Environmental Protection Agency· Rule· 91 FR 53720
Air Plan Approval; Arizona; Attainment Plan for the Hayden SO2 Nonattainment Area for the 1971 and 2010 Sulfur Dioxide National Ambient Air Quality Standards
effective in 32d
The Environmental Protection Agency (EPA) is finalizing approval of revisions to the Arizona state implementation plan (SIP) for attaining the 1971 and 2010 sulfur dioxide (SO 2 ) national ambient air quality standards (NAAQS or "standards") in the Hayden SO 2 nonattainment area. These SIP revisions, collectively…
Owner check — Compliance action: verify whether products, materials, permits, reporting, or customer notices need updating.