Marathon Pipeline Release - Wood River to Patoka System

 
Site Contact:
Adam Vrabec
On-Scene Coordinator

(vrabec.adam@epa.gov)

Site Location:
Edwardsville, IL 62025
www.epaosc.org/MarathonEdwardsville
NRC#: 1330806

For press inquiries, please contact Rachel Linduska, U.S. EPA Public Affairs Officer, at Linduska.Rachel@epa.gov.

Updates

March 18
Air monitoring at the site has been limited due to rain and inclement weather. After today, U.S. EPA will suspend air monitoring since all pooled oil has been recovered from the wetland. Marathon will continue air monitoring until all work adjacent to the spill site is complete. EPA will provide air monitoring support if any odor complains are received or if Marathon air monitoring detects anything above action levels.

Marathon has recovered 17,765 barrels of oil/water mix and 5,320 cubic yards of suspected contaminated material.

March 17
U.S. EPA continues to conduct air monitoring.

Marathon has recovered 15,659 barrels of oil/water mixture and 3,000 cubic yards of contaminated soil.

March 16
U.S. EPA continues to conduct air sampling and monitoring. Low level detections of benzene were found in the wetland area near the spill. EPA also received an odor complaint from residents nearby and conducted air monitoring around the home. 

Marathon continues to collect oil. So far, 14,270 barrels of oil/water mixture have been recovered and 2,240 cubic yards of soil have been excavated. Cleanup is ongoing along the creek/canal. Marathon continues maintenance and cleaning of boom deployed in the creek.

EPA attended the Edwardsville city council meeting on March 15. 

March 15
U.S. EPA continues to conduct air sampling and monitoring.

To date, Marathon has collected approximately 11,075 barrels of oil/water mixture and about 518 barrels of oil from the pipeline.

Marathon is working to collect oil at a wetland area near the spill site. EPA worked with the Army Corps of Engineers, Fish and Wildlife Service, and the Illinois Department of Natural Resources to approve a plan to permit Marathon to build a road along the edge of the wetland to give trucks access to remove the contaminated materials.

Likely due to the wetland excavation, air monitoring detected benzene early this morning. In response, Marathon personnel will wear appropriate personal protective equipment and EPA added additional air monitoring equipment and sampling.

March 14
U.S. EPA has established 14 air monitoring/sampling locations near the spill release and downstream. The agency anticipates air sampling results for volatile organic compounds (VOCs) will be posted to the website shortly. Results for Lower Explosive Limit, benzene, Hydrogen Sulfide and others should be available later this week.

U.S. EPA and Marathon initiated surface water sampling in the Cahokia Creek and Cahokia Diversion Channel. Water sampling results will be posted to the website when available.

U.S. EPA continues to work with federal, state and local responders as well as Marathon to address the oil spill in Cahokia Creek. Marathon has recovered more than 5,800 barrels of oil and water from the creek. Marathon established 10 booming locations along 9 miles of the Cahokia Creek and Cahokia Diversion Channel. These locations are prepared to collect oil via vacuum trucks and oil skimmers.

March 13
U.S. EPA continues to work with federal, state and local responders as well as Marathon to address the oil spill in Cahokia Creek. Marathon has recovered more than 2,000 barrels of oil and water from the creek.

U.S. EPA is conducting air monitoring around the impacted area and in the surrounding community. U.S. EPA created water sampling plans and has reviewed Marathon Pipeline groundwater sampling plans and forwarded comments to IEPA for review and approval.

U.S. EPA will post air monitoring data as it becomes available.

March 12
U.S. EPA continues to work with federal, state and local responders as well as Marathon Pipe Line to address the oil spill in Cahokia Creek. U.S. EPA estimates that oil has impacted seven miles of the creek but is currently contained two miles from the Mississippi River. Marathon has recovered more than 900 barrels of crude oil and water from the creek. The company continues to recover oil from the creek with federal and state oversight.

U.S. EPA is conducting air monitoring around the impacted area and in the surrounding community. U.S. EPA is also assisting with water sampling plans.

U.S. EPA will post air monitoring data as it becomes available to this website.

Background
On March 11, at 9:50 a.m. CST, Marathon Pipe Line reported a release of about 3,000 barrels of crude oil from a 22 inch pipeline near Edwardsville, Illinois.  The company reported the cause of the release was due to equipment failure and shut down the pipeline. Oil has impacted the Cahokia Creek, which leads to the Mississippi River.

The spilled material is ‘Wyoming Asphaltic Sour’ crude oil. The pipeline is estimated to be four feet below surface near the spill location. Initial assessments indicated oil was emanating from the embankment of the Cahokia Creek, and the rate of discharge into the water has lessened. Oil is impacting the full breadth of the creek and response efforts are ongoing. Marathon operations are attempting to contain the oil prior to reaching the Mississippi River. As of 18:00 CST, product was observed at a booming location near Route 111, approximately 2.5 miles from the Mississippi River confluence. Marathon Pipe Line has deployed containment boom in several locations on the creek to stop floating oil from traveling further down the creek. This assists in recovery of the oil.