ENBRIDGE HOLDINGS (GRAY OAK) LLC

Incident Narrative

"ON DECEMBER 30, 2025, AT APPROXIMATELY 5:13 PM CST, A THIRD-PARTY OPERATOR AT A NEIGHBORING FACILITY OBSERVED PRODUCT ON THE GROUND INSIDE THE ENBRIDGE FENCE LINE AT THE CORPUS CHRISTI VALERO SITE. THE OPERATOR NOTIFIED AN ENBRIDGE CONTRACTOR, WHO IMMEDIATELY INFORMED OPERATIONS. A FIELD TECHNICIAN WAS DISPATCHED TO INVESTIGATE. UPON ARRIVAL AT 6:31 PM CST, THE TECHNICIAN IDENTIFIED A LEAK ORIGINATING FROM THE BODY RELIEF TUBING ON A 2-INCH 600# BODY BLEED LOCATED UPSTREAM OF THE CITGO/VALERO TEE. CONTROL CENTER OPERATIONS (CCO) CONFIRMED THAT THE LINE HAD BEEN SHUT DOWN IN ACCORDANCE WITH THE BATCH SCHEDULE PRIOR TO THE DISCOVERY OF THE RELEASE. THE TECHNICIAN DIRECTED CCO TO BLOCK IN THE AFFECTED PIPING SEGMENT TO ISOLATE THE EQUIPMENT AND BEGAN REQUIRED NOTIFICATIONS. THE INITIAL ESTIMATED RELEASE VOLUME, ASSESSED UNDER LOW LIGHT CONDITIONS, WAS APPROXIMATELY 4 GALLONS. ON DECEMBER 31, 2025, AT 9:54 AM CST, THE RELEASE VOLUME WAS REASSESSED TO APPROXIMATELY 20 GALLONS. AT 10:35 AM CST, THE TEXAS RAILROAD COMMISSION WAS NOTIFIED OF THE RELEASE (ICIN 3470). AT 5:00 PM CST ON DECEMBER 31, 2025, THE ANTICIPATED CLEANUP COSTS EXCEEDED $50,000, AND A NOTIFICATION TO THE NRC WAS MADE AT 5:07 PM CST (NRC # 1451747). THE 48-HOUR NRC UPDATE SUBMITTED ON JANUARY 2, 2026, AT 2:53 PM CST (NRC # 1451839) REFLECTED THE REVISED ESTIMATED RELEASE VOLUME OF 2 BARRELS. AN INTERNAL EVENT ANALYSIS IS ONGOING TO DETERMINE THE ROOT CAUSE. A SUPPLEMENTAL REPORT WILL BE SUBMITTED UPON COMPLETION OF THE ANALYSIS. THE AFFECTED EQUIPMENT HAS BEEN CLEANED, AND ALL CONTAMINATED SOIL HAS BEEN REMOVED FROM THE RELEASE SITE AND PROPERLY DISPOSED OF AT A DESIGNATED DISPOSAL FACILITY. ALL VALVES OF THIS TYPE HAVE EITHER BEEN RECONFIGURED WITHOUT THE TUBING COMPONENT OR REMOVED FROM THE SYSTEM."