HGB: Latest Ozone Planning Activities
Last updated: 05/22/2015
Request for Determination of Attainment of the 1997 Eight-Hour Ozone Standard for the Houston-Galveston-Brazoria (HGB) and Dallas-Fort Worth (DFW) Areas and Request for a One-Year Extension of the HGB 2008 Eight-Hour Ozone Standard Attainment Date
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.
The TCEQ also requested a one-year attainment date extension to July 20, 2016 for the HGB 2008 eight-hour ozone NAAQS marginal nonattainment area in accordance with Federal Clean Air Act, §181(a)(5). The TCEQ certifies that the state has complied with all marginal requirements and commitments pertaining to the HGB area by submitting a base year emissions inventory state implementation plan (SIP) revision to the EPA on July 16, 2014. The EPA published direct final approval of this SIP revision in the February 20, 2015 Federal Register (80 FR 9204). The HGB area also meets the monitoring data requirement with a 72 ppb fourth highest daily eight-hour monitored average in the HGB 2008 ozone nonattainment area as measured at the Conroe Relocated monitor (C78/A321) in 2014. At the request of the EPA, a second letter was submitted on May 22, 2015 that provided clarification regarding the TCEQ's certification that Texas meets the requirements of FCAA §181(a)(5)(A).
Extension of Comment Period for the Proposed HGB Area Redesignation Substitute SIP Revision for the One-Hour Ozone NAAQS
Due to the supplemental information regarding on-road mobile emissions inventories based on the MOVES2014 emissions model made available by the TCEQ on December 18, 2014, the comment period for the proposed HGB Redesignation Substitute (RS) SIP revision (Non-Rule Project No. 2014-011-SIP-NR) was extended to January 18, 2015.
Supplement to the Proposed HGB Area Redesignation Substitute SIP Revision for the One-Hour Ozone NAAQS
A supplement to the proposed HGB Redesignation Substitute (RS) SIP revision (Non-Rule Project No. 2014-011-SIP-NR) was developed for a possible transition at adoption from on-road mobile source emissions inventories developed using the EPA’s Motor Vehicle Emission Simulator (MOVES) 2010b model to those developed using the MOVES2014 model. The supplement provides additional technical detail regarding MOVES2014 model-based on-road mobile source emissions estimates that became available after the HGB RS SIP revision was approved for proposal by the commission on November 19, 2014. The proposed SIP revision was developed using the MOVES2010b on-road model.
If MOVES2014 inventories are used at adoption, it is expected that the final emissions figures and maintenance results would be different than those reported in the proposed SIP revision. Instead of relying solely on the use of MOVES2010b inventories, the TCEQ performed a preliminary analysis based on approximate MOVES2014-based on-road emissions inventories as a supplement to the proposed HGB RS SIP revision for consideration during the public comment period. The public comment period ended on January 18, 2015.
HGB Area Redesignation Substitute SIP Revision for the One-Hour Ozone NAAQS
On November 19, 2014, the commission approved proposal of the HGB Redesignation Substitute SIP revision (Non-Rule Project No. 2014-011-SIP-NR). The proposed SIP revision would satisfy the anti-backsliding obligations for the revoked one-hour ozone NAAQS and ensure that the substance of the redesignation requirements is met for the HGB area. This redesignation substitute would take the place of a redesignation request and maintenance plan, which the EPA would require for a standard that has not been revoked.
- Redesignation Substitute SIP Revision
- 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: MOVES2010b-Based On-Road Inventories in Support of the HGB Ozone Nonattainment Area Redesignation Substitute Analysis
- Appendix E: Development of Statewide Annual Emissions Inventory and Activity Data for Airports
- Appendix F: 2011 Texas Railroad Emission Inventory Report
- Appendix G: Development of 2011 Statewide Toxics and Actual Annual and Ozone Season Weekday Emissions Inventories for Commercial Marine Vessels
- Appendix H: Development of Texas Statewide Drilling Rigs Emissions Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
- Appendix I: Development of Locomotive and Commercial Marine Emissions Inventory - 1990 to 2040
A public hearing for this SIP revision is scheduled for January 6, 2015 at 2:00 p.m. at the Texas Department of Transportation District Office Auditorium, 7600 Washington Avenue, Houston, TX 77007. The public comment period is from December 5, 2014 through January 18, 2015.
August 26, 2011 One-Hour Ozone Exceptional Event Technical Support Document Submitted to EPA
On September 30, 2014 the TCEQ submitted a technical support document to the U.S. EPA Region 6 office in Dallas, Texas. This document supports the commission’s conclusion that large wildfires in the Northwestern and Southeastern United States caused an exceedance of the one-hour ozone NAAQS on August 26, 2011 at the Houston East (CAMS 1) monitoring site. Emissions from numerous fires in these two regions transported to the Houston area and caused an exceedance of the one-hour ozone NAAQS that would not otherwise have occurred.
Under current federal rules, the U.S. EPA will now evaluate the submittal and decide whether to concur or not. If the U.S. EPA concurs with Texas’ conclusions then ozone measurements made at the Houston East monitoring site on August 26, 2011 will not be compared to the ozone NAAQS for determinations of compliance or noncompliance with ozone NAAQS.
