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2007-07-01 19:44 |
713×514× (262181 bytes) |
Beland |
Counties of the [[United States]] that violated the 8-hour [[ozone]] safety standard of the [[United States Environmental Protection Agency]], as of June 2007, or are designated as "maintenance" areas, which require ongoing attention to avoid violating th
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| Date/Time | Thumbnail | Dimensions | User | Comment |
current | 14:30, 15 June 2015 | ![Thumbnail for version as of 14:30, 15 June 2015](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5f/US-ozone-non-attainment-2007-06.png/120px-US-ozone-non-attainment-2007-06.png) | 713 × 514 (256 KB) | commons>BD2412 | Transferred from en.wikipedia |
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