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Sulfur Dioxide Nonattainment Areas
As of December 14, 2012Current and historical design value data can be found at http://www.epa.gov/airtrends/values.html
| Areas Listed Alphabetically | Classification | No. Counties NAA |
2010 Population |
EPA Region |
State |
|---|---|---|---|---|---|
| Armstrong Co, PA | Primary | 1 | 4,516 | 3 | PA |
| East Helena Area (Lewis and Clark Co.), MT | Primary, Secondary | 1 | 2,669 | 8 | MT |
| Hayden (Pinal County), AZ | Primary | 1 | 4,844 | 9 | AZ |
| Laurel Area (Yellowstone County), MT | Primary | 1 | 6,525 | 8 | MT |
| Piti, GU | Primary | 1 | 1,000 | 9 | GU |
| Salt Lake Co, UT | Primary, Secondary | 1 | 1,029,655 | 8 | UT |
| Tanguisson, GU | Primary | 1 | 1,000 | 9 | GU |
| Tooele Co, UT | Primary, Secondary | 1 | 58,218 | 8 | UT |
| Warren Co, NJ | Primary, Secondary | 1 | 108,696 | 2 | NJ |
| 9 Total Areas | 9 | 1,217,123 | |||
The county total is adjusted to count a single county only once (in the case where part of a county may be in multiple maintenance areas). Any multi-state areas are counted in the nonattainment report until all state areas have been redesignated.
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