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ExxonMobil Refinery (2638), Baton Rouge

Releases of Polynuclear Aromatic Hydrocarbons

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release

PSLA #10 quench line flange
Cause: The release resulted from a leak caused by a loose flange.

Followup: Yes

Notes: A pan was placed under the leaking flange to collect oil for reprocessing, and to mitigate further release of the material to soil. The bolts were replaced and tightened which stopped the leak. The contaminated soil was remediated immediately after the leak was isolated. 1.5 barrels of Coker feed (or 63 gallons) was also spilt to soil but is not reported as a specific pollutant emitted. However, coker feed has the same RQ as crude oil (1 barrel or 42 gallons) and is thus exceeded. The RQ for PAHs was also exceeded.
1.9 pounds

Underground coker feed line
Cause: Oil was discovered seeping up from the ground due to a leak in an underground coker feed line.

Followup: Yes

Notes: The line segment that developed the leak was removed from service and demolished. Excavation and soil remediation have been completed. Permanent isolation/repair of affected piping was completed by removing from service the line segment that developed the leak. The oil is a coker feed stream which has a high viscosity and does not migrate. The hydrocarbon material has been removed and all contaminated soil is disposed. SPOC and verbal report state that 15 gallons of Resid was released, but not mentioned in written report.
2.6 pounds

storage tank
Cause: On February 2, 2013, a tank roof separated from the rim of tank releasing material to air. Initial contact with SPOC indicated a possible release exceeding 1 pound RQ limit of PAHs. The rim had separated from the roof of a storage tank at the facility. The tank was isolated. No estimate was available of how much material the tank contained. At approximately 5:08pm, Louisiana State Police was notified of a potential release of hydrogen sulfide over the reportable quantity.

Followup: No

Notes: Flow to the tank was shut off. SPOC states that caller reported 6ppm for VOCs during one update call.