HARVEST MIDSTREAM COMPANY

Incident Narrative

ON JULY 30, 2019 AN OPERATOR FROM ANOTHER COMPANY DISCOVERED OIL OVERFLOWING FROM PIG TRAP DRAIN PAN. THE HARVEST OPERATOR WAS NOTIFIED AND ARRIVED ONSITE JULY 30, 2019 AND IMMEDIATELY CLOSED THE PIG TRAP DRAIN VALVE AND DRIP PAN VALVE STOPPING THE LEAK AND BEGAN MAKING REQUIRED NOTIFICATIONS. IT IS BELIEVED THAT OIL WAS SLOWLY ENTERING THE PIG TRAP FROM A CLOSED ISOLATION VALVE. IT WAS ALSO BELIEVED THAT THE PIG TRAP DRAIN VALVE HAD BEEN CLOSED; HOWEVER, IT WAS PARTIALLY CLOSED BECAUSE THE BALL VALVE HASP HUNG UP ON THE LOCKING PIN. ALSO, THE DRIP PAN VALVE WAS LEFT OPEN WHICH ENABLED THE OIL TO FLOW TO THE DRIP PAN IN LIEU OF THE SUMP (IT WAS THE PATH OF LEAST RESISTANCE) AN ESTIMATED TOTAL OF 5 BBLS OF OIL WAS RELEASED INSIDE CONTAINMENT. APPROXIMATELY 4.5 BBLS WERE RECOVERED AND THE REMAINDER WAS DISPOSED OF. PREVENTATIVE MEASURES TO KEEP FROM REOCCURRING THE LOCAL OPERATING PROCEDURE WAS ADEQUATE AND THE PERSONNEL INVOLVED WAS RE-TRAINED AND RE-QUALIFIED ACCORDINGLY. THERE WILL BE CAR SEALS OR LOCKS ADDED TO CRITICAL VALVES ASSOCIATED WITH THE PIG TRAP. A CHECK VALVE WILL ALSO BE INSTALLED IN THE LINE DOWNSTREAM OF THE DRIP PAN TO HELP ENSURE OIL CAN ONLY FLOW TO THE SUMP.