Air Quality Designation for the 2010 Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard; Arkansas; Redesignation of the Independence County Area
air-emissions · Rule · Published 2019-03-13 · Effective 2019-04-12 · AR · 84 FR 8986
Document
Document number
2019-04547
Federal Register citation
84 FR 8986
CFR reference
40 CFR 81
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2019-03-13
Effective date
2019-04-12
State
AR
EPA docket
EPA-R06-OAR-2018-0624
Abstract
On April 20, 2018, the State of Arkansas, through the Arkansas Department of Environmental Quality (ADEQ) submitted a request for the Environmental Protection Agency (EPA) to assess new available information and redesignate the Independence County unclassifiable area (hereinafter referred to as the "County" or "Area") for the 2010 sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) to attainment/unclassifiable. Pursuant to the Clean Air Act (CAA), the EPA is approving the State's request and redesignating the Area to attainment/unclassifiable for the 2010 primary SO<INF>2</INF> NAAQS based on EPA's review confirming that the State's modeling results appropriately characterize the air quality in Independence County, Arkansas and that predicted ambient SO<INF>2</INF> concentrations are below this NAAQS.