PLAINS PIPELINE, L.P.

Incident Narrative

APPROXIMATELY 3 BARRELS OF CRUDE OIL WERE RELEASED FROM STATION PIPING ASSOCIATED WITH TANK 125202 AT MIDLAND SOUTH STATION. THE DATE AND TIME OF THE RELEASE (PART A Q4) IS INDICATIVE OF THE EARLIEST POSSIBLE TIME THE RELEASE COULD HAVE STARTED AS IT WAS THE LAST TIME THE INCIDENT LOCATION HAD BEEN VISITED AND CONFIRMED TO BE NO RELEASE OF CRUDE OIL. NRC WAS CONTACTED ON THE BASIS OF ESTIMATED COSTS EXCEEDING $50,000; THE 48-HOUR FOLLOW-UP REPORT WILL BE PROVIDED WITHIN THE SUPPLEMENTAL REPORT. ADDITIONALLY, A SUPPLEMENTAL REPORT WILL BE SUBMITTED PENDING FURTHER INVESTIGATION INTO THE CAUSE OF THE INCIDENT AND PREVENTATIVE MEASURES. SUPPLEMENTAL NARRATIVE (1): UPDATED INTRASTATE TO INTERSTATE. ADDED THE 48-HOUR FOLLOW-UP NRC NUMBER. A SUPPLEMENTAL REPORT WILL BE SUBMITTED PENDING FURTHER INVESTIGATION INTO THE CAUSE OF THE INCIDENT AND PREVENTATIVE MEASURES. SUPPLEMENTAL NARRATIVE (2): THIS STATION IS CONSIDERED TO BE A PART OF THE BASIN SYSTEM IN NPMS. THE CAUSE OF THE RELEASE IS ATTRIBUTED TO INTERNAL CORROSION AS A RESULT OF LOW-FLOW/NO-FLOW CONDITIONS WITHIN THE PIPE. TO IMMEDIATELY STOP THE RELEASE, A CLAMP WAS INSTALLED. TO PREVENT FUTURE INCIDENTS, THE LINE WAS PURGED, ISOLATED, AND A NEW SECTION OF PIPE WAS INSTALLED ABOVEGROUND TO IMPROVE FLOW VELOCITY.