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Area Designations for 1997 Fine Particle (PM_2.5) Standards

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Region 5: State Designations
Illinois PM_2.5 Designations Map

Illinois PM_2.5 Designations Map

The map shows that Madison, Monroe, and St. Clair Counties, as well as part of Randolph County, are within the Saint Louis, MO-IL nonattainment area. Cook, Du Page, Kane, Lake, McHenry, and Will Counties, as well as parts of Grundy and Kendall Counties, are within the Chicago-Gary-Lake County, IL-IN nonattainment area. The remainder of the state has not been designated nonattainment.

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