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SIP Hot Topics

Hot topics related to Texas' State Implementation Plan (SIP) for air quality.

Please visit the Texas SIP Revisions webpage for more details on Proposed SIP Revisions and Public Hearing Information and Adopted SIP Revisions.

(Last updated: 2/21/2023)

New Public Information Meetings – Proposed Particulate Matter National Ambient Air Quality Standard (NAAQS) Revision

The Texas Commission on Environmental Quality (TCEQ) is hosting virtual public information meetings to provide information on the potential impacts of the United States Environmental Protection Agency’s (EPA) proposal to lower the primary annual fine particulate matter (PM2.5) National Ambient Air Quality Standard (NAAQS) from its current level of 12 micrograms per cubic meter (µg/m3) to between 9 and 10 µg/m3.

The TCEQ will provide information on the proposed NAAQS revision, designations process, and requirements for an area designated nonattainment. These meetings will focus on implementation of the potential revised NAAQS and not on the health effects associated with the NAAQS revision. The virtual public information meetings will be held for potentially impacted counties on the following days:

  • March 3, 2023 from 9:30 a.m. to 11 a.m. (CST) – Atascosa and Travis Counties
  • March 3, 2023 from 1:30 p.m. to 3 p.m. (CST) – Harris, Jefferson, and Montgomery Counties
  • March 6, 2023 from 2:30 p.m. to 4 p.m. (CST) – Cameron, El Paso, Hidalgo, Kleberg, and Webb Counties
  • March 10, 2023 from 9:30 a.m. to 11 a.m. (CST) – Bowie, Dallas, Harrison, and Tarrant Counties

Information on the PM2.5 NAAQS proposal is available on the EPA’s website.

New Reuniones de Información Pública – Propuesta de Revisión del Estándar Nacional de Calidad del Aire Ambiental de Marteria Particulada

La Comisión de Calidad Ambiental de Texas (TCEQ, por sus siglas en inglés) está organizando reuniones de información pública en línea para proporcionar información sobre los impactos potenciales de la propuesta de la Agencia de Protección Ambiental de los Estados Unidos (EPA, por sus siglas en inglés) para reducir el Estandar Nacional de Calidad del Aire Ambiental (NAAQS, por sus siglas en inglés) primario anual de partículas finas (PM2.5, por sus siglas en inglés) de su nivel actual de 12 microgramos por metro cúbico (µg/m3, por sus siglas en inglés) a entre 9 y 10 µg/m3.

La TCEQ proporcionará información sobre la revisión propuesta de NAAQS, el proceso de designación y los requisitos para un área designada como incumplimiento. Estas reuniones se centrarán en la implementación de las posibles NAAQS revisadas y no en los efectos negativos asociados con la revisión de las NAAQS. Las reuniones de información pública en línea se llevarán a cabo para los condados potencialmente afectados en los días siguientes:

  • 3 de marzo de 2023 de 9:30 a.m. a 11 a.m. (CST) – Condados de Atascosa and Travis
  • 3 de marzo de 2023 de 1:30 p.m. a 3 p.m. (CST) – Condados de Harris, Jefferson, and Montgomery Counties
  • 6 de marzo de 2023 de 2:30 p.m. a 4 p.m. (CST) – Condados de Cameron, El Paso, Hidalgo, Kleberg, and Webb
  • 10 de marzo de 2023 de 9:30 a.m. a 11 a.m. (CST) – Condados de Bowie, Dallas, Harrison, and Tarrant

La información sobre la propuesta PM2.5 NAAQS está disponible en el sitio web de la EPA.

North Central Texas Council of Goverments (NCTCOG) - Federal Clean Air Act (FCAA) Section 185 Fee Meeting Announcement

On February 17, 2023, NCTCOG hosted a meeting with the EPA and the TCEQ to discuss impending federal requirements for stationary source fees. This meeting provided an overview of the FCAA Section 185 fee requirements for point sources (power plants, cement kilns, and more), and the fiscal burden the Dallas-Fort Worth (DFW) severe ozone nonattainment area will face if the area fails to attain the 2008 eight-hour ozone NAAQS by July 20, 2027.  

El Paso County Emissions Inventory (EI) SIP Revision for the 2015 Eight-Hour Ozone NAAQS

On November 16, 2022, the commission adopted the 2015 Eight-Hour Ozone NAAQS EI SIP Revision for the El Paso County portion of the El Paso-Las Cruces, Texas-New Mexico Nonattainment Area. The SIP revision satisfies the federal Clean Air Act, §172(c)(3) and §182(a)(1) EI reporting requirements for El Paso County for the 2015 eight-hour ozone NAAQS. The SIP revision also includes a certification statement to confirm that the emissions statements and nonattainment new source review requirements have been met for El Paso County.

