# Approval and Promulgation of Implementation Plans; Louisiana; Rescission of the Section 182(f) and 182(b)(1) Exemptions to the Nitrogen Oxides Control Requirements for the Baton Rouge Ozone Nonattainment Area
> **Rule** · Final rule. · Published 2003-05-05 · Effective 2003-06-04 · 68 FR 23597
## Document
- **Document number:** 03-10888
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 23597
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-05-05
- **Effective date:** 2003-06-04
- **State:** LA
- **EPA docket:** LA-60-1-7562
## Abstract

We are approving revisions to the Louisiana State Implementation Plan (SIP). In particular, we are finalizing our proposal to rescind the section 182(f) and 182(b)(1) nitrogen oxides (NO<INF>X</INF>) exemptions for the Baton Rouge (BR) ozone nonattainment area, which proposal was published on May 7, 2002 (67 FR 30638). We are rescinding the NO<INF>X</INF> exemptions based on revised photochemical grid modeling recently conducted for the BR area SIP which indicates that control of NO<INF>X</INF> emissions will help the area attain the National Ambient Air Quality Standard (NAAQS) for ozone. The State of Louisiana requested that EPA rescind the NO<INF>X</INF> exemption based on this new modeling. Upon rescission of the NO<INF>X</INF> exemptions, the State will need to implement NO<INF>X</INF> controls to meet the Clean Air Act's (the Act) requirements for Reasonably Available Control Technology (RACT), Nonattainment New Source Review (NNSR), vehicle Inspection/Maintenance (I/M), and general and transportation conformity. The EPA is finalizing the proposal to rescind the NO<INF>X</INF> exemptions for the BR ozone nonattainment area as meeting the requirements of the Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/05/05/03-10888/approval-and-promulgation-of-implementation-plans-louisiana-rescission-of-the-section-182f-and-182b1)
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