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Marathon Ashland Petroleum (3165), Garyville

Releases of Distillate

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

Relief Valve 56-PSV-7008
Cause: Computer Process Controls going on at this time are believed to have been the initial cause of the Relief Valve relieving to the atmosphere.

Followup: No

Notes: Does not have an additional report of the actual totals of what was spilled. Steam up on relief valve to minimize emissions. BELOW REPORTABLE QUANTITY.
14.0 pounds

Upper level of Coker Unit
Cause: A tube had a circumferential crack that propagated halfway around one tube in the Distillate Product Fin Fan, 205-1351. Unit 205 GME Delayed Coker (FUG 0053).

Followup: No

Notes: The unit was shutdown to minimize and stop the leak. Water monitors were aimed at the leak to suppress vapors. Air monitoring occurred. A vacuum truck, boom, and absorbent pads were used to remove light sheen found in the rain water ditch on the east side of Marathon Avenue adjacent to the unit.
3,081.3 pounds