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ExxonMobil Refinery (2638), Baton Rouge

Releases of Oil (Sheen)

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

Outfall 003
Cause: There was a rain storm that lasted 1 hour and 15 minutes and produced 3.5 inches of rain. During this time, an estimated 1/8 of a gallon of oil was released into the treatment system and thus spilt through Outfall 003 into Callahan's Bayou. The oil sheen was 20'x30' and dissolved as it went with the current.

Followup: No

Notes: RQ not exceeded.
0.1 pounds

No Information Given
Cause: Worker noticed oil sheen under the dock at #2 berth. A leak from the middle cluster drain pan allowed 7.9 gallons of oil to leak into the Mississippi River. The oil was contained between two pipes running at water level.

Followup: No

Notes: Absorbent pads and boom used to contain and clean up. This release is BRQ.
7.9 gallons

Rain Basin 2 - Outfall 003
Cause: A heavy rainfall event occured resulting in Rain Basin 2 to overlflow through Outfall 003 into Callahan's Bayou and then into the Mississippi River. The sheen was approximately 50ft X 30ft, and the volume released was less than 2 cups of oil. ExxonMobil deployed additional containment boom immediately upon an employee's discovery of the sheen. Investigation efforts to determine root cause analysis are still under investigation.

Followup: No

Notes: Upon discovery boom was deployed to contain and absorb the sheen. Investigation efforts to identify root cause of oil are inconclusive. ExxonMobil will continue to monitor for potential oil in sewers and collection system to detect and mitigate potential spills. Upset description states that the River Basin 2 overflow through the Outfall 003 started on August 9, 2012 at 17:57 hours and continued until cessation on August 12, 2012 at 20:06 hours. Thus, the overflow occurred for 3 days, 2 hours, 9 minutes.
0.1 gallons