MAGELLAN TERMINALS HOLDINGS, LP

Incident Narrative

DDURING DEWATERING ACTIVITIES FROM HURRICANE HARVEY AND HEAVY RAINFALL RELATED FLOODING, MAGELLAN PERSONNEL IDENTIFIED LEL READINGS AND VAPORS WITH HYDROCARBON ODOR. MAGELLAN PERSONNEL NOTIFIED 911 AND EVACUATED THE FACILITY UPWIND. THE AREA WAS COVERED WITH FIRE SUPPRESSION FOAM TO SUPPRESS THE VAPORS. ONCE SAFE TO DO SO, RECOVERY OPERATIONS COMMENCED. CONTINUOUS AIR MONITORING WAS CONDUCTED AND ADDITIONAL FOAM WAS APPLIED WHEN VOC LEVELS INCREASED. IN COORDINATION WITH THE USCG (INCIDENT COMMANDER), SECTIONS OF THE FACILITY DIKE WALL WAS REMOVED TO ALLOW WATER TO DRAIN OFF THE ROADWAYS TO ENABLE RESPONSE EQUIPMENT ACCESS TO THE RELEASE AREA. SHEEN WAS OBSERVED IN THE DITCH ALONG THE EASTERN FACILITY BOUNDARY AND IN THE HOUSTON SHIP CHANNEL BUT DID NOT MIGRATE PASSED THE DEFENSIVE BOOM DEPLOYED AT THE FACILITY OUTFALL. HAND GAUGING TANK 518 PRIOR TO HURRICANE HARVEY INDICATED 5272 BBLS OF REFINED PRODUCTS WAS RELEASED. APPROXIMATELY 672 BBLS WERE RECOVERED. THE REMAINING PRODUCT EVAPORATED. FLOOD WATERS CAUSED THE TANK TO FLOAT. WHEN THE WATERS RECEDED THE TANK POSITION WAS SHIFTED SO THE SUMPS WERE NOT POSITIONED TO BE SEATED PROPERLY. THIS CAUSED STRESS ON THE WELDS THAT ATTACHED THE SUMPS TO THE BOTTOM PLATE AND THUS THE WELDS AROUND THE SUMP FAILED. THE SUMP CAVITY WILL BE ENLARGED TO ACCOMMODATE POTENTIAL FUTURE SHIFTING. APPROXIMATELY 75 CUBIC YARDS OF SOIL HAVE BEEN REMEDIATED. SOIL REMEDIATION ACTIVITIES ARE CONSIDERED COMPLETE AND INCIDENT CLOSURE HAS BEEN REQUESTED FROM THE TCEQ. ADDITIONAL FOLLOW UP NRC REPORTS ON INCIDENT: 1189014, 1189206, AND 1189433 SUPPLEMENTAL FILED: UPDATE TO PART B6, PART C6, AND PART H SUPPLEMENTAL NO. 2 FILED: UPDATE PART D 8C AND 8E AND PART H NARRATIVE SUPPLEMENTAL NO. 3 FILED/FINAL: (2/12/2019) UPDATE PART H NARRATIVE.