# Classification of the San Francisco Bay Area Ozone Nonattainment Area for Congestion Mitigation and Air Quality (CMAQ) Improvement Program Purposes
> **Rule** · Final rule. · Published 1999-07-22 · Effective 1999-08-23 · 64 FR 39416
## Document
- **Document number:** 99-18721
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 39416
- **CFR reference:** 40 CFR 81
- **Publication date:** 1999-07-22
- **Effective date:** 1999-08-23
- **EPA docket:** CA-010-0002, FRL-6401-6
## Abstract

On July 10, 1998 (63 FR 37258), EPA redesignated the San Francisco Bay Area from maintenance to nonattainment, without a classification, for the federal one-hour ozone standard. By not assigning a classification, EPA inadvertently affected the Bay Area's funding appropriation under the Transportation Equity Act for the 21st Century (TEA 21), Congestion Mitigation and Air Quality Improvement Program (CMAQ). On March 18, 1999, EPA proposed to assign the Bay Area a nonattainment classification for the federal one-hour ozone standard for CMAQ purposes only so that the Bay Area would be able to receive CMAQ funding commensurate with the severity of its air pollution problem (65 FR 13383). After providing a 30-day extension to the public comment period (64 FR 24123, May 5, 1999), EPA is today finalizing the classification.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/07/22/99-18721/classification-of-the-san-francisco-bay-area-ozone-nonattainment-area-for-congestion-mitigation-and)
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