---
kind: "section"
citation: "40 C.F.R. § 60.1925"
title: "40"
number: "60.1925"
heading: "How must I monitor opacity for air curtain incinerators that burn 100 percent yard waste?"
url: "https://uscodex.org/cfr/40/60.1925"
---

# §60.1925. How must I monitor opacity for air curtain incinerators that burn 100 percent yard waste?

- (a) **Use EPA Reference Method 9 in appendix A of this part to determine compliance with the opacity limit.**
- (b) Conduct an initial test for opacity as specified in [§ 60.8](/cfr/40/60.8.md).
- (c) After the initial test for opacity, conduct annual tests no more than 13 calendar months following the date of your previous 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.