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8-Hour Ozone (2015) Attainment Date Extensions

Data is current as of January 31, 2023
Ordered by Classification

Click on the 'FR' link to view the Federal Register Notice


MARGINAL

Uinta Basin, UT
Proposed Approval 04/13/2022 87 FR 21842
Final Approval 10/07/2022 87 FR 60897 Effective: 11/07/2022


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