Summary

EPA is taking final action to approve, as a revision of the California state implementation plan (SIP), the State's request to redesignate the Chico nonattainment area to attainment for the 2006 24-hour fine particulate matter (PM_2.5) National Ambient Air Quality Standard (NAAQS or “standard”). The EPA is also taking final action to approve the PM_2.5 maintenance plan and the determination that contributions from motor vehicle emissions in the Chico nonattainment area are insignificant. The EPA is approving this revision because it meets the requirements of the Clean Air Act (CAA or “the Act”) and EPA guidance for such plans.

Action

Final Rule

Dates

This rule will be effective on August 10, 2018.

Addresses

EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2018-0181. All documents in the docket are listed on the 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 www.regulations.gov, or please contact the person identified in the FOR FURTHER INFORMATION CONTACT section for additional availability information.

For Further Information Contact

Ginger Vagenas (vagenas.ginger@epa.gov), Air Planning Office (AIR-2), Environmental Protection Agency, Region IX, (415) 972-3964