Air Plan Approval; Missouri; Definitions and Common Reference Tables

<RULE> ENVIRONMENTAL PROTECTION AGENCY <CFR>40 CFR Parts 52, 62, and 70</CFR> <DEPDOC>[EPA-R07-OAR-2025-0289; FRL-12821-02-R7]</DEPDOC> <SUBJECT>Air Plan Approval; Missouri; Definitions and Common Reference Tables</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Environmental Protection Agency (EPA). <HD SOURCE="HED">ACTION:</HD> Final rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> 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). </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> This final rule is effective on October 27, 2025. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> 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 <E T="03">https://www.regulations.gov</E> website. Although listed in the index, some information is not publicly available, <E T="03">i.e.,</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 <E T="03">https://www.regulations.gov</E> or please contact the person identified in the <E T="02">FOR FURTHER INFORMATION CONTACT</E> section for additional information. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> 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: <E T="03">brown.steven@epa.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> Throughout this document “we,” “us,” and “our” refer to EPA. <HD SOURCE="HD1">Table of Contents</HD> <EXTRACT> <FP SOURCE="FP-2">I. What is being addressed in this document?</FP> <FP SOURCE="FP-2">II. Have the requirements for approval of a SIP revision been met?</FP> <FP SOURCE="FP-2">III. The EPA's Response to Comments</FP> <FP SOURCE="FP-2">IV. What action is the EPA taking?</FP> <FP SOURCE="FP-2">V. Incorporation by Reference</FP> <FP SOURCE="FP-2">VI. Statutory and Executive Order Reviews</FP> </EXTRACT> <HD SOURCE="HD1">I. What is being addressed in this document?</HD> 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. <HD SOURCE="HD1">II. Have the requirements for approval of a SIP revision been met?</HD> 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. <HD SOURCE="HD1">III. The EPA's Response to Comments</HD> The public comment period on the EPA's proposed rule opened June 27, 2025, the date of its publication in the <E T="04">Federal Register</E> and closed on July 28, 2025 (90 FR 27496). During this period, the EPA received two non-substantive comments from two separate anonymous commenters. <HD SOURCE="HD1">IV. What action is the EPA taking?</HD> 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. <HD SOURCE="HD1">V. Incorporation by Reference</HD> 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 <E T="03">https://www.regulations.gov</E> and at the EPA Region 7 Office (please contact the person identified in the <E T="02">FOR FURTHER INFORMATION CONTACT</E> 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. <SU>1</SU> <FTREF/> <FTNT> <SU>1</SU>  62 FR 27968, May 22, 1997. </FTNT> <HD SOURCE="HD1">VI. Statutory and Executive Order Reviews</HD> 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: • 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); • 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 <E T="03">et seq.</E> ); • 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 <E T="03">et seq.</E> ); • 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); • 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). 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 r ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 15k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━