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CITGO Petroleum (1250), Lake Charles

LDEQ Accident Report

Accident #151352
State Police #13-04359
Accident Date2013-09-21
Report Date 2013-10-03
Follow-up Date 0000-00-00
Follow-up: No

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Benzene3d 13h 30mWastewater treatment unitNONOYES33.0 pounds
Xylene3d 13h 30mWastewater treatment unitNONONO13.0 pounds
Ethylbenzene3d 13h 30mWastewater treatment unitNONOYES3.0 pounds
Toluene3d 13h 30mWastewater treatment unitNONONO86.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Weather

This incident involved a Benzene release associated with wastewater diversion CITGO's wastewater treatment plant. This wastewater diversion occurred as a result of a flash flood heavy rain event. CITGO diverted the wastewater into a concrete diked containment area surrounding the wastewater tanks. According to CITGO, the wastewater diversion was necessary to avoid overfilling of stormwater and equalization tanks. One of the WWTP Equalization Tanks (TK 310) had been out of service for inspection/maintenance going into the subject rainfall event.

Discharge Preventable - Under Investigation

Notes/Remedial Actions

Wastewater processing rates were maximized and material diverted to diked area was pumped to controlled storage as tankage became available. CITGO will be constructing a fourth wastewater storage tank as well as an additional API separator and aeration tank.