Redesignation Substitute (RS) Report for the HGB One-Hour Ozone Nonattainment Area
On July 22, 2014, the TCEQ submitted the RS Report for the HGB One-Hour Ozone Standard Nonattainment Area to the United States Environmental Protection Agency (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; Proposed Rule (78 FR 34178) to lift anti-backsliding obligations for the revoked one-hour ozone NAAQS by ensuring that specific redesignation requirements are met for the HGB area under the revoked standard. According to EPA’s proposed 2008 ozone standard SIP requirements rule, this report is based on certain Federal Clean Air Act (FCAA) redesignation criteria and includes: monitoring data showing attainment of the revoked one-hour ozone NAAQS; a showing that attainment was due to permanent and enforceable emissions reductions; and a demonstration that the area can maintain the standard through 2026 via emissions inventory trends and future emission projections.
- Redesignation Substitute Report
- 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: MOVES2010b-Based On-Road Inventories in Support of the HGB Ozone Nonattainment Area Redesignation Substitute Analysis
- Attachment E: Development of Statewide Annual Emissions Inventory and Activity Data for Airports
- Attachment F: 2011 Texas Railroad Emission Inventory Report
- Attachment G: Development of 2011 Statewide Toxics and Actual Annual and Ozone Season Weekday Emissions Inventories for Commercial Marine Vessels
- Attachment H: Development of Texas Statewide Drilling Rigs Emissions Inventories for the Years 1990, 1993, 1996, and 1999 through 2040
- Attachment I: Development of Locomotive and Commercial Marine Emissions Inventory - 1990 to 2040
Emissions Inventory (EI) SIP Revision for the 2008 Eight-Hour Ozone Standard for the 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 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 Web page.
HGB 1997 Eight-Hour Ozone Standard Nonattainment Area MVEB Update SIP Revision
On April 23, 2013, the commission adopted the HGB 1997 Eight-Hour Ozone Standard Nonattainment Area Motor Vehicle Emissions Budgets (MVEB) Update State Implementation Plan (SIP) Revision. This SIP revision updates the March 2010 HGB attainment demonstration and reasonable further progress (RFP) SIP revisions for the 1997 eight-hour ozone standard by replacing the on-road mobile source emissions inventories for nitrogen oxides (NOX) and volatile organic compounds (VOC) based on the EPA's MOBILE model with those based on the EPA’s Motor Vehicle Emission Simulator (MOVES) model. The 2008, 2011, 2014, 2017, and 2018 NOX and VOC MVEBs and the contingency analyses are also updated using the MOVES-based emissions inventories. Updated on-road inventories and emissions analysis based on the EPA’s August 30, 2012 vehicle miles traveled offset guidance and a modified version of the MOVES model, MOVES2010bROP, demonstrate compliance with Federal Clean Air Act requirements for transportation control measures in severe nonattainment areas. A review of emissions inventory data, photochemical modeling, and the quantitative and qualitative corroborative analyses used as weight of evidence in this SIP revision supports the March 2010 HGB attainment demonstration. This SIP revision meets the primary obligation of the mid-course review commitment in the March 2010 HGB attainment demonstration by demonstrating that the outstanding 3% contingency requirement is fulfilled.
HGB RACT Analysis Update SIP Revision Adopted December 7, 2011
On December 7, 2011, the commission adopted the HGB Reasonably Available Control Technology (RACT) Analysis Update SIP Revision for the 1997 Eight-Hour Ozone Standard to include Control Techniques Guidelines (CTG) documents that were not addressed in the March 2010 HGB Attainment Demonstration SIP revision for the 1997 Eight-Hour Ozone Standard. This SIP revision also incorporated CTG-related rulemaking for the HGB area (Project No. 2012-028-SIP-NR)
HGB Attainment Demonstration and Reasonable Further Progress SIP Revisions Adopted March 10, 2010
On March 10, 2010, the commission adopted two revisions to the Texas SIP for the HGB nonattainment area for the 1997 eight-hour ozone standard: the HGB Attainment Demonstration SIP Revision for the 1997 Eight-Hour Ozone Standard and the HGB Reasonable Further Progress SIP Revision for the 1997 Eight-Hour Ozone Standard. The commission also adopted associated rule projects revising 30 Texas Administrative Code, Chapters 101 and 115, which address cap integrity in the Mass Emissions Cap and Trade (MECT) program, a cap reduction and allowance reallocation for the Highly Reactive Volatile Organic Compounds (HRVOC) Emissions Cap and Trade (HECT) program, and an update to CTGs for VOC used in offset printing. (Project Nos. 2009-017-SIP-NR/2009-018-SIP-NR)
For more information on the SIP revisions for the 1997 eight-hour ozone standard HGB severe nonattainment area, including downloadable Portable Document Format (PDF) documents, please visit the SIP Revisions: Houston-Galveston-Brazoria, March 10, 2010, December 7, 2011, and April 23, 2013 Web page.