Ethylene oxide is primarily produced in Texas and Louisiana with sites in Texas accounting for nearly half of all emitted ethylene oxide in the United States. Because ethylene oxide is emitted in Texas and has been determined by other agencies to be a carcinogen, the Texas Commission on Environmental Quality (TCEQ) undertook a carcinogenic dose-response assessment for use in TCEQ’s remediation and air permitting programs. The TCEQ assessed the carcinogenic hazards of ethylene oxide and derived a chronic inhalation unit risk factor (URF) in its 2020 Ethylene Oxide Carcinogenic Dose-Response Assessment Development Support Document (TCEQ DSD).
