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ExxonMobil Chemical Plant (286), Baton Rouge

LDEQ Accident Report

Accident #106837
State Police #08-03851
Accident Date2008-06-28
Report Date 2010-04-22
Follow-up Date 0000-00-00

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
styrene monomer19 hoursTankNONONO900.0 pounds
Ethylbenzene19 hourstankNONOYES250.0 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Equipment Failure

Styrene monomer tank experienced a roof failure, cause undetermined. The tank was in the process of being de-inventoried and transfer to another tank remains underway. During transfer of crude styrene from one storage tank to another the roof of storage tank MV-816 failed.

Discharge Preventable - No

Could not predict the roof collapse.

Notes/Remedial Actions

They have begun an air monitoring plan, testing for Styrene and LEL. Slight odor at the tank but nothing detected outside fence line. They do not believe any RQ were exceeded.