Dallas-Fort Worth: Latest Ozone Planning Activities
Last updated: 4/4/18
Proposed DFW 2008 Eight-Hour Ozone Standard Nonattainment Area Reasonably Available Control Technology (RACT) Update State Implementation Plan (SIP) Revision
On April 4, 2018, the commission approved proposal of 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 proposed DFW 2008 Eight-Hour Ozone Standard Nonattainment Area RACT Update SIP revision (Non-Rule Project No. 2017-001-SIP-NR) would address 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.
- Appendices
The commission will hold a public hearing regarding the proposed voluntary Agreed Order and the proposed SIP revision in Arlington on May 10, 2018 at 2:00 p.m. in the Arlington Municipal Building, City Council Chamber, located at 101 W. Abram Street. The public comment period will be from April 6, 2018 through May 11, 2018.
DFW 2008 Eight-Hour Ozone Attainment Demonstration SIP Revision for the 2017 Attainment Year
On July 6, 2016, the commission adopted the DFW 2008 Eight-Hour Ozone Nonattainment Area Attainment Demonstration (AD) SIP Revision for the 2017 Attainment Year (Non-Rule Project No. 2015-014-SIP-NR). This SIP revision includes a photochemical modeling analysis, a weight of evidence analysis, and a reasonably available control measures analysis that reflect a D.C. Circuit Court decision that changed the moderate area attainment deadline for the 2008 eight-hour ozone NAAQS to July 20, 2018 with a 2017 attainment year.
- Appendices
- Appendix A: Meteorological Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix B: Emissions Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix C: Photochemical Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix D: Conceptual Model for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix E: Protocol for the Eight-Hour Ozone Modeling of the Dallas-Fort Worth Area
- Appendix F: Reasonably Available Control Technology Analysis
- Appendix G: Reasonably Available Control Measures Analysis
- Appendix H: Local Initiatives Submitted by the North Central Texas Council of Governments
Redesignation Substitute SIP Revision for the DFW One-Hour and 1997 Eight-Hour Ozone Standard Nonattainment Area
On April 27, 2016, the commission adopted the DFW Area Redesignation Substitute SIP Revision for the one-hour and 1997 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2015-002-SIP-NR). The SIP revision formally documents the anti-backsliding obligations for the revoked one-hour and revoked 1997 eight-hour ozone NAAQS and ensures that the substance of the redesignation requirements is met for the DFW area. This redesignation substitute takes the place of a redesignation request and maintenance plan, which the United States Environmental Protection Agency would require for a standard that has not been revoked.
- Redesignation Substitute SIP Revision
- Appendices
- Appendix A: Projection Factors for Point and Area Sources
- Appendix B: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions
- Appendix C: Condensate Tank Oil and Gas Activities
- Appendix D: Specified Oil and Gas Well Activities Emissions Inventory Update
- Appendix E: Forecasting Oil and Gas Activities
- Appendix F: Development of DFW On-Road Emission Inventories For the Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix G: Development of Air Emissions Inventories for Non-Road Model Category Mobile Sources (Task 3)
- Appendix H: Airport Emissions Inventories for the Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix I: Controlled and Uncontrolled Average Summer Weekday Locomotive Inventories for Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix J: Development of Texas Stateside Drilling Rigs Emission Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
Proposed DFW 2008 Eight-Hour Ozone Nonattainment Area Attainment Demonstration SIP Revision for the 2017 Attainment Year
On December 9, 2015, the commission approved proposal of the DFW 2008 Eight-Hour Ozone Nonattainment Area Attainment Demonstration (AD) SIP Revision for the 2017 Attainment Year (Non-Rule Project No. 2015-014-SIP-NR). This SIP revision would include a photochemical modeling analysis, a weight of evidence analysis, and a reasonably available control measures analysis that reflect a 2017 attainment year to address the D.C. Circuit Court decision that changed the moderate area attainment deadline for the 2008 eight-hour ozone NAAQS to July 20, 2018 with a 2017 attainment year.
