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Ground-level Ozone Designations Policy Guidance
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2008 Standards
Area Designations for the 2008 Revised Ozone National Ambient Air Quality Standards (PDF) (6 pp, 99KB) December 4, 20081997 Standards
Extension for States and Tribes to Submit Air Quality Designation Recommendations for the 8-Hour Ozone National Ambient Air Quality Standards (NAAQS) (PDF) (3 pp, 780KB) February 27, 2003
Schedule for 8-Hour Ozone Designations and its Effect on Early Action Compacts (PDF) (9 pp, 154KB) November 14, 2002
Guidance on 8-Hour Ozone Designations for Indian Tribes (PDF) (8 pp, 453KB) July 18, 2000
Guidance for Determining Boundaries of 8-Hour Ozone Attainment and Nonattainment Areas (PDF) (3 pp, 25KB) March 28, 2000
Boundary Guidance on Air Quality Designations for the 8-Hour Ozone National Ambient Air Quality Standards (PDF) (12 pp, 61KB) March 28, 2000
8-Hour Designations (EPA status update) (PDF) (2 pp, 16KB) March 28, 2000
A-99-29 I-B EPA Correspondence to Persons Outside the Agency