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Claims Dismissed Against American Ecology Corp.

American Ecology Corp. said an Illinois judge dismissed claims by state officials against the company in a case involving a hazardous-waste site in Sheffield, Ill.

The ruling ended 11 years of litigation between the state and American Ecology, an Agoura Hills-based waste-management concern.

Judge Alexander T. Bower ruled that efforts by the state of Illinois and Bureau County to seek cleanup costs from American Ecology were preempted by the federal government. Last fall, the U.S. Environmental Protection Agency agreed to a plan for cleaning up the site that would cost American Ecology $13 million over 30 years.

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The 45-acre Sheffield site, about 120 miles west of Chicago, was closed in the early 1980s after nearby ground water was contaminated by chemical waste. The site was operated by the company’s U.S. Ecology subsidiary.

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