Texas Low Emission Diesel (TxLED) Program
The TxLED regulations apply to all diesel fuel sold or supplied as fuel for motor vehicles and non-road equipment operating in 110 central and eastern Texas counties.
TxLED must contain less than 10 percent aromatic hydrocarbons by volume and must have a cetane number of 48 or greater, or else must use an approved alternative formulation or comply with the designated alternative limits.
Diesel producers may also use an approved alternative emission-reduction plan to comply with the TxLED regulations.
Diesel fuel producers and importers that produce or import diesel fuel for use in the affected 110 counties are required to register with the TCEQ and submit quarterly reports.
TxLED registration forms and TxLED quarterly reporting forms are supplied by the TCEQ.
More Questions? Contact the TxLED Program!
For more information, please contact Morris Brown, Air Quality Planning Section, at 512-239-1438 or email firstname.lastname@example.org and specify “TxLED Program” in the subject line.
Sign up for e-mail updates on matters relating to the TxLED program.
You will receive e-mails whenever we add new information to this TxLED Stakeholders Web page or to the main TxLED Program Web page. Click on the link below and do the following:
- Enter and confirm your e-mail address.
- From the list of choices, look under Air Quality and select “Texas Low Emission Diesel (TxLED) Program.”
- Select other subscriptions if you wish, then click “Save.”
- The system will then send you a confirmation e-mail to accept.
You can unsubscribe, change your e-mail address, or choose additional options from the link on this page or from the update e-mails you receive.
Information about the TxLED Stakeholder Group, including meeting minutes and a schedule of future meetings.
Publication EPA420-P-01-001 (July 2001) describes the Unified Model.
Federal Register notice: U.S. Environmental Protection Agency approval of parts of the TCEQ's March 9, 2005, revision to the TxLED rules.
Federal Register notice: U.S. Environmental Protection Agency approval of the TCEQ's April 26, 2006, May 9, 2007, and May 23, 2007, revisions to the TxLED rules.
TCEQ Memorandum: Tank and Material Handling Authorization for Required Diesel Additives; relating to additive-based TxLED alternative diesel fuel formulations.
A campaign by the U.S. Environmental Protection Agency to reduce diesel emissions by working with manufacturers, fleet operators, air quality professionals, environmental and community organizations, and state and local officials.
Topics Under this Category
Information and links to documents about the regulation to control emissions from heavy-duty diesel construction equipment during the morning hours.
Information and links to documents about the regulation to control emissions from large off-road spark-ignition engines in Texas.
Revision to the State Implementation Plan for vehicle inspection and maintenance adopted on April 19, 2000.
Revision to the State Implementation Plan for vehicle inspection and maintenance adopted on December 4, 2002.
Revision to the State Implementation Plan for vehicle inspection and maintenance adopted on October 8, 2003.
Revision to the State Implementation Plan for Vehicle Inspection/Maintenance adopted on December 6, 2000.
A substitution approved by the TCEQ for a measure originally adopted in the December 2000 SIP for the Houston-Galveston-Brazoria area.
Information and links to documents about measures to control emissions from vehicles.
Information and links to documents about the vehicle I/M program under the State Implementation Plan (SIP) for air quality.
Information and links to documents about the Voluntary Mobile Emissions Reduction Program (VMEP).