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Marathon Ashland Petroleum (3165), Garyville

Releases of Benzene

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
81231

2005-08-10
Outfall #002
Cause: BTEX (Benzene,Toluene,Ethylbenzene,Xylene) sample taken prior to discharging test water showed non-detect levels. However, a follow-up sample collected during the discharge disclosed levels above permitted levels of BTEX in water.

Followup: No

Notes: Facility is "working with the lab to avoid any reoccurrances". BTEX Levels equaled 401 ppb. Limit is 250 ppb. 151 ppb in excess.
80153

2005-06-28
Tank 120-6 (EIQ No. 16-74 and EQT 76)
Tank 120-6 (EIQ No. 16-74 and EQT 76) Tank 120-6 (EIQ No. 16-74 and EQT 76)
Cause: It is suspected that there was a failed level indicator on 6/26/05 which led to the product being on the roof of the tank. The cause of the failure in unknown.

Followup: Yes

Notes: The product was transferred to a finished gasoline storage tank. The cause of the failure and subsequent leak are still unknown and are awaiting the results of the investigation.
102.0 pounds
94400

2007-02-27
Marine Dock 1
Cause: The piping on a newly installed liquid separation vessel was incorrectly piped

Followup: Yes

Notes: Root Cause Analysis is being performed. DEQ Field Interview Report states that the facility failed to have control device in place to ensure that the newly installed piping was correctly piped prior to loading.
0.1 pounds
No LDEQ Reported

2007-02-27
Marine Dock 1
Cause: The piping on a newly installed liquid separation vessel was incorrectly piped

Followup: Yes

Notes: Root Cause Analysis is being performed. DEQ Field Interview Report states that the facility failed to have control device in place to ensure that the newly installed piping was correctly piped prior to loading.
0.1 pounds
107208

2008-07-15
FCCU Tubing
Cause: Tubing from a flow orifice plate broke off and released LPG.

Followup: No

Notes: Unit start-up was aborted, all fired sources were extinguished and a fire monitor was opened.
103090

2008-02-15
North Flare (EQT162 / EIQ 83-70)
Cause: A partial refinery-wide power failure occurred. This caused several units to shutdown and relieve to flare. A small exchanger fire also occurred.

Followup: No

Notes: Once maintenance personnel secured the power supply, Operations began bringing units back on line. Follow up report with same DEQ incident number lists different emission amounts.
0.1 pounds
115595

2009-06-11
Hydrocarbon feed exchanger
Cause: While cleaning the exchanger a piece of tubing blew out causing a release of naptha to the exchanger pad.

Followup: Yes

Notes: Residual naphtha was washed into the oily sewer. The exchanger was isolated.
1.1 pounds
113740

2009-03-26
tank-500-1
Cause: There is a frac tank that drains tank-500-1 when it overflows, after drainage the valve that drains the tank was left open.

Followup: No

Notes: roof drain was blocked. another vacuum truck was called in to drain the tank, and on-site cleanup was started.
3.6 pounds
143781

2012-10-12

Unit 59 North Flare
Cause: The initiating incident was a pump seal fire in the Gasoline Desulfurization Unit (Unit 55). The fire was fueled by a leaking seal on the pump. Extinguishing the fire was delayed by inability to close an EIV on the suction side of the pump. This resulted in emergency shutdown of the unit. Two other events also occurred on this day including an upset in Sulfur Plant Unit 234 and a flame-out of the North Flare. Due to the fire and emergency shutdown of the Gasoline Desulfurization Unit, the Fluid Catalytic Cracking Unit cut feed, sending vent gas to the North Flare. Process vent gas was sent to the North Flare which increased the steam to the flare suddenly, snuffing the flare out.

Followup: Yes

Notes: PDF too large to upload (109 pages) To re-light the North Flare, steam was gradually decreased and natural gas was added to the flare gas to allow the two available igniters to relight the North Flare. Parts to repair the North Flare pilot system were already on order when this incident occurred. The North Flare was taken out of service when the parts were received and repaired on October 31, 2012. Spare pilot and igniter assemblies are now in stock so that repairs can be made in a timely fashion if an incident like this is to occur again. Total amount of pollutants released was 59438.44 lbs, but 90% was claimed to be efficiently burned off, resulting in 5943.59 lbs that were actually released. The reportable quantity for Highly Reactive Volatile Organic Compounds (HRVOCs) (100 pounds) was exceeded during the 24 hour period.
15.2 pounds
152677

2013-12-04
Pipe leak at a pump in Unit 10 Crude unit
Cause: On December 4 at approximately 8:00 hours, there was a pinhole leak in 2 inch insulated piping. Corrosion caused the pinhole. Report states that none of the emitted pollutants are above reportable quantity levels. However, the RQ level for Flammable Liquids was exceeded during this event.

