RIMROCK MIDSTREAM

Incident Narrative

FLINT HILLS SPILL NARRATIVE: 09/10/2015 CONTROL CENTER OPERATOR OVERFILLED TANK # 4202 AT DICKENSON PUTTING APPROXIMATELY 100 BBL. OF CRUDE IN THE TANK DIKE. MOST OF THE PRODUCT WAS CONTAINED WITHIN THE TANK DIKE. A SMALL AMOUNT ESCAPED THE CONTAINMENT BUT REMAINED ON THE PROPERTY OR ON THE ADJACENT PROPERTY. NO IMPACT TO WATER. AT 00:27 ON SEPTEMBER 10, 2015 THE PIPELINE CONTROLLER RECEIVED A HIGH-HIGH ALARM IN CONTROL ROOM FOR TANK #4202 AT DICKINSON STATION. THE OPERATOR ACKNOWLEDGED THE ALARM, DOCUMENTED THE TANK LEVEL AND INITIATED A SHUTDOWN OF THE DICKENSON PUMP STATION. CONTROLLER INTENDED TO SHUT DOWN THE ENTIRE PIPELINE BUT INADVERTENTLY INITIATED A SHUTDOWN OF ONLY THE DICKENSON OUTBOUND PUMP AND NOT THE UPSTREAM PUMP STATION AT BURKETT. THIS ACTION RESULTED IN THE FLOW OF OIL TO REMAIN FLOWING INTO DICKENSON. THE CONTROLLER INTENDED TO SHUTDOWN PIPELINE OPERATIONS FOR THE DAY BUT MISTAKENLY LEFT THE BURKETT STATION RUNNING. THE HIGH LEVEL ALARMS CONTINUED TO SOUND IN THE CONTROL ROOM AND WERE NOT ACKNOWLEDGED BY THE CONTROLLER. THE CONTROLLER FELL ASLEEP AND WAS AWAKENED AT 04:20 BY THE ALARMS. CHRONOLOGY: 04:21 PIPELINE CONTROL CENTER OPERATOR STARTED DICKINSON PUMP TO MOVE PRODUCT OUT OF DICKINSON TANKS AND INTO ROSE ROCK TANK AT EL DORADO 06:10 PIPELINE CONTROL CENTER OPERATOR NOTIFIED SCADA MANAGER OF THE INCIDENT. SCADA MANAGER VERIFIED ALL EQUIPMENT APPEARED TO BE FUNCTIONING ACCURATELY. 06:30 PIPELINE CONTROL CENTER OPERATOR DISPATCHED CONTRACT PIPELINE TECHNICIAN TO DICKINSON STATION TO INVESTIGATE. 09:20 CONTRACT PIPELINE TECHNICIAN ARRIVED ON SITE AT DICKINSON 09:25 CONTRACT PIPELINE TECHNICIAN CONFIRMED TO PCC OPERATOR THAT A TANK OVERFLOWED MOST OIL WAS CAUGHT BY THE EARTHEN CONTAINMENT SUMP. ALL OIL STAYED ON OUR PROPERTY AND DID NOT REACH ANY WATER TIME NOT DOCUMENTED: DISPATCHED SPILL CLEANUP CONTRACTOR TO DICKINSON TO ASSIST WITH CLEAN UP. TIME NOT DOCUMENTED: BEGAN PUMPING PRODUCT BACK INTO PIPELINE TO ROSE ROCK'S TANK IN EL DORADO, KANSAS. TIME NOT DOCUMENTED COMPLETED INITIAL CLEANUP OF DICKINSON STATION. DECEMBER 11, 2015: RECEIVED AUTHORIZATION FROM THE KDHE TO DESPISE OF 135 TONS OF PETROLEUM CONTAINED SOIL AT THE PLUMB THICKET UNDER PERMIT # 0842 THE PIPELINE WAS PURGED AND INERTED WITH NITROGEN IN DECEMBER OF 2015 AND WILL REMAIN IN THAT CONDITION FOR THE FORESEEABLE FUTURE.