# Approval and Promulgation of Implementation Plan; Indiana
> **Rule** · Direct final rule. · Published 2000-07-05 · Effective 2000-09-05 · 65 FR 41352
## Document
- **Document number:** 00-16361
- **Category:** other
- **Federal Register citation:** 65 FR 41352
- **CFR reference:** 40 CFR 52
- **Publication date:** 2000-07-05
- **Effective date:** 2000-09-05
- **State:** IN
- **EPA docket:** IN128-1a
## Abstract

EPA is approving revised opacity limits for three casting complexes at ALCOA Warrick Operations, which were submitted by the Indiana Department of Environmental Management (IDEM) on January 13, 2000 as amendments to its State Implementation Plan (SIP). ALCOA Warrick Operations is a primary aluminum smelter located in Newburgh, Indiana. The revised limits allow higher opacity emissions during fluxing operations at three casting complexes. This action does not reverse applicable mass emissions limits.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/07/05/00-16361/approval-and-promulgation-of-implementation-plan-indiana)
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