Followup: No

Notes: The unit was shut down to repair the leak as the piping could not be isolated. This piping will be routinely inspected and an upstream block valve was added to enable the isolation of this line. The material released was crude oil. It was entirely contained within the unit and routed to the Oily Water Sewer system.
1.0 pounds
152421

2013-11-18
Unit 10 Naphtha Splitter
Cause: On November 18 during startup of the Naptha Splitter, a leak was found in the vessel shell. As soon as the leak was discovered, the vessel was deinventoried and all liquid feeds were blocked in. The source of the leak was from a hole the side of a pencil, the cause of which is under investigation.

Followup: Yes

Notes: As soon as the leak was discovered, the vessel was deinventoried and all liquid feeds were blocked in. An incident investigation will determine the cause and recommendations to prevent future occurrences will be made.
2.3 pounds
151755

2013-10-21

Cause: During an excavation in the refinery's crude unit on October 21 at 16:44 hours, hydrocarbon impacted soil was discovered adjacent to an underground pump out line. The line was previously used to deinventory the unit for maintenance activities but was decommissioned prior to 2000. Samples were taken and analyzed for various pollutants. Amounts of several hydrocarbons (2-Methylnapthalene, Napthalene, Benzo(a)pyrene, Dibenz(a,h)anthracene and Aromatics>C10-C12) in at least one of the samples exceeded standards put in place Louisiana Risk Evaluation/Corrective Action Program.

Followup: No

Notes: A work plan is currently being developed to determine the area of contamination. Report does not indicate if additional excavation and soil disposal is planned.
149428

2013-06-29
flange on process line in U212 Platformer Unit
Cause: On June 29, a small leak and hydrogen fire was observed on the 48" flange on the process piping going from Cell 2 of the Unit 212 Charge Heater to Reactor #2. The leak was hair line sized in width and no larger than 1" around the circumference of the flange.

Followup: No

Notes: Steam was applied to the flange to extinguish the flame and the flange was hot bolted to secure the leak. Once investigation is complete, recommendations will be implemented. There were no known offsite impacts.
0.5 pounds
149432

2013-06-29
leak from process line in U263 piperack
Cause: On June 29, a pinhole leak was discovered in the LPG feedline from U212 to U222.

Followup: No

Notes: The line was purged with nitrogen and isolated for repairs. The Shift Emergency Response Team was activated and fire monitors were put on the leak to suppress any vapors. Reduced the U212 charge rate to minimize the leak. The line was isolated at battery limits in U222 and U212 to stop the leak. Once the investigation is complete, recommendations will be implemented.
0.5 pounds
148876

2013-05-22
U212 Platformer unit
Cause: On May 22, a small leak and hydrogen fire was observed on the 48" flange on the process piping going from cell 1 of the Unit 212 Charge Heater to Reactor #1. The leak was pinhole sized in width and no larger than 1" around the circumference of the flange. The emission point involved was a flange on a process line in the U212 Platformer unit.

Followup: Yes

Notes: Steam was applied to the flange to extinguish the flame and the flange was hot bolted to secure the leak. Once the investigation is complete, recommendations will be implemented. An additional followup on 10/23/13 corrected the initial followup report's emissions data regarding greenhouse gas releases.
0.0 pounds
157236

2014-07-07
Desalter Effluent Water Air Cooler (210-1335-02)
Cause: During a planned maintenance activity, a plug was mistakenly pulled from the Desalter Effluent Water Air Cooler (210-1335-02), which allowed sour water to be released into the slab (secondary containment).

Followup: No

Notes: Plug was reinstalled on Desalter Effluent Water Air Cooler (210-1335-02). Release was contained. An incident investigatino will result in recommendations designed to prevent the recurrence of this event.
156739

2014-06-10
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.
71.2 pounds