Air Plan Approval; Arizona; Maricopa County Air Quality Department and Pima County Department of Environmental Quality
air-emissions · Rule · Published 2020-07-15 · Effective 2020-08-14 · AZ · 85 FR 42726
Document
Document number
2020-14001
Federal Register citation
85 FR 42726
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2020-07-15
Effective date
2020-08-14
State
AZ
EPA docket
EPA-R09-OAR-2019-0633
Abstract
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Maricopa County Air Quality Department (MCAQD) and Pima County Department of Environmental Quality (PCDEQ) portions of the Arizona State Implementation Plan (SIP). These revisions concern emissions of particulate matter (PM) from nonmetallic mineral processing, inactive mineral tailings and slag storage. We are approving local rules that regulate these emission sources under the Clean Air Act (CAA or the Act).