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Marathon Ashland Petroleum (3165), Garyville

Releases of Methane/Ethane Mixture

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

North Ground Flare
Cause: Incident was the result of an electrical problem for the new production unit. A triplicated Triconex level indicator on the 1st stage suction drum malfunctioned, filled with liquid and tripped the wet gas compressor. Drum over-pressured which caused 205-PC-1511-V1 and V2 to open to the North Ground Flare. Released to air.

Followup: No

Notes: Reportable quantities for sulfur dioxide, hydrogen sulfide, and HRVOCs were exceeded. Remedial actions: The unit 205-delated coker reduced charge rate to minimize the release.
1,880.4 pounds

FLARE - South Ground Flare [EIQ 20B-08]
South Ground Flare
Cause: FLARE. Heat exchanger leak & fire required shutdown of Hydrocracking Unit, had to flare.

Followup: No

Notes: BRQ. Refinery letter states that no reportable quantities were exceeded and that "no specific remedial action is required in this case." Detailed emissions report included.
35.8 pounds