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HGB: Latest Ozone Planning Activities

Latest events and activities related to the Houston-Galveston-Brazoria (HGB) area’s compliance with the National Ambient Air Quality Standards (NAAQS) for ground-level ozone.

Last updated: 11/30/2016

New HGB Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On December 15, 2016, the commission will consider adoption of the HGB Attainment Demonstration (AD) State Implementation Plan (SIP) Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-016-SIP-NR). The AD SIP revision meets Federal Clean Air Act (FCAA) requirements and includes a photochemical modeling analysis, a weight of evidence analysis, a reasonably available control technology analysis, a reasonably available control measures analysis, a motor vehicle emissions budget for 2017, and a contingency plan. The AD SIP revision incorporates revisions to 30 Texas Administrative Code Chapter 115.

New HGB Reasonable Further Progress SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On December 15, 2016, the commission will consider adoption of the HGB Reasonable Further Progress (RFP) SIP Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-017-SIP-NR). To meet FCAA requirements, the SIP revision includes an analysis of reasonable further progress toward attainment of the 2008 eight-hour ozone standard, demonstrating a 15% emissions reduction in ozone precursors from the 2011 base year through the 2017 attainment year, a 3% emissions reduction for contingency in 2018, and updated RFP motor vehicle emissions budgets.

Proposed HGB Attainment Demonstration SIP Revision: Updated 2017 On-Road Mobile Source Emissions Inventory

The TCEQ has received updated 2017 on-road mobile source emissions inventories (EIs) that it plans to incorporate into the adoption of the Houston-Galveston Brazoria (HGB) Attainment Demonstration (AD) State Implementation Plan (SIP) Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area, Project Number 2016-016-SIP-NR. Because the SIP development schedule was compressed due to the EPA’s proposed January 1, 2017 submittal deadline, the September 21, 2016 proposed SIP revision included preliminary on-road EIs for the 2017 future year. The change in the 2017 on-road EIs between proposal and adoption was anticipated by the TCEQ as discussed in the proposed HGB AD SIP revision and Appendix B: Emissions Inventory Modeling for the HGB Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone Standard.

The following table shows the differences between the preliminary 2017 on-road EIs and the updated 2017 on-road EIs that are planned for use in the adoption scheduled for December 15, 2016.

HGB AD
SIP Revision

2017 Vehicle Miles Traveled (VMT)

2017 On-Road
nitrogen oxides (NOX) tons per day (tpd)

2017 On-Road
volatile organic compounds
(VOC) tpd

Proposal

163,443,282

85.87

45.08

Planned for Adoption

167,839,692

95.56

54.40

Difference

4,396,410

9.69

9.32

The 2017 on-road EIs for the proposal were based on the MOVES2014 model version and VMT projections of historical Highway Performance Monitoring System (HPMS) data collected by the Texas Department of Transportation. Detailed information for this work is available at: ftp://amdaftp.tceq.texas.gov/pub/EI/2012_episodes/future_2017/onroad/tex/mvs14/.

The 2017 on-road EIs planned to be included in the adopted HGB AD SIP will establish attainment year NOX and VOC motor vehicle emissions budgets (MVEBs) for the HGB area. If these MVEBs are found adequate or approved by the United States Environmental Protection Agency, they will be used in future transportation conformity determinations. The VMT estimates for this updated inventory were based on travel demand modeling work performed by the Houston-Galveston Area Council and an HPMS adjustment factor of 0.90955. The full on-road emissions analysis with the 2014a version of the Motor Vehicle Emission Simulator (MOVES2014a) model was performed by the Texas Transportation Institute, and the detailed information for this work is available at: ftp://amdaftp.tceq.texas.gov/pub/EI/2012_episodes/future_2017/onroad/hgb/mvs14a/.

Proposed HGB Attainment Demonstration SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On September 21, 2016, the commission approved proposal of the HGB Attainment Demonstration (AD) State Implementation Plan (SIP) Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-016-SIP-NR). The AD SIP revision would meet Federal Clean Air Act (FCAA) requirements and include a photochemical modeling analysis, a weight of evidence analysis, a reasonably available control technology analysis, a reasonably available control measures analysis, a motor vehicle emissions budget for 2017, and a contingency plan. The AD SIP revision would incorporate proposed revisions to 30 Texas Administrative Code Chapter 115.

A public hearing on the proposed AD SIP revision, as well as the proposed HGB Reasonable Further Progress (RFP) SIP Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-017-SIP-NR) and on proposed revisions to 30 Texas Administrative Code Chapter 115, will be held on October 24, 2016 at 2:00 p.m. at the Texas Department of Transportation District Office Auditorium at 7600 Washington Avenue, Houston, TX 77007. The public comment period is from September 23, 2016 through October 24, 2016.

Proposed HGB Reasonable Further Progress SIP Revision for the 2008 Eight-Hour Ozone NAAQS

On September 21, 2016, the commission approved proposal of the HGB Reasonable Further Progress (RFP) SIP Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-017-SIP-NR). To meet FCAA requirements, the proposed SIP revision would include an analysis of reasonable further progress toward attainment of the 2008 eight-hour ozone standard, demonstrating a 15% emissions reduction in ozone precursors from the 2011 base year through the 2017 attainment year, a 3% emissions reduction for contingency in 2018, and updated RFP motor vehicle emissions budgets.

A public hearing on the proposed RFP SIP revision, as well as the proposed HGB Attainment Demonstration (AD) State Implementation Plan (SIP) Revision for the 2008 Eight-Hour Ozone Standard Nonattainment Area (Project No. 2016-016-SIP-NR) and on proposed revisions to 30 Texas Administrative Code Chapter 115, will be held on October 24, 2016 at 2:00 p.m. at the Texas Department of Transportation District Office Auditorium at 7600 Washington Avenue, Houston, TX 77007. The public comment period is from September 23, 2016 through October 24, 2016.

Redesignation Substitute (RS) SIP Revision for the HGB 1997 Eight-Hour Ozone Standard Nonattainment Area

On April 27, 2016, the commission adopted the HGB Area Redesignation Substitute SIP Revision for the 1997 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2015-001-SIP-NR). The SIP revision formally documents the anti-backsliding obligations for the revoked 1997 eight-hour ozone NAAQS and ensures that the substance of the redesignation requirements is met for the HGB area. This redesignation substitute takes the place of a redesignation request and maintenance plan, which the EPA would require for a standard that has not been revoked.

Redesignation Substitute (RS) Report for the HGB 1997 Eight-Hour Ozone Standard Nonattainment Area

On August 18, 2015, the TCEQ submitted the Redesignation Substitute (RS) Report for the HGB 1997 Eight-Hour Ozone Standard Nonattainment Area to the United States Environmental Protection Agency (EPA). This RS 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 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 RS report is based on certain Federal Clean Air Act redesignation criteria and includes: monitoring data showing attainment of the revoked 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 standard through 2028 via emissions inventory trends and future emission projections.

HGB Area Redesignation Substitute SIP Revision for the One-Hour Ozone NAAQS

On July 1, 2015, the commission adopted the HGB Redesignation Substitute SIP Revision for the One-Hour Ozone NAAQS (Non-Rule Project No. 2014-011-SIP-NR). The SIP revision satisfies the anti-backsliding obligations for the revoked one-hour ozone NAAQS and ensures that the substance of the redesignation requirements is met for the HGB area. This redesignation substitute takes the place of a redesignation request and maintenance plan, which the EPA would require for a standard that has not been revoked.

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).

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.

The EPA published final approval of the redesignation substitute report on October 20, 2015 (80 FR 63429) Exit the TCEQ.

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.