---
kind: "section"
citation: "40 C.F.R. § 63.7111"
title: "40"
number: "63.7111"
heading: "When must I conduct subsequent performance tests?"
url: "https://uscodex.org/cfr/40/63.7111"
---

# §63.7111. When must I conduct subsequent performance tests?


You must conduct a performance test within 5 years following the initial performance test and within 5 years following each subsequent performance test thereafter.


## Notes

### Source

Source: 69 FR 416, Jan. 5, 2004, unless otherwise noted.

### Authority

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

### Source

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