# National Ambient Air Quality Standards for Particulate Matter and Revised Requirements for Designation of Reference and Equivalent Methods for PMINF2.5/INF and Ambient Air Quality Surveillance for Particulate Matter; Correction
> **Rule** · Final rule; correction. · Published 1998-02-17 · Effective 1998-02-17 · 63 FR 7710
## Document
- **Document number:** 98-3178
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 7710
- **CFR reference:** 40 CFR 50
- **Publication date:** 1998-02-17
- **Effective date:** 1998-02-17
- **EPA docket:** AD-FRL-5963-3
## Abstract

The EPA is making minor clarification and/or corrections to the final rules revising 40 CFR parts 50, 53, and 58 published on July 18, 1997.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/02/17/98-3178/national-ambient-air-quality-standards-for-particulate-matter-and-revised-requirements-for)
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