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Congressional District # 15


EPA ID# IL1570024157
Last Updated: November, 2014

Site Description

Chanute Air Force Base (AFB) is a proposed National Priorities List (NPL) site located in the north central portion of Champaign County in east central Illinois.  The site is being addressed by the Air Force under the oversight of the Illinois Environmental Protection Agency (Illinois EPA). The main base covers 2,125 acres in the village of Rantoul.  A small stream, Salt Fork Creek, flows along the southern perimeter and directly through the southeastern corner of the base.  The southeastern corner of the base is known as Operable Unit (OU) 2, which is the location of past waste disposal activities.  The primary sources of hazardous substances within OU 2 include Landfills 1, 2, 3, and 4; Fire Training Areas (FTA) 1 and 2; and Buildings 916, 922, 927, 932, 975, and 995, which contained either oil water separators, underground storage tanks (USTs), sludge pits, or a combination of those items.  The primary mission of the base was to provide military and technical training for Air Force personnel and civilian employees and for other Department of Defense personnel.  The training activities focused on operation and maintenance of military aircraft and ground support equipment.

Chanute AFB was constructed in 1917 and initially served as a pilot training facility and a storage depot for aircraft engines and paint.  The base served as a training school for all Air Corps mechanics from 1922 to 1938.  During World War II, technical training operations focused on aircraft maintenance and metal processing.  Military flight operations were terminated at Chanute AFB in 1971, and base closure began in 1990 in response to an order issued by the Secretary of Defense.  All military operations at the base ceased in September 1993, and portions of the base became available for commercial and other uses.  The Air Force Real Property Agency, known as the Air Force Base Conversion Agency prior to 2002, currently oversees the base closure.

OU2 was proposed for the NPL in December 2000, but never finalized.  OU1, which has most of the uncontaminated acreage on the base, is not included in the proposed NPL parcel.

Site Responsibility

The site is being addressed by the Air Force under the oversight of Illinois EPA.  For current information on cleanup progress, see fact sheets posted on the Illinois EPA website: http://www.epa.state.il.us/community-relations/fact-sheets/chanute-afb/index.html

Threats and Contaminants

When the site was proposed for the NPL, migration of contamination from the sources in OU2 into Salt Fork Creek was the primary concern. Sample analytical results also indicated migration of hazardous substances from Landfills 1 and 2 into Salt Fork Creek.  The Illinois Environmental Protection Agency (IEPA) collected sediment samples along Salt Fork Creek and analyzed the samples for semivolatile organic compounds (SVOC) and metals.  A sediment sample collected directly downstream of Landfills 1 and 2 contained bis(2 ethylhexyl)phthalate, polycyclic aromatic hydrocarbons (PAHs), and lead concentrations at elevated levels.  During excavation of test pits in Landfills 1 and 2, volatile organic compounds, SVOCs, dioxins and furans, pesticides and polychlorinated biphenyls, and metals were detected in the soil and/or groundwater/leachate in Landfills 1 and 2.

Landfills 1, 2 and 3 were capped by the end of 2003.  These caps eliminated all surface runoff from the waste materials and slowed leachate migration into the creek.  Leachate migration will be further reduced when the Air Force starts up the leachate collection systems on Landfills 1, 2, and 3.  The Remedial Investigation of Salt Fork Creek, completed in November 2007, shows that the landfill caps have been very effective at cleaning up creek sediments.  The risk assessment shows that no further cleanup action will be required to the creek itself for its intended recreational reuse.  Consequently, EPA and Illinois EPA agreed in January 2008 that the fence around Salt Fork Creek could be removed by the Air Force.

In 2000 the Air Force signed a CERCLA Interim ROD in which it committed to construct a RCRA (hazardous waste) cap on Landfill 4.  The cap has been completed.  Access to Landfill 4 is controlled by a chain-link fence, which was completed and locked in August 2007.

The Interim ROD also required a leachate collection and treatment system at Landfills 1, 2, and 3.  The collection systems were completed in 2005, but were not turned on.  The Air Force began leachate collection at Landfill 2 in 2010, but has stated that it does not intend to start up the system at the other two landfills.

Cleanup Progress

EPA notified the Air Force in May 2010 that it would no longer be providing regulatory oversight at Chanute because the site has not yet been added to the NPL.  In addition, the Air Force has a good working relationship with the State of Illinois and U.S. EPA believes that it would be more efficient if cleanup efforts were conducted under Illinois EPA oversight.  If, however, the Chanute site is added to the NPL in the future, it would require the negotiation of a Federal Facility Compliance Agreement and direct U.S. EPA oversight of the cleanup.

Cleanup at Chanute is being done by the Air Force under Illinois EPA oversight.  For current information on cleanup progress, see fact sheets posted on the Illinois EPA website: http://www.epa.state.il.us/community-relations/fact-sheets/chanute-afb/index.html 


Property Reuse

Much of the property was transferred prior to 2000, and has taken on a wide variety of uses.  By acreage and numbers the largest reuse has been the base housing, which is fully utilized in a mixture of rental and individual ownership.  Rantoul is within commuting distance of Champaign-Urbana, the home of the University of Illinois.

Notable commercial tenants on the former base include AT&T, Bell Sports/Riddell and the University of Illinois.  Hangar Four is occupied by the Octave Chanute Aerospace Museum.

The airfield was transferred to the Village of Rantoul Department of Aviation on August 17, 2007.  The Aviation Department currently operates the airfield as a general aviation airport, and the transfer of ownership will enable it to receive airport improvement grant funds from the FAA and Illinois DOT.


Remedial Project Manager, U.S. EPA
pamela molitor (molitor.pamela@epa.gov)
(312) 886-3543





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This profile provides you with information on EPA's cleanup progress at this Superfund site.


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