For additional information, please visit the Air Pollution from Ozone webpage.

Revisión del Plan de Implementación del Estado del Inventario de Emisiones del Condado de El Paso para la Estándar Nacional de Calidad del Aire Ambiental de Ozono de Ocho Horas de 2015

El 16 de noviembre de 2022, la comisión adoptó la revision al plan de implementación del estado (SIP, por sus siglas en inglés) del inventario de emisiones (EI, por sus siglas en inglés) del Estándar Nacional de Calidad del Aire Ambiental (NAAQS, por sus siglas en inglés) de ozono de ocho horas de 2015 para la porción del Condado de El Paso del área de incumplimiento de El Paso-Las Cruces, Texas-Nuevo México. La revisión del SIP satisface los requisitos de reporte del EI de la Ley Federal de Aire Limpio, Sección 172(c)(3) y Sección 182(a)(1) para el Condado de El Paso para el NAAQS de ozono de ocho horas de 2015. La revisión del SIP también incluye una declaración de certificación para confirmar que las declaraciones de emisiones y los requisitos de revisión de la nueva fuente de incumplimiento han sido cumplidos para el Condado de El Paso.

Para obtener información adicional, visite la página web de contaminación del aire por ozono.

El Paso Exceptional Event Demonstration

On December 23, 2020, high winds caused blowing dust in and around El Paso County. Due to these high winds, the PM10 levels at the Socorro Hueco and El Paso Mimosa monitors in El Paso County on December 23, 2020, were not reasonably controllable or preventable. The Texas Commission on Environmental Quality plans to submit an exceptional event demonstration to the EPA to exclude these data. TCEQ posted this demonstration for written public comment on October 26, 2022. The TCEQ will accept public comments on the demonstration until December 2, 2022. All comments become part of the public record. For more information on the demonstration and the comment process, please visit the Particulate Matter Data Exceptional Event Flag Demonstrations webpage.

Demostración de un Evento Excepcional en El Paso

E 23 den diciembre del 2020, los fuertes vientos causaron polvo en el condado de El Paso y sus alrededores. Debido a estos fuertes vientos, los niveles de partículas de 10 micrómetros o menos (PM10) no fueron razonablemente controlables o prevenibles  en dos monitores en el condado de El Paso (Socorro Hueco y El Paso Mimosa).  La Comisión de Calidad Ambiental de Texas planea presentar una demostración de evento excepcional a la EPA para excluir estos datos. La TCEQ publicó esta demostración para comentarios públicos por escrito el 26 octubre de 2022. La TCEQ aceptará comentarios públicos sobre la demostración hasta el 2 de diciembre de 2022. Todos los comentarios pasan a formar parte del registro público. Para obtener más información sobre la demostración y el proceso de comentarios, visite la página web de Demostraciones Excepcionales de Eventos para Materia Particulada.

Howard County Attainment Demonstration SIP Revision for the 2010 One-Hour Sulfur Dioxide (SO2) NAAQS

On October 5, 2022, the commission adopted the Howard County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-010-SIP-NR). The SIP revision addresses federal Clean Air Act (FCAA) SIP requirements for the Howard County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all reasonably available control measures (RACM) and reasonably available control technology (RACT); air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated 30 Texas Administrative Code (TAC) Chapter 112, Subchapter E rulemaking (Rule Project No. 2021-035-112-AI) provides the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026, attainment deadline.

Hutchinson County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS

On October 5, 2022, the commission adopted the Hutchinson County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-011-SIP-NR). The SIP revision addresses FCAA SIP requirements for the Hutchinson County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all RACM and RACT; air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated 30 TAC Chapter 112, Subchapter F rulemaking (Rule Project No. 2021-035-112-AI) provides the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026, attainment deadline.

