e) (5 marks) Using the dispersion equation, calculate the likely concentrations of the particulates (PM10) at 800m and 1km downwind of the factory? e C(x,y)= -H -exp(z)exp(- 20 Information you will need -Emission of PM10 (from part e) Q converted to g/s - Slightly unstable (stability class D) - Effective stack height (H): 60m -Wind speed at effective stack height (UB): 8m/s - receptor is directly downwind from the stack so y = 0 o,, Lateral dispersion coefficient (m) 104 5 2 103 5 2 10 5 2 10 4 103 2 5 104 2 Distance from source (m) 102 2 5 Figure 1: ay dispersion coefficients 5 105 3 x 10 2 103 5 2 10 5 2 101 5 6., Vertical dispersion coefficient (m) 2 1 102 2 5 Figure 2: 0; dispersion coefficients 10 2 5 104 2 Distance from source (m) 5 105