# Approval and Promulgation of Implementation Plans, and Designation of Areas for Air Quality Planning Purposes; State of Illinois
> **Rule** · Final rule. · Published 2003-05-12 · Effective 2003-05-12 · 68 FR 25442
## Document
- **Document number:** 03-11524
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 25442
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-05-12
- **Effective date:** 2003-05-12
- **State:** IL
- **EPA docket:** IL 216-2
## Abstract

EPA has determined, in a separate rule published in today's Federal Register, that the St. Louis ozone nonattainment area (St. Louis area) has attained the one-hour ozone National Ambient Air Quality Standard (NAAQS). The St. Louis ozone nonattainment area includes the Counties of Madison, Monroe, and St. Clair in Illinois and the Counties of Franklin, Jefferson, St. Charles, and St. Louis and St. Louis City in Missouri. Based on the determination of attainment, EPA has also determined, in today's separate rule, that certain ozone attainment demonstration requirements along with certain other ozone planning requirements of part D of title I of the Clean Air Act (CAA or Act) are not applicable for the St. Louis ozone nonattainment area. The EPA is approving a request from the State of Illinois, submitted on December 26, 2002, to redesignate the Metro-East St. Louis area (Madison, Monroe, and St. Clair Counties, Illinois) (the Illinois portion of the St. Louis ozone nonattainment area) to attainment of the one-hour ozone NAAQS. In approving this request, the EPA is also approving the State's plan for maintaining the one-hour ozone NAAQS through 2014 as a revision to the Illinois State Implementation Plan (SIP); and finding as adequate and approving the State's 2014 Motor Vehicle Emission Budgets (MVEBs) for Volatile Organic Compounds (VOC) and Oxides of Nitrogen (NO<INF>X</INF>), as contained in the maintenance plan, for transportation conformity purposes. Refer also to a separate rule published today (the attainment determination rule) regarding similar approvals for the State of Missouri. The EPA is approving an exemption from certain NO<INF>X</INF> emission control requirements, as provided for in section 182(f) of the Clean Air Act, for the Metro-East St. Louis area. Because the St. Louis area is currently attaining the one-hour ozone NAAQS, the EPA is granting the Metro-East St. Louis area an exemption from NO<INF>X</INF> Reasonably Available Control Technology (

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/05/12/03-11524/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-for-air-quality-planning)
---
*AI Analytics · CC0 1.0*