---
kind: "section"
citation: "40 C.F.R. § 63.11178"
title: "40"
number: "63.11178"
heading: "In what form and for how long must I keep my records?"
url: "https://uscodex.org/cfr/40/63.11178"
---

# §63.11178. In what form and for how long must I keep my records?

- (a) If you are the owner or operator of an affected source, you must maintain copies of the records specified in [§ 63.11177](/cfr/40/63.11177.md) for a period of at least five years after the date of each record. Copies of records must be kept on site and in a printed or electronic form that is readily accessible for inspection for at least the first two years after their date, and may be kept off-site after that two year period.

## Notes

### Source

Source: 73 FR 1759, Jan. 9, 2008, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.