40 CFR § 60.1450 - How must I monitor opacity for air curtain incinerators that burn 100 percent yard waste?

---
identifier: "/us/cfr/t40/s60.1450"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 60.1450 - How must I monitor opacity for air curtain incinerators that burn 100 percent yard waste?"
title_number: 40
title_name: "Protection of Environment"
section_number: "60.1450"
section_name: "How must I monitor opacity for air curtain incinerators that burn 100 percent yard waste?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "60"
part_name: "STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
regulatory_source: "36 FR 24877, Dec. 23, 1971, unless otherwise noted."
cfr_part: "60"
---


# 60.1450 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.

(c) After the initial test for opacity, conduct annual tests no more than 13 calendar months following the date of your previous test.