San Antonio: Latest Ozone Planning Activities

The SIP files on this page are hosted by the Texas Records and Information Locator (TRAIL) web archive . If you need assistance with a file, please contact siprules@tceq.texas.gov.

Last updated: 3/13/2025

Bexar County Moderate Area Attainment Demonstration (AD) State Implementation Plan (SIP) Revision for the 2015 Eight-Hour Ozone National Ambient Air Quality Standard (NAAQS)

On March 13, 2025, the commission adopted the Bexar County 2015 Eight-Hour Ozone Moderate Area AD SIP Revision for the 2015 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2022-025-SIP-NR). This SIP revision includes certification statements to confirm that Nonattainment New Source Review and Stage I gasoline vapor recovery program requirements have been met for the Bexar County 2015 ozone NAAQS nonattainment area.

• Bexar County 2015 Eight-Hour Ozone Moderate Area AD SIP Revision for the 2015 Eight-Hour Ozone NAAQS
• Appendix
  • Appendix A:  Modeling Technical Support Document (TSD) (2022-025-SIP-NR)

Bexar County Moderate Area Reasonable Further Progress (RFP) SIP Revision for the 2015 Eight-Hour Ozone NAAQS

On March 13, 2025, the commission adopted the Bexar County Moderate Area RFP SIP Revision for the 2015 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2022-024-SIP-NR). The SIP revision demonstrates progress toward attainment of the 2015 ozone NAAQS using reductions of nitrogen oxide (NO_X) and volatile organic compound (VOC) emissions for the Bexar County 2015 ozone NAAQS moderate nonattainment area for the 2023 attainment year as well as the 2024 contingency year. The SIP revision also provides motor vehicle emissions budgets for the 2023 attainment year.

• Bexar County Moderate Area RFP SIP Revision for the 2015 Eight-Hour Ozone NAAQS
• Appendices
  • Appendix 1: Bexar County Reasonable Further Progress (RFP) Demonstration Spreadsheet (2022-024-SIP-NR adoption)
  • Appendix 2: Growth Factors for Area and Point Sources (2022-024-SIP-NR adoption)
  • Appendix 3: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions (2022-024-SIP-NR adoption)
  • Appendix 4: Industrial, Commercial, and Institutional (ICI) Fuel Use Study (2022-024-SIP-NR adoption)
  • Appendix 5: 2020 EPA Volatile Chemical Product (VCP) Nonpoint Emissions Methodology and Operator (NEMO) Instructions (DRAFT SOLVENTS NEMO) (2022-024-SIP-NR adoption)
  • Appendix 6: Development of the Nonroad Model RFP Emissions Inventories for the HGB Six-County, DFW Nine County, and Bexar County Ozone Nonattainment Areas (2022-024-SIP-NR adoption)
  • Appendix 7: 2014 Statewide Drilling Rig Emissions Inventory with Updated Trends Inventories (2022-024-SIP-NR adoption)
  • Appendix 8: 2020 Texas Statewide Locomotive and Rail Yard Emissions Inventory and 2011 through 2050 Trend Inventories (2022-024-SIP-NR adoption)
  • Appendix 9: 2020 Texas Statewide Airport Emissions Inventory and 2011 through 2050 Trend Inventories (2022-024-SIP-NR adoption)
  • Appendix 10: Bexar County 2015-Eight-Hour Ozone Nonattainment Area Reasonable Further Progress (RFP) On-Road Mobile Emissions Inventories (2022-024-SIP-NR adoption)

Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area Reasonably Available Control Technology (RACT) SIP Revision

On April 24, 2024, the commission adopted the Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area RACT SIP Revision (Non-Rule Project No. 2023-132-SIP-NR). The SIP revision includes RACT analysis to address moderate nonattainment area requirements for RACT mandated by federal Clean Air Act.

The SIP revision also incorporates revisions to 30 Texas Administrative Code Chapter 115 rulemaking (Rule Project No. 2023-116-115-AI) and 30 Texas Administrative Code Chapter 117 rulemaking (Rule Project No. 2023-117-117-AI), to address RACT requirements for volatile organic compounds and nitrogen oxides.

• Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area RACT SIP Revision
• Appendices
  • Appendix A: Reasonably Available Control Technology (RACT) Analysis (2023-132-SIP-NR adoption)

Proposed Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area RACT SIP Revision

On November 29, 2023, the commission approved proposal of the Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area RACT SIP Revision (Non-Rule Project No. 2023-132-SIP-NR). The proposed SIP revision includes a RACT analysis to address federal Clean Air Act RACT requirements for the moderate classification.

The proposed SIP revision also incorporates the proposed revisions to 30 Texas Administrative Code Chapter 115, Control of Air Pollution from Volatile Organic Compounds (Rule Project No. 2023-116-115-AI) and 30 Texas Administrative Code Chapter 117, Control of Air Pollution from Nitrogen Compounds (Rule Project No. 2023-117-117-AI).

The public comment period opened on December 1, 2023 and closed on January 16, 2024. A public hearing was held for the proposed SIP revision on January 9, 2024 at 7:00 p.m. in the Alamo Area Council of Governments board room, located at 2700 NE Loop 410, Suite 101, San Antonio, Texas.

• Proposed Bexar County 2015 Eight-Hour Ozone Standard Moderate Nonattainment Area RACT SIP Revision
  
  • Plain Language Summary of the Bexar County State Implementation Plan Revision
  • Resumen en lenguaje sencillo sobre la revisión al Plan de Implementación Estatal del Condado de Bexar
• Appendices
  •  Appendix A: Reasonably Available Control Technology (RACT) Analysis (2023-132-SIP-NR proposal)

Bexar County Inspection and Maintenance (I/M) SIP Revision

On November 29, 2023, the commission adopted the Bexar County I/M SIP Revision (Non-Rule Project No. 2022-027-SIP-NR). The SIP revision will implement a vehicle I/M program in the Bexar County 2015 eight-hour ozone National Ambient Air Quality Standard (NAAQS) nonattainment area by no later than November 1, 2026.

The SIP revision also incorporates the 30 Texas Administrative Code Chapter 114, Control of Air Pollution from Motor Vehicles rulemaking (Rule Project No. 2022-026-114-AI) relating to the expansion of the existing I/M program into the Bexar County 2015 ozone NAAQS nonattainment area.

• Bexar County I/M SIP Revision
• Attachment
  • Attachment B: Inspection and Maintenance (I/M) Program Performance Standard Modeling (PSM) for the New I/M Program in the Bexar County 2015 Ozone Nonattainment Area (Non-Rule Project No. 2022-027-SIP-NR)

Proposed Bexar County I/M SIP Revision

On May 31, 2023, the commission approved proposal of the Bexar County I/M SIP Revision (Non-Rule Project No. 2022-027-SIP-NR). The proposed SIP revision would implement a vehicle I/M program in the Bexar County 2015 eight-hour ozone NAAQS nonattainment area by no later than November 1, 2026. The associated proposed 30 Texas Administrative Code Chapter 114, Control of Air Pollution from Motor Vehicles rulemaking (Rule Project No. 2022-026-114-AI) expands the existing I/M program into the Bexar County 2015 ozone NAAQS nonattainment area.

The public comment period opened on June 2, 2023 and closed on July 17, 2023. A public hearing was held for the proposed SIP revision on July 13, 2023 at 7:00 p.m. at the Alamo Area Council of Governments, 2700 Northeast Loop 410, Suite 101, San Antonio, Texas.

