# Clean Air Act Promulgation of Extension of Attainment Date for PM-10 Nonattainment Area in Denver, CO
> **Rule** · Direct final rule. · Published 1995-10-06 · Effective 1995-12-05 · 60 FR 52312
## Document
- **Document number:** 95-24508
- **Category:** air-emissions
- **Federal Register citation:** 60 FR 52312
- **CFR reference:** 40 CFR 52
- **Publication date:** 1995-10-06
- **Effective date:** 1995-12-05
- **EPA docket:** FRL-5309-5
## Abstract

This action serves to grant a 1-year attainment date extension for the Denver, Colorado particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM-10) nonattainment area. This action is based on monitored air quality data for the national ambient air quality standard for PM-10 during the years 1992-94 and EPA's evaluation of the applicable state implementation plan (SIP).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1995/10/06/95-24508/clean-air-act-promulgation-of-extension-of-attainment-date-for-pm-10-nonattainment-area-in-denver-co)
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