COLONIAL PIPELINE CO

Incident Narrative

AT APPROXIMATELY 11:00 ON 8/25/14, A TECHNICIAN ARRIVED AT WELSH STATION TO RESPOND TO A COMMUNICATIONS FAILURE. THE TECHNICIAN OBSERVED A STAIN ON THE GROUND ABOVE THE LINE 2 UNIT 2 CHECK VALVE. INTERNAL NOTIFICATIONS WERE MADE AND A CONTRACT CREW WAS CALLED IN TO EXCAVATE THE AREA FOR THE SUSPECTED LEAK. THE CONTRACTOR ARRIVED ON SITE AT 11:45 AND THE STATION WAS SHUT DOWN AND ISOLATED BY 12:10. THE LEAK WAS DETERMINED TO BE ORIGINATING FROM A FLANGE ASSOCIATED WITH THE UNIT CHECK VALVE SPRING CAN. THE LEAK SOURCE WAS POSITIVELY IDENTIFIED AND STOPPED BY 13:30. REPAIRS WERE COMPLETED ON THE CHECK VALVE AND THE STATION WAS RESTARTED AT 19:37. THE CAUSE OF THE RELEASE WAS A FAILED GASKET AT THE FLANGE LOCATION ON THE CHECK VALVE SPRING CAN. THE SOFT GOODS ON THE OTHER SIDE OF THE CHECK VALVE WERE REPLACED ON 8/26/14. ALL RELEASED PRODUCT WAS CONTAINED ON COMPANY PROPERTY IN THE IMMEDIATE AREA. CONTAMINATED SOIL EXCAVATION WAS COMPLETED ON 8/27/14. AN ELECTRONIC NOTIFICATION WAS MADE TO THE LOUISIANA DEQ/SPOC WITHIN 24 HOURS OF THE INCIDENT AND A WRITTEN FOLLOW UP REPORT WAS FILED WITHIN 7 DAYS PER APPLICABLE STATE REGULATIONS.