# Test Methods and Performance Specifications for Air Emission Sources
> **Rule** · — · Published 2021-02-16 · 86 FR 9470
## Document
- **Document number:** C1-2020-18824
- **Category:** other
- **Federal Register citation:** 86 FR 9470
- **CFR reference:** 40 CFR 51
- **Publication date:** 2021-02-16
- **EPA docket:** EPA-HQ-OAR-2018-0815
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/02/16/C1-2020-18824/test-methods-and-performance-specifications-for-air-emission-sources)
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*MORVS · CC0 1.0*