# Approval and Promulgation of Implementation Plans; Tennessee: Approval of Revisions to the Memphis Ozone Maintenance Plan
> **Rule** · Direct final rule. · Published 1999-04-20 · Effective 1999-06-21 · 64 FR 19281
## Document
- **Document number:** 99-9714
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 19281
- **CFR reference:** 40 CFR 52
- **Publication date:** 1999-04-20
- **Effective date:** 1999-06-21
- **State:** TN
- **EPA docket:** TN-204-1-9913a
## Abstract

EPA is approving revisions to the Memphis and Shelby County Health Department (MSCHD) ozone (O<INF>3</INF>) maintenance plan. The revisions were submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on September 18, 1997, with supplemental information submitted on June 30, 1998. The MSCHD revised their O<INF>3</INF> maintenance plan by adding new tables which correct errors made in the original base year inventory and maintenance plan. These corrections impact the transportation conformity budget for the greater Memphis Metropolitan Statistical Area.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/04/20/99-9714/approval-and-promulgation-of-implementation-plans-tennessee-approval-of-revisions-to-the-memphis)
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