# 40 C.F.R. § 61.224 (2026): Recordkeeping requirements

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_224

## Section

- **Citation:** 40 C.F.R. § 61.224 (2026)
- **Heading:** Recordkeeping requirements
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 61 / Subpart T / § 61.224: § 61.224   Recordkeeping requirements.

## Text

The owner or operator must maintain records documenting the source of input parameters including the results of all measurements upon which they are based, the calculations and/or analytical methods used to derive values for input parameters, and the procedure used to determine compliance. This documentation should be sufficient to allow an independent auditor to verify the accuracy of the determination made concerning the facility's compliance with the standard. The Administrator shall be kept apprised of the location of these records and the records must be kept for at least five years and upon request be made available for inspection by the Administrator, or his authorized representative.

## Nearby sections

- [40 C.F.R. § 61.220 (2026) § 61.220   Designation of facilities.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_220.md)
- [40 C.F.R. § 61.221 (2026) § 61.221   Definitions.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_221.md)
- [40 C.F.R. § 61.222 (2026) § 61.222   Standard.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_222.md)
- [40 C.F.R. § 61.223 (2026) § 61.223   Compliance procedures.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_223.md)
- [40 C.F.R. § 61.224 (2026) § 61.224   Recordkeeping requirements.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_224.md)
- [40 C.F.R. § 61.225 (2026) § 61.225   Exemption from the reporting and testing requirements of 40 CFR 61.10.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_225.md)
- [40 C.F.R. § 61.226 (2026) § 61.226   Reconsideration of rescission and reinstatement of this subpart.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_226.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P61_S61_224. Check the current official text before relying on it. Not legal advice.