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Ground-Level Ozone Designations for the 1997 Air Quality Standards

This is an unofficial list of tribes in 8-hour ozone nonattainment areas as of April 15, 2004. Official nonattainment boundaries are specified in 40 CFR Part 81. This document in no way establishes tribal territories.

Map showing rough locations of tribes in nonattainment areas across the United States Inset map showing rough locations of tribes in nonattainment areas in southern California.

Tribes in 8-Hour Ozone Nonattainment Areas

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Tribes in 8-Hour Ozone Unclassifiable Areas

Tribal Recommendations and EPA Responses

8/11/03 National Tribal Air Association Memo:
Recommendations on Attainment/Nonattainment Areas under the 8-Hour Ozone Standard (PDF) (4 pp, 197KB)


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