Revisión del Plan de Implementación del Estado (SIP, por sus siglas en inglés) de Demostración de Logro del Condado de Hutchinson para el Dióxido de Azufre (SO2, por sus siglas en inglés) de Una Hora de 2010 Estándar Nacional de Calidad del Aire Ambiental (NAAQS, por sus siglas en inglés)

El 5 de octubre de 2022, la comisión adoptó la Revisión del SIP de Demostración de Logros del Condado de Hutchinson para el NAAQS de SO2 de una hora de 2010 (Proyecto No. 2021-011-SIP-NR). La revisión del SIP aborda los requisitos federales del SIP de la Ley de Aire Limpio para el área de no logro de SO2 del Condado de Hutchinson al incluir un inventario completo de las emisiones actuales de SO2; evaluación y provisión para implementar todas las medidas de control razonablemente disponibles y la tecnología de control razonablemente disponible; modelización de dispersión de calidad del aire para demostrar el logro; una demostración de progreso adicional razonable; medidas de contingencia; y certificación de que se cumplen los requisitos de revisión de nuevas fuentes de incumplimiento.

La associada 30 Código Administrativo de Texas Capítulo 112, Subcapítulo F reglamentación (Proyecto de Regla No. 2021-035-112-AI) proporcionaría la estrategia de control exigible necesaria para demostrar el logro del NAAQS de SO2 de 2010 para la fecha de logro del 30 de abril de 2026.

Navarro County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS

On October 5, 2022, the commission adopted the Navarro County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-012-SIP-NR). The SIP revision addresses FCAA SIP requirements for the Navarro County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all RACM and RACT; air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated 30 TAC Chapter 112, Subchapter G rulemaking (Rule Project No. 2021-035-112-AI) provides the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026 attainment date.

Dallas-Fort Worth (DFW) Air Quality Technical Information Meeting

On August 24, 2022, the TCEQ held a virtual Air Quality Technical Information Meeting for the DFW nonattainment area. The purpose of the meeting was to inform stakeholders of air quality modeling and other technical information relevant to the ozone nonattainment area.

Presentation materials are available to view on the DFW AQ TIM webpage.

San Antonio (SAN) Air Quality Technical Information Meeting

On August 22, 2022, the TCEQ held a virtual Air Quality Technical Information Meeting for the SAN nonattainment area. The purpose of the meeting was to inform stakeholders of air quality modeling and other technical information relevant to the ozone nonattainment area.

Presentation materials are available to view on the SAN AQ TIM webpage.

Houston-Galveston-Brazoria (HGB) Air Quality Technical Information Meeting

On July 28, 2022, the TCEQ held a virtual Air Quality Technical Information Meeting for the HGB nonattainment area. The purpose of the meeting was to inform stakeholders of air quality modeling and other technical information relevant to the ozone nonattainment area.

Presentation materials are available to view on the HGB AQ TIM webpage.

Proposed El Paso County Emissions Inventory (EI) SIP Revision for the 2015 Eight-Hour Ozone NAAQS

On June 15, 2022, the commission approved proposal of the 2015 Eight-Hour Ozone NAAQS EI SIP Revision for the El Paso County portion of the El Paso-Las Cruces, Texas-New Mexico Nonattainment Area. The proposed SIP revision would satisfy the federal Clean Air Act, §172(c)(3) and §182(a)(1) EI reporting requirements for El Paso County for the 2015 eight-hour ozone NAAQS. The proposed SIP revision would also include a certification statement to confirm that the emissions statements and nonattainment new source review requirements have been met for El Paso County.

The public comment period will open on June 17, 2022 and close on July 21, 2022. A public hearing on the proposed SIP revision will be held on July 18, 2022 at 6:00 p.m. MDT in the Carlos M. Ramirez TecH2O Water Resources Learning Center, located at 10751 Montana Avenue in El Paso, Texas. The hearing will be conducted in English, and Spanish language interpretation services will be made available. For more information, please visit the Proposed SIP Revisions and Public Hearing Information section of the Texas SIP Revisions webpage.

For additional information, please visit the Air Pollution from Ozone webpage.

Revisión Propuesta del Plan de Implementación del Estado del Inventario de Emisiones del Condado de El Paso para la Estándar Nacional de Calidad del Aire Ambiental de Ozono de Ocho Horas de 2015

El 15 de junio de 2022, la comisión aprobó la revision propuesta al plan de implementación del estado (SIP, por sus siglas en inglés) del inventario de emisiones (EI, por sus siglas en inglés) del Estándar Nacional de Calidad del Aire Ambiental (NAAQS, por sus siglas en inglés) de ozono de ocho horas de 2015 para la porción del Condado de El Paso del área de incumplimiento de El Paso-Las Cruces, Texas-Nuevo México. La revisión propuesta del SIP satisfaría los requisitos de reporte del EI de la Ley Federal de Aire Limpio, Sección 172(c)(3) y Sección 182(a)(1) para el Condado de El Paso para el NAAQS de ozono de ocho horas de 2015. La revisión propuesta del SIP también incluiría una declaración de certificación para confirmar que las declaraciones de emisiones y los requisitos de revisión de la nueva fuente de incumplimiento han sido cumplidos para el Condado de El Paso.

