Summary

EPA is approving a state implementation plan (SIP) submission from the State of Hawaii regarding certain Clean Air Act (CAA or “Act”) requirements related to interstate transport for the 2008 ozone national ambient air quality standards (NAAQS). The interstate transport requirements consist of several elements; this approval pertains only to provisions requiring that SIPs prohibit sources or other types of emissions activity in one state from emitting any air pollutant in amounts that will contribute significantly to nonattainment and interference with maintenance of the 2008 ozone NAAQS in other states. EPA is approving Hawaii's August 6, 2015 SIP submittal on the basis that it addresses two requirements of CAA section 110(a)(2)(D)(i)(I), which we refer to as prong 1 (significant contribution to nonattainment of the NAAQS in any other state) and prong 2 (interference with maintenance of the NAAQS in any other state). EPA refers to SIP revisions addressing the requirements of section 110(a)(2)(D)(i)(I) as “good neighbor SIPs” or “interstate transport SIPs.”

Action

Final Rule

Dates

This rule is effective on September 13, 2019.

Addresses

EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2018-0806. All documents in the docket are listed on the www.regulations.gov website. Although listed in the index, some information is not publicly available, i.e., 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 at www.regulations.gov, or please contact the person identified in the FOR FURTHER INFORMATION CONTACT section for additional availability information.

For Further Information Contact

Wienke Tax (tax.wienke@epa.gov), Air Planning Office (AIR-2), EPA Region IX, 75 Hawthorne Street, San Francisco, CA, 94105; (415) 947-4192.