Controlling On-Road Mobile Source Vehicle Emissions
Information on Stage I and II gasoline vapor recovery programs including equipment, testing, operation requirements, and exemptions. Requirements vary by county as described here.
Topics Under this Category
Diesel fuel blends or additive blends approved by the TCEQ as alternative diesel fuel formulations for Texas Low Emission Diesel (TxLED) may be used by producers to comply with the TxLED regulations.
Answers to common questions regarding the TCEQ's implementation and enforcement of the Texas Low Emission Diesel (TxLED) rules and requirements.
Information and links to Regional low RVP gasoline, Texas Low-Emission Diesel (TxLED), and El Paso fuel programs.
Purpose of Reformulated Gasoline and the Texas counties required to use it.
Information and reporting of vehicles that smoke excessively.
Defines "tampering" and what kinds of vehicle repairs can be made to correct tampering. Texas law prohibits selling or leasing tampered vehicles.
Information relating to the TxLED program, approved alternative diesel fuel formulations, producer/importer registration forms, quarterly reporting forms, alternative emission reduction plan (AERP) forms, and regulatory guidance. The TxLED Program is implemented to reduce emissions of nitrogen oxides from diesel-powered motor vehicles and non-road equipment.
Information about the TxLED Stakeholder Group, including meeting minutes and a schedule of future meetings.
A diesel-fuel producer may use an AERP to demonstrate compliance with the Texas Low Emission Diesel (TxLED) regulations.
All diesel producers and importers that have registered with the Texas Low Emission Diesel (TxLED) program are required to submit a TxLED quarterly report to the TCEQ no later than 45 days after the end of each calendar quarter. Download the necessary TxLED quarterly reporting forms here.
U.S. EPA publication on the history and precautions associated with automobile catalyst systems.
Program overview of the vehicle inspection and maintenance (I/M) program in Texas