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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #115595
State Police #091786
Accident Date2009-06-11
Report Date 2009-06-17
Follow-up Date 2009-10-01
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Benzene20 minutesHydrocarbon feed exchangerNONOYES1.1 pounds
Naphtha20 minutesHydrocarbon feed exchangerNONOYES100.0 gallons
Hydrogen Sulfide20 minutesHydrocarbon feed exchangerNONONO13.4 pounds
Volatile Organic Compounds (VOCs)20 minutesHydrocarbon feed exchangerNONOYES414.0 pounds
Naphtha20 minHydrocarbon feed exchangerNONOYES100.0 gallons

Accident Classified As:

Cause of Problem: Maintenance/Procedures

While cleaning the exchanger a piece of tubing blew out causing a release of naptha to the exchanger pad.

Discharge Preventable - No

Marathon claims the release was unforeseeable.

Notes/Remedial Actions

Residual naphtha was washed into the oily sewer. The exchanger was isolated.