COLONIAL PIPELINE CO

Incident Narrative

ON 4/09/19, LINE 19 WAS SHUT DOWN AT 1105 DUE TO LOW PRESSURE READINGS AT EAST NASHVILLE. AT APPROXIMATELY 1105, A COLONIAL EMPLOYEE WAS NOTIFIED OF A POTENTIAL LINE STRIKE. THE EMPLOYEE RESPONDED TO INVESTIGATE AND CONFIRMED THE LEAK AT APPROXIMATELY 1135. THE OPERATIONS MANAGER WAS NOTIFIED AT APPROXIMATELY 1138 AND THE DO, DPL AND DEM WERE SUBSEQUENTLY NOTIFIED. DUE TO THE ANTICIPATED COST OF THE EVENT, THE NRC NOTIFICATION WAS MADE AT 1300. AT 1530, TEMA/TDEC WAS NOTIFIED AS A COURTESY. IT WAS DETERMINED THAT A THIRD PARTY DRILLED INTO LINE 19 CAUSING THE RELEASE OF APPROXIMATELY 340 BARRELS OF GASOLINE. EMERGENCY RESPONSE ACTIVITIES BEGAN IMMEDIATELY TO CONTAIN AND RECOVER PRODUCT. THE DAMAGED LINE WAS REPAIRED WITH A 36"" TYPE - B SLEEVE. LINE 19 WAS RESTARTED ON 4/11 AT 10:44. ENVIRONMENTAL INVESTIGATION AND RECOVERY ACTIVITIES ARE ONGOING. AN INCIDENT ANALYSIS WILL BE COMPLETED. DURING A RAIN EVENT BEGINNING ON DECEMBER 21, 2019, HIGH WATER INUNDATED PROTECTION DAMS ALONG MCCRORY CREEK ON 3 OCCASIONS, EACH TIME TRAPPING A FISH BEHIND A DAM. THERE WAS A TOTAL OF 3 FISH IMPACTED DURING THE RAIN EVENT. THE STATE (APRIL GRIPPO OF TDEC) WAS NOTIFIED AND STATED SHE WOULD SUBSEQUENTLY CONTACT THE TWRA FOR NOTIFICATION. THE RAIN EVENTS OCCURRED ON DECEMBER 21, 22, AND 23, 2019. UPDATE: A TOTAL OF 2,216 TONS OF SOIL WAS EXCAVATED FROM THE SITE AND HAULED TO AN APPROVED LANDFILL FOR DISPOSAL. A CALCULATED TOTAL OF 208 GALLONS OF GASOLINE WAS DETERMINED TO BE PRESENT IN THE EXCAVATED SOILS. TO DATE, A TOTAL OF 2,108 GALLONS OF FREE PHASE PRODUCT HAS BEEN COLLECTED USING VACUUM TRUCKS FROM CONTAINMENT STRUCTURES AND WELLS. CURRENT, TOTAL RECOVERY VOLUME IS 2,316 GALLONS. UPDATE (JUNE 13, 2022): THE LINE STRIKE THAT OCCURRED TO COLONIAL'S LINE 19 ON APRIL 9, 2019, WITHIN THE FAA-RESTRICTED ACCESS AREA OF THE NASHVILLE INTERNATIONAL AIRPORT WAS RELATED TO DRILLING ACTIVITIES CONDUCTED BY A THIRD-PARTY (DRILLER) IN CONNECTION WITH CERTAIN STATE HIGHWAY PROJECTS, AND IN COORDINATION WITH (AND WITH THE COOPERATION AND PERMISSION OF) THE LANDOWNER AND THE LANDOWNER'S ENGINEERING CONSULTANT. IN DECEMBER 2018, COLONIAL RESPONDED TO AN 811 TICKET PLACED BY THE DRILLER BY MARKING ALL AREAS OF THE AIRPORT PROPERTY TO WHICH COLONIAL HAD AUTHORIZATION TO ENTER. THIS DID NOT INCLUDE THE FAA-SECURED AREA, BECAUSE COLONIAL DID NOT HAVE FAA AUTHORIZATION TO ENTER THE SECURED AREA. COLONIAL ADVISED THE DRILLER THAT IT WAS NOT ABLE TO ACCESS THE FAA-SECURED AREA AND TO CONTACT COLONIAL'S REPRESENTATIVES PRIOR TO CONDUCTING ANY WORK WITHIN THE FAA-SECURED PERIMETER. COLONIAL WAS NOT NOTIFIED BY THE DRILLER THAT ACTIVITIES WOULD BE CONDUCTED NEAR LINE 19 AT THE AIRPORT OR MORE SPECIFICALLY WITHIN THE FAA-RESTRICTED AREA ON APRIL 9, 2019. LINE LOCATING WAS PERFORMED BY THE LANDOWNER'S ENGINEERING CONSULTANT USING GIS-BASED MAP SOFTWARE AND OTHER EQUIPMENT THAT CONTAINED INCORRECT INFORMATION REGARDING THE LOCATION OF COLONIAL'S LINE 19. PERMANENT PIPELINE MARKERS WERE LOCATED NEAR AND VISIBLE FROM THE LOCATION WHERE THE SOIL BORINGS / DRILLING ACTIVITIES WERE CONDUCTED AND COLONIAL'S LINE 19 WAS STRUCK WITHIN THE FAA SECURED FENCE LINE; THE PERMANENT PIPELINE MARKERS CONTAINED WRITTEN INSTRUCTIONS TO CONTACT COLONIAL PRIOR TO EXCAVATING. ESTIMATED VOLUME RECOVERED TO DATE IS 53 BARRELS.