Approval and Limited Approval and Limited Disapproval of Air Quality Implementation Plans; California; Northern Sonoma County Air Pollution Control District; Stationary Source Permits

The Environmental Protection Agency (EPA) is finalizing action on five permitting rules submitted as a revision to the Northern Sonoma County Air Pollution Control District (NSCAPCD or District) portion of the applicable state implementation plan (SIP) for the State of California pursuant to requirements under the Clean Air Act (CAA or Act). We are finalizing a limited approval and limited disapproval of two rules; we are finalizing approval of the remaining three permitting rules; and we are deleting three rules. The amended rules govern the issuance of permits for stationary sources, including review and permitting of minor sources, major sources and major modifications under part C of title I of the Act. The limited disapproval actions trigger an obligation for EPA to promulgate a Federal Implementation Plan (FIP) for the specific New Source Review (NSR) program deficiencies unless California submits and we approve SIP revisions that correct the deficiencies within two years of the final action.