Information about Sterigenics Willowbrook facility has been moved to the Illinois EPA’s Ethylene Oxide webpage, please go to the below link
https://www2.illinois.gov/epa/topics/community-relations/sites/ethylene-oxide/Pages/default.aspx

Documents & Links

Consent Order Overview and Frequently Asked Questions

Executed Sterigenics Consent Order

Memorandum in Support of Motion to Enter Consent Order

Joint Motion to Enter Consent Order

Illinois EPA Inspection Report - February 25, 2019

Illinois EPA Inspection Report - March 12, 2019

Illinois EPA Inspection Report - March 19, 2019

Illinois EPA Inspection Report - March 26, 2019

Illinois EPA Inspection Report - March 29, 2019

Illinois EPA Inspection Report - April 5, 2019

Illinois EPA Inspection Report - April 16, 2019

Illinois EPA Inspection Report - April 24, 2019

Illinois EPA Inspection Report - April 26, 2019

Illinois EPA Inspection Report - May 8, 2019

Illinois EPA Inspection Report - May 14, 2019

Illinois EPA Inspection Report - May 21, 2019

Illinois EPA Inspection Report - May 24, 2019

Illinois EPA Inspection Report - June 6, 2019

Illinois EPA Inspection Report - June 14, 2019

Illinois EPA Inspection Report - June 21, 2019

Illinois EPA Inspection Report - July 3, 2019

Illinois EPA Inspection Report - July 12, 2019

Illinois EPA Inspection Report - July 17, 2019

USEPA's Outdoor Air Monitoring in Willowbrook webpage

Transmittal Letter, Willowbrook I Stack Test Report, and Willowbrook II Stack Test Report

Illinois EPA Letter to Sterigenics, September 25, 2018

Illinois EPA Letter to USEPA, September 25, 2018

USEPA Response to Director Messina, September 27, 2018

Sterigenics' letter transmitting stack test results to Illinois EPA, September 27, 2018

USEPA's Sterigenics website: https://www.epa.gov/il/sterigenics-willowbrook-facility

USEPA information on ethylene oxide: https://www.epa.gov/hazardous-air-pollutants-ethylene-oxide

USEPA frequently asked question on ethylene oxide: https://www.epa.gov/hazardous-air-pollutants-ethylene-oxide/frequent-questions-ethylene-oxide

ATSDR factsheet on ethylene oxide: https://www.atsdr.cdc.gov/toxfaqs/tfacts137.pdf

OSHA factsheet on ethylene oxide: https://www.osha.gov/OshDoc/data_General_Facts/ethylene-oxide-factsheet.pdf

Clean Air Act Permit Program Permit (CAAPP) – the operating permit for Sterigenics

Construction Permit #18060020 – the construction permit to control emissions from the back vents

Illinois EPA’s 2016 Inspection Report – the last facility inspection report

2013 Violation Notice & resulting 2015 Consent Order

Annual Emission Reports 1995 - 2017