.
    \4\ Both final regulations can be found in the Pennsylvania 
Bulletin at 52 Pa. B. 7635, and 52 Pa. B. 7587 (December 10, 2022), 
at www.pacodeandbulletin.gov/Display/pabull?file=/secure/pabulletin/data/vol52/52-50/1925.html&d=reduce (conventional) and 
www.pacodeandbulletin.gov/Display/pabull?file=/secure/pabulletin/data/vol52/52-50/1924.html&d=reduce (unconventional).
    \5\ The ACHD Rules and Regulations in Article XXI, Air Pollution 
Controls, are amended. The SIP revision adds Sec.  2105.87, 
``Control of VOC Emissions from Unconventional and Conventional Oil 
and Natural Gas Industry Sources,'' to Article XXI. Section 2105.87 
IBRs PADEP's final regulations, which are found at 52 Pa.B. 5287 and 
52 Pa.B. 7635.
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    Regulation #7-580 amends 25 Pennsylvania Code (Pa. Code) Chapter 
129 by adding provisions (sections 129.131 through 129.140) imposing 
RACT-level controls for VOC emissions from certain sources within 
``conventional'' oil and natural gas operations, including 
recordkeeping and reporting requirements. Regulation #7-544 amends 25 
Pa. Code Chapters 121 and 129 by adding provisions (sections 129.121 
through 129.130) imposing RACT-level VOC emissions controls for certain 
sources in ``unconventional'' oil and natural gas operations, including 
recordkeeping and reporting requirements. Both sets of regulations 
apply to similar sources of VOC emissions, including pneumatic 
controllers, diaphragm pumps, compressors, fugitive emission 
components, and storage vessels within certain areas.
    EPA reviewed Pennsylvania's and Allegheny County's SIP submissions 
containing regulations establishing RACT requirements for categories of 
sources identified in EPA's 2016 Oil and Gas CTG for both the 2008 and 
2015 Ozone NAAQS, and proposed to approve these submissions as SIP 
revisions in our June 28, 2024 NPRM. A full discussion of EPA's 
rationale for approving these SIP submissions is available in the NPRM 
and also in the EPA's technical support document (TSD) accompanying the 
NPRM, which is in the docket for this action. EPA's analysis included a 
discussion of PADEP's economic feasibility analyses for sources covered 
by the CTG recommendations and of PADEP's comparison of their 
regulations to those adopted by other states and localities. EPA's 
analysis also compared requirements for testing, recordkeeping, and 
reporting of information in PADEP's oil and gas regulations to the 2016 
Oil and Gas CTG's recommendations. Other specific requirements of the 
RACT SIPs and the rationale for EPA's proposed action are explained in 
more detail in the NPRM and the TSD. The NPRM and TSD are available in 
the docket for this rule at www.regulations.gov, Docket ID Number EPA-
R03-OAR-2023-0300.

III. EPA's Response to Comments Received

    EPA received two comments on the proposed rulemaking. One of the 
comments is not relevant to this action and will not be addressed. Our 
response to the relevant comment is below. Both comments are available 
in the docket for this action.
    Comment: One commentor was supportive of the proposed revisions. 
They outlined the impact of air quality on daily life and the impact of 
reducing VOCs. Overall, the commentor supported the action.
    Response: EPA thanks the commentor for this supportive comment.

