Air Plan Approval; Arizona; Attainment Plan for the Hayden SO2 Nonattainment Area for the 1971 and 2010 Sulfur Dioxide National Ambient Air Quality Standards

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Key Dates

Comment Period OpensMar 4, 2026

Comment Period ClosesApr 4, 2026

Type	Title	Posted	Comments	Status
Proposed Rule	Air Quality State Implementation Plans; Approvals and Promulgations: Arizona; Attainment Plan for the Hayden SO2 Nonattainment Area for the 1971 and 2010 Sulfur Dioxide National Ambient Air Quality Standards FR Doc: 2026-04339	Mar 4, 2026

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