• Proposed Bexar County I/M SIP Revision
  • Plain Language Summary of the Bexar County I/M Program Plan and Rulemaking
  • Resumen en Lenguaje Sencillo del Plan y Reglamentación del Programa de Inspección y Mantenimiento del Condado de Bexar
• Attachments
  • Attachment B: Inspection and Maintenance (I/M) Program Performance Standard Modeling (PSM) for the Proposed I/M Program in the Bexar County 2015 Ozone Nonattainment Area (2022-027-SIP-NR proposal)

Proposed Bexar County Moderate Area Attainment Demonstration (AD) SIP Revision for the 2015 Eight-Hour Ozone NAAQS

On May 31, 2023, the commission approved proposal of the Bexar County Moderate Area AD SIP Revision for the 2015 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2022-025-SIP-NR). The proposed SIP revision includes a photochemical modeling analysis, a weight of evidence analysis, a reasonably available control measures analysis, motor vehicle emissions budgets for 2023, and a contingency plan.

The public comment period opened on June 2, 2023 and closed on July 17, 2023. A public hearing was held for the proposed SIP revision on July 13, 2023 at 7:00 p.m. at the Alamo Area Council of Governments, 2700 Northeast Loop 410, Suite 101, San Antonio, Texas.

• Proposed Bexar County Moderate Area AD SIP Revision for the 2015 Eight-Hour Ozone NAAQS
  • Plain Language Summary of the 2015 Moderate Ozone Attainment Plan for Bexar County
  • Resumen en Lenguaje Sencillo del Plan de Logro de Ozono Moderado 2015 para el Condado de Bexar
• Appendices
  • Appendix A: Modeling Technical Support Document (TSD) (2022-025-SIP-NR proposal)
  • Appendix B: Conceptual Model for the Bexar County Nonattainment Area for the 2015 Eight-Hour Ozone National Ambient Air Quality Standards (2022-025-SIP-NR proposal)
  • Appendix C: Local Initiatives (2022-025-SIP-NR proposal)

Proposed Bexar County Moderate Area Reasonable Further Progress (RFP) SIP Revision for the 2015 Eight-Hour Ozone NAAQS

On May 31, 2023, the commission approved proposal of the Bexar County 2015 Eight-Hour Ozone Moderate Area RFP SIP Revision for the 2015 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2022-024-SIP-NR). This proposed SIP revision would demonstrate progress toward attainment of the 2015 ozone NAAQS using reductions of nitrogen oxide (NO_X) and volatile organic compound (VOC) emissions for the Bexar County 2015 ozone NAAQS moderate nonattainment area for the 2023 attainment year as well as the 2024 contingency year. This proposed SIP revision would also provide motor vehicle emissions budgets for the 2023 attainment year.

The public comment period opened on June 2, 2023 and close on July 17, 2023. A public hearing was held for the proposed SIP revision on July 13, 2023 at 7:00 p.m. at the Alamo Area Council of Governments, 2700 Northeast Loop 410, Suite 101, San Antonio, Texas.

• Proposed Bexar County Moderate Area RFP SIP Revision for the 2015 Eight-Hour Ozone NAAQS
  • Plain Language Summary of the 2015 Moderate Ozone RFP Plan for Bexar County
  • Resumen en Lenguaje Sencillo del Plan de Progreso Adicional Razonable del Ozono Moderado 2015 para el Condado de Bexar
• Appendices
  • Appendix 1: Bexar County Reasonable Further Progress (RFP) Demonstration Spreadsheet (2022-024-SIP-NR proposal)
  • Appendix 2: Growth Factors for Area and Point Sources (2022-024-SIP-NR proposal)
  • Appendix 3: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions (2022-024-SIP-NR proposal)
  • Appendix 4: Industrial, Commercial, and Institutional (ICI) Fuel Use Study (2022-024-SIP-NR proposal)
  • Appendix 5: 2020 EPA Volatile Chemical Product (VCP) Nonpoint Emissions Methodology and Operator (NEMO) instructions (Draft Solvents NEMO) (2022-024-SIP-NR proposal)
  • Appendix 6: Development of the Nonroad Model RFP Emissions Inventories for the HGB Six-County, DFW Nine-County, and Bexar County Ozone Nonattainment Areas (2022-024-SIP-NR proposal)
  • Appendix 7: 2014 Statewide Drilling Rig Emissions Inventory with Updated Trends Inventories (2022-024-SIP-NR proposal)
  • Appendix 8: 2020 Texas Statewide Locomotive and Rail Yard Emissions Inventory and 2011 through 2050 Trend Inventories (2022-024-SIP-NR proposal)
  • Appendix 9: 2020 Texas Statewide Airport Emissions Inventory and 2011 through 2050 Trend Inventories (2022-024-SIP-NR proposal)
  • Appendix 10: Bexar County 2015-Eight-Hour Ozone Nonattainment Area Reasonable Further Progress (RFP) On-Road Mobile Emissions Inventories (2022-024-SIP-NR proposal)

