# 40 CFR § 1066.25: Recordkeeping

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.25

## Section

- **Citation:** 40 CFR § 1066.25
- **Heading:** Recordkeeping
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER U—AIR POLLUTION CONTROLS > PART 1066—VEHICLE-TESTING PROCEDURES > Subpart A—Applicability and General Provisions

## Text

(a) The procedures in this part include various requirements to record data or other information. Refer to the standard-setting part and § 1066.695 regarding specific recordkeeping requirements.
(b) You must promptly send us organized, written records in English if we ask for them. We may review them at any time.
(c) We may waive specific reporting or recordkeeping requirements we determine to be unnecessary for the purposes of this part and the standard-setting part. Note that while we will generally keep the records required by this part, we are not obligated to keep records we determine to be unnecessary for us to keep. For example, while we require you to keep records for invalid tests so we may verify that your invalidation was appropriate, it is not necessary for us to keep records for our own invalid tests.

## Nearby sections

- [40 CFR § 1066.1 § 1066.1 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.1.md)
- [40 CFR § 1066.2 § 1066.2 Submitting information to EPA under this part.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.2.md)
- [40 CFR § 1066.5 § 1066.5 Overview of this part 1066 and its relationship to the standard-setting part.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.5.md)
- [40 CFR § 1066.10 § 1066.10 Other procedures.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.10.md)
- [40 CFR § 1066.15 § 1066.15 Overview of test procedures.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.15.md)
- [40 CFR § 1066.20 § 1066.20 Units of measure and overview of calculations.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.20.md)
- [40 CFR § 1066.25 § 1066.25 Recordkeeping.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.25.md)
- [40 CFR § 1066.101 § 1066.101 Overview.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.101.md)
- [40 CFR § 1066.105 § 1066.105 Ambient controls and vehicle cooling fans.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.105.md)
- [40 CFR § 1066.110 § 1066.110 Equipment specifications for emission sampling systems.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.110.md)
- [40 CFR § 1066.120 § 1066.120 Measurement instruments.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.120.md)
- [40 CFR § 1066.125 § 1066.125 Data updating, recording, and control.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.125.md)
- [40 CFR § 1066.130 § 1066.130 Measurement instrument calibrations and verifications.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.130.md)
- [40 CFR § 1066.135 § 1066.135 Linearity verification.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.135.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-1066.25. Check the current official text before relying on it. Not legal advice.