Summary

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).

Action

Final rule.

Dates

This final rule is effective on July 9, 2018.

For Further Information Contact

Ashley Graham, EPA Region IX, (415) 972-3877, graham.ashleyr@epa.gov.

The EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2017-0537. All documents in the docket are listed on the https://www.regulations.gov website. Although listed in the index, some information is not publicly available, e.g., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form. Publicly available docket materials are available through https://www.regulations.gov, or please contact the person identified in the FOR FURTHER INFORMATION CONTACT section for additional availability information.