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Air Quality Conformity Public Comment Period
In response to the recent amendments to the long-term regional transportation plan (RTP) and the new 2025-2028 Transportation Improvement Program (TIP), the Houston-Galveston Area Council has set forth a proposed air quality conformity determination.
This conformity determination demonstrates that the project lists for both the RTP and TIP are compliant with the latest approved emission budgets as prepared by the Texas Commission on Environmental Quality (TCEQ) and approved by the Environmental Protection Agency (EPA).
H-GAC held an in-person public meeting on Wednesday, September 17, 2025 to inform the public about air quality conformity and how it relates to the region's transportation plans. Information about this meeting can be found in Appendix G of the conformity documentation.
2025 Transportation Conformity Documents and Files
| Document | Notes | Date Posted/Updated |
|---|---|---|
| Executive Summary | 9/3/2025 | |
| Conformity Determination | 9/3/2025 | |
| Appendix A | Resolution of Adoption | |
| Appendix B.1 | RTP Project Listings | 9/11/2025 |
| Appendix B.2 | Fiscal Constraint | 8/29/2025 |
| Appendix C.1 | Travel Model Validation | 8/29/2025 |
| Appendix C.2 | Links, Miles, Centerline, and Lane Miles Summaries | 8/29/2025 |
| Appendix C.3 | Link Listing and Capacity Staging | 8/29/2025 |
| Appendix C.4 | Roadway Network Files | 8/29/2025 |
| Appendix D.1 | MOVES Input and Output | 8/29/2025 |
| Appendix D.2 | MOVES Emission Factors | 8/29/2025 |
| Appendix D.3 | Activities | 8/29/2025 |
| Appendix D.4 | Emissions Modeling Utilities | 8/29/2025 |
| Appendix D.5 | VMT, Speed, and Emissions Summaries | 8/29/2025 |
| Appendix E.1 | Timely Implementation Documentation for TCM | 8/29/2025 |
| Appendix F.1 | Approved Pre-Analysis Consensus Plan | 8/29/2025 |
| Appendix F.2 | Consultation Review and Meeting Summary | 8/29/2025 |
| Appendix G.1 | Public Involvement Process | 10/15/2025 |