Summary

EPA is approving most elements of state implementation plan (SIP) revisions submitted by California to address Clean Air Act (CAA or “Act”) requirements for the 2012 annual fine particulate matter (PM_2.5) national ambient air quality standards (NAAQS or “standards”) in the Plumas County Moderate PM_2.5 nonattainment area (“Portola nonattainment area”). The SIP revisions are the “Portola Fine Particulate Matter (PM_2.5) Attainment Plan” submitted on February 28, 2017, and the 2019 and 2022 transportation conformity motor vehicle emission budgets (“budgets”) submitted on December 20, 2017. We refer to these submittals collectively as the “Portola PM_2.5 Plan” or “Plan.” The EPA is not taking action at this time on the contingency measures in the Portola PM_2.5 Plan.

Dates

This rule is effective on April 24, 2019.

Addresses

EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2017-0728. 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

John Ungvarsky (ungvarsky.john@epa.gov), EPA Region IX, (415) 972-3963