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Marathon Ashland Petroleum (3165), Garyville

Causal Factor: Under Investigation

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.

Crude Oil: 10.0 gallons
Water: 90.0 gallons

FLARE: coke drum overhead line; 205-PC-1511-V2; north flare
Cause: Water from the offline coke drum overhead line was inadvertently sent to the Main Fractionator, vaporized and overpressured the wet gas compressor suction drum causing 205-PC-1511-V2 to open to the North Ground Flare. Released into air. FLARE.

Followup: No

Notes: RQ. 2548 lbs of Sulfur Dioxide, 15 lbs of Nitrogen Oxides, 6.8 lbs of Hydrogen Sulfide, 21.5 lbs of Highly Reactive Volatile Organic Compounds (HRVOCs), and 31.7 Volatile Organic Compounds (VOCs). LDEQ report states that "this incident is an area of concern with regards to LAC 33:III.905." Remedial Actions: Cut charge on 205 Coker due to Fractionator pressuring problem and removed ROSE Pitch from unit. Put ROSE unit on internal circulation. Relieved to flare.
Sulfur Dioxide: 2,548.0 pounds
Nitric Oxide: 15.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs): 21.5 pounds
Volatile Organic Compounds (VOCs): 31.7 pounds
Hydrogen Sulfide: 6.8 pounds


Unit 32 Stripper - Bleeder valve
Cause: Unit 5 coker sent a hydrogen sulfide emission to unit 33 sour water tank due to 3/4" bleeder valve being left open during the steaming out of Unit 32 Stripper.

Followup: No

Notes: BRQ. Refiney letter states that no reportable quantities were exceeded. Hot zone set up around the unit to prevent exposure to workers; report states "no known offsite impacts associated with the incident."
Hydrogen Sulfide: 24.0 pounds

FLARE - Refrigerated Butane Storage Emergency Flare Station
Cause: Refrigerated Butane Storage unit malfunctioned during maintenance activities, had to flare to release pressure. One part of report notes a power outage, unclear if this was purposeful as part of maintenance or not. FLARE.

Followup: No

Notes: BRQ. No reportable quantities were exceeded, but detailed emissions report included. Maintenance work began; incident is still "under investigation," but no follow-up report included.
Highly Reactive Volatile Organic Compounds (HRVOCs): 0.8 pounds
Volatile Organic Compounds (VOCs): 23.7 pounds
Nitrogen Oxide: 49.2 pounds
Carbon Monoxide: 41.3 pounds
Particulate Matter 10: 3.8 pounds

Cause: Release from a ground flare, several people in community calling in smell complaints.

Followup: No

Notes: BRQ. Stated that "no reportable quantities were exceeded" [BRQ].


SWDI roll-off box
Cause: There was smoke coming from the SWDI roll-off box located north of the non-hazardous drum storage area.

Followup: No

Notes: The incident is under investigation. The refinery's shift emergency response team (SERT) put out the domestic trash fire. There were no known off-site impacts.


Block Valve on Unit 12 Platformer Unit (FUG 018)
Cause: The bonnet to a block valve developed a leak to release butane. Cause of the leak was unknown, possibly weather related. Refinery letter states that "all aspects of this incident are currently under investigation."

Followup: No

Notes: BRQ. Steam was applied to the leak, and the valve was clamped.
Compressed Flammable Gas: 216.8 pounds


FLARE: Unit 59 North Flare (EQT #0162 EIQ #81-74)
Cause: Refinery letter states that pressure on main fractionator unexpectedly increased, and pressure control valve to the flare opened to decrease the pressure. Sulfur dioxide was released to the air. Refinery letter states that "all aspects of this incident/upset are currently under investigation." FLARE.

Followup: No

Notes: BRQ. No Information Given. Refinery letter states that "all aspects of this incident/upset are currently under investigation."
Sulfur Dioxide: 207.0 pounds


Unit 59 South Flare
Cause: On October 30, 2012, at 15:20 hours, a propylene rail car was lined up to the flare during unloading process. A Root Cause Analysis is being conducted to determine the exact cause of this incident.

Followup: No

Notes: Products Control personnel closed flare line leading from propylene unloading racks to the flare header system. Incident investigation will result in recommendation items designed to prevent recurrence. The reportable quantity for Highly Reactive Volatile Organic Compounds (HRVOCs) was exceeded during the 24 hour period. An incident investigation was conducted to determine the cause or causes of the incident. Per this investigation, the root cause was identified as the procedures were followed incorrectly. The SGS operator misaligned the valve line-up and allowed propylene to offload to the flare. The two recommendations (actions) from the investigation were 1) review and reinforce to personnel the importance of following Operating Guidelines while performing all shift duties- completed 2/18/13; and 2) add proper valve alignment to railcar checklist- completed on 2/20/13.
Highly Reactive Volatile Organic Compounds (HRVOCs): 123.3 pounds
Nitrogen Oxide: 35.7 pounds
Volatile Organic Compounds (VOCs): 127.0 pounds


unit 34, thermal oxidizer
Cause: An investigation is underway to determine the cause of the incident. False reading on a flow transmitter. Following the shutdown, feed increased to Unit 34 and shutdown the oxygen skid. This resulted in high sulfur dioxide and visible emission from the U34 thermal oxidizer.

