Missouri Petroleum Storage Rules Get EPA Nod
Published Date: 7/23/2026
Rule
Summary
The EPA just gave a thumbs-up to Missouri’s updated rules for controlling pollution from storing, loading, and transferring petroleum liquids in the St. Louis area. These changes make the rules clearer, easier to follow, and match similar ones in Kansas City, cutting red tape and speeding up approvals. Starting August 24, 2026, affected businesses can expect smoother processes without extra fees or delays.
Analyzed Economic Effects
4 provisions identified: 3 benefits, 1 costs, 0 mixed.
No Permit Needed for Vapor System Changes
If you operate a gasoline dispensing facility in the St. Louis area, the Missouri rule change removes the permitting requirement for modifications to vapor recovery systems and creates a streamlined process. This change is part of the approved revision to 10 CSR 10-5.220 and becomes effective August 24, 2026; the preamble says affected businesses can expect smoother processes without extra fees or delays.
Tank-Size Rule Applicability Updated
Missouri revised the tank size threshold that determines which petroleum storage tanks are covered by 10 CSR 10-5.220 in the St. Louis area. The revision is part of the SIP approval effective August 24, 2026 and changes which facilities must follow the rule.
Clearer Testing and Reporting Rules
The approved revisions to 10 CSR 10-5.220 clarify rule language on testing and reporting and remove unnecessarily restrictive or duplicative language for petroleum liquid handling in St. Louis. These clarifications are effective August 24, 2026 and are intended to make compliance easier for regulated facilities.
State Rule Now Federally Enforceable
The EPA incorporated Missouri's 10 CSR 10-5.220 into the Federally-approved SIP and states the rule is federally enforceable under sections 110 and 113 of the Clean Air Act as of August 24, 2026. That means federal authorities can enforce the state rule from that date forward.
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