Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Gasoline Standards

Extension of the Reformulated Gasoline Program to the St. Louis, Missouri, Moderate Ozone Non-attainment Area

Extension of the Reformulated Gasoline Program to the St. Louis, Missouri, Moderate Ozone Non-attainment Area
Basic Information
Legal Authorities
  • 42 U.S.C. §7546
Federal Register Citations
  • 64 FR 10366
Code of Federal Regulations Citations
  • 40 CFR Part 80

On this page:

  • Rule Summary
  • Additional Resources

Rule Summary

The Clean Air Act requires EPA to establish standards for RFG to be used in specified ozone nonattainment areas. Ozone nonattainment areas classified as marginal, moderate, serious or severe, may also be included in the RFG program if requested by the state’s Governor. EPA is required to establish an implementation date for the area to be included in the program within a year of the governor’s request.


St. Louis, Missouri is currently classified as a moderate ozone nonattainment area. The St. Louis area continues to exceed the National Ambient Air Quality Standards (NAAQS) for ozone and faces the possibility of being “bumped up” to a serious classification. In order to address these concerns and identify the best possible options for addressing the area’s air quality problems, the state consulted both industry and environmental representatives. The state identified several options and ultimately decided to support the use of federal RFG gasoline.

On July 13, 1998, EPA received a letter from Governor Carnahan of Missouri officially requesting that the St. Louis area be included in the federal reformulated gasoline program.

Additional Resources

  • Final Rule (pdf) (7 pp, 50 KB, published March 3, 1999)
  • Fact Sheet: Final Rule Adds St. Louis, Missouri, to the Federal Reformulated Gasoline Program (pdf) (2 pp, 9.3 KB, EPA420-F-99-006, February 1999)

Gasoline Standards

  • Learn About
  • Gasoline Programs
  • Announcements
  • Regulations
  • Compliance
  • Fuel Waivers & Exemptions
Contact Us About Gasoline Standards
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 7, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.