• Feb 27, 2024, 14:44 PM

Ethylene Oxide Update #58: February 27, 2024

  • Quarter 4 stack monitoring and fugitive emissions results received by IEPA;

  • Vantage finishes 2023 at 20.21 pounds released

  • 81.82% under IEPA permitted annual emission

The Illinois Environmental Protection Agency (IEPA) has updated its website to include the 2023 Q4 data related to Vantage's permit. The results indicate Vantage concluded 2023 at 20.21 pounds (18.38% of permitted annual total) of ethylene oxide (EtO) emissions, of which 16.10 pounds (26.84% of permitted annual total) were fugitive emissions. In 2020 the total amount released was 62.44lbs, in 2021 the total amount released was 21.18lbs and in 2022 the total amount released was 47.81lbs. Public Act 101-0023 and Vantage's Construction Permit limit the facility to 110 pounds of emissions annually of which no more than 60 pounds can be fugitive emissions.

The Q4 submission noted "No deviations (i.e., missed daily calibrations or other events) during the quarterly period." It also noted, "There were no leaking components in all of Q4 2023."

The fourth quarter report is now available on the IEPA website here:

Additional information on EtO from the Illinois EPA is available at:

To keep up to date on Ethylene Oxide in Gurnee, visit