Approval and Promulgation of Air Quality State Implementation Plans; California; Chico Redesignation Request and Maintenance Plan for the 2006 24-Hour PM2.5 Standard
air-emissions · Rule · Published 2018-07-11 · Effective 2018-08-10 · CA · 83 FR 32064
Document
Document number
2018-14445
Federal Register citation
83 FR 32064
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2018-07-11
Effective date
2018-08-10
State
CA
EPA docket
EPA-R09-OAR-2018-0181
Abstract
The Environmental Protection Agency (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<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS or "standard"). The EPA is also taking final action to approve the PM<INF>2.5</INF> 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.