Rule2025-18568
Air Plan Approval; Missouri; Definitions and Common Reference Tables
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
September 25, 2025
Effective
October 27, 2025
Issuing agencies
Environmental Protection Agency
Abstract
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the State Implementation Plan (SIP) for the State of Missouri related to Definitions and Common Reference Tables used in Missouri rules. EPA has also previously approved this rule as part of the air planning and permitting program. Some of the definitions are associated with those programs, even though many of the definitions pertain only to the SIP. These revisions do not impact the stringency of the SIP or have an adverse effect on air quality. The EPA's final approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).
Full Text
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<title>Federal Register, Volume 90 Issue 184 (Thursday, September 25, 2025)</title>
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[Federal Register Volume 90, Number 184 (Thursday, September 25, 2025)]
[Rules and Regulations]
[Pages 46073-46075]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-18568]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 52, 62, and 70
[EPA-R07-OAR-2025-0289; FRL-12821-02-R7]
Air Plan Approval; Missouri; Definitions and Common Reference
Tables
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
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SUMMARY: The Environmental Protection Agency (EPA) is taking final
action to approve revisions to the State Implementation Plan (SIP) for
the State of Missouri related to Definitions and Common Reference
Tables used in Missouri rules. EPA has also previously approved this
rule as part of the air planning and permitting program. Some of the
definitions are associated with those programs, even though many of the
definitions pertain only to the SIP. These revisions do not impact the
stringency of the SIP or have an adverse effect on air quality. The
EPA's final approval of this rule revision is being done in accordance
with the requirements of the Clean Air Act (CAA).
DATES: This final rule is effective on October 27, 2025.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-R07-OAR-2025-0289. All documents in the docket are
listed on the <a href="https://www.regulations.gov">https://www.regulations.gov</a> website. Although listed in
the index, some information is not publicly available, i.e.,
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 <a href="https://www.regulations.gov">https://www.regulations.gov</a> or please
contact the person identified in the FOR FURTHER INFORMATION CONTACT
section for additional information.
FOR FURTHER INFORMATION CONTACT: Steven Brown Environmental Protection
Agency, Region 7 Office, Air Quality Planning Branch, 11201 Renner
Boulevard, Lenexa, Kansas 66219; telephone number: (913) 551-7718;
email address: <a href="/cdn-cgi/l/email-protection#472535283029693433223122290722372669202831"><span class="__cf_email__" data-cfemail="d4b6a6bba3bafaa7a0b1a2b1ba94b1a4b5fab3bba2">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and
``our'' refer to EPA.
[[Page 46074]]
Table of Contents
I. What is being addressed in this document?
II. Have the requirements for approval of a SIP revision been met?
III. The EPA's Response to Comments
IV. What action is the EPA taking?
V. Incorporation by Reference
VI. Statutory and Executive Order Reviews
I. What is being addressed in this document?
The EPA is approving a SIP revision submitted by the State of
Missouri on July 15, 2024. The revisions are to Title 10, Division 10
of the Code of State Regulations (CSR), 10 CSR 10-6.020 ``Definitions
and Common Reference Tables.'' The purpose of the state regulation is
to provide definitions of key words and expressions used in Missouri
rules for Chapters 1-6 statewide and provides common reference tables.
The amendments to this rule add definitions and remove obsolete
definitions since the last rule, either because the definitions have
been added into an associated applicable rule, the terms are already
defined in statute, or the applicable rule has been rescinded.
Additionally, the list of Hazardous Air Pollutants and Exempt Volatile
Organic Compounds is updated to match the current lists dictated in the
CAA section 112(b)(1) and 40 CFR 51.100(s), respectively. These
revisions meet the requirements of the CAA, do not impact the
stringency of the SIP, and do not adversely impact air quality. The
full text of the rule revisions as well as the EPA's analysis of the
revisions can be found in the technical support document (TSD) included
in this docket.
II. Have the requirements for approval of a SIP revision been met?
The State's submission has met the public notice requirements for
SIP submissions in accordance with 40 CFR 51.102. The submission also
satisfied the completeness criteria of 40 CFR part 51, appendix V. The
State provided public notice on this SIP revision from November 1,
2023, to December 14, 2023, and held a public hearing on December 7,
2023. Missouri received two comments during the comment period on 10
CSR 10-6.020. Missouri responded to all comments and revised the rule
based on public comments prior to submitting to the EPA, as noted in
the State submission included in the docket for this action. As
explained above and in more detail in the technical support document,
which is part of this docket, the revision meets the substantive SIP
requirements of the CAA, including section 110 and implementing
regulations.
III. The EPA's Response to Comments
The public comment period on the EPA's proposed rule opened June
27, 2025, the date of its publication in the Federal Register and
closed on July 28, 2025 (90 FR 27496). During this period, the EPA
received two non-substantive comments from two separate anonymous
commenters.
IV. What action is the EPA taking?
The EPA is taking final action to amend the Missouri SIP by
approving the State's request to revise 10 CSR 10-6.020 ``Definitions
and Common Reference Tables.'' This final action approves these
amendments as part of the SIP, 111(d), and Title V programs even though
many of the definitions only pertain to SIPs.
