# Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Indiana
> **Rule** · Direct final rule. · Published 2000-05-10 · Effective 2000-07-10 · 65 FR 29959
## Document
- **Document number:** 00-11423
- **Category:** air-emissions
- **Federal Register citation:** 65 FR 29959
- **CFR reference:** 40 CFR 52
- **Publication date:** 2000-05-10
- **Effective date:** 2000-07-10
- **State:** IN
- **EPA docket:** IN 119-1a
## Abstract

EPA is approving a redesignation request submitted by the State of Indiana. This action, which Indiana requested on March 2, 2000, redesignates Marion County (Indianapolis) to attainment of the National Ambient Air Quality Standards (NAAQS) for lead. In addition, EPA is also approving a maintenance plan for Marion County. The plan is designed to ensure maintenance of the lead NAAQS for at least 10 years. Indiana submitted the maintenance plan with the redesignation request.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/05/10/00-11423/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-for-air-quality-planning)
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