By Jeryl L. Olson, Eric E. Boyd, and Craig B. Simonsen

In a not unexpected final rule issued today by the U.S. Environmental Protection Agency (EPA) it has listed the “Chicago-Naperville, IL-IN-WI Nonattainment Area” as marginal nonattainment. 77 Fed. Reg. 34221 (June 11, 2012). The rulemaking promulgates the initial air quality designations for twelve counties in Illinois, Indiana, and Wisconsin

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