# Implementation Plan and Redesignation Request for the Williamson County, Tennessee Lead Nonattainment Area
> **Rule** · Direct final rule. · Published 1999-07-12 · Effective 1999-09-10 · 64 FR 37406
## Document
- **Document number:** 99-17338
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 37406
- **CFR reference:** 40 CFR 52
- **Publication date:** 1999-07-12
- **Effective date:** 1999-09-10
- **State:** TN
- **EPA docket:** TN-217-1-9920a
## Abstract

EPA is simultaneously approving the lead state implementation plan (SIP) and redesignation request for the Williamson County, Tennessee, lead nonattainment area. Both plans, dated May 12, 1999, were submitted by the State of Tennessee for the purpose of demonstrating that the Williamson County area has attained the lead national ambient air quality standard (NAAQS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/07/12/99-17338/implementation-plan-and-redesignation-request-for-the-williamson-county-tennessee-lead-nonattainment)
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