---
kind: "section"
citation: "40 C.F.R. § 1045.420"
title: "40"
number: "1045.420"
heading: "What in-use testing information must I report to EPA?"
url: "https://uscodex.org/cfr/40/1045.420"
---

# §1045.420. What in-use testing information must I report to EPA?

- (a) **In a report to us within three months after you finish testing an engine family, do all the following—**
  - (1) **Identify the engine family, model, serial number, and date of manufacture.**
  - (2) [Reserved]
  - (3) **Describe the specific reasons for disqualifying any engines for not being properly maintained or used.**
  - (4) **For each engine selected for testing, include the following information—**
    - (i) **Estimate the hours each engine was used before testing.**
    - (ii) **Describe all maintenance, adjustments, modifications, and repairs to each test engine.**
  - (5) **State the date and time of each test attempt.**
  - (6) **Include the results of all emission testing, including incomplete or invalidated tests, if any.**
- (b) Send electronic reports of in-use testing to the Designated Compliance Officer using an approved information format. If you want to use a different format, send us a written request with justification for a waiver.
- (c) We will send copies of your reports to anyone from the public who asks for them. See [§ 1045.815](/cfr/40/1045.815.md) for information on how we treat information you consider confidential.
- (d) We may ask for more information.

## Notes

### Authority

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

### Source

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