Air Plan Approval; California; Mojave Desert Air Quality Management District; Oxides of Nitrogen
air-emissions · Rule · Published 2025-05-19 · Effective 2025-06-18 · CA · 90 FR 21236
Document
Document number
2025-08875
Federal Register citation
90 FR 21236
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2025-05-19
Effective date
2025-06-18
State
CA
EPA docket
EPA-R09-OAR-2024-0563
Abstract
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from industrial, institutional, and commercial boilers, steam generators, and process heaters. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or "Act").