![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
8-Hour Ozone Maintenance Area Summary
(1997 Standard)
As of July 31, 2009
| Number of | Population | |||||
|---|---|---|---|---|---|---|
| Classification | Areas | Counties | ||||
| Moderate | 1 | 3 | 202,120 | |||
| Marginal | 9 | 40 | 8,712,140 | |||
| SUBTOTAL: | 10 | 43 | 8,914,260 | |||
| Former Subpart 1 | 49 | 109 | 16,528,388 | |||
| SUBTOTAL: | 49 | 109 | 16,528,388 | |||
| GRAND TOTAL: | 59 | 152 | 25,442,648 | |||
County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings.
On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order). The Subpart 1 areas in the Greenbook are listed as "Former Subpart 1" until the reclassification of the areas is finalized. Proposed reclassifications were published on January 16, 2009 (74 FR 2936).