El período de comentarios públicos se abrirá el 17 de junio de 2022 y se cerrará el 21 de julio de 2022. Una audiencia pública sobre la revisión propuesta del SIP se llevará a cabo el 18 de julio de 2022 a las 6:00 p.m. MDT en el Carlos M. Ramírez TecH2O Water Resources Learning Center, ubicado en 10751 Montana Avenue en El Paso, Texas. La audiencia se llevará a cabo en inglés, y los servicios de interpretación en español estarán disponibles. Para más información, por favor visite la sección de Revisiones SIP e Información de Audiencias Públicas de la página web de Revisiones SIP de Texas.

Para obtener información adicional, visite la página web de contaminación del aire por ozono. 

Proposed Howard County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS

On April 13, 2022, the commission approved proposal of the Howard County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-010-SIP-NR). The proposed SIP revision addresses federal Clean Air Act (FCAA) SIP requirements for the Howard County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all reasonably available control measures (RACM) and reasonably available control technology (RACT); air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated proposed 30 Texas Administrative Code (TAC) Chapter 112, Subchapter E rulemaking (Rule Project No. 2021-035-112-AI) would provide the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026, attainment deadline.

A public comment period will open on April 15, 2022 and close on June 2, 2022. A public hearing on the proposed SIP revision will be held on May 18, 2022 at 6:00 p.m. in the Dora Roberts Community Center Ball Room located at 100 Whipkey Drive in Big Spring, Texas. For more information, please visit the Proposed SIP Revisions and Public Hearing Information section of the Texas SIP Revisions webpage.

Proposed Hutchinson County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS

On April 13, 2022, the commission approved proposal of the Hutchinson County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-011-SIP-NR). The proposed SIP revision addresses FCAA SIP requirements for the Hutchinson County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all RACM and RACT; air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated proposed 30 TAC Chapter 112, Subchapter F rulemaking (Rule Project No. 2021-035-112-AI) would provide the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026, attainment deadline.

A public comment period will open on April 15, 2022 and close on June 2, 2022. A public hearing on the proposed SIP revision will be held on May 19, 2022 at 6:00 p.m. in the Borger City Hall City Council Room at 600 North Main Street in Borger, Texas. The hearing will be conducted in English. Language interpretation services may be requested. For more information, please visit the Proposed SIP Revisions and Public Hearing Information section of the Texas SIP Revisions webpage.

Propuesta Revisión del Plan de Implementación del Estado (SIP, por sus siglas en inglés) de Demostración de Logro del Condado de Hutchinson para el Dióxido de Azufre (SO2, por sus siglas en inglés) de Una Hora de 2010 Estándar Nacional de Calidad del Aire Ambiental (NAAQS, por sus siglas en inglés)

El 13 de abril de 2022, la comisión aprobó la propuesta Revisión del SIP de Demostración de Logros del Condado de Hutchinson para el NAAQS de SO2 de una hora de 2010 (Proyecto No. 2021-011-SIP-NR). La propuesta revisión del SIP aborda los requisitos federales del SIP de la Ley de Aire Limpio para el área de no logro de SO2 del Condado de Hutchinson al incluir un inventario completo de las emisiones actuales de SO2; evaluación y provisión para implementar todas las medidas de control razonablemente disponibles y la tecnología de control razonablemente disponible; modelización de dispersión de calidad del aire para demostrar el logro; una demostración de progreso adicional razonable; medidas de contingencia; y certificación de que se cumplen los requisitos de revisión de nuevas fuentes de incumplimiento.

La propuesta associada 30 Código Administrativo de Texas Capítulo 112, Subcapítulo F reglamentación (Proyecto de Regla No. 2021-035-112-AI) proporcionaría la estrategia de control exigible necesaria para demostrar el logro del NAAQS de SO2 de 2010 para la fecha de logro del 30 de abril de 2026.

El período de comentarios públicos se abrirá el 15 de abril de 2022 y se cerrará el 2 de junio de 2022. Una audiencia pública sobre el SIP propuesto y las revisiones de las reglas se llevará a cabo el 19 de mayo de 2022 a las 6:00 p.m. en la Sala del Ayuntamiento de Borger ubicado en 600 North Main Street en Borger, Texas. La audiencia se llevará a cabo en inglés. Se pueden solicitar servicios de interpretación de idiomas. Para más información, visite la página web de Revisiones Propuestas del SIP e Información de la Audiencia Pública sección de la página web de Revisiones del SIP de Texas.

