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Keystone Corridor Ground Water Contamination

Site Information
Contact Information

Community Involvement Coordinator
Heriberto León (leon.heriberto@epa.gov)
312-886-6163 or 800-621-8431, ext. 66163

Remedial Project Manager
Leslie Blake (blake.leslie@epa.gov)
312-353-7921 or 800-621-8431, ext. . 37921

IDEM Project Manager
Office of Land Quality
Douglas Petroff
IDEM toll-free

Mark Johnson
312-353-9298 or 800-621-8431, ext. 39298


The Keystone Corridor Ground Water Contamination site is located in Indianapolis, Indiana. The site consists of the Fall Creek well field and potential sources of the ground water contamination.  The ground water has been affected by a chlorinated solvent plume. The site poses a risk to the community due to actual and potential contamination in municipal wells and in several monitoring wells.

The chlorinated solvents found in the Keystone Corridor ground water plume include the following volatile organic compounds (VOCs): tetrachloroethylene (PERC), trichloroethylene (TCE), cis-1,2-dichloroethene (cis-1,2-DCE), and vinyl chloride. The extent of the plume has not been completely determined at this time, but it is estimated to be approximately 4500 feet long (north to south) and approximately 1500 feet wide (east to west).

The local water company is Citizens Water, and it operates nine active municipal wells in the Fall Creek well field.  VOCs have historically been detected in five of the wells. These wells are among the oldest in the well system dating back to the 1920's and contribute up to 44 percent of water intake from the well field. In one of the five wells, vinyl chloride has been detected above the Safe Drinking Water Act Maximum Contaminant Level (MCL). However, that well has been removed from service. The water company treats all water and continuously monitors and blends the water before distributing it to the public. A portion of the water company’s service area uses the water from the remaining four active wells.

Investigations by the Indiana Department of Environmental Management (IDEM) could not determine any one specific source or sources of contamination due to the complex geology, the number of potential sources, and the comingling of the contamination.  Over forty known users or handlers of solvents in the area have been identified as possible sources.

What can you do to help with cleanups?

EPA has been working at a nearby former industrial dry cleaning facility called Tuchman Cleaners since 2012 and has an ongoing removal action there under the Superfund Emergency Response Program.  Approximately 29,850,000 gallons of water were pumped and treated from the contaminated aquifer from December 1995 to December 2002 at Tuchman Cleaners. One municipal well has been taken out of production because of its proximity to the path of the plume. EPA is currently installing vapor mitigation systems at residential properties that are above screening levels.

See more information on EPA’s response activities at the Tuchman Cleaners site.

Site Updates || Fact Sheets || Technical Documents |

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Site Updates

August 2015

EPA requests your access agreement

EPA is planning to conduct groundwater, soil and air sampling early this fall.  This sampling is being conducted as part of the remedial investigation for the site.  In late July, access request agreements were sent to property owners at locations where it was determined that samples may be collected during the field investigation. If you received an access agreement to sample on your property, please sign and date the access agreement and return it to us in the postage-paid envelope that was provided by no later than September 18th.

The results from the remedial investigation will be used to try to determine the source(s) of the contamination and identify appropriate long-term measures for groundwater remediation.  Once the investigation is completed, EPA will inform the public of its findings and present recommendations on future actions.

EPA wants to talk to you about the cleanup at Keystone Corridor

EPA and ATSDR staff would like to interview people who live or work near the boundaries of the Keystone Corridor September 23 - 25. The information gathered during these anonymous interviews will be used to draft a Community Involvement Plan. The CIP will help the EPA with ideas from your community on how to keep everyone informed and collect your opinions throughout the Superfund cleanup process. It will also give us your suggestions about potential community activities for the EPA to meaningfully address community needs, concerns and expectations. Contact Community Involvement Coordinator Heriberto León by email or at 312-886-6163, so that we can set up an appointment near your community.


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