# Test Methods and Performance Specifications for Air Emission Sources; Correction
> **Rule** · Final rule; correction. · Published 2020-12-02 · Effective 2020-12-07 · 85 FR 77384
## Document
- **Document number:** 2020-23690
- **Category:** other
- **Federal Register citation:** 85 FR 77384
- **CFR reference:** 40 CFR 63
- **Publication date:** 2020-12-02
- **Effective date:** 2020-12-07
- **EPA docket:** EPA-HQ-OAR-2018-0815
## Abstract

The Environmental Protection Agency (EPA) is correcting a final rule that was published in the Federal Register on October 7, 2020, and will be effective on December 7, 2020. The final rule corrected and updated regulations for source testing of emissions. This correction does not change any final action taken by the EPA on October 7, 2020; this action merely provides further clarification on the amendatory instructions for Method 311.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/12/02/2020-23690/test-methods-and-performance-specifications-for-air-emission-sources-correction)
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