The Environmental Protection Agency (EPA) is proposing to approve the second ten-year maintenance plans for the Ajo and Morenci areas in Arizona for the 1971 National Ambient Air Quality Standards (NAAQS) for sulfur dioxide (SO2 ), and to correct an error in the description of the Ajo, Arizona SO2 maintenance area in the Code of Federal Regulations.
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Approval of Arizona Air Plan Revisions; Ajo and Morenci, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plans and Technical Correction
The Environmental Protection Agency (EPA) is proposing to approve the second ten-year maintenance plans for the Ajo and Morenci areas in Arizona for the 1971 National Ambient Ai...
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82 FR 2308
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“Approval of Arizona Air Plan Revisions; Ajo and Morenci, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plans and Technical Correction,” thefederalregister.org (January 9, 2017), https://thefederalregister.org/documents/2016-31636/approval-of-arizona-air-plan-revisions-ajo-and-morenci-arizona-second-10-year-sulfur-dioxide-maintenance-plans-and-techn.