Question

(1 pt) A stack has an effective stack height of 150 m and is emitting PM10 at a rate of 175 g/son a cloudy night with Class D conditions. The wind speed at stack height is 7.6 m/s. Using Figure 20.9, estimate the maximum downwind ground-level concentration (µg/m³) and the distance at which it occurs (m).

Fig: 1