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Laws and Rules

The Indiana Department of Environmental Managements (IDEM’s) Office of Air Quality (OAQ) implements federal and state air pollution control regulations in Indiana, including:

OAQ works with the Indiana Environmental Rules Board concerning the development of new and amended rules, as appropriate. OAQ also works to develop nonrule policy documents (NPDs), which are documents that clarify IDEM's interpretation of an environmental statute or rule.

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