COLONIAL PIPELINE CO

Incident Narrative

ON AUGUST 30, 2012, AT APPROXIMATELY 10:45 A.M. CDT PRODUCT WAS OBSERVED IN THE AREA OF THE PORT ARTHUR AND EXXON MOBIL SHIPPER VALVES ON LINE 02 AT HEBERT STATION. THE OPERATIONS MANAGER AND PROJECT MANAGER WERE NOTIFIED AT APPROX. 11:00 AM. CONTRACT CREWS WORKED UNTIL APPROX. 11:30 PM TO IDENTIFY THE SOURCE OF THE RELEASE. NO SOURCE OR EVIDENCE OF AN ACTIVE RELEASE COULD BE IDENTIFIED AND WORK WAS SUSPENDED UNTIL THE NEXT DAY. WORK BEGAN AGAIN AT 7:00 AM ON 8/31/12. AT 12:20 P.M. 30 INCH FLANGES ON THE DOWNSTREAM SIDE OF BOTH THE PORT ARTHUR AND EXXON MOBIL SHIPPER VALVES WERE DETERMINED TO BE THE SOURCE OF THE RELEASE. THE GASKETS, STUDS AND NUTS ON THE FLANGES WERE REPLACED, AND THE SYSTEM WAS RETURNED TO NORMAL OPERATION AT APPROX. 6:00 AM ON SATURDAY, SEPTEMBER 1, 2012. FLANGES WERE MONITORED VIA VISUAL INSPECTION FOR THE NEXT SEVERAL DAYS TO ENSURE THE REPAIRS WERE SUCCESSFUL. 50 GALLONS WERE RECOVERED AND IS LESS THAN THE TEXAS CEQ REPORTABLE THRESHOLD OF 5 BBLS IN A 24 HOUR PERIOD, THEREFORE, NO REPORTS ARE REQURED TO TEXAS. SINCE THERE WERE NO INJURIES, FIRE OR EXPLOSIONS, OR IMPACTS TO WATERS OF THE U.S., AN NRC REPORT IS NOT REQUIRED. THE FLANGED CONNECTIONS WERE MONITORED FOR APPROXIMATELY 5 WEEKS AND THE EXCAVATION WAS BACKFILLED IN OCTOBER 2012.