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Marathon Ashland Petroleum (3165), Garyville

Releases of Water

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

No Information Given
Cause: COLD WEATHER. Broken line, possibly due to recent freeze but still under investigation, no info given as to where line is located.

Followup: No

Notes: BRQ. LDEQ reports states that based on analytical results, no reportable quantities were exceeded. Took sample of spilled material for analysis. No info given as to actual time duration of leak, only discovery time and time secured. LDEQ and State Police reports only. No refinery letter required - courtesy notification.
90.0 gallons

South Ground Flare (EQT 0284)
Cause: New Naphtha Hydrotreating Unit relief valve failed--opened intermittently at lower pressures than it was supposed to and sent stream to flare. Discovered problem thanks to citizen complaint re: the smell. Reportable quantity for SO2 exceeded. Duration given below is an estimate; emissions were intermittent from 1758 hrs to 2215 hrs.

Followup: No

Notes: RQ. Faulty valve taken out of service & sent for repairs. RQ. Detailed release calculations attached to refinery letter.
0.6 pounds

South Flare
Unit 59 South Flare
Cause: A tube leaked on the Unit 15 Hot Separator Overhead Fin Fans at 17:52 hours. At 18:00, the unit was undergoing emergency shutdown procedures and the U15 dump valve was opened to the flare. The incident was a Gas Oil leak in the Unit 15 Hot separator Overhead Fin Fan Exchangers. This leak caused a vapor release of hydrocarbons and hydrogen in addition to a small amount of hydrogen sulfide.

Followup: Yes

Notes: PDF was too large to upload. Unit 15 was depressurized to the South Flare to safely isolate the leaking Overhead Fin Fan. Once the unit pressure was sufficiently low in the unit, the Fin Fans were isolated and the leak stopped. An incident investigation will result in recommendations to prevent recurrence. The reportable quantities for hydrogen sulfide, compressed flammable gas, and compressed flammable liquid were exceeded during this event. A report on October 9, 2013, removed greenhouse gas emissions and revised the estimate of VOC emissions.