An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Lindsay Light Superfund Sites

EPA first discovered thorium contamination at Lindsay Light's Illinois Street location in 1993. Further investigations found soil contamination at several locations in the Streeterville neighborhood of Chicago  and directly across the Chicago River at the New Eastside neighborhood. To protect workers who might come into contact with radiation and thorium contamination in subsurface soil, EPA and the city of Chicago require anyone planning to work in subsurface soil in these areas to monitor the soil. The resulting reports are posted here.

Lindsay Light Cleanup Video