---
kind: "section"
citation: "40 C.F.R. § 63.9912"
title: "40"
number: "63.9912"
heading: "When must I conduct subsequent performance tests?"
url: "https://uscodex.org/cfr/40/63.9912"
---

# §63.9912. When must I conduct subsequent performance tests?


You must conduct subsequent performance tests to demonstrate continuous compliance with all applicable emission limits in Table 1 to this subpart no less frequently than twice (at mid-term and renewal) during each term of your title V operating permit.


## Notes

### Source

Source: 68 FR 58620, Oct. 10, 2003, unless otherwise noted.

### Authority

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

### Source

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