IV. Final Action

    EPA is approving Pennsylvania's December 12, 2022 SIP submittal and 
Allegheny County's September 8, 2023 SIP submittal as satisfying the 
CAA requirement to implement RACT for each category of VOC sources 
covered by EPA's 2016 Oil and Gas CTG, as required by CAA section 
182(b)(1)(B) for Moderate ozone nonattainment areas, and also for any 
VOC sources covered by the EPA 2016 Oil and Gas CTG for states in the 
Ozone Transport Region, as required by CAA section 184(b)(1)(B), for 
both the 2008 and 2015 ozone NAAQS.
    Specifically, as they appeared in the Pennsylvania Bulletin on 
December 10, 2022 (52 Pa. B. 7635, and 52 Pa. B. 7587), Pennsylvania 
added sections 129.121-130 and amended section 121.1 to support the 
chapter 129 amendments. Additionally, Pennsylvania added sections 
129.131-129.140. Furthermore, ACHD IBRed the regulations found at the 
Pennsylvania Bulletin (52 Pa. B. 7635, and 52 Pa. B. 7587) published on 
December 10, 2022, into Article XXI of its regulations, creating a new 
section, Sec.  2105.87. The SIP revision does not include the last 
sentence of section 2105.87a, which is noted in strikethrough in ACHD's 
submittal.

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 
Pennsylvania's amendments made to 25 Pa. Code Chapter 121 and 129 
(relating to general provisions; and standards for sources), and also 
Allegheny County's incorporation by reference of Pennsylvania's 
amendments, as described in sections II and IV of this preamble. 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.\6\
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    \6\ 62 FR 27968 (May 22, 1997).
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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

[[Page 79754]]

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, 
Feb. 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.''
    PADEP and Allegheny County did not evaluate environmental justice 
considerations as part of its SIP submittals; 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. 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. EPA will submit a report containing this action and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2).

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 December 2, 2024. 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 pertaining to reasonably available control 
technology requirements for the 2008 and 2015 ozone NAAQS related to 
EPA's 2016 oil and gas control technique guidelines 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, Intergovernmental relations, Nitrogen dioxide, Ozone, 
Reporting and recordkeeping requirements, Volatile organic compounds.

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. In Sec.  52.2020:
0
a. The table in paragraph (c)(1) is amended:
0
i. Under ``Chapter 121--General Provisions'' by adding a fifth entry 
for ``Section 121.1'' before the entry ``Section 121.2''; and
0
ii. Under ``Chapter 129--Standards for Sources'' adding the subheading 
``Control of VOC Emissions from Unconventional and Conventional Oil and 
Natural Gas Sources'' and the entries ''Section 129.121'' through 
``Section 129.140'' immediately after the entry for ``Section 
129.107''; and
0
b. The table in paragraph (c)(2) is amended under the heading ``Subpart 
7--Miscellaneous VOC Sources'' by adding the entry ``2105.87'' in 
numerical order.
    The additions read as follows:


Sec.  52.2020  Identification of plan.

* * * * *
    (c) * * *
    (1) * * *

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                                                          State                          Additional explanation/
         State citation             Title/subject    effective date   EPA approval date  Sec.   52.2063 citation
----------------------------------------------------------------------------------------------------------------
                                       Title 25--Environmental Protection
----------------------------------------------------------------------------------------------------------------
                                           Article III--Air Resources
----------------------------------------------------------------------------------------------------------------
 
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                                                  * * * * * * *
                                         Chapter 121--General Provisions
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[[Page 79755]]

 
                                                  * * * * * * *
Section 121.1..................  Definitions.......      12/10/2022  10/1/24, [INSERT    Adds definition for the
                                                                      FEDERAL REGISTER    term ``ppm'' and
                                                                      CITATION].          amends the following
                                                                                          definitions: ``CPMS,''
                                                                                          ``Fugitive
                                                                                          emissions,'' and
                                                                                          ``Responsible
                                                                                          official'' to support
                                                                                          the amendments to
                                                                                          Chapter 129.
 
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                                                  * * * * * * *
                                       Chapter 129--Standards for Sources
----------------------------------------------------------------------------------------------------------------
 
