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8-Hour Policy Guidance

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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

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