Proposed Navarro County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS

On April 13, 2022, the commission approved proposal of the Navarro County Attainment Demonstration SIP Revision for the 2010 One-Hour SO2 NAAQS (Project No. 2021-012-SIP-NR). The proposed SIP revision addresses FCAA SIP requirements for the Navarro County SO2 nonattainment area by including a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all RACM and RACT; air quality dispersion modeling to demonstrate attainment; a reasonable further progress demonstration; contingency measures; and certification that nonattainment new source review requirements are met.

The associated proposed 30 TAC Chapter 112, Subchapter G rulemaking (Rule Project No. 2021-035-112-AI) would provide the enforceable control strategy needed to demonstrate attainment of the 2010 SO2 NAAQS by the April 30, 2026 attainment date.

A public comment period will open on April 15, 2022 and close on June 2, 2022. A public hearing on the proposed SIP revision will be held on May 23, 2022 at 6:00 p.m. in the Cook Education Center of Navarro College located at 3100 West Collin Street in Corsicana, Texas. For more information, please visit the Proposed SIP Revisions and Public Hearing Information section of the Texas SIP Revisions webpage.

Redesignation Request and Maintenance Plan SIP Revision for the Freestone-Anderson and Titus 2010 SO2 NAAQS Nonattainment Areas

On February 23, 2022, the commission adopted the Redesignation Request and Maintenance Plan SIP Revision for the Freestone-Anderson and Titus 2010 SO2 NAAQS Nonattainment Areas (Non-Rule Project No. 2021-007-SIP-NR). The SIP revision includes a request that the United States Environmental Protection Agency (EPA) redesignate the Freestone-Anderson and Titus nonattainment areas to attainment for the 2010 SO2 NAAQS and provides 10-year maintenance plans for both areas consistent with FCAA, §175A requirements. The SIP revision also addresses the comprehensive emissions inventory and nonattainment new source review certification statement SIP requirements provided under Part D of the FCAA.

Rusk-Panola Attainment Demonstration SIP Revision for the 2010 SO2 NAAQS and Associated Agreed Order

On February 9, 2022, the commission adopted the Rusk-Panola Attainment Demonstration SIP Revision for the 2010 SO2 NAAQS (Non-Rule Project No. 2020-057-SIP-NR). The SIP revision includes a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all reasonably available control measures RACM and RACT; air quality dispersion modeling to demonstrate attainment of the 2010 SO2 NAAQS; a reasonable further progress (RFP) demonstration; contingency measures; and certification that nonattainment new source review requirements are met for the Rusk-Panola 2010 SO2 NAAQS nonattainment area.

An associated Agreed Order with Luminant Generation Company, LLC (Non-Rule Project No. 2021-013-OTH-NR) provides the enforceable control strategy for this attainment demonstration by documenting the commission's order, and the company's agreement, to comply with requirements identified for the Martin Lake Steam Electric Station, pursuant to the Texas Clean Air Act, the Texas Health & Safety Code, and the FCAA.

El Paso County International Transport 179B Demonstration

The TCEQ is taking public comment on a demonstration showing that El Paso County would have attained the 2015 eight-hour ozone NAAQS by the marginal attainment date of August 3, 2021 “but for” international contributions from neighboring Ciudad Juárez in Mexico. The FCAA, §179B(b) retrospective demonstration describes the technical analyses that support the TCEQ’s conclusion. Comments will be accepted from December 17, 2021 through January 21, 2022. For more information on the demonstration and the comment process, please visit the 179B Demonstration for El Paso County webpage.

Proposed Rusk-Panola Attainment Demonstration SIP Revision for the 2010 SO2 NAAQS and Associated Agreed Order

On September 8, 2021, the commission approved proposal of the Rusk-Panola Attainment Demonstration SIP Revision for the 2010 SO2 NAAQS (Non-Rule Project No. 2020-057-SIP-NR). The proposed SIP revision includes a comprehensive inventory of current SO2 emissions; evaluation and provision for implementing all RACM and RACT; air quality dispersion modeling to demonstrate attainment of the 2010 SO2 NAAQS; an RFP demonstration; contingency measures; and certification that nonattainment New Source Review requirements are met for the Rusk-Panola 2010 SO2 NAAQS nonattainment area.

