(16)] [147)) ] B. Dispersion of plume with a continuous steady-state source at height Hrabove ground level and wind moving in x-direction at constant velocity u is given by Eqn. (5-49), Case 13 (Textbook, 3rd ed.) 2 (c)(x,y,z) z-H +H, exp 210,0_u (5-49) where, (C) is average concentration at point (x,y,z) Q. is mass release rate of gas (mass/time) ,,, are the y and z dispersion coefficient u is the wind speed (length/time) x is the downwind direction y is the crosswind direction z is the height above the ground H, is the release height (length) Now consider an incinerator located in rural area has a stack height of 45 m. On a bright sunny day with a 4.5 m/s wind speed, the concentration of sulfur dioxide (S02) 2 km directly downwind on the ground is measured at 5.5x10gm/m. a. Show how Equation (5-49) is simplified for the downwind centerline concentration, (c)(x,0,0). b. Estimate the total release rate of sulfur dioxide (in gm/s) from this stack. Assume rural conditions. Data for sulfur dioxide (SO): Molecular weight: 64