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Operational Update on Wyoming County Transformer Mineral Oil Release Response

The West Virginia DEP and Appalachian Power report that containment measures following a transformer mineral oil release at a Wyoming County substation successfully captured escaped material. On February 11, 2026, increased river flow from snowmelt pushed debris and ice downstream, impacting containment structures near the Guyandotte River confluence. Redundant containment systems downstream remain intact and are now serving as primary containment lines. No material has been observed in R.D. Bailey Lake, where multiple containment systems remain active and crews continue monitoring.