Designation of Areas for Air Quality Planning Purposes; Indiana; Redesignation of the Southwest Indiana Sulfur Dioxide Nonattainment Area
air-emissions · Rule · Published 2021-03-02 · Effective 2021-04-30 · IN · 86 FR 12107
Document
Document number
2021-04195
Federal Register citation
86 FR 12107
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2021-03-02
Effective date
2021-04-30
State
IN
EPA docket
EPA-R05-OAR-2018-0732
Abstract
In accordance with the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is redesignating the Southwest Indiana nonattainment area, which consists of a portion of Daviess County and a portion of Pike County (Veale Township in Daviess County and Washington Township in Pike County), to attainment for the 2010 primary, health- based 1-hour sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). EPA is also approving Indiana's maintenance plan for the Southwest Indiana SO<INF>2</INF> nonattainment area. Indiana submitted the request for approval of the Southwest Indiana nonattainment area's redesignation and maintenance plan on October 24, 2018, and supplemental information on August 25, 2020. EPA has previously approved Indiana's attainment plan for the Southwest Indiana area.