Sterigenics Response to IL EPA Seal Order Chicago – February 15, 2019 The Illinois EPA’s actions to suspend operations at the Sterigenics Willowbrook facility are indefensible. Sterigenics Willowbrook has consistently complied with all state permits and regulations and Sterigenics has been in ongoing cooperation with the Illinois EPA and other officials regarding the safe operation of the facility. Unilaterally preventing a business that is operating in compliance with all state permits and regulations from carrying out its vital function sets a dangerous precedent. The Illinois EPA’s decision will place the health and lives of thousands of patients who rely on the critical medical products sterilized at Willowbrook at risk. In addition, we are in the process of reviewing the air monitoring results released today from the Village of Willowbrook. These results are inconsistent with all prior monitoring results. We will be analyzing these results closely to understand the cause for such inconsistency from all prior samples taken to date. Sterigenics will comply with the order and will take all legal actions necessary to reverse this decision. 2015 Spring Road Ste 650 Oak Brook, IL 60523 630.928.1700 sterigenics.com