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The Lincoln Stone Quarry, where coal ash was dumped for decades, near the Des Plaines River on March 11, 2026, in Joliet. (Brian Cassella/Chicago Tribune)
The Lincoln Stone Quarry, where coal ash was dumped for decades, near the Des Plaines River on March 11, 2026, in Joliet. (Brian Cassella/Chicago Tribune)
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The plan failed to address excess groundwater contamination and did not demonstrate that sufficient funds were available, the IEPA said.
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