# Revisions to Standards of Performance for New Stationary Sources, National Emission Standards for Hazardous Air Pollutants, and National Emission Standards for Hazardous Air Pollutants for Source Categories
> **Rule** · Final rule. · Published 2007-05-16 · Effective 2007-05-16 · 72 FR 27437
## Document
- **Document number:** E7-9407
- **Category:** air-emissions
- **Federal Register citation:** 72 FR 27437
- **CFR reference:** 40 CFR 60
- **Publication date:** 2007-05-16
- **Effective date:** 2007-05-16
- **EPA docket:** EPA-HQ-OAR-2006-0085
## Abstract

This action promulgates revisions to the General Provisions for Standards of Performance for New Stationary Sources, for National Emission Standards for Hazardous Air Pollutants, and for National Emission Standards for Hazardous Air Pollutants for Source Categories to allow for extensions to the deadline imposed for source owners and operators to conduct an initial or subsequent performance test required by applicable regulations. The General Provisions do not currently provide for extensions of the deadlines for conducting performance tests.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/05/16/E7-9407/revisions-to-standards-of-performance-for-new-stationary-sources-national-emission-standards-for)
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