Summary
EPA is proposing to approve, as part of the State Implementation Plan (SIP) for the State of Arizona, the second 10-year maintenance plan for the Douglas maintenance area for the 1971 National Ambient Air Quality Standards (NAAQS or “standards”) for sulfur dioxide (SO2).
Action
Proposed Rule
For Further Information Contact
Ashley Graham (graham.ashleyr@epa.gov), EPA Region IX, (415) 972-3877