---
kind: "section"
citation: "40 C.F.R. § 63.10402"
title: "40"
number: "63.10402"
heading: "By what date must I demonstrate initial compliance?"
url: "https://uscodex.org/cfr/40/63.10402"
---

# §63.10402. By what date must I demonstrate initial compliance?


You must demonstrate initial compliance with [§ 63.10390](/cfr/40/63.10390.md) upon startup or no later than 180 calendar days after your compliance date, whichever is later.


## Notes

### Source

Source: 72 FR 73623, Dec. 28, 2007, unless otherwise noted.

### Authority

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

### Source

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