An associated proposed Agreed Order with Luminant Generation Company, LLC (Non-Rule Project No. 2021-013-OTH-NR) provides the enforceable control strategy for this attainment demonstration by documenting the commission's order, and the company's agreement, to comply with requirements identified for the Martin Lake Steam Electric Station, pursuant to the Texas Clean Air Act, the Texas Health & Safety Code, and the FCAA.

The public comment period will open on September 10, 2021 and close on October 13, 2021. A virtual public hearing on the proposed SIP revision will be held on October 12, 2021 at 2:00 p.m. Central Standard Time. Individuals who plan to attend the public hearing must register by October 5, 2021. For information about how to register, please visit the Proposed SIP Revisions and Public Hearing Section of the Texas SIP Revisions webpage.

Proposed Redesignation Request and Maintenance Plan SIP Revision for the Freestone-Anderson and Titus 2010 SO2 NAAQS Nonattainment Areas

On August 25, 2021, the commission approved proposal of the Redesignation Request and Maintenance Plan SIP Revision for the Freestone-Anderson and Titus 2010 SO2 NAAQS Nonattainment Areas (Non-Rule Project No. 2021-007-SIP-NR). The proposed SIP revision includes a request that the EPA redesignate the Freestone-Anderson and Titus nonattainment areas to attainment for the 2010 SO2 NAAQS and provides 10-year maintenance plans for both areas consistent with FCAA, §175A requirements. The proposed SIP revision also addresses the comprehensive emissions inventory and nonattainment new source review certification statement SIP requirements provided under Part D of the FCAA.

The public comment period will open on August 27, 2021 and close on September 29, 2021. A virtual public hearing on the proposed SIP revision will be held on September 28, 2021 at 2:00 p.m. Central Standard Time. Individuals who plan to attend the public hearing must register by September 21, 2021. For information about how to register, please visit the Proposed SIP Revisions and Public Hearing Section of the Texas SIP Revisions webpage.

Request for Reasonably Available Control Measures Ideas

The TCEQ is requesting ideas for potential RACM that could be implemented in the Dallas-Fort Worth (DFW), Houston-Galveston-Brazoria (HGB), and San Antonio nonattainment areas. RACM is a requirement under the FCAA, §172(c)(1) and is required for nonattainment areas with an ozone classification of moderate nonattainment and above. Potential RACM measures submitted to the TCEQ will be used to assist in nonattainment area planning for the 2008 and 2015 eight-hour ozone national ambient air quality standards. The deadline to submit RACM ideas is August 6, 2021 by 11:59 p.m. 

Information about RACM is available in the presentation provided below. 

Information about this request and RACM idea submissions should be directed to Joseph Thomas at Joseph.Thomas@tceq.texas.gov and Anthony DeJesus at Anthony.Dejesus@tceq.texas.gov.

2021 Regional Haze SIP Revision

On June 30, 2021, the commission adopted the 2021 Regional Haze SIP Revision (Project No. 2019-112-SIP-NR). The SIP revision demonstrates compliance with the regional haze requirements of FCAA, §169A and the EPA's Regional Haze Rule for the second planning period. The SIP revision addresses regional haze in Big Bend and Guadalupe Mountains National Parks in Texas and Class I areas located outside Texas that may be affected by emissions from within the state.

DFW Exceptional Events Demonstration

The TCEQ has identified natural and human caused wildfire events in Colorado and California that led to high concentrations of ozone at the Grapevine Fairway monitor on August 16, 17, and 21, 2020. Consequently, the TCEQ submitted an exceptional event demonstration to the EPA requesting the EPA exclude ozone data at the Grapevine Fairway monitor on those dates when making determinations for attainment or other regulatory purposes. The TCEQ accepted public comment from April 14, 2021 to May 14, 2021 on the exceptional event demonstration. For more information on the demonstration and the comment process, please visit the Ozone Data Exceptional Event Flag Demonstrations webpage.

Round 4 Designations for the 2010 SO2 NAAQS

On March 26, 2021, the EPA published final Round 4 designations for the 2010 SO2 NAAQS. TCEQ staff held an informational kickoff meeting for sources in the newly designated nonattainment areas on March 25, 2021.

Withdrawal of the El Paso One-Hour Ozone Redesignation Request and Maintenance Plan SIP Revision

On September 25, 2020, the commission approved the El Paso One-Hour Ozone Redesignation Request and Maintenance Plan SIP Withdrawal (Non-Rule Project No. 2020-040-SIP-NR). This action withdraws from the EPA's review, the El Paso Redesignation Request and Maintenance Plan SIP Revision for the One-Hour Ozone NAAQS, adopted by the commission on April 24, 2019.