Followup: No

Notes: The refinery's ambient air monitoring station data did not exceed the NAAQs for Sulfur dioxide. The refinery's Air Monitoring team was dispatched to monitor the community downwind of the incident. There were no other known off-site impacts. The Unit 234 was restarted. Maintenance steamed out the flow transmitter with the faulty reading. U34 oxygen skid was restarted. Specific remedial action unknown at this time; an incident investigation will result in recommendation items designed to prevent the recurrence of this event. They admitted to releasing 416.69 lbs more than their permitted maximum for sulfur dioxide. The total sulfur dioxide released was actually 639.64 lbs. The facility claimed that the reportable quantity for sulfur dioxide was not exceeded, however, the opacity limit from the thermal oxidizer was exceeded.
Sulfur Dioxide: 639.6 pounds

oily water sewer junction box
Cause: The release occurred eastern perimeter of the Unit 222 Saturates Gas Unit. Discharge discovered during an inspection of the stormwater sewer system. Excavation in the area determined the source of oil to be a leaking oily water sewer (OWS) junction box.

Followup: No

Notes: The leaking OWS junction box was isolated on July 31, 2012. Excavation activities to remove contaminated soil into 55-gallon drums and roll-off boxes were ongoing during time of the report. The excavated material was to be tested and properly disposed of at a permitted facility. Marathon claimed that they would collect soil samples under completion of the removal of contaminated soil and those samples would be analyzed to verify that the soil meets the allowable levels set forth in LDEQs Risk Evaluation/Corrective Action Program (RECAP) document. Any subsequent recommendations were to be implemented to prevent reoccurrence of the incident upon completion of the investigation. LABB was unable to find the LDEQ verbal report or original SPOC report. They claimed the release was less than 10 barrels so we estimated the release to be 9 barrels, which is 378 gallons.
Crude Oil: 378.0 gallons

Unit 63 Tank Farm
Cause: The product inside the Unit 210 Crude Charge Pump caught fire due to a seal failure. While extinguishing the fire with fire water, some product spilled to the concrete containment around the tank. An incident investigation is being conducted to determine the root cause of the incident. 6-10 bbl of crude oil burned in the tank in addition to one bbl of oil released.

Followup: No

Notes: The pump suction and discharge were blocked in to stop the flow. The Shift Emergency Response Team (SERT) responded and extinguished the fire. A vacuum truck removed the spilled product. The oil was to be reprocessed, and the water would be treated in the waste water treatment plant. The incident investigation will result in recommendation items to prevent the recurrence of this event. There was no medical attention necessary for the exposed individuals.
Crude Oil: 42.0 gallons

Sour Water Tanks in Units 33 and 233
Cause: The incident took place when fixed and personal H2S monitors were alarming in the area of the Sour Water Tank in Units 33 and 233. After some time, it was determined that the non-degassed Sour Water was allowed to bypass the surge drum due to high pressure, which routed this material directly to the Sour Water Storage Tanks. This resulted in a vapor release from the Sour Waste Tanks, A root cause analysis is being conducted to determine why the incident occurred. The refinery's fence line Ambient Air Monitors did not pick up any excess emissions at the time of the incident. The incident released approximately 620 pounds of Hydrogen Sulfide.

Followup: No

Notes: Air monitoring was conducted in the area around the tank. A perimeter was established around the affected area. The flow of sour water to the Sour Water Tanks was decreased ending the vapor release from the tanks. The root cause analysis will result in recommendations designed to prevent the recurrence of this event.
Hydrogen Sulfide: 620.0 pounds
Hydrogen: 2.0 pounds
Carbon Dioxide: 65.0 pounds
Ethylene: 59.0 pounds
Ethane: 73.0 pounds
Methane: 45.0 pounds
Propane: 81.0 pounds
Propylene: 220.0 pounds
Isobutane: 122.0 pounds
n-Butane: 72.0 pounds
1-Butene: 51.0 pounds
trans-2-Butene: 49.0 pounds
cis-2-Butene: 35.0 pounds
Isopentane: 30.0 pounds
Pentane: 40.0 pounds
Cyclopentene: 159.0 pounds
Butene: 52.0 pounds

pipe containing crude oil in Unit 10 - Crude unit
Cause: A 3/4-inch process pipe containing crude oil connecting the desalters sheared causing loss of containment. Crude oil exited the pipe and was collected in the oily water sewer.

Followup: No

Notes: The piping was blocked in to eliminate the amount of crude oil leaking from the piping. All crude that leaked landed on the concrete slab in the unit and was collected by washing it into the oily water sewer.
Volatile Organic Compounds (VOCs): 6,139.8 pounds
Benzene: 71.2 pounds
Compressed Flammable Gas: 1,749.7 pounds
Hydrogen Sulfide: 10.8 pounds
Xylene: 41.0 pounds