Croda to Restart Ethylene Oxide Plant for Emissions Test, Then Shut Down

The Delaware Department of Natural Resources and Environmental Control (DNREC) announced Friday that it has authorized the ethylene oxide plant at the Croda Atlas Point facility near New Castle to restart solely for the purpose of conducting an emissions test, then will shut down and await a department decision on a path forward. The EO plant had a failed emissions test, known as a “stack test” in September that led to a recently issued Notice of Violation (NOV) for air emission and equipment violations associated.

The EO plant will start up the first week of January and the test will be conducted the second week of January, as the plant must be fully operational for the test. Operation for the purpose of the testing will not include the hotwell or use of the unpermitted emission source. During the operation, the company must monitor water circulation and pressure through the scrubber. The tanks will also be monitored for pressure and temperature. These operational parameters will be reported to DNREC. During the test, DNREC staff will be on site and ethylene oxide levels and scrubber performance will be known in real time. The operational data will also be collected.

The EO plant will shut down following the completion of the testing. DNREC continues to work from its regulatory purview to determine the path forward for Croda to resume operations at the EO plant.

A public information session was held virtually with about 75 participants on November 19 to answer questions and take comments about Croda’s operations and about the NOV. DNREC on Friday released a list of questions that came up at the session with responses for the community, available at

The NOV issued on November 11, 2020 can be found at

The Delaware Department of Natural Resources and Environmental Control protects and manages the state’s natural resources, protects public health, provides outdoor recreational opportunities and educates Delawareans about the environment. The Division of Air Quality monitors and regulates all emissions to the air. For more information, visit the website and connect with DNREC on Facebook, Twitter or LinkedIn.

Media Contacts: Nikki Lavoie,, Michael Globetti,