This report documents in detail the steps taken to estimate risk from ethylene oxide emissions from the Sterigenics facility in Willowbrook, Ill. The conclusions in the report were presented at a public meeting in Burr Ridge, Illinois on May 29, 2019.

• Risk Assessment Report for the Sterigenics Facility in Willowbrook, IL (PDF)(127 pp, 11 MB)
• Summary of U.S. EPA's Risk Assessment of EtO Emissions in Willowbrook, IL (PDF)(3 pp, 514 K)
• Appendix 1 to the Risk Assessment Report for the Sterigenics Facility in Willowbrook, IL (PDF)(12 pp, 471 K)
• Appendix 2 to the Risk Assessment Report for the Sterigenics Facility in Willowbrook, IL (PDF)(40 pp, 609 K)
• Appendix 3 to the Risk Assessment Report for the Sterigenics Facility in Willowbrook, IL (PDF)(18 pp, 1 MB)
• Appendix 4 to the Risk Assessment Report for the Sterigenics Facility in Willowbrook, IL (PDF)(16 pp, 7 MB)