Limited Approval, Limited Disapproval of Arizona Air Plan Revisions, Hayden Area; Sulfur Dioxide Control Measures-Copper Smelters
air-emissions · Rule · Published 2020-11-05 · Effective 2020-12-07 · AZ · 85 FR 70483
Document
Document number
2020-23031
Federal Register citation
85 FR 70483
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2020-11-05
Effective date
2020-12-07
State
AZ
EPA docket
EPA-R09-OAR-2020-0173
Abstract
The Environmental Protection Agency (EPA) is finalizing a limited approval and limited disapproval of a revision to the Arizona State Implementation Plan (SIP). This revision concerns sulfur dioxide (SO<INF>2</INF>) emissions from the primary copper smelter in Hayden, Arizona. Specifically, we are taking action on a local rule submitted by the Arizona Department of Environmental Quality (ADEQ) that regulates these emissions under the Clean Air Act (CAA or the Act).