[Federal Register Volume 90, Number 122 (Friday, June 27, 2025)]
[Proposed Rules]
[Pages 27496-27499]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-11821]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52, 62 and 70

[EPA-R07-OAR-2025-0289; FRL-12821-01-R7]


Air Plan Approval; Missouri; Definitions and Common Reference 
Tables

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve revisions to the Missouri State Implementation Plan (SIP) 
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 proposed approval of 
this rule revision is being done in accordance with the requirements of 
the Clean Air Act (CAA).

DATES: Comments must be received on or before July 28, 2025.

ADDRESSES: You may send comments, identified by Docket ID No. EPA-R07-
OAR-2025-0289 to https://

[[Page 27497]]

www.regulations.gov. Follow the online instructions for submitting 
comments.
    Instructions: All submissions received must include the Docket ID 
No. for this rulemaking. Comments received will be posted without 
change to https://www.regulations.gov, including any personal 
information provided. For detailed instructions on sending comments and 
additional information on the rulemaking process, see the ``Written 
Comments'' heading of the SUPPLEMENTARY INFORMATION section of this 
document.

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: [email protected]

SUPPLEMENTARY INFORMATION:  Throughout this document ``we,'' ``us,'' 
and ``our'' refer to the EPA.

Table of Contents

I. Written Comments
II. What is being addressed in this document?
III. Have the requirements for approval of a SIP revision been met?
IV. What action is the EPA taking?
V. Incorporation by Reference
VI. Statutory and Executive Order Reviews

I. Written Comments

    Submit your comments, identified by Docket ID No. EPA-R07-OAR-2025-
0289, at https://www.regulations.gov. Once submitted, comments cannot 
be edited or removed from Regulations.gov. The EPA may publish any 
comment received to its public docket. Do not submit electronically any 
information you consider to be Confidential Business Information (CBI) 
or other information whose disclosure is restricted by statute. 
Multimedia submissions (audio, video, etc.) must be accompanied by a 
written comment. The written comment is considered the official comment 
and should include discussion of all points you wish to make. The EPA 
will generally not consider comments or comment contents located 
outside of the primary submission (i.e. on the web, cloud, or other 
file sharing system). For additional submission methods, the full EPA 
public comment policy, information about CBI or multimedia submissions, 
and general guidance on making effective comments, please visit https://www.epa.gov/dockets/commenting-epa-dockets.

II. What is being addressed in this document?

    The EPA is proposing to approve 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 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 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. EPA proposes to find that 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 EPA's analysis of the revisions can be found in 
the technical support document (TSD) and in the state submittal 
included in this docket.

III. Have the requirements for approval of a SIP revision been met?

    The State 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. The state of Missouri received two comments during the public 
comment period on 10 CSR 10-6.020. Missouri responded to both comments 
and revised the rule based on public comments prior to submitting to 
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.

IV. What action is the EPA taking?

    The EPA is proposing to amend the Missouri SIP by approving the 
State's request to revise 10 CSR 10-6.020 ``Definitions and Common 
Reference Tables.'' EPA's proposed 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. We are processing this as a proposed 
action because we are soliciting comments on this proposed action. 
Final rulemaking will occur after consideration of any comments.

V. Incorporation by Reference

    In this document, the EPA is proposing to include regulatory text 
in an EPA final rule that includes incorporation by reference. In 
accordance with requirements of 1 CFR 51.5, the EPA is proposing to 
finalize the incorporation by reference of the Missouri rule 10 CSR 10-
6.020 discussed in section II. of this preamble and as set forth below 
in the proposed 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 https://www.regulations.gov 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).

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, 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:
     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);
     Is not subject to Executive Order 14192 (90 FR 9065, 
February 6, 2025) because SIP actions are exempt from review under 
Executive Order 12866:
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     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.);
     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);

[[Page 27498]]

     Does not have federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not subject to Executive Order 13045 (62 FR 19885, 
April 23, 1997) because it approves a state program;
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001); and
     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).

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: June 13, 2025.
James Macy,
Regional Administrator, Region 7.
    For the reasons stated in the preamble, the EPA proposes to amend 
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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                                                  * * * * * * *
    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  [Date of publication   Some definitions do
                            Common Reference                    of the final rule in   pertain to Title V,
                            Tables.                             the Federal            111(d) and asbestos
                                                                Register], 90 FR       program and are approved
                                                                [Federal Register      in the SIP. Therefore,
                                                                page where the         EPA has also approved
                                                                document begins of     this rule as part of the
                                                                the final rule].       Title V program, and
                                                                                       111(d) even though many
                                                                                       of the definitions
                                                                                       pertain only to the SIP.
 
                                                  * * * * * * *
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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 
[date 60 days after date of publication of the final rule in the 
Federal Register].
* * * * *

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

* * * * *

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 [date 60 days after date

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of publication of the final rule in the Federal Register].
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[FR Doc. 2025-11821 Filed 6-26-25; 8:45 am]
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