----------------------------------------------------------------------------------------------------------------
                                                  * * * * * * *
            Control of VOC Emissions from Unconventional and Conventional Oil and Natural Gas Sources
----------------------------------------------------------------------------------------------------------------
129.121........................  General provisions        12/10/22  10/1/24, [INSERT    Controlling VOC
                                  and applicability.                  FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.122........................  Definitions,              12/10/22  10/1/24, [INSERT    Controlling VOC
                                  acronyms, and EPA                   FEDERAL REGISTER    emissions from
                                  methods.                            CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.123........................  Storage vessels...        12/10/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.124........................  Natural gas-driven        12/10/22  10/1/24, [INSERT    Controlling VOC
                                  continuous bleed                    FEDERAL REGISTER    emissions from
                                  pneumatic                           CITATION].          unconventional oil and
                                  controllers.                                            natural gas sources.
129.125........................  Natural gas-driven        12/10/22  10/1/24, [INSERT    Controlling VOC
                                  diaphragm pumps.                    FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.126........................  Compressors.......        12/10/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.127........................  Fugitive emissions        12/10/22  10/1/24, [INSERT    Controlling VOC
                                  components.                         FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.128........................  Covers and closed         12/10/22  10/1/24, [INSERT    Controlling VOC
                                  vent systems.                       FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.129........................  Control devices...        12/10/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.130........................  Recordkeeping and         12/10/22  10/1/24, [INSERT    Controlling VOC
                                  reporting.                          FEDERAL REGISTER    emissions from
                                                                      CITATION].          unconventional oil and
                                                                                          natural gas sources.
129.131........................  General provisions         12/2/22  10/1/24, [INSERT    Controlling VOC
                                  and applicability.                  FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.132........................  Definitions,               12/2/22  10/1/24, [INSERT    Controlling VOC
                                  acronyms and EPA                    FEDERAL REGISTER    emissions from
                                  methods.                            CITATION].          conventional oil and
                                                                                          natural gas sources.
129.133........................  Storage vessels...         12/2/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.134........................  Natural gas-driven         12/2/22  10/1/24, [INSERT    Controlling VOC
                                  continuous bleed                    FEDERAL REGISTER    emissions from
                                  pneumatic                           CITATION].          conventional oil and
                                  controllers.                                            natural gas sources.
129.135........................  Natural gas-driven         12/2/22  10/1/24, [INSERT    Controlling VOC
                                  diaphragm pumps.                    FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.136........................  Compressors.......         12/2/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.137........................  Fugitive emissions         12/2/22  10/1/24, [INSERT    Controlling VOC
                                  components.                         FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.138........................  Covers and closed          12/2/22  10/1/24, [INSERT    Controlling VOC
                                  vent systems.                       FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
129.139........................  Control devices...         12/2/22  10/1/24, [INSERT    Controlling VOC
                                                                      FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.

[[Page 79756]]

 
129.140........................  Recordkeeping and          12/2/22  10/1/24, [INSERT    Controlling VOC
                                  reporting.                          FEDERAL REGISTER    emissions from
                                                                      CITATION].          conventional oil and
                                                                                          natural gas sources.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
    (2) * * *

----------------------------------------------------------------------------------------------------------------
                                                          State                          Additional explanation/
   Article XX or XXI citation       Title/subject    effective date   EPA approval date  Sec.   52.2063 citation
----------------------------------------------------------------------------------------------------------------
                                      Subpart 7--Miscellaneous VOC Sources
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
2105.87........................  Control of VOC              2/5/23  10/1/24, [INSERT    Incorporates by
                                  Emissions from                      FEDERAL REGISTER    reference the
                                  Unconventional                      CITATION].          Pennsylvania
                                  and Conventional                                        Department of
                                  Oil and Natural                                         Environmental
                                  Gas Industry                                            Protection regulations
                                  Sources.                                                for ``unconventional''
                                                                                          and ``conventional''
                                                                                          oil and natural gas
                                                                                          sources promulgated at
                                                                                          52 Pa.B. 5287 and 52
                                                                                          Pa.B 7635 (both
                                                                                          published on December
                                                                                          10, 2022). The SIP
                                                                                          revision does not
                                                                                          include the last
                                                                                          sentence of Sec.
                                                                                          2105.87.a, which is
                                                                                          noted in
                                                                                          strikethrough.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
[FR Doc. 2024-22386 Filed 9-30-24; 8:45 am]
BILLING CODE 6560-50-P


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