Texas SIP Revisions
This page provides quick access to complete texts of Texas air quality plans. Click the title of the plan for more details (where available). All air quality plans, including those that have since been superseded, withdrawn, or deleted, are included here for reference. Information is organized chronologically into the following categories:
- Proposed SIP Revisions and Public Hearing Information
- Adopted SIP Revisions
- Early Action Compact (EAC), Ozone (O3) Flex Plans, and EAC Area SIPs
- Agreements (MOAs, MOUs, Agreed Orders)
- Redesignation Substitutes
- Other Air Quality Plans
- How to Read These Tables
Proposed SIP Revisions and Public Hearing Information
The Texas Commission on Environmental Quality (commission) offers public hearings to receive testimony regarding proposed SIP revisions. The hearings are structured for the receipt of oral or written comments by interested persons. Open discussion is not permitted during the hearings; however, commission staff members are available to discuss the proposal 30 minutes prior to each hearing.
Persons who have special communication or other accommodation needs who are planning to attend a hearing should contact Jamie Zech, Air Quality Division at (512) 239-3935 or 1-800-RELAY-TX (TDD). Requests should be made as far in advance as possible.
Written comments on proposed SIP revisions may be submitted through the eComments system during the public comment period.
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| Proposal Date | SIP Revision Title / Rule Log | Public Hearing Information | Close of Comment Period |
| 10/7/20 | 2021 Regional Haze SIP Revision (2019-112-SIP-NR) |
December 8, 2020 Virtual Public Hearing (English Notice) December 8, 2020 Virtual Public Hearing (Spanish Notice) If needed, TCEQ staff will be available to provide interpretation for Spanish-only speakers who have questions during the informal question and answer period beginning at 1:30 p.m. CST. Interpretation will not be provided during the formal hearing. Si es necesario, el personal del TCEQ estará disponible para proporcionar interpretación a los que solo hablan español que tengan preguntas durante el período informal de preguntas y respuestas a partir de las 1:30 p.m. CST. La interpretación no se proporcionará durante la audiencia formal. |
January 8, 2021 |
Adopted SIP Revisions
A SIP revision is made up of a narrative section, which is like a summary report, and typically will consist of various rules and agreements to legally fulfill what is written in the narrative.
Only one SIP exists for each state. For Texas, this document was initially approved in May 1972. Rather than rewriting the entire SIP each time changes are made, parts of the SIP are simply revised as needed.
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Early Action Compact (EAC) SIPs and Ozone (O3) Flex Plans
This section contains links to downloadable Early Action Compact (EAC) SIPs and O3 Flex plans. Click here for more information about Early Action Compact plans.
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| Date | Title | ARR | SAN | NETX | CC | Other |
| 6/18/08 | Austin Eight-Hour O3 Flex Plan (2007-020-MIS-NR) |
X | ||||
| 6/13/07 | Corpus Christi Eight-Hour O3 Flex Plan (2007-008-MIS-NR) |
X | ||||
| 11/17/04 | Austin Area 8-Hour Ozone Early Action Compact SIP Revision (2004-086-SIP-NR) |
X | ||||
| 11/17/04 | San Antonio Area 8-Hour Ozone Early Action Compact SIP Revision (2004-085-SIP-NR) |
X | ||||
| 11/17/04 | Northeast Texas Area 8-Hour Ozone Early Action Compact SIP Revision (2004-077-SIP-NR) |
X | ||||
| 3/29/04 | Austin/Round Rock MSA Clean Air Action Plan Early Action Compact   |
X | ||||
| 3/31/04 | Proposed AACOG Attainment Demonstration for the San Antonio EAC Region | X | ||||
| 3/31/04 | Clean Air Action Plan for Northeast Texas | X | ||||
| 9/17/02 | Corpus Christi O3 Flex Plan | X | ||||
| 3/28/02 | O3 Flex Plan for the Austin/San Marcos MSA | X |
Agreements (MOAs, MOUs, AOs)
This section lists agreements entered into by the TCEQ that pertains to the State Implementation Plan. Agreements include Memorandums of Agreement (MOAs), Memorandums of Understanding (MOUs), and Agreed Orders (AOs).
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Redesignation Substitutes
This section lists Redesignation Substitutes that have been developed by the TCEQ for nonattainment areas that have attained revoked standards.
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| Date* | Title | HGB | DFW | BPA | ELP | NETX | Other |
| 7/22/14 8/18/15 |
HGB One-Hour and 1997 Eight-Hour Ozone Redesignation Substitutes | X | |||||
| 8/18/15 | DFW One-Hour and 1997 Eight-Hour Ozone Redesignation Substitute | X |
*Date of report submittal to EPA
Other Air Quality Plans
This section lists other air quality-related plans which may not be directly related to Texas’ SIP, but which may be of general interest.
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- 2006 PM2.5 Infrastructure and Transport SIP (November 23, 2009)
- Ozone and PM2.5 Infrastructure SIP (April 4, 2008)
- El Paso Natural Events Action Plan (NEAP) (February 27, 2007)
- HGB TCM Substitution (April 15, 2005)
- DFW TCM Substitution (January 14, 2004)
How to Read These Tables
Date : The date the plan was formally adopted by the TCEQ (unless otherwise noted).
Title: Abbreviated title of the plan. Clicking on the title brings you to a Web page with additional information about that plan (such as proposed versions, responses to comments, appendices, associated rulemaking documents, etc.).
Rule Log Number: Official Texas Register Rule Log Number (where applicable)
PDF: Acrobat Portable Document Format version of the plan.
Geographic Areas: Clicking on the header will bring you to a Web page with additional information on that area. An “X” indicates that the plan in that row is effective in the area of that column.
- HGB: Houston-Galveston-Brazoria nonattainment area.
- DFW: Dallas-Fort Worth nonattainment area.
- BPA: Beaumont-Port Arthur nonattainment area.
- ELP: El Paso nonattainment area, attainment area and maintenance plans.
- NETX: Northeast Texas Early Action Compact area.
- ARR: Austin-Round Rock Early Action Compact area.
- SAN: San Antonio Early Action Compact Area and Ozone Nonattainment Area (Deferred).
- VIC: Victoria maintenance area.
- CC: Corpus Christi near nonattainment area.
- Other: Other areas that are subject to a particular plan.