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Tribal Policy Documents

National Ambient Air Quality Standards (NAAQS) Designation Process

In December 2011, we released two key guidance documents related to the process for designating areas of Indian country. The first document, Guidance to Regions for Working with Tribes during the National Ambient Air Quality Standards (NAAQS) Designations Process3 provides guidance to the EPA regional offices for working with federally recognized Indian tribes regarding the designations process for Indian country.

The second document, Policy for Establishing Separate Air Quality Designations for Areas of Indian Country sets forth the EPA’s policy regarding designating particular areas of Indian country separately from surrounding or adjacent areas when a tribe requests a separate designation. We also released a guidance manual to support tribes’ understanding of, and participation in, the recommendation process for designating areas for the NAAQS for Indian country. This document does not develop new policy, but more clearly explains “existing policy.” Please see these documents for a greater understanding of the designation recommendation process as it relates to Indian country. 

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