# Approval and Promulgation of State Implementation Plan, South Carolina: Addition of Supplement C to the Air Quality Modeling Guidelines
> **Rule** · Direct final rule. · Published 1997-08-20 · Effective 1997-10-20 · 62 FR 44218
## Document
- **Document number:** 97-21919
- **Category:** air-emissions
- **Federal Register citation:** 62 FR 44218
- **CFR reference:** 40 CFR 52
- **Publication date:** 1997-08-20
- **Effective date:** 1997-10-20
- **State:** SC
- **EPA docket:** SC 30-1-9645a: FRL-5877-1
## Abstract

On May 6, 1996, the South Carolina Department of Health and Environmental Control submitted revisions to the South Carolina State Implementation Plan (SIP) involving revisions to 61-62.5 Standard 7, Prevention of Significant Deterioration to add Supplement C to air quality modeling guidelines. This revision updates the South Carolina SIP to meet the latest EPA modeling requirements. Therefore, these revisions are being approved into the SIP.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/08/20/97-21919/approval-and-promulgation-of-state-implementation-plan-south-carolina-addition-of-supplement-c-to)
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