---
kind: "section"
citation: "40 C.F.R. § 60.3067"
title: "40"
number: "60.3067"
heading: "How must I monitor opacity for air curtain incinerators that burn only wood waste, clean lumber, and yard waste?"
url: "https://uscodex.org/cfr/40/60.3067"
---

# §60.3067. How must I monitor opacity for air curtain incinerators that burn only wood waste, clean lumber, and yard waste?

- (a) Use EPA Method 9 of Appendix A to this part or ASTM D7520-16 (incorporated by reference, see [§ 60.17](/cfr/40/60.17.md)), to determine compliance with the opacity limitation.
- (b) Conduct an initial test for opacity as specified in [§ 60.8](/cfr/40/60.8.md) within 180 days after the final compliance date in table 1 of this subpart.
- (c) After the initial test for opacity, conduct annual tests no more than 12 months following the date of your previous test.
- (d) If the air curtain incinerator has been out of operation for more than 12 months following the date of your previous test, then you must conduct a test for opacity upon startup of the unit.

## Notes

### Amendments

[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]

### Source

Source: 70 FR 74907, Dec. 16, 2005, unless otherwise noted.

### Authority

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

### Source

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

### Amendments

[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]