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2007 8-Hour Attainment Demonstration State Implementation Plan: Control Strategies

alt tag hereStaff Summary of Proposed SIP Control Strategies [PDF]

Lists of Potential Control Strategies

Other Documents

The North Central Texas Council of Governments (NCTCOG) – Regional Transportation Council (RTC) funds millions of dollars every year to implement projects, programs, and policies to reduce vehicles emissions that create ozone and improve the quality of life in the region. Many of these projects and programs are included in the State’s air quality plan, which is known as the State Implementation Plan (SIP). The SIP demonstrates how and when the nonattainment area will reach attainment of the National Ambient Air Quality Standard (NAAQS). The projects and programs listed in the SIP become federal air quality commitments;, thereby, making them legally binding commitments at the federal level.

2007 8-Hour Ozone Control Strategy Development
Emission reduction control strategies are a critical element of any regional SIP aimed at meeting the NAAQS. When implemented, control strategies reduce emissions by changing traditional operations and/or activities. They can be regulated through federal, State, or local policies, programs, or projects from a variety of sources where emissions originate.

The four categories of emissions sources are:

  • Area - bakeries, paint shops, dry cleaners, etc.
  • Non-road - construction, aircraft, locomotive, lawn & garden, etc.
  • On-road - cars, trucks, and buses
  • Point - cement and power plants

Emission reduction control strategies are generally selected for implementation based on a variety of reasons including emission reductions, technical feasibility, public acceptability, relative air quality effect, and cost effectiveness.

Control Strategy Review
NCTCOG is currently assisting the Texas Commission on Environmental Quality (TCEQ) on evaluating potential air quality control strategies to be included in the new 8-Hour Ozone SIP. The SIP must be submitted to the US Environmental Protection Agency by June 15, 2007. This SIP must show how the North Central Texas region will come into compliance with the federal air quality standard for 8-Hour Ozone by June 15, 2010.  While control strategies for all emission sources will be considered, focus will be placed on area and non-road sources. The emissions from these sources have proven difficult to quantify and control in the past and so are now a relatively large component of the future emissions inventory.

Master List
A preliminary master list of potential control strategies for the Dallas/Fort Worth nonattainment area was created for public review and comment (see Lists Page). This list was organized by the four source categories listed above and consisted of over 1,000 strategies. Feedback from the public on the acceptability of implementing these strategies in the region was obtained. After comments were received, qualitative analysis was performed on these strategies to determine which will be most promising for our region.

Local Stakeholder Meetings
Local stakeholder meetings were scheduled to gather input on the acceptability, feasibility and effectiveness of these strategies. (See Lists Page for copies of presentations.)

Wednesday, September 21, 2005
Fort Worth City Hall
Council Chambers
Thursday, September 22, 2005
Richardson Civic Center
Richardson Room
Non-Road/On-Road Sources
10:00 a.m. - 12:00 p.m.
Area/Point Sources
10:00 a.m. - 12:00 p.m.
Area/Point Sources
1:00 p.m. - 3:00 p.m.
Non-Road/On-Road Sources
1:00 p.m. - 3:00 p.m.

Short List
After comments were received and qualitative analysis is performed on the Master List, it was further refined to create a Short List (see Lists Page). The short list consisted of approximately 80 strategies, although many of the strategies on the master list were combined into bundled strategies on the short list (e.g. Bicycle and Pedestrian went from 50 individual strategies to 4 collective strategies).

2nd Stakeholder Meeting - Friday, December 16, 2005, 8 - 10 a.m.
Workforce Building - UTA Campus, 140 W. Mitchell Street, Arlington, TX 76010
A 2nd round of stakeholder meetings was scheduled to gather input on the quantitative analysis of these strategies and the potential implications of implementing them in our region.

Recommendations from the North Texas Clean Air Steering Committee
After receiving comments from the 2nd stakeholders meeting, this list of control strategies will go before the North Texas Clean Air Steering Committee (NTCASC) to make recommendations to TCEQ for further modeling, analysis, and potential inclusion in the future SIP. Please note that the quantitative analysis does not mean the NTCASC is recommending these strategies to TCEQ. The analysis is serving two purposes. One, it is a technical study to give the steering committee the tools to make an informed decision regarding what strategies to recommend for implementation in our region. Two, it is assist TCEQ in modeling strategies for potential inclusion in the future SIP.

To view TCEQ’s SIP webpage, please visit:

Final Report
ENVIRON Final Report

SIP Strategies Proposed to TCEQ
The control strategies from the ENVIRON final report were submitted to TCEQ for consideration in the 8-hour SIP.  In the DFW region, TCEQ is responsible for area and point source control measures and NCTCOG is responsible for on-road and some non-road source control measures.  From the list of control strategies, NCTCOG modeled on-road and non-road strategies and committed to implementing those that were feasible for the 8-hour SIP (see Lists Page). These strategies were placed into two categories types called Transportation Control Measures (TCMs) and Voluntary Mobile Emission Reduction Programs (VMEPs).

To view TCEQ's SIP webpage, please visit:

TCEQ Proposed 8-Hour SIP Control Strategies
On November 21, 2006, TCEQ released a draft version of the 8-Hour SIP.  Click here to see the list of proposed control strategies.  A copy of the full proposal can be viewed at

Schedule for SIP adoption:

DRAFT SIP Available
SIP Proposal
Public Comment Period
12/29/2006 thru 02/12/2007
Public Meetings
J. Erik Jonsson Central Library
1515 Young St. (Auditorium)
7 p.m.
Arlington City Hall
101 W. Abrams Street
2 p.m.
Midlothian Civic Center 
1 Community Circle
6 p.m.
Longview Public Library 
222 West Cotton Street
2 p.m.
TCEQ, Building E, Room 201S 
12100 Park 35 Circle
2 p.m.
SIP Adoption
May 2007
Submit SIP to EPA
June 2007
Controls Must be in Place
May 31, 2009

NCTCOG Comments on Proposed 8-Hour Ozone SIP [PDF]
NCTCOG staff submitted comments during the public comment period on the proposed 8-Hour Ozone Attainment Demonstration SIP on behalf of the RTC and the North Texas Clean Air Steering Committee (NTCASC).

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