Relating to the state ambient air quality standard for benzene.

HB 3872 requires the Texas Commission on Environmental Quality to review and update the state's ambient air quality standard for benzene if monitoring or modeling shows an area is exceeding or likely to exceed the standard. This bill directly affects the commission and areas with benzene pollution concerns, mandating a timely review when exceedances are detected. The key provision is a trigger-based mechanism: data indicating benzene levels above standards automatically initiates the review process. The bill takes effect September 1, 2025, and does not change existing standards but establishes a procedure for updating them based on current data.