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Velsicol Chemical Corp. (Marshall Plant)

Site Information
Contact Information

Community Involvement Coordinator
Patricia Krause (krause.patricia@epa.gov)
312-886-9506 or 800-621-8431, ext. 69506, 9 a.m. - 4:30 p.m. CST

Remedial Project Manager
Bernard Schorle
312-886-4746 or 800-621-8431, ext. 64746


(where to view written records)

Marshall Public Library
612 Archer Ave.
Marshall, IL


The former Velsicol Chemical Plant is located on 420 acres in east central Illinois, one mile north of the city of Marshall. The plant produced products derived from petroleum by-products and the pesticide, chlordane. EPA cancelled the use of chlordane and Velsicol stopped manufacturing operations at the Marshall plant in 1988. Ground water, sediment, and soil at the site are contaminated with volatile organic compounds and pesticides.

The cleanup plan selected included:

Site Updates || Technical Documents | Five-Year Reviews

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Site Updates

November 2013

EPA has completed a review of the Velsicol Chemical Corp.  Superfund site at Illinois Route 1 south of Interstate 70 in the city of Marshall, Ill. The Superfund law requires regular checkups of sites that have been cleaned up – with waste managed on-site – to make sure the cleanup continues to protect people and the environment.

The review included an evaluation of background information, cleanup requirements, effectiveness of the cleanup, and maintenance and monitoring efforts. It also looked at ways to operate more efficiently.

EPA’s cleanup of volatile organic compounds (VOCs), pesticides and cadmium contamination consisted of excavating contaminated sediment from an unnamed tributary and two ponds and digging up contaminated soil from the former production plant area and backfilling these areas with clean material. Excavated materials were consolidated, treated and capped. A ground water collection drain was constructed for collecting contaminated ground water, which is treated on-site and discharged to the sewer. Monitoring of ground water and the surface cover conditions and operation and maintenance of the cleanup systems are being performed. Land-use and deed restrictions are in place. 

The review found that the cleanup continues to protect people and the environment. To make sure that the cleanup remains effective in the long-term the site must be maintained, the groundwater collection and treatment system must operate and the land use controls must continue. The next scheduled review will be in 2018. 

Technical Documents

Five-Year Reviews

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