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Marathon Ashland Petroleum (3165), Garyville

Releases of Dock Ballast Water

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

Dock 4 floating barge
Cause: A tug boat was moving barges from Dock 3 and accidentally ran into the Dock 4 floating barge. Operators noticed Dock 4 was listing backward and small holes were discoverved near the water line.


Notes: The ballast water contains small concentration of corrosion inhibitor. The inhibitor contained dilute concentrations of sodium nitrate and sodium hydroxide. Estimated amount spilled reported by refinery is between 42 and 420 gallons. LDEQ reported 100 gallons spilled. The total amount of inhibitor originally contained in the ballast water was less than 14 lbs. = 4 lbs sodium nitrate, 0.14 lbs sodium hydroxide. After 7 years these compounds would most likely be inert.
100.0 gallons