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Sulfur Dioxide Nonattainment Area/State/County Report
As of December 14, 2012| Armstrong Co, PA | |
| PENNSYLVANIA (Region III) | |
| Armstrong Co (P) | |
| Madison Twp, Mahoning Twp, Boggs Twp, Washington Twp, Pine Twp | |
| East Helena Area (Lewis and Clark Co.), MT | |
| MONTANA (Region VIII) | |
| Lewis And Clark Co (P) | |
| Hayden (Pinal County), AZ | |
| ARIZONA (Region IX) | |
| Pinal Co (P) | |
| Laurel Area (Yellowstone County), MT | |
| MONTANA (Region VIII) | |
| Yellowstone Co (P) | |
| Piti, GU | |
| GUAM (Region IX) | |
| Piti (P) | |
| Salt Lake Co, UT | |
| UTAH (Region VIII) | |
| Salt Lake Co | |
| Tanguisson, GU | |
| GUAM (Region IX) | |
| Tanguisson (P) | |
| Tooele Co, UT | |
| UTAH (Region VIII) | |
| Tooele Co (P) | |
| Portions of Tooele County | |
| Warren Co, NJ | |
| NEW JERSEY (Region II) | |
| Warren Co (P) | |
| Northeast Pennsylvania-Upper Delaware Valley Interstate AQCR | |
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