PLAINS PIPELINE, L.P.

Incident Narrative

OPERATOR WAS PERFORMING ROUNDS WHEN HE NOTICED OIL LEAKING FROM PIPING BETWEEN THE TANK AND BOOSTER PUMPS. ALL OIL WAS CONTAINED WITHIN SECONDARY CONTAINMENT OF THE FACILITY. BASED ON THE SIZE OF THE LEAK, IT HAS BEEN ESTIMATED THROUGH CALCULATIONS THAT THE EARLIEST TIME THE LEAK COULD HAVE STARTED WAS 12/27/2018 AT 17:52. THE CAUSE OF THE INTERNAL CORROSION IS STILL UNDER INVESTIGATION, AND A SUPPLEMENTAL REPORT WILL BE SUBMITTED AFTER THIRD PARTY ANALYSIS. SUPPLEMENTAL NARRATIVE: AN UPDATE WAS MADE TO THE EARLIEST TIME THE RELEASE COULD HAVE STARTED (12/27/2018 AT 22:33). THIS UPDATE IS BASED ON A REVISION MADE TO THE OPERATING PRESSURE IN THE PAA RELEASE TIME CALCULATOR TO REFLECT THE PRESSURE OF 69 PSI AT THE POINT AND TIME OF THE INCIDENT. THE NRC WAS LATER CONTACTED ON 01/25/2019 AFTER AN ACCOUNTING REVIEW WAS CONDUCTED, AND IT WAS ESTIMATED THAT CLEANUP COSTS WOULD EXCEED $50,000. THE CAUSE OF CORROSION, BASED ON PRODUCT ANALYSIS IN COMBINATION WITH VISUAL EXAMINATION, IS DETERMINED TO BE MICROBIOLOGICALLY INDUCED CORROSION IN A PIPE JOINT THAT HAD A WATER DROP OUT PRESENT. THE TANK LINE HAS BEEN REPLACED WITH INTERNALLY COATED PIPE TO PREVENT FUTURE RELEASES.