The physical movement of a pesticide through air at the time of application, or soon thereafter, to any site other than that intended for application.

The physical movement of spray particles off the target area at the time of application.

Movement beyond the target area of airborne droplets or vapour of pesticide formulation originating from aerial or ground-based spraying operations.

Aerosol emissions from cooling towers due to the fan forced or extracted air exiting the cooling tower.