Air Plan Approval; Illinois; Base Year Emissions Inventory for the 2015 Ozone Standard
air-emissions · Rule · Published 2023-08-15 · Effective 2023-10-16 · IL · 88 FR 55383
Document
Document number
2023-17343
Federal Register citation
88 FR 55383
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
2023-08-15
Effective date
2023-10-16
State
IL
EPA docket
EPA-R05-OAR-2020-0555
Abstract
The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), revisions to the State Implementation Plan (SIP) submitted by the Illinois Environmental Protection Agency (Illinois EPA) on October 22, 2020, and February 14, 2023. The revisions address the emissions inventory requirements for the Chicago and Metro-East nonattainment areas under the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard). The Chicago nonattainment area includes Cook, DuPage, Grundy (Aux Sable and Goose Lake Townships), Kane, Kendall (Oswego Township), Lake, McHenry, and Will counties. The Metro-East nonattainment area includes Madison, Monroe, and St. Clair counties. The CAA requires emissions inventories for all ozone nonattainment areas.