Air Plan Approval; Arizona; Maricopa County Air Quality Department
air-emissions · Rule · Published 2021-10-04 · Effective 2021-11-03 · AZ · 86 FR 54628
Document
Document number
2021-21213
Federal Register citation
86 FR 54628
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2021-10-04
Effective date
2021-11-03
State
AZ
EPA docket
EPA-R09-OAR-2021-0369
Abstract
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Maricopa County Air Quality Department's (MCAQD) Rule 510 as part of the Arizona State Implementation Plan (SIP). These rule revisions concern updates to the maximum levels of ambient air pollution for the protection of public health and welfare. We are finalizing our proposed approval of this rule to regulate ambient air emissions under the Clean Air Act (CAA or the Act).