---
kind: "section"
citation: "40 C.F.R. § 1054.520"
title: "40"
number: "1054.520"
heading: "What testing must I perform to establish deterioration factors?"
url: "https://uscodex.org/cfr/40/1054.520"
---

# §1054.520. What testing must I perform to establish deterioration factors?


Sections [1054.240](/cfr/40/1054.240.md) and [1054.245](/cfr/40/1054.245.md) describe the required methods for testing to establish deterioration factors for an emission family.


## Notes

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 73 FR 59259, Oct. 8, 2008, unless otherwise noted.