Relating to establishment of maximum allowable ground level concentrations of hydrogen sulfide by the Texas Commission on Environmental Quality.

This bill requires the Texas Commission on Environmental Quality (TCEQ) to establish legally enforceable limits for hydrogen sulfide (H₂S) in outdoor air. It sets two specific concentration levels: 0.04 parts per million (ppm) averaged over 30 minutes for areas used for homes, recreation, businesses, or shopping, and 0.06 ppm for agricultural or other non-residential areas. The TCEQ must review these limits every five years based on the latest health research and adopt final rules by September 1, 2026. The law directly affects communities near industrial facilities that emit H₂S, such as oil and gas operations, by setting new air quality standards for public health protection.