Air Quality Specialist (AQS) Certification

In air dispersion modeling, 'effective stack height' is defined as the sum of the physical stack height plus:

The ambient mixing height at the time of release Plume rise due to momentum and buoyancy of exhaust gases The height of nearby buildings causing downwash The height at which plume centerline reaches ambient temperature

Correct Answer:

Plume rise due to momentum and buoyancy of exhaust gases

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