PLAINS PIPELINE, L.P.

Incident Narrative

APPROXIMATELY 22.2 BARRELS OF CRUDE OIL WERE RELEASED WITHIN STATION BOUNDARIES FROM A TEMPORARY PORTABLE STORAGE TANK AT SALT CREEK STATION. THE DATE AND TIME OF THE RELEASE (02/25/2020 AT 15:30) IS INDICATIVE OF THE EARLIEST TIME THE RELEASE COULD HAVE STARTED, AS IT WAS LAST TIME THE STATION WAS VISITED AND CONFIRMED THAT NO CRUDE OIL WAS BEING RELEASED. DURING ROUTINE PIPELINE PURGING OPERATIONS, PAA TEMPORARILY CONNECTED A PORTABLE STORAGE TANK TO THE FACILITY TANK PIPING MANIFOLD. AFTER THE PURGE, THE VALVE TO THE TEMPORARY PIPING FROM THE MANIFOLD TO THE PORTABLE STORAGE TANK WAS NOT CLOSED. CRUDE OIL FROM ONE OF THE FACILITY TANKS LEAKED PAST A VALVE ON THE TANK FACILITY PIPING MANIFOLD, THROUGH THE OPEN VALVE TO THE TEMPORARY PIPING, AND INTO THE PORTABLE STORAGE TANK; RESULTING IN THE OVERFILL OF THE PORTABLE STORAGE TANK. IT WAS DISCOVERED THAT DEBRIS OR ICE MAY HAVE CAUSED THE TANK FACILITY MANIFOLD VALVE TO NOT CLOSE FULLY, ALLOWING A LEAK PAST THE VALVE. THE VALVE HAS SINCE BEEN TESTED AND EXERCISED SUCCESSFULLY WITHOUT ANY LEAKAGE. TO PREVENT FUTURE RELEASES, PAA HAS RETRAINED THE EMPLOYEE INVOLVED WITH THE INCIDENT.