

Federal Register notice: U.S. Environmental Protection Agency approval of parts of the TCEQ's March 9, 2005, revision to the TxLED rules.
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 no more 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.
Title 30 Texas Administrative Code (30 TAC) 114.6 — Low Emission Fuel Definitions
30 TAC 114.312–114.319 — Low Emission Diesel
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.
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.
Publication EPA420-P-01-001 (July 2001) describes the Unified Model.
Relating to additive-based TxLED alternative diesel fuel formulations.
For more information, please contact Michael Regan, Air Quality Planning Section, at 512-239-2988 or email aqp@tceq.texas.gov and specify “TxLED Program” in the subject line.
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