COLONIAL PIPELINE CO

Incident Narrative

ON JUNE 20, 2013, AT APPROXIMATELY 11:25 AM, A ENVIRONMENTAL CONTRACTOR WORKING AT DANIELSVILLE STATION NOTICED PRODUCT LEAKING FROM THE STEM SEAL LEAK CONTAINMENT CANISTER ON THE LINE 01 BLOCK VALVE. THE CONTRACTOR IMMEDIATELY CONTACTED AN AREA OPERATIONS EMPLOYEE. AT APPROXIMATELY 11:27, THE CONTROL CENTER WAS NOTIFIED AND LINE 01 WAS SHUT DOWN. PROPER INTERNAL NOTIFICATIONS WERE MADE AND EMERGENCY RESPONSE CREWS WERE DISPATCHED TO DANIELSVILLE STATION. A CALL WAS ALSO MADE TO THE LOCAL FIRE DEPARTMENT. THE FIRST COLONIAL EMPLOYEE ARRIVED AT THE STATION AT 12:15. A CATCH BASIN WAS INSTALLED TO CONTAIN THE LEAKING PRODUCT. AFTER AIR MONITORING WAS STARTED, IMPACTED SOIL WAS REMOVED FROM THE AREA AROUND THE VALVE AND STORED AT THE SITE. TEMPORARY REPAIRS WERE MADE TO THE VALVE USING INJECTABLE PACKING AND THE LINE WAS RESTARTED AT 20:40. DUE TO THE POTENTIAL TO IMPACT GROUNDWATER, GA DNR EMERGENCY RESPONSE (CASE NUMBER 71389) WAS NOTIFIED AT 13 :30 PM. BASED UPON PRELIMINARY ASSESSMENT ACTIVITIES CONDUCTED ON JUNE 20 AND 21 AN ESTIMATED MINIMUM OF 2 TONS OF SOIL WERE IMPACTED BY THE RELEASE. 10 GALLONS ARE ESTIMATED TO BE CONTAINED WITHIN THE IMPACTED. AN ESTIMATED 8 GALLONS WERE LOST TO EVAPORATION. THE TOTAL RELEASE VOLUME IS ESTIMATED AT 18 GALLONS. APPROXIMATELY 5 TONS OF IMPACTED AND CLEAN SOIL WERE EXCAVATED RECOVERING 1.5G OF FUEL. ADDITIONAL ACTIVITIES INCLUDING THE INSTALLATION OF MONITORING WELLS TO ASSESS GROUNDWATER IMPACTS AND REMOVAL OF REMAINING CONTAMINATED SOIL ARE PENDING. THE RELEASE VOLUME MAY BE ADJUSTED BASED UPON THE RESULTS OF THESE ACTIVITIES. AS OF 8/19/13: SAMPLING OF A MONITORING WELL INSTALLED IMMEDIATELY DOWNGRADIENT OF THE RELEASE SITE FOUND NO IMPACT TO GROUNDWATER FROM THE RELEASE. EXCAVATED IMPACTED SOIL WILL BE TREATED WITHIN THE ATLANTA JCT LANDFARM. NO FURTHER ASSESSMENT OR REMEDIATION ACTIVITIES ARE ANTICIPATED.