COLONIAL PIPELINE CO

Incident Narrative

AT APPROXIMATELY 14:00 CST, ON JUNE 23, 2016, THE B OPERATOR OBSERVED DEAD VEGETATION NEAR THE ROOF DRAIN DISCHARGE ON TANK 1373 AT PORT ARTHUR PRODUCTS JUNCTION WHILE CONDUCTING STATION ROUNDS. THE TANK WAS NOT ACTIVE AT THE TIME. NO STANDING PRODUCT WAS OBSERVED ON THE GROUND. SOME PRODUCT WAS OBSERVED STANDING ON THE EXTERNAL FLOATING ROOF. REQUIRED INTERNAL NOTIFICATIONS WERE IMMEDIATELY MADE. TECHNICIAN, INSPECTOR AND CONTRACT CREW WERE MOBILIZED AND WERE ON SITE BY 14:30 CST, ON JUNE 23, 2016. TANK VALVE AND TANK ROOF DRAIN WERE CLOSED AND LOCKED OUT. MEASURES WERE TAKEN TO SEAL OFF THE INTERMEDIATE DIKE FOR THIS TANK. TANK REMAINED ISOLATED UNTIL REPAIRS TO THE EXTERNAL FLOATING ROOF WERE COMPLETED. INITIAL CLEANUP ACTIVITIES WERE COMPLETED BY 18:00 CST, ON JUNE 23, 2016. SOIL SAMPLES WERE TAKEN AND SENT TO THE LAB FOR TESTING. REPAIRS TO THE TANK ROOF AND ADDITIONAL CLEANUP ACTIVITIES WERE CONDUCTED ON JUNE 24, 2016 AND COMPLETED BY 13:30 CST, ON JUNE 24, 2016. PERMANENT REPAIRS TO THE EXTERNAL FLOATING ROOF WERE MADE TO 2 PIN HOLES AND A PUDDLE WELD DISCOVERED DURING INSPECTION AS WELL AS REPAIRS TO 2 PREVIOUS PATCHES CONDUCTED PRIOR TO COLONIAL'S ACQUISITION OF THIS FACILITY. PRODUCT RELEASED WAS DETERMINED TO HAVE ORIGINATED FROM THE EXTERNAL FLOATING ROOF. RAIN WATER AND PRODUCT MIGRATED DOWN THE ROOF DRAIN SYSTEM FOLLOWING SEVERAL RAIN EVENTS BETWEEN 18 AND 21 JUNE 2016. NO AGENCY NOTIFICATIONS WERE REQUIRED BECAUSE NO REPORTING THRESHOLDS WERE MET. ALL RELEASED PRODUCT WAS CONTAINED ON COMPANY PROPERTY. RESULTS FROM SOIL SAMPLE TESTING INDICATE A TOTAL RELEASE VOLUME OF 8 GALLONS.