---
kind: "section"
citation: "40 C.F.R. § 60.1785"
title: "40"
number: "60.1785"
heading: "What schedule must I follow for the stack testing?"
url: "https://uscodex.org/cfr/40/60.1785"
---

# §60.1785. What schedule must I follow for the stack testing?

- (a) Conduct initial stack tests for the pollutants listed in [§ 60.1775](/cfr/40/60.1775.md) by 180 days after your final compliance date.
- (b) **Conduct annual stack tests for the same pollutants after the initial stack test.** Conduct each annual stack test no later than 13 months after the previous stack test.

## Notes

### Source

Source: 65 FR 76384, Dec. 6, 2000, unless otherwise noted.

### Authority

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

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.