The public comment period opened on December 11, 2015, and closed on January 29, 2016. Public hearings on the proposed SIP revision were held at the following times and locations:
| City | Date | Time | Location |
|---|---|---|---|
| Arlington | January 21, 2016 | 6:30 P.M. |
North Central Texas Council of Governments 616 Six Flags Drive Arlington, TX 76011 |
| Austin | January 26, 2016 | 10:00 A.M. |
TCEQ Headquarters 12100 Park 35 Circle Bldg. E, Rm. 201 Austin, TX 78753 |
- Appendices
- Appendix A: Meteorological Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix B: Emissions Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix C: Photochemical Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix D: Conceptual Model for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix E: Protocol for the Eight-Hour Ozone Modeling of the Dallas-Fort Worth Area
- Appendix F: Reasonably Available Control Technology Analysis
- Appendix G: Reasonably Available Control Measures Analysis
- Appendix H: Local Initiatives Submitted by the North Central Texas Council of Governments
Proposed Redesignation Substitute SIP Revision for the DFW One-Hour and 1997 Eight-Hour Ozone Standard Nonattainment Area
On September 23, 2015, the commission approved proposal of the DFW Area Redesignation Substitute SIP Revision for the one-hour and 1997 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2015-002-SIP-NR). The SIP revision would satisfy the anti-backsliding obligations for the revoked one-hour and revoked 1997 eight-hour ozone NAAQS and ensure that the substance of the redesignation requirements is met for the DFW area. This redesignation substitute would take the place of a redesignation request and maintenance plan, which the United States Environmental Protection Agency would require for a standard that has not been revoked. A public hearing on this proposed SIP revision will be held on October 29, 2015 at 2:00 p.m in the Arlington City Council Chambers at 101 West Abram Street, Arlington, Texas 76010.
- Redesignation Substitute SIP Revision
- Appendices
- Appendix A: Projection Factors for Point and Area Sources
- Appendix B: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions
- Appendix C: Condensate Tank Oil and Gas Activities
- Appendix D: Specified Oil and Gas Well Activities Emissions Inventory Update
- Appendix E: Forecasting Oil and Gas Activities
- Appendix F: Development of DFW On-Road Emission Inventories For the Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix G: Development of Air Emissions Inventories for Non-Road Model Category Mobile Sources (Task 3)
- Appendix H: Airport Emissions Inventories for the Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix I: Controlled and Uncontrolled Average Summer Weekday Locomotive Inventories for Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Appendix J: Development of Texas Stateside Drilling Rigs Emission Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
Redesignation Substitute Report for the DFW One-Hour and 1997 Eight-Hour Ozone Standard Nonattainment Area
On August 18, 2015, the TCEQ submitted the Redesignation Substitute Report for the DFW One-Hour and 1997 Eight-Hour Ozone Standard Nonattainment Area to the EPA. This report fulfills the EPA’s redesignation substitute requirements in its Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements; Final Rule (80 FR 12264) to lift anti-backsliding obligations for the revoked one-hour and 1997 eight-hour ozone NAAQS by ensuring that specific redesignation requirements are met for the HGB area under the revoked standard. According to EPA’s 2008 ozone standard SIP requirements rule, this redesignation substitute report is based on certain Federal Clean Air Act redesignation criteria and includes: monitoring data showing attainment of the revoked one-hour and 1997 eight-hour ozone NAAQS; a showing that attainment was due to permanent and enforceable emissions reductions; and a demonstration that the area can maintain the standards through 2028 via emissions inventory trends and future emission projections.
- Redesignation Substitute Report
- Attachments
- Attachment A: Projection Factors for Point and Area Sources
- Attachment B: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions
- Attachment C: Condensate Tank Oil and Gas Activities
- Attachment D: Specified Oil and Gas Well Activities Emissions Inventory Update
- Attachment E: Forecasting Oil and Gas Activities
- Attachment F: Development of DFW On-Road Emission Inventories for the Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Attachment G: Development of Air Emissions Inventories for NONROAD Model Category Mobile Sources (Task 3)
- Attachment H: Airport Emissions Inventories for Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Attachment I: Controlled and Uncontrolled Average Summer Weekday Locomotive Inventories for Houston-Galveston-Brazoria and Dallas-Fort Worth Areas for Select Years 2012, 2014, 2017, 2020, 2023, 2026, and 2028
- Attachment J: Development of Texas Statewide Drilling Rigs Emissions Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
DFW Attainment Demonstration and Reasonable Further Progress SIP Revisions for the 2008 Eight-Hour Ozone NAAQS
On June 3, 2015, the commission adopted two two revisions to the Texas State Implementation Plan (SIP) for the DFW nonattainment area for the 2008 eight-hour ozone standard: the DFW Attainment Demonstration (AD) SIP Revision for the 2008 Eight-Hour Ozone Standard (Non-Rule Project No. 2013-015-SIP-NR) and the DFW Reasonable Further Progress (RFP) SIP Revision for the 2008 Eight-Hour Ozone Standard (Non-Rule Project No. 2013-014-SIP-NR). The AD SIP revision incorporates revisions to 30 Texas Administrative Code Chapters 101, 115, and 117.