Withdrawal of the One-Hour Ozone portion of the Beaumont-Port Arthur (BPA) One-Hour Ozone Redesignation Request and Maintenance Plan and the 1997 Eight-Hour Ozone Second 10-Year Maintenance Plan SIP Revision

On September 25, 2020, the commission approved the BPA One-Hour Ozone Redesignation Request and Maintenance Plan SIP Withdrawal (Non-Rule Project No. 2020-039-SIP-NR). This action withdraws from the EPA's review, a portion of the BPA Redesignation Request and Maintenance Plan for the One-Hour Ozone Standard and Second 10-Year Maintenance Plan for the 1997 Eight-Hour Ozone Standard SIP Revision, adopted by the commission on January 30, 2019. The withdrawn portion concerns the state's redesignation request and maintenance plan for the 1979 one-hour ozone NAAQS.

Bexar County 2015 Eight-Hour Ozone Nonattainment Area 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. 

2015 Eight-Hour Ozone NAAQS Emissions Inventory (EI) SIP Revision for the HGB, DFW, and Bexar County Nonattainment Areas

On June 10, 2020, the commission adopted the 2015 Eight-Hour Ozone NAAQS EI SIP Revision for the HGB, DFW, and Bexar County Nonattainment Areas (Non-Rule Project No. 2019-111-SIP-NR). The SIP revision satisfies FCAA, §172(c)(3) and §182(a)(1) EI reporting requirements for areas designated nonattainment for the 2015 eight-hour ozone NAAQS. The revision also includes certification statements to confirm that the emissions statement and nonattainment new source review requirements have been met for the HGB, DFW, and Bexar County 2015 eight-hour ozone nonattainment areas.

DFW Serious Classification Attainment Demonstration (AD) SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On March 4, 2020, the commission adopted the DFW Serious Classification AD SIP Revision for the 2008 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2019-078-SIP-NR). The SIP revision includes a photochemical modeling analysis, a weight of evidence analysis, a RACT analysis, a reasonably available control measures analysis, motor vehicle emissions budgets for 2020, and a contingency plan. This SIP revision also incorporates revisions to the 30 Texas Administrative Code Chapters 115 and 117 rules to address major source RACT requirements for nitrogen oxides and volatile organic compounds associated with reclassification from moderate to serious.

HGB Serious Classification AD SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On March 4, 2020, the commission adopted the HGB Serious Classification AD SIP Revision for the 2008 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2019-077-SIP-NR). The SIP revision includes a photochemical modeling analysis, a weight of evidence analysis, a reasonably available control technology analysis, a reasonably available control measures analysis, motor vehicle emissions budgets for 2020, and a contingency plan.

DFW and HGB Serious Classification Reasonable Further Progress (RFP) SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On March 4, 2020, the commission adopted the DFW and HGB Serious Classification RFP SIP Revision for the 2008 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2019-079-SIP-NR). To meet FCAA requirements, the SIP revision includes an analysis of reasonable further progress toward attainment of the 2008 eight-hour ozone NAAQS, demonstrating 9% emissions reduction in ozone precursors from January 1, 2018 through December 31, 2020, a 3% reduction from January 1, 2021 through December 31, 2021 for attainment year RFP contingency, and RFP motor vehicle emissions budgets for the 2020 attainment year.

El Paso Redesignation Request and Maintenance Plan SIP Revision for the One-Hour Ozone NAAQS

On April 24, 2019, the commission adopted the El Paso Redesignation Request and Maintenance Plan SIP Revision for the One-Hour Ozone NAAQS (Non-Rule Project No. 2018-029-SIP-NR). The SIP revision includes a request that the United States Environmental Protection Agency (EPA) redesignate the El Paso area (El Paso County) to attainment for the one-hour ozone NAAQS and provides a maintenance plan that will ensure the area remains in attainment of the NAAQS through 2032. The SIP revision includes a request that the EPA also consider this plan as a second 10-year maintenance plan for the one-hour ozone NAAQS.

DFW Redesignation Request and Maintenance Plan SIP Revision for the One-Hour and 1997 Eight-Hour Ozone NAAQS

On March 27, 2019, the commission adopted the DFW Redesignation Request and Maintenance Plan SIP Revision for the One-Hour and 1997 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2018-028-SIP-NR). The SIP revision includes a request that the EPA redesignate the DFW area to attainment for the one-hour and 1997 eight-hour ozone NAAQS and provides a maintenance plan that will ensure the area remains in attainment of the NAAQS through 2032.

