VirtualOpacity® State Acceptance Map
State-by-state acceptance of ALT-152A
Hover over a state — click to view VR smoke school details
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VirtualOpacity VR smoke school recognition
The use of CAA’s VirtualOpacity® platform has federal EPA approval. The states shown above have formally or informally indicated their acceptance of alternative opacity testing methods, including certifications conducted using the ALT-152A protocol. Note that state agencies cannot explicitly endorse specific vendors or methodologies.
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