Bexar County 2015 Eight-Hour Ozone Nonattainment Area Federal Clean Air Act (FCAA), §179B Demonstration SIP Revision

On July 1, 2020, the commission adopted the Bexar County 2015 Eight-Hour Ozone Nonattainment Area FCAA, §179B Demonstration SIP Revision (Non-Rule Project No. 2019-106-SIP-NR). The SIP revision demonstrates that the Bexar County marginal ozone nonattainment area would attain the 2015 eight-hour ozone NAAQS by its attainment deadline “but for” anthropogenic emissions emanating from outside the United States. 

• Bexar County 2015 Eight-Hour Ozone Nonattainment Area FCAA, §179B SIP Revision
• Appendices
• Appendix A: Meteorological Modeling of Central and Eastern Texas (Adopted 2020)
• Appendix B: Emissions Modeling (Adopted 2020)
• Appendix C: Regional and Global Photochemical Model Performance Evaluation (Adopted 2020)
• Appendix D: Photochemical Modeling Protocol (Adopted 2020)
• Appendix E: Conceptual Model for the Bexar County Nonattainment Area for the 2015 Eight-Hour Ozone National Ambient Air Quality Standard (Adopted 2020)

Proposed Bexar County 2015 Eight-Hour Ozone Nonattainment Area FCAA, §179B Demonstration SIP Revision

On January 15, 2020, the commission approved proposal of the Bexar County 2015 Eight-Hour Ozone Nonattainment Area FCAA, §179B Demonstration SIP Revision (Non-Rule Project No. 2019-106-SIP-NR). The proposed SIP revision would demonstrate that the Bexar County marginal ozone nonattainment area would attain the 2015 eight-hour ozone NAAQS by its attainment deadline “but for” anthropogenic emissions emanating from outside the United States. 

The public comment period opened on January 17, 2020 and close on February 19, 2020. A public hearing on the proposed SIP revision was held on February 18, 2020 at 2:00 p.m. at the Alamo Area Council of Governments Board Room, 8700 Tesoro Drive, San Antonio.

• Proposed Bexar County 2015 Eight-Hour Ozone Nonattainment Area FCAA, §179B SIP Revision
• Appendices
• Appendix A: Meteorological Modeling of Central and Eastern Texas (Proposed 2020)
• Appendix B: Emissions Modeling (Proposed 2020)
• Appendix C: Regional and Global Photochemical Model Performance Evaluation (Proposed 2020)
• Appendix D: Photochemical Modeling Protocol (Proposed 2020)
• Appendix E: Conceptual Model for the Bexar County Nonattainment Area for the 2015 Eight-Hour Ozone National Ambient Air Quality Standard (Proposed 2020)

San Antonio Attains the 1997 Eight-Hour Ozone Standard

On April 2, 2008, the EPA issued final action to designate San Antonio, along with 12 other Early Action Compact areas, as attainment for the eight-hour ozone standard, as the area met all milestones of the EAC program and demonstrated attainment of the 1997 eight-hour ozone standard by December 31, 2007 ( 73 FR 17897 ). The effective date of this final action is April 15, 2008. Additionally, the one-hour ozone standard was revoked for the San Antonio area effective April 15, 2009.

Designating the San Antonio area as attainment for the 1997 eight-hour ozone standard means that there are no further state implementation plan requirements for the 1997 eight-hour ozone standard as long as the area continues to monitor attainment for the standard.