BPA Redesignation Request and Maintenance Plan for the One-Hour Ozone Nonattainment Area and Second 10-Year Maintenance Plan for the 1997 Eight-Hour Ozone Nonattainment Area SIP Revision

On January 30, 2019, the commission adopted the BPA Redesignation Request and Maintenance Plan for the One-Hour Ozone Nonattainment Area and Second 10-Year Maintenance Plan for the 1997 Eight-Hour Ozone Nonattainment Area SIP revision. The SIP revision includes a request that the EPA redesignate the BPA area (Hardin, Jefferson, and Orange Counties) to attainment for the one-hour ozone NAAQS and provides a maintenance plan that will ensure the area remains in attainment of the NAAQS through 2032. The SIP revision includes a request that the EPA also consider this plan as a second 10-year maintenance plan for the one-hour ozone standard. The SIP revision also includes a second 10-year maintenance plan for the 1997 eight-hour ozone NAAQS.

HGB Redesignation Request and Maintenance Plan SIP Revision for the One-Hour and 1997 Eight-Hour Ozone NAAQS

On December 12, 2018, the commission adopted the HGB Redesignation Request and Maintenance Plan SIP Revision for the One-Hour and 1997 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2018-026-SIP-NR). The SIP revision includes a request that the EPA redesignate the HGB area to attainment for the one-hour and 1997 eight-hour ozone NAAQS and provides a maintenance plan that will ensure the area remains in attainment of the NAAQS through 2032.

SIP Revision to Remove Anti-Tampering and Early Action Compact (EAC) Low Income Repair Assistance Program (LIRAP)

On October 17, 2018, the commission adopted a SIP Revision to Remove Anti-tampering and EAC LIRAP (Non-Rule Project No. 2018-006-SIP-NR). The SIP revision removes Chapter 114, Subchapter B, and Section 114.86 from the SIP. Neither set of rules is a FCAA SIP requirement, and neither was adopted into the SIP with associated emissions reductions. Along with the SIP revision, this action withdraws from consideration four adopted amendments to the anti-tampering rules that are still pending action by the United States Environmental Protection Agency.

Infrastructure and Transport SIP Revisions for the 2015 Ozone Standard

On August 8, 2018, the commission adopted two revisions to the Texas SIP for the 2015 ozone NAAQS: the 2015 Ozone NAAQS Infrastructure SIP Revision (Non-Rule Project No. 2017-040-SIP-NR) and the 2015 Ozone NAAQS Transport SIP Revision (Non-Rule Project No. 2017-039-SIP-NR).

DFW 2008 Eight-Hour Ozone Standard Nonattainment Area Reasonably Available Control Technology (RACT) Update SIP Revision

On August 8, 2018, the commission adopted a revision to the Texas SIP for the DFW nonattainment area for the 2008 eight-hour ozone standard and a voluntary Agreed Order with TXI Operations, LP. The DFW 2008 Eight-Hour Ozone Standard Nonattainment Area RACT Update SIP revision (Non-Rule Project No. 2017-001-SIP-NR) addresses the United States Environmental Protection Agency’s final conditional approval of RACT for nitrogen oxides for the DFW 2008 eight-hour ozone standard nonattainment area through a voluntary Agreed Order No. 2017-1648-SIP (Non-Rule Project No. 2018-010-SIP-NR), with TXI Operations, LP.

Proposed SIP Revision to Remove Anti-Tampering and Early Action Compact (EAC) Low Income Repair Assistance Program (LIRAP)

On April 27, 2018, the commission approved proposal of a SIP Revision to Remove Anti-tampering and EAC LIRAP (Non-Rule Project No. 2018-006-SIP-NR). The proposed SIP revision would remove Chapter 114, Subchapter B, and Section 114.86 from the SIP. Neither set of rules is a FCAA SIP requirement, and neither was adopted into the SIP with associated emissions reductions. Along with the SIP revision, the requested action would withdraw from consideration four adopted amendments to the anti-tampering rules that are still pending action by the United States Environmental Protection Agency.

A public hearing on the proposed SIP revision was held on May 31, 2018 at 2:00 p.m. at the Texas Commission on Environmental Quality Headquarters in Building E, Room 201S, located at 12100 Park 35 Circle, Austin TX. The public comment period opened on May 1, 2018 and closed on June 4, 2018.

DRAFT SIP Timeline - Estimated Dates and Activities 2020

This draft timeline reflects the ongoing SIP revision activities that will continue through 2020. 

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