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 is inviting public comment on the TIP and RTP project listings as well as the draft conformity analysis. All materials under review can be found on this page. Comments may be submitted through the form below or by emailing transportation conformity staff at: [email protected].

H-GAC will hold 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.

Transportation Conformity Public Meeting

Date and Time

Wednesday, September 17, 2025
6:00PM - 7:00PM

2025 Transportation Conformity Comments

Submit your comment on the 2025 Transportation Conformity.

All fields are requirements unless specified otherwise.

Required
Required

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 8/29/2025
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