---
kind: "section"
citation: "40 C.F.R. § 1045.425"
title: "40"
number: "1045.425"
heading: "What records must I keep?"
url: "https://uscodex.org/cfr/40/1045.425"
---

# §1045.425. What records must I keep?

- (a) **Organize and maintain your records as described in this section.** We may review your records at any time, so it is important to keep required information readily available.
- (b) Keep paper records of your in-use testing for one full year after you complete all the testing required for an engine family in a model year. You may use any additional storage formats or media if you like.
- (c) Keep a copy of the written reports described in [§ 1045.420](/cfr/40/1045.420.md).
- (d) **Keep any additional records related to the procurement process.**

## Notes

### Authority

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

### Source

Source: 73 FR 59194, Oct. 8, 2008, unless otherwise noted.