Air Plan Approval; California; San Diego County Air Pollution Control District; Oxides of Nitrogen
air-emissions · Rule · Published 2023-08-23 · Effective 2023-09-22 · CA · 88 FR 57361
Document
Document number
2023-18110
Federal Register citation
88 FR 57361
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2023-08-23
Effective date
2023-09-22
State
CA
EPA docket
EPA-R09-OAR-2022-0682
Abstract
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Diego County Air Pollution Control District (SDCAPCD) portion of the California State Implementation Plan (SIP). The California Air Resources Board (CARB) submitted the rule, on behalf of SDCAPCD, to the EPA as part of the requirement to implement major source reasonable available control technology (RACT) for emissions of oxides of nitrogen (NO<INF>X</INF>) for the San Diego County ozone nonattainment area. This revision concerns NO<INF>X</INF> emissions from boilers, process heaters, and steam generators. We are approving a local rule to regulate these emission sources under the Clean Air Act (CAA or the "Act").