The Environmental Protection Agency (EPA) is taking final rulemaking action 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 (``standards'') for sulfur dioxide (SO2 ).
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Air Plan Approval; Douglas, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plan
The Environmental Protection Agency (EPA) is taking final rulemaking action to approve, as part of the State Implementation Plan (SIP) for the State of Arizona, the second 10-ye...
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83 FR 26596
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“Air Plan Approval; Douglas, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plan,” thefederalregister.org (June 8, 2018), https://thefederalregister.org/documents/2018-12300/air-plan-approval-douglas-arizona-second-10-year-sulfur-dioxide-maintenance-plan.