Virtual Smoke School Status and Opacity Training in New York

New York Acceptance Status for VirtualOpacity^® — EPA ALT-152A

Accepted.

New York Acceptance Letter »

New York Visible Emissions / Opacity Standard

The opacity limit for New York is 20% opacity (6-min avg) general, except one continuous 6-min period per hour of not more than 57%; process sources 20%/6-min (uncombined water exempt); stationary combustion 20% with one 6-min period per hour <=27%, as established under 6 NYCRR 211.2 (general); 212-1.6(a) (process sources); 227-1.4(a) (stationary combustion).

Compliance is demonstrated via EPA Method 9 (40 CFR Part 60, Appendix A); NYSDEC observer certification required.

Averaging period: 6-minute average

New York's 57% opacity exception period is among the highest nationally — most states cap exceptions at 40–60%. NYSDEC Chapter 40 visible emissions requirements are applied statewide. New York City has its own local air pollution control provisions under the NYC Administrative Code.

Last verified July 8, 2026

Note: Regulations change — always verify current requirements with your state's air quality agency before making compliance decisions. This page is for informational purposes and is not legal advice; consult a qualified attorney or environmental compliance professional for guidance specific to your facility.