Energy & environment · 28/11/1994Updated: 10/18/2026 · 1 min read

EPA Conditionally Approves Texas Petitions to Waive NOx Controls for DFW and El Paso Ozone Nonattainment Areas

The US Environmental Protection Agency (EPA) has conditionally approved two petitions from the State of Texas to exempt the Dallas-Fort Worth and El Paso ozone nonattainment areas from certain nitrogen oxide (NOx) control requirements under the Clean Air Act (CAA), citing that these areas would meet national air quality standards without the additional controls, which are primarily needed to address emissions from Mexico.