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Region 10: the Pacific Northwest
Serving the people of Alaska, Idaho, Oregon, Washington and Native Tribes
The Clean Air Act authorizes EPA to treat eligible federally-recognized Indian Tribes in the same manner as a state for implementing and managing air quality programs.
Eligibility Determinations and the Tribal Authority Rule
The table below shows Region 10 Tribes that have established eligibility for Treatment in the Same Manner as a State for sections of the Clean Air Act, as of May 1, 2006.
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