U.S. Steel Midwest Oil Sheen

October 28, 2021

• US Steel response to IDEM’s Oct. 18, 2021 Inspection Summary/Enforcement Referral

October 18, 2021

• Inspection Summary/Enforcement Referral

October 11, 2021

• U.S. Steel’s 5-Day Letter

October 8, 2021

As of yesterday afternoon, the oil that caused the sheen was no longer being discharged from the outfall at US Steel. Booms contained most of the oil, but some sheen was observed outside the boomed area. IDEM continues to investigate the cause of this incident and the potential repercussions under the recently entered consent decree and state agreed order.

October 7, 2021

IDEM is aware of the reports of a sheen at U.S. Steel-Midwest and is investigating.

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Additional Resources:

• U.S. EPA Press Release and link to U.S. Steel’s Consent Decree
• IDEM Agreed Order