EXPLORER PIPELINE CO

Incident Narrative

ON NOVEMBER 12, 2016 AT 10:31AM CST EXPLORER RECEIVED A CALL THAT A RELEASE OF GASOLINE HAD BEEN OBSERVED FROM THE GERALD, MISSOURI PUMP STATION. THE EXPLORER CONTROLLER IMMEDIATELY SHUTDOWN THE PIPELINE AND THE APPROPRIATE EMERGENCY NOTIFICATIONS WERE MADE. THE LOCAL EMERGENCY RESPONDERS ON LOCATION AT THE GERALD PUMP STATION ISSUED A RECOMMENDED BUT NON MANDATORY EVACUATION FOR 3 HOMES IN THE AREA FROM APPROXIMATELY 13:00 CST TO 16;00 CST ON NOVEMBER 12, 2016. THE DIRECT SOURCE OF THE RELEASE WAS A 1-INCH PLUG FROM A GROVE 4 VALVE THAT IS ON THE SUCTION SIDE OF THE PUMP STATION UNIT 1. THE GROVE VALVE HAS BEEN REMOVED AND SUBMITTED TO A THIRD-PARTY FOR ANALYSIS. THE PUMP STATION IS ISOLATED FROM THE MAINLINE PIPELINE AND THE PIPELINE WAS RESTARTED ON NOVEMBER 15, 2016. THE HIGHEST SUCTION, CASE AND DISCHARGE PRESSURE FOR THE 24-HOUR PERIOD FROM THE DATE AND TIME THE EXPLORER PERSONNEL LEFT THE GERALD PUMP STATION ON FRIDAY, NOVEMBER 11, 2016 TO THE DATE AND TIME OF DISCOVERY OF THE RELEASE ARE AS FOLLOWS: HIGHEST SUCTION PRESSURE 615.60 PSIG, HIGHEST CASE PRESSURE WAS 824.1 PSIG, AND HIGHEST DISCHARGE PRESSURE WAS 797.4 PSIG THE VOLUME RELEASE WAS CALCULATED BASED ON FREE PHASE PRODUCE RECOVERED, SOIL TESTING AND PRODUCT EVAPORATION. ALL IMPACTED SOIL WAS TESTED AND PROPERLY MANAGED PER THE APPROPRIATE REQUIREMENTS.