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• Chicago soil can contain high levels of lead and other heavy metals

  May 25, 2022 10:15 am by WBEZ=FMIllinois in the News
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  WBEZ-FM (Chicago, May 24) U of I Crop sciences professor Andrew Margenot's study found that 20% of the city exceeds the Illinois Environmental Protection Agency’s safe limit of 400 ppm for growing crops and backyard gardens. 

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