SFPP, LP

Incident Narrative

ON 5/1/20, AT 10:10 THE OPERATOR AT CONCORD STATION DURING A SHIFT INSPECTION SAW THAT SURGE PUMP 4 (LS-16) WAS SPRAYING GASOLINE FROM A PUMP SEAL. THE INBOUND AND OUTBOUND LINES TO THE STATION WERE IMMEDIATELY SHUT DOWN AND PERSONNEL WERE DISPATCHED TO THE STATION. A 911 CALL WAS MADE DUE TO PRODUCT BEING GASOLINE AND NRC/CALIFORNIA OES NOTIFICATIONS WERE MADE AT 1022. AN AREA APPROXIMATELY 10' X 15' OF GRAVEL WAS SATURATED BY THE SPILL AND WHEN LEL MONITORING INDICATED IT WAS SAFE TO ENTER THE SPILL AREA, THE SPILL WAS INITIALLY CALCULATED TO BE APPROXIMATELY 25.1 GALLONS ON 5/2/2020. THE PUMP WORK WAS COMPLETED AT 2049 AND OUTBOUND LINES RESUMED OPERATION SHORTLY AFTERWARD. AFTER REMEDIATION'S SAMPLING AND SUBSEQUENT EXCAVATION, THE SPILL VOLUME WAS REVISED TO BE 34.5 GALLONS ON 5/12/2020. NO FURTHER REMEDIATION IS EXPECTED AND THIS VOLUME IS NOT EXPECTED TO CHANGE AGAIN. THE CAUSE OF THE RELEASE IS STILL UNDER INVESTIGATION AND A SUPPLEMENTAL REPORT WILL BE PROVIDED WHEN INVESTIGATION IS COMPLETE. UPDATE 8/27/2020: AN INVESTIGATION INTO THE CAUSE OF THIS INCIDENT WAS COMPLETED ON 8/21/2020 AND THE CAUSE WAS DETERMINED TO BE A FAILURE OF THE INTERMEDIATE BUSHING ASSEMBLY IN THE SHAFT. THE BROKEN SHAFT CAUSED THE MECHANICAL SEAL TO UNLOAD ALLOWING PRODUCT TO BE RELEASED.