WILLOWBROOK, Ill. (WLS) -- A community group said Wednesday the Environmental Protection Agency has known about the emissions of a cancer-causing chemical from what is now the Sterigenics plant in southwest suburban Willowbrook since 1984.
The group "Stop Sterigenics" used a Freedom of Information Act request to obtain a letter from the agency dated July of 1984.
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That letter expresses concern over ethylene oxide levels being "higher than desirable" at the Willowbrook location.
The group is continuing to call for an immediate shutdown of the Sterigenics plant.