V. Incorporation by Reference
In this document, the EPA is finalizing regulatory text that
includes incorporation by reference. In accordance with requirements of
1 CFR 51.5, the EPA is finalizing the incorporation by reference of the
Missouri rule 10 CSR 10-6.020 discussed in section I. of this preamble
and as set forth below in the amendments to 40 CFR part 52. The purpose
of this state regulation is to provide definitions of key words and
expressions used in Missouri rules for Chapters 1-6 statewide and
provides common reference tables. The EPA has made, and will continue
to make, these materials generally available through <a href="https://www.regulations.gov">https://www.regulations.gov</a> and at the EPA Region 7 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 the EPA for
inclusion in the State Implementation Plan, have been incorporated by
reference by the EPA into that plan, are fully federally enforceable
under sections 110 and 113 of the CAA as of the effective date of the
final rulemaking of the EPA's approval, and will be incorporated by
reference in the next update to the SIP compilation.\1\
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\1\ 62 FR 27968, May 22, 1997.
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VI. Statutory and Executive Order Reviews
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, the 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 Order 12866 (58
FR 51735, October 4, 1993);
<bullet> Is not subject to Executive Order 14192 (90 FR 9065,
February 6, 2025) because SIP actions are exempt from review under
Executive Order 12866;
<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 subject to Executive Order 13045 (62 FR 19885,
April 23, 1997) because it approves a state program;
<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 CAA.
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).
This action is subject to the Congressional Review Act (CRA), and
the EPA will submit a rule report to each House of the Congress and to
the Comptroller General of the United States. This action is not a
``major rule'' as defined by 5 U.S.C. 804(2).
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 November 24, 2025. Filing a petition for
reconsideration by the Administrator of this final rule does not affect
the finality of this action for the
[[Page 46075]]
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 may not be challenged
later in proceedings to enforce its requirements (see section
307(b)(2)).
List of Subjects
40 CFR Part 52
Environmental protection, Air pollution control, Carbon monoxide,
Incorporation by reference, Intergovernmental relations, Lead, Nitrogen
dioxide, Ozone, Particulate matter, Reporting and recordkeeping
requirements, Sulfur oxides, Volatile organic compounds.
40 CFR Part 62
Environmental protection, Administrative practice and procedure,
Air pollution control, Intergovernmental relations, Reporting and
recordkeeping requirements.
40 CFR Part 70
Environmental protection, Administrative practice and procedure,
Air pollution control, Intergovernmental relations, Operating permits,
Reporting and recordkeeping requirements.
Dated: September 9, 2025.
James Macy,
Regional Administrator, Region 7.
For the reasons stated in the preamble, the EPA amends 40 CFR parts
52, 62, and 70 as set forth below:
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 AA--Missouri
0
2. In Sec. 52.1320, the table in paragraph (c) is amended by revising
the entry ``10-6.020'' to read as follows:
Sec. 52.1320 Identification of plan.
* * * * *
(c) * * *
EPA-Approved Missouri Regulations
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State
Missouri citation Title effective EPA approval date Explanation
date
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Missouri Department of Natural Resources
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* * * * * * *
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Chapter 6--Air Quality Standards, Definitions, Sampling and Reference Methods, and Air Pollution Control
Regulations for the State of Missouri
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* * * * * * *
10-6.020.................... Definitions and 5/30/2024 9/25/2025, 90 FR .......................
Common Reference [insert Federal
Tables. Register page where
the document begins].
* * * * * * *
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* * * * *
PART 62--APPROVAL AND PROMULGATION OF STATE PLANS FOR DESIGNATED
FACILITIES AND POLLUTANTS
0
3. The authority citation for part 62 continues to read as follows:
Authority: 42 U.S.C. 7401 et seq.
Subpart AA--Missouri
0
4. Section 62.6350 is amended by revising paragraph (b)(6) to read as
follows:
Sec. 62.6350 Identification of plan.
* * * * *
(b) * * *
(6) A revision to Missouri's 111(d) plan to incorporate state
regulation 10 CSR 10-6.020 Definitions and Common Reference Tables was
state effective May 20, 2024. The effective date of the amended plan is
November 24, 2025.
* * * * *
PART 70--STATE OPERATING PERMIT PROGRAMS
0
5. The authority citation for part 70 continues to read as follows:
Authority: 42 U.S.C. 7401, et seq.
0
6. Appendix A to part 70 is amended by revising paragraph (cc) under
``Missouri'' to read as follows:
Appendix A to Part 70--Approval Status of State and Local Operating
Permits Programs
* * * * *
Missouri
* * * * *
(cc) The Missouri Department of Natural Resources submitted
revisions to Missouri rule 10 CSR 10-6.020, ``Definitions and Common
Reference Tables'' on July 15, 2024. The state effective date is May
20, 2024. This revision is effective November 24, 2025.
* * * * *
[FR Doc. 2025-18568 Filed 9-24-25; 8:45 am]
BILLING CODE 6560-50-P
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</html>Indexed from Federal Register on September 25, 2025.
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