---
kind: "section"
citation: "40 C.F.R. § 63.884"
title: "40"
number: "63.884"
heading: "Performance test requirements."
url: "https://uscodex.org/cfr/40/63.884"
---

# §63.884. Performance test requirements.

- (a) If you are subject to the provisions of this subpart you must conduct a performance test to demonstrate compliance with the applicable emission limits in [§ 63.882](/cfr/40/63.882.md). For existing sources, compliance is demonstrated when the emission rate of the pollutant is equal to or less than each of the applicable emission limits in [§ 63.882](/cfr/40/63.882.md) by July 31, 2017. For new sources compliance is demonstrated when the emission rate of the pollutant is equal to or less than each of the applicable emission limits in [§ 63.882](/cfr/40/63.882.md) by January 25, 2016 or 180 days after initial startup, whichever is later. You must conduct the performance test according to the procedures in [subpart A](/cfr/40/subpartA.md) of this part and in this section.
- (b) You must meet all applicable performance test requirements contained in subpart NNN of this part.

## Notes

### Source

Source: 80 FR 45325, July 29, 2015, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.