- DFW 2008 Eight-Hour Ozone AD SIP Revision
- Appendices
- Appendix A: Meteorological Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix B: Emissions Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix C: Photochemical Modeling for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix D: Conceptual Model for the DFW Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard
- Appendix E: Modeling Protocol for the Eight-Hour Ozone Modeling of the Dallas-Fort Worth Area
- Appendix F: Reasonably Available Control Technology Analysis
- Appendix G: Reasonably Available Control Measures Analysis
- Appendix H: Local Initiatives Submitted by the North Central Texas Council of Governments
- Appendix I: Technical Supplement to the December 10, 2014 proposal of the Dallas-Fort Worth Attainment Demonstration State Implementation Plan Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area
- DFW 2008 Eight-Hour Ozone RFP SIP Revision
- Appendices
- Appendix 1: Reasonable Further Progress Demonstration Spreadsheet
- Appendix 2: Development of Reasonable Further Progress Point Source Emissions Inventories for the Dallas-Fort Worth Nonattainment Area
- Appendix 3: Projection Factors for Point and Area Sources
- Appendix 4: Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions and Specified Oil and Gas Well Activities Emissions Inventory Update
- Appendix 5: Condensate Tank Oil and Gas Activities
- Appendix 6: Forecasting Oil and Gas Activities
- Appendix 7: 2011 Texas Railroad Emission Inventory Report
- Appendix 8: Development of Texas Statewide Drilling Rigs Emission Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
- Appendix 9: Development of Annual Emissions Inventories and Activity Data for Airports in the 12-County Dallas-Fort Worth Area and Development of Statewide Annual Emissions Inventories and Activity Data for Airports
- Appendix 10: On-road RFP Emissions Inventories for the Years 2011, 2017, 2018, and 2019
- Appendix 11: Technical Supplement to the December 10, 2014 Proposal of the Dallas-Fort Worth Reasonable Further Progress State Implementation Plan Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area
Update: The 2017 Wise County RFP demonstration in the adopted DFW RFP SIP revision used a transfer of excess VOC reductions from the nine-county area previously designated as nonattainment to the newly designated Wise County. Upon notification that the option to transfer creditable VOC reductions between county groups was no longer available per the EPA's final 2008 Ozone Standard SIP Requirements Rule (80 FR 12264) 
, the TCEQ corrected the adopted DFW RFP analyses to remove the VOC reduction transfer and credit emission reductions from drilling rig controls that were available but had not been credited. The corrections were submitted to the EPA in an April 22, 2016 technical supplement.
Request for Determination of Attainment of the 1997 Eight-Hour Ozone Standard for the Houston-Galveston-Brazoria (HGB) and Dallas-Fort Worth (DFW) Areas
In a letter dated February 27, 2015, the TCEQ requested that the United States Environmental Protection Agency (EPA) issue a determination of attainment, also known as a clean data determination, for the 1997 eight-hour ozone National Ambient Air Quality Standard (NAAQS) for the HGB and DFW nonattainment areas. Under 40 Code of Federal Regulations (CFR) §51.918 as well as proposed CFR §51.1118, an EPA determination that an area is attaining the 1997 eight-hour ozone NAAQS suspends certain state planning requirements related to attainment of the standard. This determination of attainment request is based on complete, quality-assured, certified ambient air monitoring data that show the HGB and the DFW areas have monitored attainment of the 1997 eight-hour ozone NAAQS for 2012 through 2014. The HGB area monitored attainment of the standard with an 80 parts per billion (ppb) design value and the DFW area with an 81 ppb design value. The 2014 Annual Data Certification was submitted to the EPA on February 27, 2015.
Emissions Inventory (EI) SIP Revision for the 2008 Eight-Hour Ozone Standard for the Houston-Galveston-Brazoria (HGB) and Dallas-Fort Worth (DFW) Areas
On July 2, 2014, the commission adopted the EI SIP revision for the 2008 Eight-Hour Ozone Standard (Non-Rule Project No. 2013-016-SIP-NR). This SIP revision satisfies the Federal Clean Air Act (FCAA), §172 and §182 requirements for the HGB and DFW nonattainment areas under the 2008 eight-hour ozone standard. The SIP revision includes 2011 emissions inventories for ozone precursors (volatile organic compounds and nitrogen oxides) from point, area, on-road mobile, non-road mobile, and biogenic emissions source categories as the base year emissions inventories for the HGB and DFW areas.
For additional information, please visit the Air Pollution from Ozone webpage.
Public Information Meeting: Eight-Hour Ozone Planning for the DFW Area
The TCEQ held a public information meeting to provide information on the development of revisions to the state implementation plan (SIP) for the 2008 ozone NAAQS in the 10-county DFW nonattainment area on Thursday, September 5, 2013 at 10:00 a.m. at the North Central Texas Council of Governments (NCTCOG) offices. NCTCOG and United States Environmental Protection Agency representatives also provided updates on local and federal initiatives.
DFW Air Quality Update Presentation
State Implementation Plan Development Presentation