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Mobile Source

Reducing emissions from vehicles, construction equipment, boats, lawn equipment and various non-stationary sources of air pollution.
Texas Low Emission Diesel (TxLED) Program

Information relating to the Texas Low Emission Diesel (TxLED) program, approved TxLED alternative diesel fuel formulations, producer / importer registration forms, quarterly reporting forms, alternative emission reduction plan (AERP) forms, and regulatory guidance.

Transportation Conformity

Information about transportation conformity in Texas, including applicable state implementation plan (SIP) and rule revisions, and information for areas with transportation conformity requirements