COLONIAL PIPELINE CO

Incident Narrative

A CORROSION CONTRACTOR PERFORMING TANK INSPECTIONS AT EPES STATION WHILE ON TOP OF THE TANK NOTICED WHAT APPEARED TO BE A PRODUCT SHEEN ON THE STATION RETENTION POND AND REPORTED THE EVENT AT 10:30 CST. COLONIAL PERSONNEL WERE PROMPTLY NOTIFIED AND SENT TO THE FACILITY TO INVESTIGATE. COLONIAL PERSONNEL ARRIVED ON SITE AT 12:05 AND AT APPROXIMATELY 12:15 CST A RELEASE OF DIESEL PRODUCT WAS CONFIRMED. THE LINE-2 UNIT-4 CHECK VALVE STEM SEAL LEAK DETECTION BOX HAD OVERFLOWED, BUT ON DISCOVERY OF THE INCIDENT THE STEM SEAL LEAK WAS ONLY A SMALL TRICKLE AND BEING CONTROLLED AND CONTAINED WITHIN THE SYSTEM INSTALLED AND DESIGNED FOR THAT PURPOSE. AT 12:30 CST NOTIFICATIONS TO THE OPERATIONS MANAGER AND CONTROL CENTER WERE COMPLETED. AFTER NOTIFICATIONS AND DISCUSSIONS OF THE KNOWN EVENT DETAILS BETWEEN THE OPERATIONS MANAGER, DISTRICT ENVIRONMENTAL MANAGER AND THE DISTRICT DIRECTOR OF OPERATIONS, THE LEAD CONTROLLER WAS ADVISED TO FILE A REPORT WITH THE NRC BECAUSE OF THE FACILITY RETENTION POND BEING CONSIDERED 'WATERS OF THE US'. FURTHER INVESTIGATION OF THE EVENT CONFIRMED AN INCREASED LEVEL OF PRODUCT IN THE FACILITY SUMP, PRODUCT IN OIL/WATER SEPARATOR, SEPARATOR INLET VALVE ACCESS WELL AND FACILITY RETENTION POND. REPAIRS TO THE LINE-2 UNIT-4 CHECK VALVE STEM SEAL WERE COMPLETED ON 3-17-2016. ALL FREE PRODUCT WAS PICKED UP OR CONTAINED ON 3-17-2016 WITH FINAL CLEAN-UP COMPLETED ON 3-25-16.