TEXOMA CRUDE OIL PIPELINE CO., LLC

Incident Narrative

FINAL SUPPLEMENTAL REPORT SUBMITTED 08-08-2019, BASED ON CLARIFICATIONS REQUESTED FROM PHMSA. UPDATED REPORT INCLUDED THE FOLLOWING CHANGES: +A.4 - CHANGED TIME OF EVENT FROM DATE/TIME TEXOMA WAS NOTIFIED TO DATE/TIME INVESTIGATION DETERMINED THE LEAK STARTED. THIS ESTIMATED TIME IS 03-07-2019 AT 05:15, THE TIME THE SCHEDULED SHUT DOWN OF THE PIPELINE OCCURRED. +A.14 - CHANGED TO YES. ALTHOUGH LINE WAS SHUT DOWN DUE TO PLANNED DELIVERY BEING COMPLETE, THE LINE REMAINS SHUT DOWN DUE TO THE LEAK. PIPELINE WILL BE RESTARTED UPON SUCCESSFUL SMART TOOL RUN AND ANY NEEDED REPAIRS OR REPLACEMENTS ARE COMPLETE. +E.1 - CHANGED TO 94.0 PSI. THIS IS THE CALCULATED HEAD PRESSURE THAT WOULD HAVE BEEN ON THE POINT OF ORIGIN FOLLOWING PIPELINE SHUTDOWN, BASED UPON ELEVATIONS. FINAL SUPPLEMENTAL REPORT SUBMITTED 08-05-2019, DUE TO CLEAN-UP COMPLETE. COPY OF CORRECTIVE ACTION REPORT (CAR) SENT TO U.S. EPA AND OCC. UPDATED FINAL ANTICIPATED COSTS IN PART D. NO OTHER CHANGES MADE ON THIS REPORT. C29 PIPELINE WAS SHUT DOWN ON 03-07-2019 AT 05:15 DUE TO PIPELINE SCHEDULED DELIVERY BEING COMPLETE. THIS PIPELINE IS ""TURNED OFF AND TURNED BACK ON"" AS NEEDED BASED ON DELIVERY REQUIREMENTS. C29 WAS STILL SHUT DOWN (FOR > 2 DAYS) WHEN TCOP WAS NOTIFIED ON 03-09-2019 AT 14:20 BY OCC (OIL AND GAS DIVISION) THAT A LANDOWNER DISCOVERED WHAT APPEARED TO BE A LARGE OIL RELEASE NEAR THE PROPERTY. TCOP CONTROL CENTER NOTIFIED ON CALL EMPLOYEE TO GO TO LOCATION TO VERIFY IF THERE WAS A RELEASE AND IF THE INVOLVE PIPELINE WAS TCOPS. EMPLOYEE VERIFIED LEAK AND OWNERSHIP OF THE LINE AT 15:20; EMERGENCY RESPONSE PROCEDURES WERE ACTIVATED. PIPELINE WAS ALREADY SHUT DOWN. NRC WAS NOTIFIED OF THE EVENT AT 16:02. UP AND DOWNSTREAM VALVES WERE CLOSED. CONTAINMENT AND REMOVAL OF RELEASED CRUDE OIL WAS SET UP. AFTER RELEASE AREA WAS CLEARED OF HAZARDS, EXCAVATION OF THE AREA REVEALED THE AFFECTED PIPE. AN AREA OF THE AFFECTED PIPE WAS REMOVED, PLEDCO CLAMP WAS APPLIED. PIPELINE HAS REMAINED SHUT DOWN UNTIL A HYDROSTATIC TEST OF THE PIPELINE CAN BE ACCOMPLISHED. INVESTIGATION DETERMINED INTERNAL CORROSION CAUSED THE PIPE TO DEVELOP A HOLE WHICH RESULTED IN THE RELEASE. UPDATED NRC ON 03-27-2019 AT 21:09 TO UPDATE SPILL VOLUME TO 1250 BARRELS, 200 BARRELS IN WATER. NRC UPDATE #1239690 ON 03-27-2019. TOTAL OIL VOLUME RECOVERED AS OF 04-24-2019 IS IS APPROXIMATELY 1,077 BARRELS OF OIL. CLEAN UP IS ONGOING. PIPELINE HAS REMAINED SHUT DOWN. SUPPLEMENTAL REPORT UPDATE ON 04-25-2019 INCLUDED THE FOLLOWING CHANGES: +A.7 - CHANGED TIME TO LOCAL (CENTRAL) TIME ZONE (NOT EASTERN TIME). +A.9 - CHANGED VOLUME OF COMMODITY RELEASED FROM 500 BBLS TO 1,250 DUE TO UPDATED FIGURES (AS REPORTED IN UPDATED NRC REPORT). +A.11 - CHANGED VOLUME OF COMMODITY RECOVERED FROM 500 BBLS TO 1,077 DUE TO UPDATED FIGURES. +A.18.A - CHANGED TIME OF OPERATOR IDENTIFIED ACCIDENT TO 14:20, TIME TCOP WAS NOTIFIED OF POSSIBLE OIL RELEASE ON THE GROUND CALLED INTO CONTROL CENTER. +A.18.B - CHANGED TIME LOCAL OPERATOR RESOURCES ON SITE TO 15:20, TIME TCOP PERSONNEL ARRIVED ON SITE. +C.1 - CHANGED FROM INTERSTATE TO INTRASTATE, DUE TO PREVIOUS INADVERTENT ENTRY. +C.3.A - CHANGED NOMINAL DIAMETER OF PIPE FROM 8.625"" TO 8"", DUE TO NOMINAL PIPE SIZE NEEDED. +C.6 - CHANGED FROM MECHANICAL PUNCTURE TO LEAK (PINHOLE), DUE TO BETTER DESCRIPTION. +H - UPDATED NARRATIVE DESCRIPTION TO CLARIFY TIMES, DATES AND CHANGES MADE TO PREVIOUS REPORT. +I - DATE CHANGED FROM 04-10-2019 TO 04-25-2019, DUE TO UPDATED SUPPLEMENTAL REPORT. SUPPLEMENTAL REPORT OF 04-25-2019 DID NOT CHANGE ANY OTHER PARTS. SPECIFIC PREVIOUS CLARIFICATIONS: +A.14 - VERIFIED PIPELINE WAS NOT SHUT DOWN DUE TO THE ACCIDENT, BECAUSE IT WAS ALREADY SHUT DOWN AS CLARIFIED ABOVE IN PART H. +E.7 - VERIFIED ESTIMATED PRESSURE AT THE TIME OF ACCIDENT.