COLONIAL PIPELINE CO

Incident Narrative

AT APPROXIMATELY 18:30, THE OUTSIDE TANK FARM CONTROLLER PERFORMING A STATION CHECK DISCOVERED A STAIN IN THE GRAVEL NEAR THE LINE 14 CONTROL VALVE AND GPE CABINET. UPON FURTHER INVESTIGATION, HE FOUND PRODUCT IN THE 4 INSTRUMENT CONNECTION ACCESS WELLS AROUND THE LINE 14 CONTROL VALVE GPE CABINET. IMMEDIATE NOTIFICATION TO CONTROL CENTER WAS MADE AND PROCEDURE EOP-CPC-K01 WAS ENTERED. THE LEAK WAS REPORTED TO THE OPERATIONS MANAGER AND DIRECTOR OF OPERATIONS. LINE 14 WAS IMMEDIATELY SHUT DOWN AND ISOLATED UPSTREAM AT THE METER RUN AND DOWNSTREAM AT THE OUTGOING TRAP. LINE 14 CONTROL VALVE WAS EXCAVATED AND LEAK WAS FOUND COMING FROM A PINHOLE IN THE 3/4"" NIPPLE AT THE BOTTOM OF THE MASON-NEILEN CONTROL VALVE. THE LINE WAS DRAINED UP AND THE NIPPLE WAS REPLACED. THE LINE WAS RESTARED AT APPROXIMATELY 10:05 ON AUGUST 18TH. FINAL CLEANUP WAS COMPLETED ON TUESDAY AUGUST 21ST. SPILL VOLUME WAS DETERMINED TO BE 58 GALLONS. 35 GALLONS OF FREE PRODUCT WAS COLLECTED, 18 GALLONS WAS RECOVERED IN 28.2 TONS OF SOIL, AND AN ESTIMATED 5 GALLONS REMAINS IN SOILS THAT COULD NOT BE DUG UP. THE SOIL THAT WAS NOT RECOVERED IS UNDER A WASHDOWN SLAB AND A GPE CABINET. GROUNDWATER AND SURFACE WATER WERE NOT AFFECTED BY THE RELEASE.