COLONIAL PIPELINE CO

Incident Narrative

ON 3/2/17 AT APPROXIMATELY 10:45 EST , WHILE PERFORMING A ROUTINE INSPECTION, A COLONIAL TECHNICIAN DISCOVERED A SMALL AMOUNT OF DIESEL FUEL IN A STATION DRAINAGE DITCH AT COALMONT STATION. AT APPROXIMATELY 11:00 THE TECHNICIAN NOTIFIED THE OPERATIONS MANAGER WHO NOTIFIED ADO (ACTING DO) AND THE DEM. THE TECHNICIAN BEGAN CLEAN UP AND INVESTIGATING THE POTENTIAL SOURCE. INITIAL CLEAN UP CONSISTED OF ABSORBENT PADS USED TO COLLECT ABOUT 5 GALLONS OF PRODUCT. AS ADDITIONAL RESOURCES ARRIVED AND BEGAN DIGGING AROUND THE YARD ADDITIONAL SMALL AMOUNTS OF PRODUCE WERE FOUND AND IT WAS SUSPECTED THAT IT WAS A POSSIBLE ACTIVE LEAK. THOUGH THE STATION WAS BEING BYPASSED, LINE 20 WAS SHUT DOWN AT 1354. CONTINUED INVESTIGATION DETERMINED THAT THE SOURCE HAD BEEN THE LINE 20 STATION BLOCK VALVE STEM SEAL WHICH HAD BEEN REPAIRED ON 2/16/17. THE LINE WAS RESTARTED AT 19:30. SINCE THERE WERE NO IMPACTS TO SURFACE OR GROUND WATER, NO NOTIFICATIONS WERE REQUIRED. A COURTESY NOTIFICATION WAS MADE TO TDEC AT 14:50 ON 3/2/17. ON 4/5/17 AT 14:53 A NRC NOTIFICATION WAS MADE. THE COST ESTIMATE INCREASED GREATLY DUE TO HAND EXCAVATION AT THE STATION. 5/10/17: 10 GALLONS OF PRODUCT WAS RECOVERED USING SORBENTS AND 3 GALLONS WAS CONTAINED IN THE EXCAVATED SOIL FOR A TOTAL VOLUME OF 13 GALLONS. SOILS WERE DISPOSED OF AT THE BRADLEY COUNTY, TN LANDFILL AND ABSORBENTS WERE DISPOSED OF AT RINECO IN BENTON, AR.