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.

Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • 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
    • Staff Directory

Breadcrumb

  1. Home
  2. Air Quality Implementation Plans

Approved Air Quality Implementation Plans in Region 6

Louisiana, Arkansas, Oklahoma, New Mexico, Texas and Tribal Nations

Use the links below to find approved State Implementation Plans (SIPs), Tribal Implementation Plans (TIPs), and Federal Implementation Plans (FIPs) within EPA's Region 6.

Resources

Region 6 Federal Air Quality Control Regions (AQCRs)

State Implementation Plans

Arkansas

  • EPA Approved Regulations in the Arkansas SIP
    • Arkansas Read Me
    • Arkansas SIP History
    • Previous Arkansas SIP-Approved Regulations
  • EPA Approved Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures

Louisiana

  • EPA Approved Regulations in the Louisiana SIP
    • Louisiana Read Me
    • Louisiana SIP History
    • Louisiana Register Citations in the Louisiana SIP-Approved Rule
    • Previous Louisiana SIP-Approved Regulations
  • EPA Approved Louisiana Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures

New Mexico

  • EPA Approved New Mexico State-Wide Regulations in the New Mexico SIP
  • EPA Approved New Mexico Albuquerque/Bernalillo County Regulations in the New Mexico SIP
    • New Mexico Read Me
    • New Mexico SIP History
    • Previous Albuquerque/Bernalillo County SIP Approved Regulations
    • Previous New Mexico State-Wide SIP Approved Regulations
  • EPA Approved New Mexico Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures

Oklahoma

  • EPA Approved Regulations in the Oklahoma SIP
    • Oklahoma Read Me
    • Oklahoma SIP History
    • Previous Oklahoma SIP-Approved Regulations
  • EPA Approved Oklahoma Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures

Texas

  • EPA Approved Regulations in the Texas SIP
    • Texas Read Me
    • Texas SIP History
    • Previous Texas SIP-Approved Regulations
  • EPA Approved Texas Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures

Tribal Implementation Plans

Region 6 currently has no TIPs.

Federal Implementation Plans

State Location of FIPs in
40 CFR 52 (if applicable)
Location in Code of Federal Regulations

AR

Subpart E

http://www.ecfr.gov/cgi-bin/text-idx?SID=6a96a66baf4e1b2dcbbedbae52973d70&mc=true&node=sp40.3.52.e&rgn=div6
After link opens, click on “View table of contents for this page.”

LA

Subpart T

http://www.ecfr.gov/cgi-bin/text-idx?SID=6a96a66baf4e1b2dcbbedbae52973d70&mc=true&node=sp40.3.52.t&rgn=div6
After link opens, click on “View table of contents for this page.”

NM

Subpart GG

http://www.ecfr.gov/cgi-bin/text-idx?SID=6a96a66baf4e1b2dcbbedbae52973d70&mc=true&node=sp40.4.52.gg&rgn=div6
After link opens, click on “View table of contents for this page.”

OK

Subpart LL

http://www.ecfr.gov/cgi-bin/text-idx?SID=6a96a66baf4e1b2dcbbedbae52973d70&mc=true&node=sp40.4.52.ll&rgn=div6
After link opens, click on “View table of contents for this page.”

TX

Subpart SS

http://www.ecfr.gov/cgi-bin/text-idx?SID=6a96a66baf4e1b2dcbbedbae52973d70&mc=true&node=sp40.5.52.ss&rgn=div6
After link opens, click on “View table of contents for this page.”

Air Quality Implementation Plans

  • About Air Quality Implementation Plans
  • Approved Air Quality Implementation Plans
  • Develop an Air Quality SIP
  • Find a Regional Contact for Air Quality SIPs/FIPS/TIPs
  • Tools for SIP Status
Contact Us about Air Quality Implementation Plans
Contact Us about Air Quality Implementation Plans to ask a question, provide feedback, or report a problem.
Last updated on April 15, 2024
  • Assistance
  • Ayuda
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • Aide
  • Asistans
  • Korean
  • Assistência
  • Russian
  • Tulong
  • 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

Follow.