United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2026_register executive 2026-04-23 article Proposed Rules D09002ee1e0c7ed25 D09002ee1e0c7eda7 United States Environmental Protection Agency originator org United States Government Agency or Subagency The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) related to the control of emissions during petroleum liquid storage, loading and transfer in the St. Louis area. The revisions to this rule include revising the tank size threshold applicability of the rule, adding incorporations by reference to other state rules, adding definitions specific to the rule, revising unnecessarily restrictive or duplicative language, adding a streamlined process for modifications to vapor recovery systems at gasoline dispensing facilities and thereby eliminating the associated permitting requirement, and clarifying rule language on testing and reporting. The revisions make this provision consistent with a similar rule that is applicable to the Kansas City area and regulates the same type of facilities. These revisions do not interfere with the State's ability to attain or maintain the National Ambient Air Quality Standards (NAAQS). The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA). 91 FR 21751 https://www.govinfo.gov/app/details/FR-2026-04-23/2026-07906 2026-07906 fr23ap26-13 6560-50-P EPA-R07-OAR-2025-3822 FRL-13146-01-R7 https://www.govinfo.gov/app/details/FR-2026-04-23/2026-07906 https://www.govinfo.gov/content/pkg/FR-2026-04-23/html/2026-07906.htm https://www.govinfo.gov/content/pkg/FR-2026-04-23/pdf/2026-07906.pdf 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 3 p. 21751 21753 91 FR 21751 Title 40 Part 52 40 CFR Part 52 Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer; Federal Register Vol. 91, Issue PRORULE 2026-07906 ENVIRONMENTAL PROTECTION AGENCY 2026-05-26 EPA-R07-OAR-2025-3822 FRL-13146-01-R7 6560-50-P 2026-07906 Proposed rule.

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) related to the control of emissions during petroleum liquid storage, loading and transfer in the St. Louis area. The revisions to this rule include revising the tank size threshold applicability of the rule, adding incorporations by reference to other state rules, adding definitions specific to the rule, revising unnecessarily restrictive or duplicative language, adding a streamlined process for modifications to vapor recovery systems at gasoline dispensing facilities and thereby eliminating the associated permitting requirement, and clarifying rule language on testing and reporting. The revisions make this provision consistent with a similar rule that is applicable to the Kansas City area and regulates the same type of facilities. These revisions do not interfere with the State's ability to attain or maintain the National Ambient Air Quality Standards (NAAQS). The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).

Comments must be received on or before May 26, 2026. Steven Brown, Environmental Protection Agency, Region 7 Office, Air Quality Planning Branch, 11201 Renner Boulevard, Lenexa, Kansas 66219; telephone number: (913) 551-7718; 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 Air Quality State Implementation Plans; Approvals and Promulgations Missouri; Control of Emissions during Petroleum Liquid Storage, Loading, and Transfer, brown.steven@epa.gov https://www.epa.gov/dockets/commenting-epa-dockets https://www.regulations.gov Regulations.gov Vol. 91, no. 78 Office of the Federal Register, National Archives and Records Administration 2026-04-23 continuing daily deposited born digital 234 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2026-04-23 P0b002ee1e0c6c404 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr23ap26 https://www.govinfo.gov/app/details/FR-2026-04-23 https://www.govinfo.gov/content/pkg/FR-2026-04-23/pdf/FR-2026-04-23.pdf https://www.govinfo.gov/content/pkg/FR-2026-04-23/xml/FR-2026-04-23.xml fdlp 21713 21936 DGPO 2026-04-23 2026-04-23 FR-2026-04-23 machine generated eng FR FR-2026-04-23 91 78