COLONIAL PIPELINE CO

Incident Narrative

ON MONDAY, JUNE 1, 2020, AT APPROXIMATELY 07:00 CST A CONTRACT CREW RESUMING WORK AT THE STATION OBSERVED A SHEEN ON A SMALL VOLUME OF WATER THAT HAD ACCUMULATED WITHIN AN EXCAVATION SITE (NOTE: THE EXCAVATION HAD NO ASSOCIATION TO CAUSE OF THE LEAK SOURCE) BETWEEN MAY 29, 2020 (14:30 CST) AND JUNE 1, 2020 (07:00 CST). UPON FURTHER INVESTIGATION, THE PRODUCT WAS DETERMINED TO BE DIESEL AND THERE WERE NO SIGNS OF ACTIVE RELEASE; HOWEVER, VISIBLE STAINING WAS NOTED NEAR THE BONNET AREA OF LINE 2 MLBV. AT APPROXIMATELY, 09:30 CST, EQUIPMENT AND ADDITIONAL CREWS BEGAN REMOVAL OF THE PRODUCT/WATER FROM THE EXCAVATION, WHICH, WAS COMPLETED BY 10:30 CST. REMOVAL OF CONTAMINATED SOIL AND PREPARATION OF THE WORKSITE COMMENCED AND CONTINUED THROUGH THE NIGHT. ON JUNE 2, 2020, AT APPROXIMATELY, 05:45 CST, THE VALVE BONNET WAS CONFIRMED TO BE SOURCE OF RELEASE AS A RESULT OF EXCESSIVE WEAR AND TEAR. AT APPROXIMATELY, 07:00 CST, LINE 2 WAS SHUT DOWN AND THE STATION ISOLATED TO SAFELY FACILITATE REPAIR OF THE VALVE. AT APPROXIMATELY, 14:45 CST THE VALVE REPAIR WAS COMPLETE AND NORMAL OPERATIONS RESUMED. AS A PREVENTIVE MEASURE OF REOCCURENCE, COLONIAL PERSONNEL ARE EVALUATING BEST PRACTICES OF SOFT GOOD REPLACEMENT (SUCH AS DURING SCHEDULED SHUT DOWNS, OR, OTHER ALTERNATIVE INTERVALS OF OPPORTUNITY). ALL RELEASED PRODUCT WAS CONTAINED ON CPC PROPERTY, HAD NO IMPACT TO ECOLOGICAL OR ENVIRONMENTAL RESOURCES AND RESULTED IN NO EMERGENCY CONDITIONS. THE INITIAL RELEASE VOLUME ESTIMATE IS 156 GALLONS. THE LA STATE POLICE (SPOC), (REF: REPORT NO. 20-01853) AND LOCAL LEPC WERE NOTIFIED. BASED ON RELEASE VOLUME (3.7 BARRELS) AND COST OF REPAIR AND RESPONSE BEING LESS ≤ $50K, NRC NOTIFICATION IS NOT REQUIRED.