PLAINS PIPELINE, L.P.

Incident Narrative

APPROXIMATELY 173 BBLS OF CRUDE OIL WERE RELEASED, WITHIN A VAULT, AS A RESULT OF A PINHOLE LEAK IN THE 6 O'CLOCK POSITION OF PLAINS PIPELINE. AFTER FILLING THE VAULT, THE OIL CROSSED A STREET VIA THE STORM DRAIN SYSTEM. IT WAS DETERMINED THAT APPROXIMATELY 1 BBL OF OIL FLOWED INTO THE SUBSURFACE CONCRETE STORM DRAIN. THE STORM DRAIN WAS DRY AT THE TIME OF THE INCIDENT, THEREFORE, NO WATERS OF THE US WERE IMPACTED. CLEAN-UP CREWS ARRIVED ON-SCENE AND IMMEDIATELY BUILT A BERM TO BLOCK THE OIL, BEFORE CLEANING THE STORM DRAIN, STREET AND VAULT. PLAINS INSTALLED A BLIND FLANGE AND THE LINE WAS RETURNED TO SERVICE. THE ROOT CAUSE OF THE RELEASE IS STILL UNDER INVESTIGATION. A SUPPLEMENTAL REPORT WILL BE SUBMITTED ONCE THE ANALYSIS IS COMPLETE. THE NATIONAL RESPONSE CENTER (NRC) WAS NOTIFIED WHEN PLAINS DISCOVERED OIL HAD REACHED THE STORM DRAIN. THE NRC ASSIGNED REPORT NUMBER 1150769. SUPPLEMENTAL NARRATIVE: THE METALLURGICAL EXAMINATION DETERMINED THE PIN HOLE WAS A RESULT OF AQUEOUS INTERNAL CORROSION FROM A COMBINATION OF CO2 AND SALTWATER THAT COLLECTED IN A LOW POINT OF THE LINE. IN ADDITION TO REPLACING THIS SECTION WITH INTERNALLY EPOXY-COATED PIPE, A NEW FLANGE AND FITTING, PLAINS WILL PERFORM REGULAR DELIVERIES THROUGH THE EPTC FACILITY TO ASSIST WITH FLUSHING THE LINE.