SCE PE Water Resources & Environmental

Practice session

An industrial facility in Jubail emits sulfur dioxide (SO₂) from a stack with an effective height H = 100.0 m at a continuous mass emission rate Q = 100.0 g/s. At a receptor location 2.0 km directly downwind along the plume centerline (y = 0, z = 0), the wind speed at stack height is u = 5.0 m/s, and the atmospheric dispersion coefficients are σ_y = 150.0 m and σ_z = 80.0 m. Using the standard Gaussian plume dispersion equation, what is the ground-level centerline SO₂ concentration at this receptor?

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