# Clean Air Act Promulgation of Extension of Attainment Date for the Portland, Maine, Moderate Ozone Nonattainment Area
> **Rule** · — · Published 1997-11-20 · 62 FR 61916
## Document
- **Document number:** X97-11120
- **Category:** air-emissions
- **Federal Register citation:** 62 FR 61916
- **CFR reference:** 40 CFR 81
- **Publication date:** 1997-11-20
- **State:** ME
## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/11/20/X97-11120/clean-air-act-promulgation-of-extension-of-attainment-date-for-the-portland-maine-moderate-ozone)
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